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11 months ago

Rewrite in simplest terms: –8(9r – 1) — 9(-8r + 2)

Mathematics

1 answer:

NemiM [27]11 months ago

8 0

Solution

Step 1

Expand the brackets

8(9r-1) - 9(-8r + 2)

72r - 8 +72r -18

Step 2

Bring like terms together

72r + 72r -8 -18

Step 3

Sum and get the expression in its simplest for after factorization

144r -26

After factorization we will have in its simplest form the following answer

2 (72r -13)

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Write g-12 in words

larisa [96]

I'm guessing you are looking for an algebraic sentence. In that case, 12 less than g would make sense, or 12 subtracted from g

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3 years ago

What lever has resistance between the axis (fulcrum) and the force (effort)? A. first B. second C. third D. fourth Please select

luda_lava [24]

Answer:

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2 years ago

Read 2 more answers

37 For a class picnic, two teachers went to the same store to purchase drinks. One teacher purchased 18 juice boxes and 32 bottl

Pavel [41]

Answer:

Step-by-step explanation:

Let j represent the cost of a juice box.

Let w represent the cost of a bottle of water.

One teacher purchased 18 juice boxes and 32 bottles of water, and spent $19.92.. This means that

18j + 32w = 19.92 - - - - - - - - - - - - 1

The other teacher purchased 14 juice boxes and 26 bottles of water, and spent $15.76. This means that

14j + 26w = 15.76- - - - - - - - - - - - 2

Multiplying equation 1 by 14 and equation 2 by 18, it becomes

252j + 448w = 278.88

252j + 468w = 283.68

Subtracting, it becomes

- 20j = - 4.8

j = - 4.8/- 20 = 0.24

Substituting j = 0.24 into equation 1, it becomes

18 × 0.24 + 32w = 19.92

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32w = 19.92 - 4.32 = 15.6

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Kara's prices are incorrect.

the cost of a juice box is $0.24

the cost of a bottle of water is $0.4875

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3 years ago

Subtract x + 6 from −3x − 4. A) −4x − 10 B) 4x + 10 C) −2x + 2 D) −x + 10

Yuliya22 [10]

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3 years ago

The school chorus has 52 students which represents 26% of the seventh graders. How many students are in the seventh grade

barxatty [35]

Answer:

There are 200 students in the seventh grade.

Step-by-step explanation:

For equations like these, you have to use the is/of formula, which is:

Percent/100 = is/of.

Since you are trying to find how many students are in the seventh grade, this means that 52 is 26% of the total amount of students in the seventh grade. So, the formula would look like so:

26/100 = 52/n.

Next, you have to cross multiply, which means you would multiply 26 by n, and 52 by 100.

Then, you are going to have this left over from the cross multiplying:

5200 = 26n.

Divide 26 on both sides, leaving you with:

1n = 200, or n = 200.

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3 years ago