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choli [55]
2 years ago
8

Evaluate a^7 - 4b for a =3 and b= -1

Mathematics
2 answers:
Nataly_w [17]2 years ago
8 0
A^7 - 4b when a = 3 and b = -1
= (3)^7 - (4)(-1)
= 3 * 3 * 3 - (-4)
= 27 - (-4)
= 27 + 4
= 32
Papessa [141]2 years ago
3 0

Answer:

2187+4

= 2191

Step-by-step explanation:

plz brainliest :)

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tino4ka555 [31]

Answer:

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3 0
2 years ago
What is the slope of a line perpendicular to the line whose equation is x-3y= -18 Fully simplify your answer.
qwelly [4]

Answer:

-3

Step-by-step explanation:

Isolate -3y by subtracting x from both sides

-3y = -18 - x

Divide everything by -3

y = 6 + 1/3x

Slope is 1/3, and perpendicular lines have the reverse reciprocal slope, so our slope is -3

7 0
1 year ago
A copy machine makes 44 copies per minute. How many copies does it make in 4 minutes and 15 seconds?
Gelneren [198K]

Answer: 102 copies

Step-by-step explanation:

4 minutes and 15 seconds are 4.25 minutes, so it will make 102 copies in that time

3 0
2 years ago
Read 2 more answers
Last week at the park Haeather ran 4 miles in 48 minutes when she runs her next race she Hope's to improve her time by 2 minutes
Korvikt [17]

Answer:

Haeather ran at a speed of 5 miles per hour.

Step-by-step explanation:

Given that last week at the park Haeather ran 4 miles in 48 minutes, to determine what was Haeather rate of speed in miles per hour the following mathematical calculation must be performed:

48/4 = 12

Thus, Haeather ran 1 mile every 12 minutes.

60/12 = 5

1 x 5 = 5

Therefore, Haeather ran at a speed of 5 miles per hour.

3 0
3 years ago
U = 6i – 10j<br> g= -81 – 11j<br> Find: -3u + 5g
VARVARA [1.3K]

Answer:

-3u + 5g =-58i -25j

Step-by-step explanation:

Given

u = 6i - 10j

g=-8i - 11j

Required

-3u + 5g

We have:

-3u + 5g

This gives:

-3u + 5g = -3(6i - 10j) + 5(-8i - 11j)

Open bracket

-3u + 5g = -18i + 30j - 40i - 55j

Collect like terms

-3u + 5g = -18i - 40i+ 30j  - 55j

-3u + 5g =-58i -25j

6 0
3 years ago
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