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navik [9.2K]
4 years ago
8

AC = 143, BC = 8x + 4, and AB = 7x + 4, Find BC.

Mathematics
1 answer:
dedylja [7]4 years ago
5 0

Answer:

Hope this helps you mate

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Gaira was asked to evaluate the algebraicexpression –3.8x + 6 when x = –7.5.
icang [17]

gaira ALSO multiplied 6 by x, when 6 doesnt have 6x.

so the correct answer would be only -3.8(-7.5) + 6 which is 34.5.

5 0
3 years ago
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Lin runs fro25 seconds at 8.2 meters per second. What is her finish point?
Lemur [1.5K]

Answer:

Distance = 205 meters

Step-by-step explanation:

Distance = rate multiplied by time

We know the time = 25 seconds

and the rate = 8.2 meters per second

Distance = 8.2*25

Distance = 205 meters

5 0
3 years ago
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Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o
Art [367]

Answer:

The value will be used as the point estimate for the mean endowment of all private colleges in the United States is of 180.975 millions of dollars.

Step-by-step explanation:

When we have a sample, the mean of the sample is used as the point estimate for the mean of the entire population.

What value will be used as the point estimate for the mean endowment of all private colleges in the United States?

We have to find the mean of the 8 colleges. So

M = \frac{60.2 + 47.0 + 235.1 + 490.0 + 122.6 + 177.5 + 95.4 + 220.0}{8} = 180.975

The value will be used as the point estimate for the mean endowment of all private colleges in the United States is of 180.975 millions of dollars.

4 0
3 years ago
What is the world’s predicted population in the year 2020, rounded to the nearest million?
deff fn [24]

Answer:

B

Step-by-step explanation:

Given

P_0=5642000000 people

Growth Rate=i=1.3%

Since the years will be counted from 1994

So for 2020 population:

n=26 years

Using the formula,

P_n= P_0 e^in

Putting the values,

P_n=(5642000000)*(2.71828)^(0.013*26)

P_n=(5642000000)*1.40214

P_n= 7910874921.6228

Rounding off to nearest million

P_n= 7911000000 people

4 0
3 years ago
Evaluate the algebraic expression 2x + y- z when w = 12, x = 10, 5 and z = 9
Lesechka [4]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
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