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4 years ago

I KNOW THIS IS PROBABLY EASY. but i need help thx.

Mathematics

1 answer:

sp2606 [1]4 years ago

7 0

Answer:

The answer is C

Step-by-step explanation:

That's the Pythagorean theorem which is a^2+b^2=c^2

8*8=64

5*5=25

64+25=89

Then you find the square root of that, so the answer is C

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the curved surface of a cylindrical surface is 704 cm square calculate the height when the radius is 8cm

AlexFokin [52]

Answer:

CSA of cylinder = 704cm²

We know that

CSA of cylinder = 2πrh

or 2πrh = 704

or, 2*22/7 *8 *h = 704 ( since r=8cm)

or, 352h = 704*7

or, h = 4928/352 = 14cm

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3 years ago

For the function f(x) and g(x) given in the graph. Find f(g(2))

Katen [24]

Answer:

f(g(2)) = 4

Step-by-step explanation:

find g(2) then substitute the value obtained into f(x)

locate x = 2 on the x- axis, go vertically up to meet g(x) at (2, 5 )

locate x = 5 on the x- axis, go vertically up to meet f(x) at (5, 4 )

then f(g(2)) = 4

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2 years ago

Translate this phrase into an algebraic expression.

Anna007 [38]

Answer:

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Step-by-step explanation:

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3 years ago

The perimeter of a kite is 50 mm. The length of one of its sides is 1 mm more than twice the length of another. Find the length

rosijanka [135]

Answer:

The length of the longest side is 13mm

Step-by-step explanation:

Represent the two sides with a and b, where a is the longest

$Perimeter = 50$

$a=b + 1$

Required

Determine the length of the longest side

Perimeter of a kite is calculated as thus:

$Perimeter = 2(a + b)$

Make b the subject in $a=b + 1$

$b = a -1$

Substitute a - 1 for b and 50 for Perimeter in $Perimeter = 2(a + b)$

$50 = 2(a + a - 1)$

Divide through by 2

$25 = a + a - 1$

$25 = 2a- 1$

Add 1 to both sides

$25 + 1 = 2a - 1 +1$

$25 + 1 = 2a$

$26 = 2a$

Solve for a

$a = 26/2$

$a = 13$

<em>Hence, the length of the longest side is 13mm</em>

4 0

3 years ago

What is value of -x^2 -4x -11 if x = -3

maksim [4K]

Your answer is -8. I did it out of order. My apology.

3 0

4 years ago

Read 2 more answers