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2 years ago

Simplify:-3(x-4)+7(4-x)-2(8x-10)

Mathematics

1 answer:

olga55 [171]2 years ago

3 0

Answer:

$-26x+60$

Step-by-step explanation:

First I like to write the whole equation.

$-3(x-4)+7(4-x)-2(8x-10)$

Now we should distribute where ever we see it's needed.

$-3x+12+28-7x-16x+20$

Next we combine the like terms.

$-26x+60$

That's it there's nothing else we can do now, it's in simplest form.

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Two students in the same Spanish class, Perry and Dakota, plan to get together after school

shtirl [24]

Answer:

Dakota=20 perry=25 together= 45

Step-by-step explanation:

First step, remember to keep 5

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2 years ago

Rosie buys 1/2 of a watermelon at the farmer's market. She shares it equally with her two best friends. 1/2 divided by 3. How mu

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1/2 divide by 3 or 1/[2(3)] which will be equal to 1/6

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3 years ago

Read 2 more answers

Abc bookstore sells new books, n, for $12, used books, u, for $8, and magazines, m, for $5 each. The store earned $340 revenue l

poizon [28]

Answer:

The number of new books sold = 10

The number of used books sold (u) = 15

The number of magazines sold (m) = 20

Step-by-step explanation:

Let us assume the number of new books = n

So, the number of used books sold (u) = New books sold + 5 = n + 5

Also, the number of magazines sold (m) = 2 x ( Number of new books sold)

= 2 n

⇒ u = n + 5, m = 2 n

Here, the cost of each new book n- = $12

So, the cost of n new books = n x ($12) = 12 n

the cost of each used book u = $8

So, the cost of u = (n+ 5) used books = n+5 x ($8) = 8 n + 40

the cost of each magazine m = $5

So, the cost of m = (2n ) magazines = 2n x ($5) = 10 n

Also, total earnings = $340

⇒ 12 n + 8n +40 + 10 n = 340

or, 30 n = 300

or,n = 300/30 = 10

Hence the number of new books sold = n = 10

The number of used books sold (u) = n + 5 = 15

The number of magazines sold = m = 2 n = 20

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2 years ago

PLEASE HELP! A campground rents bicycles by the hour. The total cost y to rent a bicycle, including deposit, is presented by the

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The range is given by:

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The domain is given by:

$\boxed {D=(x\in R \mid 3\leq y \leq 27)}$

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2 years ago

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natulia [17]

Answer:

1. x= -11/3

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3 0

3 years ago