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photoshop1234 [79]
3 years ago
15

Which of the following is an irrational number?

Mathematics
1 answer:
Serhud [2]3 years ago
6 0
A. 1.9 is an irrational number
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Sylvia earns $7 per hour at her after school job. After working one week, she received a paycheck for $91.
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Answer:

a.) hours=13

b.) h\leq 15

c.) $$105

Step-by-step explanation:

a.) If she earns $7 'per' hour, this multiplication. After a week, we need to see how many hours she worked to earn $91, so this goes behind the equal sign. Let <em>h</em> be the unknown number of hours:

7h=91

Solve for h. Divide both sides by 7:

\frac{7h}{7}=\frac{91}{7}\\\\h=13

Sylvia worked 13 hours at a rate of $7 an hour.

b.) She can work at most 15 hours a week. At 'most' can also mean less than or equal to. Let <em>h</em> be hours:

h\leq 15

Sylvia can work less than or equal to 15 hours per week.

c.) If Sylvia can work 15 hours, plug in this value for <em>h</em> into an equation when she earns $7 per hour. Let the product of the hours and money equal <em>t</em> for total:

t=7(15)\\t=105

The most money Sylvia can earn in a week is $105.

<em>Finito.</em>

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What is the length of BC in the right triangle below?
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Answer and Step-by-step explanation:

<u>How to solve:</u>

Use the Pythagorean Theorem to find the length of side <em>BC</em>.

<u>Pythagorean Theorem Formula:</u>

<u />A^2+B^2=C^2<u />

<u />

Side AB will be A, side AC will be B, and side BC will be C.

<u>Plug in values.</u>

8^2+15^2 = C^2\\\\\\64 + 225 = C^2\\\\289 = C^2\\Square.root.both.sides.\\\\\sqrt{289} = C\\17 = C\\\\\\

<u>This means the answer is A. 17.</u>

<u></u>

<u>I hope this helps!</u>

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3 years ago
Solve<br> y=-x2-2x-2<br> y=x-4
Free_Kalibri [48]

Step-by-step explanation:

y−x2+2x=−4y-x2+2x=-4 , y+x=2

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3 years ago
write an equation that demonstrates the relationship between x and y for the points plotted on the coordinate grid ​
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Explanation:

The y-intercept is -7 and the line is going up by a rate of 3.

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