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4 years ago

5

Need Assistance With ThisPlease Show Work

1 answer:

artcher [175]4 years ago

3 0

Answer:

a =7.5

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2+ b^2 = c^2 where a and b are the legs and c is the hypotenuse

a^2 + 10 ^2 = 12.5^2

a^2 + 100 =156.25

Subtract 100 from each side

a^2 = 56.25

Take the square root of each side

sqrt(a^2) = sqrt( 56.25)

a =7.5

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3 years ago

HOTS Question:<br>Solve: 2xy /x+y = 3/2, x+y≠0 and xy / 2x-y = -3 / 10, 2x-y≠0

andreyandreev [35.5K]

$x = \frac{1}{2}$ and $y = - \frac{3}{2}$

Step-by-step explanation:

$\frac{2x}{x + y} = \frac{3}{2}$

$= > \frac{x + y}{xy} = \frac{4}{3}$

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Let

$\frac{1}{x} = u$ and

$\frac{1}{y} = v$ .

Then, from Eq. 1 & 2, we get:

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$- u + 2v = - \frac{10}{3}$

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$- 3u + 6v= - 10$

By adding, we get,

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Substituting "y" got above in Eq.1, we get,

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3 years ago

Read 2 more answers

Which of the value of x satisfies the equation below -2x-7=12

Masteriza [31]

Answer is A.
You start by adding the 7 to the opposite side. Giving you 19. You divide both sides by -2 which gives you x on one side and -9.5 on the other.

-2x-7=12
-2x=12(+7)
-2x=19
x=19/-2
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3 years ago

WILL GIVE BRAINIEST!! In triangle PQR, PQ = 13, QR = 14, and PR = 15. Let M be the midpoint of QR. Find PM.

Oduvanchick [21]

Answer:

6.5

Step-by-step explanation:

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3 years ago