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Sindrei [870]
3 years ago
14

75. Simplify the expression: -2x(4x^2 - 5x + 3)

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

-2x(4x² - 5x + 3)    Distribute/multiply -2x into (4x² - 5x + 3)

(4x²)(-2x) - (5x)(-2x) + (3)(-2x)

-8x³ + 10x² - 6x


Your answer is the 3rd option

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You have been asked to build a scale model of your school out of toothpicks. Imagine your school is 30 feet tall. Your scale is
adelina 88 [10]

Alright, let's begin! We start with 37.8 and then divide it with..7.6! Now, we try to get the answer of that.

37.8 ÷ 7.6 = 4.973.

However, we need to bring it down to an estimate. It would then be 4.97. Although, we need to also see if our answer is correct.

4.97 × 7.6 = 37.7

There is more answers closer to the number but this should be the correct answer due to it being the answer of all the steps I used.

But wait! We need the round the answer to the nearest whole number. So, it would be 38.

So, overall, it will be 38 cotton swabs tall.

Hope this helps!

If you are needing any other help, tell me in the comments below this answer! If you want any contact tell me and I'd be glad to help.

8 0
4 years ago
Maria plans to double the amount of time she spends walking per day each week.she starts , on week 1 , walking 5 minutes per day
alisha [4.7K]

Answer:

a) 160 minutes per day

b) Find the graph attached

c) on 10th week Maria would be walking  2560 minutes per day

Step-by-step explanation:

Week 1 - 5 minutes per day

Week 2 - 10 minutes per day

Week 3 - 20 minutes per day

Week 4 - 40 minutes per day

Week 5 - 80 minutes per day

Week 6 - 160 minutes per day

a) 160 minutes per day

b) Find the graph attached

c) on 10th week Maria would be walking  2560 minutes per day

5 0
3 years ago
9) (1 - 6x) + (7x + 3)10) (-4x + 4) – (8x + 7)11) (-x - 3) + (3x + 8)12) (7 + a)-(-7a + 1)14) (-3k - 1) + (7 + 2k)
seraphim [82]

We solve as follows:

(1-6x)+(7x+3)=x+4(-4x+4)-(8x+7)=-12x-3(-x-3)+(3x+8)=2x+5(7+a)-(-7a+1)=8a+6(-3k-1)+(7+2k)=-k+6

6 0
1 year ago
Someone please help me fast ( work out the missing area in each pair of similar shapes !!!)
34kurt
Make them into fractions. 9/3, 480/32, and 10/4. Now try to make the denominators the numbers below the shape and then find the number that works for that fraction.
4 0
4 years ago
Help i dont know what to do
Vsevolod [243]
Hey so the answer is D because when you subtract you would get the other side of the problem
6 0
3 years ago
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