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2 years ago

5(3x+2)-2(4x-1) Can someone help me by showing step by step on what to do please?

Mathematics

2 answers:

Harman [31]2 years ago

5 0

Answer:

7x + 12

Step-by-step explanation:

15x + 10 - 8x + 2

i'm pretty sure that's it?

Eduardwww [97]2 years ago

4 0

To solve this we need to use this formula:

$a(b + c) = ab + ac$

$5(3x + 2) - 2(4x - 1) = 15x + 10 - 8x + 2 = \\ = 7x + 12$

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The store bought a computer for $850, and sold it for $1105. What percentage was the markup?

Damm [24]

Answer:

30%

Step-by-step explanation:

1105 - 850 = 255

255 ÷ 850 = 0.3

0.3×850=30

30%

7 0

3 years ago

Jim’s football team started a play on the 50 yard line. On the first play, the team had a 7-yard gain. On the second play, they

lawyer [7]

This is a basic addition/subtraction question. It's saying that they started at the 50 yard line. On the play, they gained 7 yards. So, we'll add 50+7 = 57.

They're at the 57 yard line at this point. On the second play they lost 10 yards (how unfortunate). Thereby, we will subtract 57-10=47.

50 yards +7 yards. -10 yards.

The answer will be that they'll be on the 47 yard line on the next play.

5 0

2 years ago

Read 2 more answers

Can someone help with this?

valina [46]

Answer:

(a) is 8 x 7 x 3 = 168

(b) is 8 x 7 = 56

(b2) is weird I don't know what it's asking

7 0

2 years ago

What is reciprocal of 3/10

algol13

To get the reciprocal, simply flip the numerator and denominator. The reciprocal of 3/10 is 10/3.

7 0

3 years ago

A movie collector has 105 movie posters and 90 band posters if she sells 21 movie posters then how many band posters should she

kotykmax [81]

Hi there! :)

Answer:

In order to maintain the same ratio, she should sell 18 band posters.

Step-by-step explanation:

Initial ratio:

Ratio is: 105 movie posters for 90 band posters = 105 : 90

She sells 21 movie posters, which means that we are left with 105 movies minus the 21 she sold.

105 - 21 = 84 → She now has 84 movie posters.

In order to answer your question, you'll need to use the cross product method:

105 movie posters → 90 band posters

84 movie posters → X

(90 × 84) ÷ 105 = X

7,560 ÷ 105 = X

72 = X ⇒ Number of band posters she should have left to maintain the same ratio.

She has 90 band posters :

90 - X = 72

Add "X" to each side of the equation → 72 + X = 72 + X

90 = 72 + X

Subtract 72 from each side of the equation → 90 - 72 = 18

18 = X

There you go! I really hope this helped, if there's anything just let me know! :)

4 0

3 years ago