How do you solve 2nd degree equations with 2 variables?.

Answer: a) 190cm³

              b) 76cm³

(refer to the image to see all the steps and workings I did related to these diagrams)

We have exponential decay of roughly 40% per time unit.

We have to  y=(0.88)^4t in the form y=a(1+r)^t or y=a(1−r)^t to determine whether it represents exponential growth or exponential decay. Round a and r to the nearest hundredth if necessary.

y=(0.88)^4t

y=1( (0.88)^4 )^t

y=1( 0.59969536 )^t

Set 0.59969536 equal to 1-r and solve for r

1-r = 0.59969536

-r = 0.59969536-1

-r = -0.40030464

r = 0.40030464

r = 0.40

This means we have,

y=a( 1 - r )^t

y=1( 1 - 0.40 )^t

which means a = 1 and r = 0.40 approximately

We have exponential decay of roughly 40% per time unit.

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The statement B. "The diagonals are perpendicular and one pair of adjacent sides are congruent." is not sufficient to prove that a parallelogram is a square.

A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length. It has opposite angles equal in measure. The diagonals of a parallelogram bisect each other.

A square is a type of rectangle and a type of parallelogram. It is a four-sided polygon with all sides of equal length and all angles right angles. The opposite sides of a square are parallel and congruent, and opposite angles are congruent as well. The diagonals of a square are congruent and bisect each other. Additionally, the diagonals of a square are also perpendicular to each other.

Note that a rhombus also has congruent adjacent sides and perpendicular diagonals, but it's not a square.

Therefore, if the diagonals are perpendicular and one pair of adjacent sides are congruent, the parallelogram is not necessarily a square.

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Step-by-step explanation:

laisha bike farthest in 1 hour

Answer:

4 and 2?

Step-by-step explanation:

4+2=6 im pretty sure thats what you mean

The base of 2 is a binary number. This means it is comprised of only 0's and 1's.

A binary number is a number represented in the base-2 numeral system or binary numeral system, a method of a mathematical term which uses only two symbols: typically "0" (zero) and "1" (one).

A binary number system is one of the types of the number system. In computer applications, where only two symbols or digits represent binary numbers, i.e. 0 (zero) and 1(one). The binary numbers here are represented in the base-2 numeral system. For example, (101)₂ is a binary number. Each digit in this system is stated to be a bit.

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Explanation:

The given equation y = 3x-5 is of the form y = mx+b

Parallel lines have the same slope, which means the answer also has a slope of 3.

Plug in the given point (x,y) = (-4,5) along with the slope m = 3 so we can determine the y intercept.

y = mx+b

5 = 3*(-4)+b

5 = -12+b

5+12 = b

17 = b

b = 17

We go from y = mx+b to y = 3x+17 as the final answer.

The process of multiplying a number or expression by itself a certain number of times, known as its exponent.

1) 3a + 6 = 5a

3a + 6 - 5a = 0

-2a = 0

a = 0

2) 5c - 4c = c

5c - 4c - c = 0

c = 0

3) 8x8 - 4x - 3 = 16% - 7

8x8 - 4x - 3 - 16% + 7 = 0

64x - 3 - 16% = 0

64x - 3 - 16/100 = 0

64x - 0.16 = 0

64x = 0.16

x = 0.0025

Exponents are a way to represent repeated multiplication of a number by itself. To solve an equation with an exponent, we must simplify the expression by breaking down the exponent into its component parts, and then simplify the equation by solving for the variable. We can then solve for the exponent by substituting the value of the variable into the equation. For example, if we had an equation of 3a + 6 = 5a, we would first subtract 5a from both sides to get -2a = 0. We can then substitute that value into the equation to get a = 0. Exponents can be a useful tool to quickly solve equations, but can also be tricky to solve if you don't know the basics of algebra.

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Answer:

Step-by-step explanation:

2^-4=0.0625

we can divide by any number to to make an equivalent expression. (Note it is more easier when it is not a repeating decimal.)

we can do 0.0625/2= 0.03125 with this answer we can make an equivalent expression

1(0.03125+0.03125)=0.0625

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{2^{-4}}[/tex]

[tex]\mathsf{= \dfrac{1}{4 \times 4 \times 4 \times 4}}[/tex]

[tex]\mathsf{= \dfrac{1}{2^4}}[/tex]

[tex]\mathsf{= \dfrac{1}{2 \times 2 \times 2 \times 2}}[/tex]

[tex]\mathsf{= \dfrac{1}{4 \times 4}}[/tex]

[tex]\mathsf{= \dfrac{1}{16}}[/tex]

[tex]\huge\text{Therefore, your answer could possibly be: }[/tex]

[tex]\huge\boxed{\mathsf{\dfrac{1}{16}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

The Greek letter Sigma (Σ) is a mathematical symbol used to represent the sum of a series. It is also used to denote standard deviation and other statistical terms, and is the eighteenth letter of the Greek alphabet.

The symbol is written as a capital letter Σ, and is used to indicate the summation of a set of numbers, with a subscript indicating the range. For example, Σ1-10 would indicate the sum of numbers from one to ten.

Sigma can also be used to represent a group of numbers' standard deviation. To do this, the sigma symbol is written with a subscript indicating the range, and the square root of the variance of the set is calculated.

In summary, the sigma symbol is used to represent the sum of a series, as well as to denote standard deviation and other statistical terms. It is written as the capital letter Σ, and is usually followed by a subscript to indicate the range of the summation or standard deviation.

Complete answer:

What is the name of Σ?

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To find the area of an equilateral triangle with side 12 cm, we can use the formula:

Area = (√3/4) * (side length)^2

Substituting the value of the side length, we get:

Area = (√3/4) * 12^2

Area = (√3/4) * 144

Area = (√3/4) * 1212

Area = (√3/4) * 1212 = (√3/4)144 = (√3)12(12/4) = (√3)123 = 1212*√3 cm^2

So, the area of the equilateral triangle is 1212√3 cm^2.

The number of solutions to an equation x₁ + x₂ + x₃ = 11 are 55

Consider given equation x₁ + x₂ + x₃ = 11,

wherex₁, x₂, and x₃ are non-negative integers.

We can oberve that x₁ is the number of ones before the first zero, x₂ the number of ones between the first and the second zero, x₃ is the number of ones after the second zero.

So, we can say that there is a one to one correspondence between the solutions and reorderings of 11 ones and 2 zeros.

So, the number of solutions to given equation would be,

n = ¹¹C₂

Using combination formula [tex]^nC_r=\frac{n!}{r!\times(n-r)!}[/tex],

¹¹C₂ = 11! / (2! × (11 - 2)!)                  

¹¹C₂ = 55

So, n = 55

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The complete question is:

How many solutions does equation x₁ + x₂ + x₃ = 11 have where x₁, x₂, and x₃  are non negative integers?.

H₂ is two moles.

The molecular mass of an element is described as the sum of the masses of all the atoms present in the molecule.

Molecular mass is acquired by adding the atomic masses of all atoms with the number of atoms in the molecule.

H₂ has two atoms, so a mole of H₂ would have 1 mole of H₂ molecules, and when broken down into atoms, 2 moles of atoms.

Think about it like pairs of shoes. If you have 6 pairs of shoes, you have 12 pairs of shoes.

CO₂ has 3 atoms, 2N₂0 has 3 atoms, and there are already 2 moles, so that would be 6 moles of atoms; 2NaCl has 2 atoms but again, that 2 indicates that you'd have 4 moles of atoms, and H₂SO₄ has 7 atoms.

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The person who drink more water is Troy and he drinks 0.3 L more than Whitney

It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.

To solve this problem, we have to do the conversion of units with the given information:

Information about the problem:

By converting the unit from mL to L, we have:

1500 mL * (1 L / 1000 mL ) = 1.5 L

Comparing the volume of water that Whitney and Troy drink we have:

1.8 L > 1.5 L

Troy > Whitney

Troy drinks more water than Whitney

Calculating how much water Troy drinks more, we get:

Volume difference = Troy - Whitney

Volume difference = 1.8 L - 1.5 L

Volume difference = 0.3 L

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Therefore, the price of the complete meal is $9.00 before tax.

Percentage:

A figure or ratio stated as a fraction of 100 is called a percentage. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a standard measurement.

As per the data given in the above question are as bellow,

The details provided are as follow,

Provided that 20% of the expense of breakfast is $1.8.

To calculate the total cost of the breakfast before the tip, we may apply proportions.

Set x as the price of a full breakfast:

Therefore 0.2 = 1.8

So, 1.0 = x

0.2x = 1.8 x 1.0

x = 1.8/0.2

x = 9

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Note: The correct question is as bellow,

Mira has breakfast at a restaurant. She leaves a 20%, percent tip of $1.80. What is the price of Mira's breakfast, before tip?

Answer:

Step-by-step explanation: 122x2=144

Answer: x = 12, - 12

Step-by-step explanation:

Answer: 7/6 or 1 1/6

Step-by-step explanation:

1/2+2/3= 7/6 or 1 1/6

2x2 and 3x2 which is 4/6 (multiply with 2)

1x3 and 2x3 which is 3/6 (multiply with 3)

4/6+3/6= 7/6 or 1 1/6

Answer:

  x=0

Step-by-step explanation:

You want the value of x that cannot be in the domains of either f(x) = 2/x or g(x) = (x+1)/x.

The domain of a function is the set of input values for which the function is defined.

These functions f(x) and g(x) are "undefined" when x=0, because that would cause division by zero.

  x cannot be zero

The numbers of a, b and c that make the equation true are given as follows:

a = 6, b = 2, c = 8.

The equation for this problem is defined as follows:

a + b = c.

The value of a is given as follows:

a = 6.

Hence:

6 + b = c.

b and c are single-digit even numbers, hence they can be obtained by trial and error as follows:

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The probability that Mrs. Barnes checks homework if the students take a pop quiz is 0.77, the correct option is D.

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

P(E) = Number of favorable outcomes / total number of outcomes

Given;

Mrs. Barnes’s class determined the probability that she will check homework on a randomly chosen day is 0.42;

They also determined the probability that she will give a pop quiz when she checks homework is 0.6, and the probability that she will give a pop quiz when she does not check homework is 0.9;

Then the probability that Mrs. Barnes does not check homework if the students take a pop quiz;

P= 0.42*0.60 + 0.58*0.90

P = 0.252 + 0.522

P = 0.774

P ≈ 0.77

Therefore, the probability will be 0.77

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Multiplying both sides by 7 undoes the division of x by 7 in the original problem. Therefore, option A is the correct answer.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

The given equation is x/7 -4=-6

The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.

Multiplying both sides of equation by 7, we get

x-28=-42

Add both sides of equation by 28, we get

x=-42+28

x=-42

Therefore, option A is the correct answer.

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In mathematics, the system of equations is typically solved using the substitution method. In this approach.

The first step is to solve the equation for one variable and then insert the variable's value into the other equation.

x+y=20 ___ (1) and x=10 ___ (2) are given. x = 20-y is what we get from equation 1. To determine the value of y, substitute this value in equation 2. Now, substitute the value of y in equation 1, and we obtain x=15, which corresponds to x+5=20.

In algebraic expressions, substitution refers to the process of replacing the variables (letters) with their numerical values. The expression's total value can then be calculated.

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Answer:

  (c)  √65

Step-by-step explanation:

You want to know the magnitude of the vector (7, -4).

The magnitude of a vector is the root of the sum of the squares of its components.

  |(7, -4)| = √(7² +(-4)²) = √(49 +16) = √65

The magnitude of the vector is √65.

Answer:

√65

Step-by-step explanation:

Following are the different equations, for which the value of equals 13.

There are numerous mathematical formulae that could all equal 13. The following phrases all equal 13.

9+ 4 = 13

15-2 = 13

1 × 13 = 13

Let's think about some intriguing expressions right now.

x³ - x² + x + 7

The equation will equal 13 if the value of x is 2.

A word puzzle states that Shiya has 10 balls and Riya has 3 more than Tom. How many balls does Ria possess?

Let x represent the quantity of Balls Shiya owns.

Shiya has 10 Balls, thus x is equal to 10, and Ry has x+3 Balls.

As a result, Riya has = x + 3 = 10 + 3 = 13 Balls.

Therefore, Riya has 13 Balls total.

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For the scatter plots shown;

a) Non linear

b) Linear positive

c) Non linear

d) Linear negative

We know that the scatter plot is used to show the relationship between variables. The variable that is plotted on the vertical axis is the dependent variable while the variable that is plotted on the horizontal is the independent variable.

The points that we have on the scatter plot can help us to be able to know whether or not the relationship between the variables is linear.

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The value of the equation is A = 5.44

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

A = 49 ÷ 9   be equation (1)

On simplifying the equation , we get

A = 5.44

Therefore , the value of A is 5.44

Hence , the equation is A = 5.44

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Answer:

24 because every 1 cup of flour equals 24 number of cookies so it keeps on adding up eg. 6 cups of flour would equal 144 cookies.

Answer:

47.5

Step-by-step explanation:

95 divided by 2 is equal to 47 with a remainder of 1.

To divide 95 by 2, you need to perform long division.

Here's the step-by-step process:

Write the dividend (95) inside the division bracket, and the divisor (2) outside the bracket.

Place the quotient above the division bracket.

__

2 | 95

Start with the leftmost digit of the dividend (9) and divide it by the divisor (2). Since 9 is smaller than 2, we move to the next digit.

__

2 | 95

4

Bring down the next digit of the dividend (5) to the right of the remainder

(1) obtained from the previous step.

__

2 | 95

4 1

Divide 15 by 2. The quotient is 7, and the remainder is 1.

__

2 | 95

47 1

Since there are no more digits in the dividend, we have completed the division.

The quotient is 47, and the remainder is 1.

Therefore, 95 divided by 2 is equal to 47 with a remainder of 1.

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The probability  that a student chosen at random speaks Spanish but not French is 0.66

What is probability ?

Probability can be defined as the ratio of number of favourable outcomes and total number of outcomes.

Given ,

At a college, 20% of students speak Spanish, 6% speak French, and 4% speak both languages.

Conditional probability

let P(I) = 0.06, P ( S & I) = 0.04 and P (S) = 0.20

Finally to find P ( S  given I )

we use the theorem

P ( S given I ) = P (S & I) / P (I)

=  0.04 / 0.06

= 4/6

= 2/3 = 0.66

Hence, The probability  that a student chosen at random speaks Spanish but not French is 0.66

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Hope it helps. To know the values of all trigonometric ratios, see the table.

If you have any query, feel free to ask.