Do these pairs of values (x and ) represent two quantities that are
proportional?
ху
35
47
6 10
9 15

Answer:

The answer is A.

Step-by-step explanation:

Let's solve your equation step-by-step.

x2+2x−15=0

Step 1: Factor left side of equation.

(x−3)(x+5)=0

Step 2: Set factors equal to 0.

x−3=0 or x+5=0

x=3 or x=−5

Answer:

x=3 or x=−5

The solutions of the given quadratic equation are x=-5 and x=3. Therefore, option A is the correct answer.

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

The given quadratic equation is x²+2x-15=0.

By using splitting middle term method, we get

x²+5x-3x-15=0

x(x+5)-3(x+5)=0

(x+5)(x-3)=0

x+5=0 and x-3=0

x=-5 and x=3

Therefore, option A is the correct answer.

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Answer:

63/4 or 15 3/4 miles each day

Step-by-step explanation:

Answer:15.75

Step-by-step explanation:63/4 = 15.75

Answer:

f (x) = 2x^8 + 4x^7

Step-by-step explanation:

I simplified the expression

Sorry, that's how I understood the question

Hope this helps

Answer:

×=14

Step-by-step explanation:

(3x+7)+90+(4×-15)=180

7×+82=180

7×=98

x=14

Answer:

×=14

Step-by-step explanation:

(3x+7)+90+(4×-15)=180

7×+82=180

7×=98

x=14

Answer:

B) is the answer

Step-by-step explanation:

Answer:

17.04, 17.34, 17.7

Answer:

The standard form of equation of the line through the given points. through (0.-4) and (-3,-2) is [tex]\frac{2}{3}x+y=-4[/tex]

Step-by-step explanation:

The standard form of equation is [tex]Ax+By=C[/tex]

Finding slope

Using the given points (0,-4) and (-3,-2) we can find slope using formula:[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]Slope=\frac{-2-(-4)}{-3-(0)}\\Slope=\frac{-2+4}{-3} \\Slope=-\frac{2}{3}[/tex]

Finding y-intercept

Using point (0,4) and Slope=-2/3 we can find y-intercept

[tex]y=mx+b\\-4=-\frac{2}{3}(0)+b\\-4=0+b\\b=-4[/tex]

The slope intercept form of the line through the given points. through (0.-4) and (-3,-2) having slope =-2/3 and b=-4 will be:

[tex]y=mx+b\\y=-\frac{2}{3}x-4[/tex]

Now, standard form of equation will be: [tex]\frac{2}{3}x+y=-4[/tex]

So, The standard form of equation of the line through the given points. through (0.-4) and (-3,-2) is [tex]\frac{2}{3}x+y=-4[/tex]

Answer: its A i think

Step-by-step explanation

Answer:

I think 200x3

Step-by-step explanation:

200x3 = 600

Answer: 600 meters

Step-by-step explanation: 3/1 x 200/1 = 600 meters

Answer:

1 and 2/3 tasks

Step-by-step explanation:

a) A robot can complete 7 tasks in 3/5 hours.

This means ;

7 tasks = 3/5 hours

1 task = ?

perform cross- multiplication as;

{1*3/5} /7

3/35 hours

b)

3/5 hours = 1 task

1 hour = ?

{1*1} / 3/5

1 / 3/5

1 * 5/3

1 and 2/3 tasks

Answer:

i know its hard on computer

Step-by-step explanation:

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[tex] {5}^{ {3}^{5} } = {5}^{3 \times 5} = {5}^{15} [/tex]

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Thus the correct answer is (( B )) .

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Step-by-step explanation:

It depends in the type on interest

Simple Interest

PxRxT

£240 x 0.07x 3 = £50.4

£240 + £50.4 = £290.4

Compound Interest

Px(1+R)^T

£290.4 x (1 + 0.07)³ = £355.7524872= €355.76

Answer:

1/2

Step-by-step explanation:

14/28=1/2

hopefully this helps :)

Answer:

160 sandwiches/hour

Step-by-step explanation:

To find his unit rate, divide 400 by 2.5, since he can make 400 sandwiches in 2.5 hours:

400/2.5

= 160

This means he can make 160 sandwiches in 1 hour.

So, his unit rate is 160 sandwiches/hour

Answer:

what form is the question?

Answer:

the answer is 3

Step-by-step explanation:

because if he has to wear one he has to wear ties otherwise he wont be able to wear anymore ties after three days.

Answer:

1. Angle Bisector Theorem

(2x-1)/3x=9/15

15(2x-1)=9(3x)

30x-15=27x

3x=15

x=5

2. Triangles are similar so the ratio that relates them is 6/36=1/6 meaning the side length is 42x1/6=7 cm.

Answer:

√27

Step-by-step explanation:

√9, √36, and √81 are rational

Answer:

A and B are 4

Step-by-step explanation:

because of the 45 45 90 theorem. knowing the rule allows you to solve it really easily

Answer:

mode is the most occuring number which is in this case 11

you get the median by putting them in order from least to greatest and them marking them out until you get to the middle but if there are two numbers in the middle you add them and then divide by two and that is your median but in this case your median is 11

you get the mean by adding all the numbers together and dividing by how many numbers there are so in this case you are dividing by 9 and when you add oall of these numbers together you get 98 and 98/9 is 10.8888888889 which you would round and get 10.9

hope this helps

Answer:

22, 25, 28

Step-by-step explanation:

The table of values represents a linear function.

The complete table of values is:

[tex]\left[\begin{array}{cccc}x&4&5&6\\y&22&25&28\end{array}\right][/tex]

The function is given as:

[tex]\mathbf{y = 3x+10}[/tex]

When x = 4

[tex]\mathbf{y = 3 \times 4+10 = 22}[/tex]

When x = 5

[tex]\mathbf{y = 3 \times 5+10 = 25}[/tex]

When x = 6

[tex]\mathbf{y = 3 \times 6+10 = 28}[/tex]

So, the complete table of values is:

[tex]\left[\begin{array}{cccc}x&4&5&6\\y&22&25&28\end{array}\right][/tex]

Read more about linear tables at:

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Answer:

-3

Step-by-step explanation:

let the unknown be x.

x multiply by -5 = 9-2x

-5x=9-2x

-9=3x

x=-3

2.25 - 11j - 7.75 + 1.5j = 0.5j - 1

(2.25 - 7.75) + (-11j + 1.5j) = 0.5j - 1

-5.5 -9.5j = 0.5j - 1

-9.5j -0.5j = -1 + 5.5

-10j = 4.5

j = 4.5/-10

j = -0.45

Answer:

A. j=-0.45

Step-by-step explanation:

Answer:

[tex]\frac{1}{2} [sin(4x)-sin(2x)][/tex]

Step-by-step explanation:

Use the Product-Sum identity to turn cos(3x) sin x into a sum.

Formula: cos(u) + sin(v) = [tex]\frac{1}{2}[sin(u+v)-sin(u-v)][/tex]

Plug 4x and 2x for u and v into the formula: [tex]\frac{1}{2}[sin(3x+x)-sin(3x-x)][/tex]

Simplify: [tex]\frac{1}{2}[sin(4x)-sin(2x)][/tex]

:)

The expression is equivalent to cos(3x) sin x will be   1/2 [sin (4x ) - sin (2x)].

Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.

Formula we will use;

cos(u) + sin(v) = 1/2 [sin (u +v ) - sin (u - v)]

Now, Plug 4x and 2x for u and v into the formula:

1/2 [sin (3x + x ) - sin (3x - x)]

Simplify:

 1/2 [sin (4x ) - sin (2x)]

Learn more about expression here;

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Answer:

568/1000

Step-by-step explanation:

Answer:

I = 30,000 + 0.20 =80,000

Step-by-step explanation:

If you pose a question as Which equation can be used to calculate Kimmy's total sales,

then that suggests that we're to be given several options from which to choose.