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3 years ago

John earns $7.50 per hour at his job. Becky's earnings are given by the equation P = 8.25x, where P is her

Mathematics

1 answer:

hodyreva [135]3 years ago

4 0

In 9 hours
john earns $67.5
becky earns $74.25
becky earns $6.75 more than john

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Solve y = x + 8 for x.<br> x= y + 8<br> x=y - 8<br> x= -y + 8<br> x = -y - 8

Anna007 [38]

X = y - 8

Step by step
Y = x + 8
x + 8 = y
-8 -8
x = y - 8

3 0

2 years ago

Sum of cubes: (a b)(a2 – ab b2) = a3 b3 Difference of cubes: (a – b)(a2 ab b2) = a3 – b3 Which products result in a sum or diffe

valentina_108 [34]

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

<h3>What is formula of sum of cubes and difference of cubes?</h3>

Formula of sum of cubes and difference of cubes are following

$(a+b)(a^2 -ab +b^2) = a^3+ b^3 \\\\\\(a - b)(a^2+ ab+ b^2) = a^3 - b^3$

(a)

$(x-4) \left(x^{2}+4 x-16\right)\\=(x-4) \left(x^{2}+4 x-4^2\right)\\\\$

by comparison with formula we can say that this is neither sum or nor difference of cubes.

(b)

$(x-1)\left(x^{2}-x+1\right)\\=(x-1)\left(x^{2}-x+1^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

(c)

$(x+1)(x-1)=x^{2}-1^{2}\\$

we can say that this is neither sum nor difference of cube as it's difference of squares.

(d)

$(x+4)\left(x^{2}-4 x+16\right)\\\\(x+4)\left(x^{2}-4 x+4^2\right)$

by comparison with formula this is equal to

$x^{3}+4^{3}\\$

Hence this is sum of cubes

(e)

$(x+4)\left(x^{2}+4 x+16\right)\\(x+4)\left(x^{2}+4 x+4^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

To know more about cubes visit: brainly.com/question/107100

8 0

2 years ago

Can someone help me and explain what to do here?

Vesna [10]

Answer:

∠STU = 69°

Step-by-step explanation:

The angle with vertex T is called an "inscribed angle." It intercepts arc SU. The relationship you are asked to remember is that the measure of the inscribed angle (T) is half the measure of the arc SU.

Point V is taken to be the center of the circle. The angle with vertex V is called a "central angle." It also intercepts arc SU. The relationship you are asked to remember is that the measure of the central angle (V) is equal to the measure of arc SU.

Using these two relationships together, we realize angle V is twice the measure of angle T:

∠SVU = 2×∠STU

18x +12° = 2(18x -57°) . . . . . . relationship between the marked angles

18x +12° = 36x -114° . . . . . eliminate parentheses

126° = 18x . . . . . . . . . . . add 114°-18x

∠STU = 18x -57° = 126° -57°

∠STU = 69°

_____

<em>Additional comment</em>

You may notice we did not solve for x. We only needed to know the value of 18x, so we stopped when we found that value. (Actually, we only need the value of 18x-57°. See below.)

<em>Alternate solution</em>:

(18x +12°) -(18x -57°) = 18x -57° . . . . . . . subtract 18x -57° from both sides of the first equation.

69° = 18x -57° . . . . . simplify. This is the answer to the problem.

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2 years ago

“X000” means what? Please explain

FromTheMoon [43]

Answer:

If your talking about texting ,then this means hugs and kisses

Step-by-step explanation:

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2 years ago

PLSSSS HELPP ASSPPPP!!!!

Ne4ueva [31]

The rate of change is 1.5

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3 years ago