3 years ago

What are the roots of the equation x^2+10x=30.

Mathematics

1 answer:

My name is Ann [436]3 years ago

7 0

Idk i'm very confused on this...anyone else?

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2(h - 8) - h = h - 16

tresset_1 [31]

$2(h-8)-h=h-16$

$2h-16-h=h-16$

$h=h$

h has infinitely many solutions.

5 0

2 years ago

How do i find the area of a trapezoid (pictures provided)

scoray [572]

Answer:

(10x - 5) square units.

Step-by-step explanation:

Let the lengths of equal sides be x units.

Hence, AB + AD + DC = x + x + x = 3x

Therefore, BC = 3x - 2

$Area \: of \: trapezoid \\ = \frac{1}{2} (AD + BC) \times 5 \\ = \frac{1}{2} (x + 3x - 2) \times 5 \\ = \frac{1}{2} (4x - 2) \times 5 \\ = \frac{1}{2} \times 2 (2x - 1) \times 5 \\ = (2x - 1) \times 5 \\ = (10x - 5) \: {units}^{2}$

5 0

3 years ago

Use the remainder theorem to determine the remainder when 3t2 + 5t − 7 is divided by t − 5. A. 93 B. 43 C. 107 D. 57

Usimov [2.4K]

Using remainder theorem, we get:

$P(t) = 3t^{2} + 5t - 7$

Substitute t = 5 into the equation:
$P(5) = 3(5)^{2} + 5^{2} - 7$
$P(5) = 75 + 25 - 7 = 93$

Thus, we get a remainder of 93 or (A)

7 0

3 years ago

Read 2 more answers

A globe company currently manufactures a globe that is 16 inches in diameter. If the dimensions of the globe were reduced by hal

Veseljchak [2.6K]

Answer:

D. 267.9 in3

Step-by-step explanation:

So we know the diameter is 16 inches.

So we need to find the radius and we do that by: 16/2 = 8 then it is reduced by half: 8/2 = 4

Now we need to find the volume.

V= 4/3 times 3.14 times 4^3= 268.08

So we would need to round which would give us 267.9 in3.

Therefore the answer is the D. 267.9 in3.

I hope this helps!!!

4 0

3 years ago

Read 2 more answers

When x=4 what is the value of 8x

Naddik [55]

8*4=32 :) I hope this helps!

5 0

3 years ago