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blsea [12.9K]
3 years ago
9

What is the value of x using the Pythagorean theorem?

Mathematics
1 answer:
Vesnalui [34]3 years ago
8 0
A^2+b^2= c^2

Plug in the points. the longest side is always c.

95.2^2+ b^2= 168^2.

Square the numbers.

9063.04+ b^2= 28224

Subtract 9063.04 on both sides.

b^2= 19160.96

Find the square root. 

b= 138.423119456

Or, b= 138.4 (rounded down)

I hope this helps!
~kaiker
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How to solve each equation by completing a square -4x^2+10x-40=-9x^2
Ilia_Sergeevich [38]

Answer:

x = -4 or 2

Step-by-step explanation:

-4x² + 10x − 40 = -9x²

First, move the x terms to one side and the constant to the other.

5x² + 10x = 40

Divide by the leading coefficient:

x² + 2x = 8

Take half of the b coefficient, square it, then add to both sides.

(2/2)² = 1

x² + 2x + 1 = 8 + 1

x² + 2x + 1 = 9

Factor the perfect square:

(x + 1)² = 9

Solve for x:

x + 1 = ±3

x = -1 ± 3

x = -4 or 2

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3 years ago
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When you add 6 to the product of a number and 10, the result is 36. What is the number?
n200080 [17]

Answer: the number is 3.

Step-by-step explanation:

(x × 10) + 6 = 36

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Some Field Experience in the use of an Accelerated Method in Estimating 28-Day Strength of Concrete" considered regressing y =28
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Answer:

<h2>(a) 5,050 psi.</h2><h2>(b) 5,051.3 psi.</h2><h2>(c) 5,180 psi.</h2><h2>(d) 4,920 psi.</h2>

Step-by-step explanation:

The given function is

y=1800+1.3x

Where x represents the accelerated strength in psi, and y represents 28-day standard-cured strength in psi.

Part a is about finding the y-value for x=2500

y=1800+1.3(2500)=1800+3250=5,050

Therefore, the expected value of 28-day strength when accelerated strength is 2,500, is 5,050 psi.

Part b is about the y-value for x=2501

y=1800+1.3(2501)=1800+3251.3=5,051.3

Part c is about the y-value for x=2600

y=1800+1.3(2600)=1800+3380=5,180

Part d is about the y-value for x=2400

y=1800+1.3(2400)=1800+3120=4,920

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3 years ago
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Answer:

The value is 81

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