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2 years ago

Evaluate the expression 2ab3 + 6a3 - 4ab2 when a = 2 and b = 4.

Mathematics

2 answers:

evablogger [386]2 years ago

7 0

2(2)(4)3+6(2)3-4(2)(4)2
48 + 36 - 64
74 - 64
= 10

nalin [4]2 years ago

3 0

2(2x4)3 + 6(2)3 - 4(2x4)2
(4x8)3 + (12)3 - (8x16)2
(32)3 + (12)3 - (128)2
96 + 36 - 256
-124

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You spin the spinner and flip a coin. Find the probability of the compound event.

Nitella [24]

Answer:

1/10

Step-by-step explanation:

The probability of flipping heads is 1 out of 2 or 1/2

The probability of getting a 5 on the spinner is 1/5

The probability of getting both is 1/2 * 1/5 = 1/10

You should try this out by listing all the ways this can happen.

Spinner Coin

1 H

2 H

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4 H

5 H

1 T

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2 years ago

In circle N with m See diagram below

Alex777 [14]

Answer:

$113.10$

Step-by-step explanation:

The area of a sector with measure $\theta$ and radius $r$ is given by $A_{sec}=r^2\pi\cdot \frac{\theta}{360^{\circ}}$ .

What we're given:

$r$ of 12
$\theta$ of $90^{\circ}$

Substituting given values, we get:

$A_{sec}=12^2\pi\cdot \frac{90}{360},\\\\A_{sec}=144\pi\cdot \frac{1}{4},\\\\A_{sec}\approx \boxed{113.10}$

8 0

2 years ago

How many pages can Jorge print in 3/5 of an hour if he can print 24 pages every 15 minutes?

MariettaO [177]

Answer:

57.6 pages

Step-by-step explanation:

First, you need to identify how many minutes are in 3/5 of an hour:

1 hour = 60 minutes

3/5 of an hour = 3/5 of 60 minutes

= 3/5(60)

= 36

So, you need to find out how many pages can be printed in 36 minutes. To figure this out, a ratio can be used:

15 : 24

36 : p

p represents pages in 36 minutes.

Now, you need to solve the ratio by figuring out what you need to multiply 15 by to get 36 and then multiplying that by 24:

15 * 36/15 = 36

36/15 = 2.4

24*2.4

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2 years ago

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alekssr [168]

Answer: either 46 or 25 is your answer

Step-by-step explanation: Brainliest pls

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2 years ago

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GrogVix [38]

Answer:

Since this means f of g so I will get the function g(x) and replace it with X in the function of f (x)

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2 years ago