All categories

3 years ago

If a = 5, what is the value of 2a2 - 3a + 11 ? A. 16 B. 46 C. 71 D. 96

Mathematics

2 answers:

Flura [38]3 years ago

5 0

Answer:

a. 16

Step-by-step explanation:

2(5)(2) = 20; 20 - 3(5) = 5; 5 + 11 = 16

I hope I did this right. Good luck

fgiga [73]3 years ago

5 0

Answer:

B. 46

Step-by-step explanation:

2(5)^2-3(5)+11

PEMDAS (exponent)

2(25)-3(5)+11

PEMDAS

50-15+11

subtract (because it came before addition)

50-15= 35+11

final step add

You might be interested in

If <img src="https://tex.z-dn.net/?f=x-12%5Csqrt%7Bx%7D%20%2B36%3D0" id="TexFormula1" title="x-12\sqrt{x} +36=0" alt="x-12\sqrt{

Elis [28]

Answer:

x = 36

Step-by-step explanation:

$x - 12\sqrt{x} + 36 = 0$

Subtract x and 36 from both sides.

$-12\sqrt{x} = -x - 36$

Divide both sides by -1.

$12\sqrt{x} = x + 36$

Square both sides.

$144x = x^2 + 72x + 1296$

Subtract 144x from both sides.

$0 = x^2 - 72x + 1296$

Factor the right side.

$0 = (x - 36)^2$

$x - 36 = 0$

$x = 36$

Since the solution of the equation involved squaring both sides, we musty check the answer for possible extraneous solutions.

Check x = 36:

$x - 12\sqrt{x} + 36 = 0$

$36 - 12\sqrt{36} + 36 = 0$

$36 - 12\times 6 + 36 = 0$

$36 - 72 + 36 = 0$

$0 = 0$

Since 0 = 0 is a true statement, the solution x = 36 is a valid solution.

6 0

4 years ago

What is 12 5/25 as a mixed number in simplest form?

creativ13 [48]

12 5/25 as a simplified mixed number would be 12 1/5

8 0

3 years ago

Read 2 more answers

In the figure shown below, OA and OB are radio of the circle with center O. If m

SVEN [57.7K]

Answer: try the 62

Step-by-step explanation:

8 0

3 years ago

PLEASEE HELP I NEED IT its about due

kherson [118]

Answer:

∠GJK is 22°

Step-by-step explanation:

Because the shape is a rectangle we know that GH is parallel to JI

This means that because of the alternate angle rule we know that

5x+8 = 7x-16

Then we solve for x

5x+8-5x = 7x-16-5x

8+16=2x-16+16

$\frac{24}{2}$ = $\frac{2x}{2}$

x=16

So this means that ∠HJI is 68°

Because the shape is a rectangle we know that ∠GJI is a right angle

This means that ∠GJK is 90-∠HJI because of the angles on a right angle rule

90-68 =22

∴∠GJK is 22°

4 0

3 years ago

Please help! I’ll give brainliest!

Jlenok [28]

Answer:

27 degrees withI think angle sum postulate

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers