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bija089 [108]
3 years ago
13

Help: Simplifying inside parenthesis first

Mathematics
1 answer:
Ne4ueva [31]3 years ago
3 0

Answer:

4th one

Step-by-step explanation:

a^-2 goes down and become a^2 and

{a}^{2}  \times  {a}^{2}  =  {a}^{4}

b^-1 goes up and become b

{b}^{2}  \times  {b}^{1}  =  {b}^{3}

that why answer is 4th...mark me brainliest please

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How many math books and English books did Nicole purchase?
Ksju [112]
Create a system if equations to solve this.

First equation:
25m + 24e = 220

Second equation:
m + e = 9

Then you must solve the second equation for a variable.

Change m + e = 9 to e = 9 - m.

Then substitute (9 - m) for e in the first equation.

So 25m +24e = 220 becomes 25m + 24(9 - m) = 220.

Now you can solve the first equation because the only variable in it is m.

25m + 24(9 - m) = 220 (Original equation)
25m + 216 - 24m = 220 (Distribute)
m + 216 = 220 (Combine like terms)
m = 4 (Simplify)

Now plug in 4 for m in the second equation.

m + e = 9 (Original equation)
(4) + e = 9 (Substitute)
e = 5 (Simplify)

m represents Math Books and e represents English Books, so Nicole purchased 4 Math Books and 5 English Books.
6 0
3 years ago
Find the Mean, Median & Mode: 2, 6, 15, 3, 1, 8, 7
Marat540 [252]

Answer:

There is no mode

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What is the width of a rectangle with an area of 5/8 in. squared and a length of 10 inches?
Ad libitum [116K]
5/8=10×w this is my equation then i divide by 10 on both sides
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6 0
3 years ago
The measures of the angles of a triangle are ∠A = (2x)°, ∠B = (x+14)°, ∠C = (x−38)° Determine the value of x. Determine A B and
nexus9112 [7]

Answer:

Step-by-step explanation:

Measures of angles are,

m∠A = (2x)°

m∠B = (x + 14)°

m∠C = (x - 38)°

By triangle sum theorem,

m∠A + m∠B + m∠C = 180°

2x + (x + 14) + (x - 38) = 180

(2x + x + x) + (14 - 38) = 180

4x - 24 = 180

4x = 204

x = 51

m∠A = 2(51)° = 102°

m∠B = (51 + 14)° = 65°

m∠C = (51 - 38)° = 13°

4 0
3 years ago
6. A Texas school district wants to compare the effectiveness of a standard AP Statistics curriculum and a new "hands-on" AP Sta
Butoxors [25]

The subjects in the experiment are given as follows:

b) the two AP Statistics curricula.

<h3>What are the subjects of an experiment?</h3>

The subjects of an experiment are the hypotheses which are studied in the experiment.

For this problem, we are testing hypotheses involving two forms of the curriculum, hence the correct option is given by:

b) the two AP Statistics curricula.

More can be learned about the subjects of an experiment at brainly.com/question/2792045

#SPJ1

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2 years ago
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