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Thepotemich [5.8K]
3 years ago
9

Help me Anyone please

Mathematics
1 answer:
HACTEHA [7]3 years ago
4 0
He works 5 hours per week. let x represent the number of weeks.

the equation is 5x=y

in the x boxes put: 1 2 3 and 4

in the y boxes multiply each number by 5.

x-y
1-5
2-10
3-15
4-20
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The answer is
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The real numbers $x$ and $y$ are such that \begin{align*} x + y &= 4, \\ x^2 + y^2 &= 22, \\ x^4 &= y^4 - 176 \sqrt{
tamaranim1 [39]

You get everything you need from factoring the last expression:

x^4-y^4=-176\sqrt7

The left side is a difference of squares, and we get another difference of squares upon factoring. We end up with

x^4-y^4=(x^2-y^2)(x^2+y^2)=(x-y)(x+y)(x^2+y^2)

Plug in everything you know and solve for x-y:

-176\sqrt7=(x-y)\cdot4\cdot22\implies x-y=\boxed{-2\sqrt7}

4 0
3 years ago
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What is the interest on a loan of $7,850 that is borrowed at 6.55% for 18 months?
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Answer:

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3 years ago
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Kay scored above 90% on five of her math quizzes, 80% to 90% on fourteen of them, and 70% to 80% on two of them. What is the exp
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3 years ago
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Sav [38]
So we can make an equation for this, being 7=1/3x, as that effectively says she can make 3 drawings per page.

Knowing this, we can multiply it by 3 to get x=21 (since if she can draw 3 drawings per page, we can imagine that if each drawing took a page she would need 3 times the pieces of paper), therefore she can make 21 drawings.
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3 years ago
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