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olga55 [171]
4 years ago
6

–8(–7r – 7) + 8 =-272​

Mathematics
1 answer:
Mademuasel [1]4 years ago
6 0

Answer:

-8(-7r-7)+8=-272

We move all terms to the left:

-8(-7r-7)+8-(-272)=0

We add all the numbers together, and all the variables

-8(-7r-7)+280=0

We multiply parentheses

56r+56+280=0

We add all the numbers together, and all the variables

56r+336=0

We move all terms containing r to the left, all other terms to the right

56r=-336

r=-336/56

r=-6

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Which function is shown in the graph below?
Georgia [21]

Answer:

D

Step-by-step explanation:

As you can see, the range of the graph is all real numbers greater than -4. Therefore you can tell that -4 will have to be in the equation leaving only options B and D. When graphing B and D, D fits the image.

4 0
3 years ago
From 1994 to 1995 the sales of a book decreased by 80%. If the sales in 1996 for the same as in 1994, By what percent did the in
zheka24 [161]

Answer:

400%

Step-by-step explanation:

Let the sales be "100" in 1994

Since, it decreased 80%, the sales was:

80% = 80/100 = 0.8

0.8 * 100 = 80 (decreased by 80)

So, it was

Sales in 1995: 100 - 80 = 20

Sales in 1996 was same as in 1994, so that's 100

Thus,

Sales in 1994: 100

Sales in 1995: 20

Sales in 1996: 100

We need to find percentage increase form 1995 to 1996, that is what percentage increase is from 20 to 100?

We will use the formula:

\frac{New-Old}{Old}*100

Where

New is 100

Old is 20

SO, we have:

\frac{New-Old}{Old}*100\\=\frac{100-20}{20}*100\\=4*100\\=400

So, it increased by 400%

3 0
4 years ago
-19 &lt; 5x + 6 &lt; 26<br> can someone please help
Fudgin [204]

Answer:

D

Step-by-step explanation:

6 0
3 years ago
Is anyone good at range?
scoray [572]
Hello,

adding 45 and 23, with these 2 datas, the range is already >=22.(45-23)

The new range cannot be 21
Answer A

5 0
3 years ago
Read 2 more answers
Will make bianleast no picture
natita [175]

Answer:  24, 24, 47

<u>Step-by-step explanation:</u>

In order to form a triangle, the sum of two sides must be GREATER than the third side for all combinations.

a + b > c       &       a + c > b        &        b + c > a

23 + 28 = 51 which is NOT greater than 55

15 + 30 = 45 which is NOT greater than  45

8 + 17 = 25 which is NOT greater than 25

24 + 24 > 47      &        24 + 47 > 24       &       24 + 24 > 27

all combinations are true so these side lengths can form a triangle

7 0
3 years ago
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