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olganol [36]
3 years ago
5

-2(9 + 3n) - 9 (1 - 10n)*

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
5 0

Answer:

-27+84n

Step-by-step explanation:

-2(9 + 3n) - 9 (1 - 10n)

First, Distribute the -2 and -9

18-6n-9+90n

Next, combine like terms (18n and 90n) (-4 and -9)

leaving you with -27 + 84n

GuDViN [60]3 years ago
4 0

Answer:

-27+84n

Step-by-step explanation:

You might be interested in
Rani scores 4 times as many baskets as Layla. Tash scores 8 baskets less than Rani. They score 100 baskets in total. How many ba
Sever21 [200]

Answer:

Tash scores 40 baskets

Step-by-step explanation:

Rani = R

Layla = L

Tash = T

R = 4L

T = 4L-8

As L + R + T = 100

L + 4L + 4L-8 = 100

Collect like terms

9L - 8 = 100

+ 8 both sides

9L = 108

divide by 9 both sides

L = 108 / 9

L = 12

Now..... T = 4L-8 substitute L with 12

T = 48 - 8

T = 40

8 0
3 years ago
Need help for 18) 21) Solve each equation and check. Show all work please
Alexxandr [17]
18) (10)7d/10=35(10)
7d/7=350/7
d=50
21) 3/4 w=27
(4/3)3/4 w=27(4/3)
w=36
Hope this helps!
5 0
3 years ago
Pemdas? thank you!<br>(-12 ÷ 3) × 2 + 23<br>​
lana66690 [7]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

( - 12 \div 3) \times 2 + 23 =

( - 4) \times 2 + 23

- 8 + 23 =

23 - 3 - 5 =

20 - 5 = 15

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

3 0
3 years ago
Does anyone get this​
ivolga24 [154]

Answer:

Step-by-step explanation:

Ok so to find constant of proportionality, you need to find K.

X would be gallons and y is cost.

To find k you need to do k=y/x

k=17.50/5

k=3.5

That's the first one. Now you need to make sure its <em>constant</em> with each one so keep going.

k=35/10

k=3.5

k=52.50/15

k=3.5

For all of those 3.5 was constant.

Because they are constant, that means the data in the graph is a proportion.

An example of an unproportional relationship would be if instead of 15 in the last column, it was 16.

k=52.50/16

k=3.28

That be different from the other 3.5's meaning its not proportional. But that's just an example.

If you need extra help reach out to me and I'll help you best I can. I hope this helps though. <3

8 0
3 years ago
Find the Area of RQP
zhannawk [14.2K]

Answer: 25 units squared

Step-by-step explanation:

Draw a line down from p and go right connecting to r. The units there are equal to the ones on the triangle you were given. 5 horizontally and 10 vertically. 5 times 10 is 50 divided by 2

3 0
3 years ago
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