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4 years ago

2) Brian purchased pens for 75 cents each and pencils for 40 cents each he

Mathematics

1 answer:

svet-max [94.6K]4 years ago

8 0

Step-by-step explanation:

Name the total of pens purchased as x and the pencils as y... Make two equations and solve them. I also search for the pencils purchased in addition

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Which is the value of this expression when p=-2 and q=-1?

saul85 [17]

Answer:

D. 4

Step-by-step explanation:

$[(p^2) (q^{-3}) ]^{-2}.[(p)^{-3}(q)^5] ^{-2}\\\\=[(p^2) (q^{-3}) \times(p)^{-3}(q)^5 ]^{-2}\\\\=[(p^{2}) \times(p)^{-3} \times (q^{-3}) \times(q)^5 ]^{-2}\\\\=[(p^{2-3}) \times (q^{5-3}) ]^{-2}\\\\=[(p^{-1}) \times (q^{2}) ]^{-2}\\\\=(p^{-1\times (-2)}) \times (q^{2\times (-2) }) \\\\=p^{2}\times q^{-4} \\\\= \frac{p^2}{q^4}\\\\= \frac{(-2)^2}{(-1)^4}\\\\= \frac{4}{1}\\\\= 4$

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3 years ago

What is three fourth divided by four

kap26 [50]

3/4 divided by 4 is 0.1875

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3 years ago

Read 2 more answers

Factor -7x = 21x2 = 3x - 9 by grouping

Verdich [7]

The correct answer is Zero

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3 years ago

A submarine is 105 ft below the surface of the water, and it begins to ascend at a rate of 3 ft per min. After how many min will

guapka [62]

Answer:

7 2/3 minutes

Step-by-step explanation:

We can write this equation in y = mx+b form

where m = 3 ft/min and b = -105 ft

x is the number of minutes and y is the depth

y = 3 * x -105

We want to find when y = -82

-82 = 3x -105

Add 105 to each side

-82+105 = 3x-105+105

23=3x

Divide by 3

23/3 = 3x/3

23/3=x

Changing into a mixed number

3 goes into 23 7 times with 2 left over

7 2/3 minutes

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3 years ago

4trig review please help me

egoroff_w [7]

Answer:

$4 \sqrt{3}$

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3 years ago