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3 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]3 years ago

5 0

Answer:

7x + 12

Step-by-step explanation:

15x + 10 - 8x + 2

i'm pretty sure that's it?

Eduardwww [97]3 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 first two steps in the derivation of the quadratic formula by completing the square are shown below.

lidiya [134]

Answer:C

Step-by-step explanation:

3 0

3 years ago

Diane sold t-shirts at a festival and made a profit of $84 . She made $6 for each t-shirt she sold. Her total expenses were $30.

sweet-ann [11.9K]

Answer:

9 t-shirts

Step-by-step explanation:

Well if she made a profit of $30 that would mean that you would subtract $84-$30 which would give you $54. Than you would divide 54/6 to find how much t-shirts she sold.

-Hope this helped (this is one of the first questions ive answered )

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3 years ago

Jonah was standing at an elevation somewhere between-1 1/2

erma4kov [3.2K]

Answer:

$=-\frac{23}{12},\ -2$ and many others

Step-by-step explanation:

The limits given for Jonah's elevation with regards to sea level are

$-1\frac{1}{2}$ and $-2\frac{1}{3}$

Any number belonging to that interval could be the requested answer. We'll pick the exact center (mean value) between them:

$-1\frac{1}{2} =-\frac{3}{2}$

$-2\frac{1}{3}=-\frac{7}{3}$

Computing the mean value:

$\frac{1}{2}\left (-\frac{3}{2}-\frac{7}{3} \right)$

$=\frac{1}{2}\left (-\frac{23}{6}\right)$

$=-\frac{23}{12}$

Since $-2\frac{1}{3}=-2.33$

And $-1\frac{1}{2}=-1.5$

Other numbers like -1.6,-2,-2,3 can be examples of the required answer

8 0

3 years ago

suppose that there were a positive correlation between the variables u and v. if v is 24 when u is 10, which of these is most li

Mkey [24]

Answer: 48

Step-by-step explanation: I got it wrong and it said the correct answer was 48

6 0

3 years ago

A construction crew must build 3 miles of road. On tuesday, they build 1/4 mile of road. How many miles of road do they still ha

chubhunter [2.5K]

Answer:

2.25 miles of road they have to build this week

Step-by-step explanation:

Given:

Total distance of the road = 3 miles

Distance constructed on Tuesday = 1/4 mile of road.

To Find:

Miles of road still have to be built this week=?

Solution:

Let the Distance that have to be built be X

Then,

X= total distance of the Road – the distance built on Tuesday

X = 3 – $\frac{1}{4} \text{ of the 3}$

X = 3 - $\frac{3}{4}$

X = $\frac{12 -3}{4}$

X= $\frac{ 9}{4}$

X= 2.25 miles

3 0

3 years ago