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Plz help me this is about using pythagorean therom to find isosolize triangels side lenghths. It really easy 7th grade math. Please help :) Thanks I will mark brainliest asap. WORTH EXTRA POINTS!

Plz help me this is about using pythagorean therom to find isosolize triangels side lenghths It really easy 7th grade math Please help Thanks I will mark brainl class=

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DeanR

It's an isosceles triangle so the height bisects the base making two right triangles with legs x/2 and y and hypotenuse √74.

(x/2)² + 7² = (√74)²

x²/4 + 49 = 74

x²/4 = 25

x² = 100

x = 10

Answer: C

hannah51536

Answer:

C. x=10

Step-by-step explanation:

Using the Pythagorean Theorem, you know that 7²+s²=(√74)², I'm using the variable s so we don't get confused with the other x variable.

Square root the numbers you can: 49+s²=74

Subtract 49 from both sides of the equation to isolate the variable: s²=25

Square root both sides to find the value of s: s=5

S is half of the value of x, so double s to get your answer, 10

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