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2 years ago

Write the equation of a circle for which the endpoints of a diameter are (-2,-2) and (4,-10)

Mathematics

1 answer:

Lilit [14]2 years ago

4 0

I suggest using desmos (an app)

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(HELP ASAP PLEASE!!)

olasank [31]

Answer:

Shirts = $7

Shorts $17

Step-by-step explanation:

Let:

T - shirts

S - shorts

We can make two equations out of this problem:

4T + 3S = $79

7T + 8S = $185

Through substitution we can solve for one of the unknowns. We make one equation to solve for an unknown

$4T+3S=\$79\\\\3S = \$79-4T\\\\S=\dfrac{\$79-4T}{3}$

We use the formula of S and insert it into the other equation:

$7T+8(\dfrac{\$79-4T}{3}) = \$185\\\\7T + \dfrac{\$632-32T}{3}=\$185\\\\\dfrac{\$632-32T}{3}=\$185-7T\\\\\$632-32T=3(\$185-7T)\\\\$632-32T=\$555 - 21T\\\\-32T+21T=\$555-\$632\\\\-11T=-\$77\\\\\dfrac{-11T}{11}=\dfrac{-\$77}{11}\\\\T = \$7$

Thus T-shirts are $7 each.

Now that we know T, we can use it to solve for the other unknown. You can use it on any of the formulas.

$4T+3S=\$79\\\\4(\$7) + 3S = \$79\\\\\$28+3S =\$79\\\\3S=\$79-\$28\\\\3S=\$51\\\\S=\dfrac{\$51}{3}\\\\S = \$17$

We know then that Shorts are $17 each.

7 0

2 years ago

Written as a simplified polynomial in standard form, what is the result when

kompoz [17]

$2x-8 - (2x+7)^2\\\\=2x-8 -(4x^2 + 2\cdot 2x \cdot 7 + 7^2)\\\\=2x-8-(4x^2 + 28x +49)\\\\=2x - 8 -4x^2-28x -49\\\\=-4x^2 -26x -57\\\\$

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2 years ago

Lines m and n are parallel lines cut by a transversal l.

lord [1]

The second option. Angles 2 and 6 are corresponding angles, and 6 and 7 make a linear pair, so 2 and 7 are supplementary.

The first option doesn’t even mention angle 7, the third option doesn’t mention angle 2, and the last option doesn’t mention 7 either.

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2 years ago

Carlos worked 31.5 hours at a hospital as a volunteer. This represents 87.5% of his school’s requirement of community service. H

Artist 52 [7]

<span> 36 hours is the requirement</span>

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3 years ago

Jackson was selling cups of lemonade for a school football fundraiser. On Saturday, he sold a total of 26 cups.

marin [14]

Answer:

how much did he sell them for

because what ever it it just do 26x__

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2 years ago

Write the equation of a circle for which the endpoints of a diameter are (-2,-2) and (4,-10)​

Write the equation of a circle for which the endpoints of a diameter are (-2,-2) and (4,-10)