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krok68 [10]
2 years ago
13

Find the sum: The blanks r subtraction signs

Mathematics
1 answer:
Evgen [1.6K]2 years ago
6 0

Answer:

8x^2+6x-17

Step-by-step explanation:

All that we have to do is add the 3 and 5 so it's basically like combining like terms. So the first blank is 8.

Now we add the x and the 5x which is 6x, all we're doing is adding the x's.

Now we do add the two negative 10 and 7. So what is -10 + - 7 we add them normally but we'll still have the negative in front of them. So it's -17.

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What is an equivalent expression to 3p+12m+8 ?
IRINA_888 [86]

Answer:

The equivalent expression to  3p+ 12 m + 8 are

1. 3p+ 12 m + 8

= 3 × p + 3 × 4× m + 4 ×2

 = 3 (p + 4 m) + 8 → Using inverse of distributive property: a × b + a × c= a×(b+c)

2. 3p+ 12 m + 8

=3 × p + 3 × 4×m + 4 ×2

=  3 p  + 4 (3 m + 2)→ Using inverse of distributive property: a × b + a × c= a×(b+c)




3 0
3 years ago
Read 2 more answers
PLEASE HELP WILL MARK BRAINLIEST !!!!!!! 28 pts
anyanavicka [17]

Answer:

It costs $34 to buy a box of 64 markers.

Step-by-step explanation:

Check whether we are working with a direct proportion, in which case the comparison between the price and the number of markers would be the same.

$ 14  ÷  24  =  $0.58   and   $ 7 ÷  10  =  $ 0.70

The prices differ, so they are not directly proportional.

The reason is that both prices include the price of the box, which is the same. This can be thought of as the constant.

If you were to draw a graph of price (on the  y -axis) and number of markers (on the  x -axis) you would get a straight line where the  

y -intercept would be the price of the box and the slope would be the price of a marker. (rate of change of price)

Let's find the slope.

m = (y _2 − y _1 /x _2 − x _1)

m  =  ($14 −$ 7 /24− 10)  =  ($ 7 /14  markers)  =  $ 0.50 / marker

Therefore each marker costs  

$ 0.50  or  50 c

the price of  64  markers is:

64  ×  0.5 =  $ 32.00  ←  this is just the markers,

How much does the box cost? Consider  

$ 7  for  10  markers at  $ 0.50  each

$ 7  −  10  ×  $ 0.50  =  $ 7 −  $ 5  =  $ 2

The box itself costs  $2

The total cost of  64 markers in a box would be:

$ 2  +  $ 32 =  34#

8 0
3 years ago
Read 2 more answers
I will give brainlist for correct answer.
Ksivusya [100]

Answer:

1 1/2

Step-by-step explanation:

4/5. 1/4.

16/20. 5/20 21/20

8 0
3 years ago
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А 1 cm<br> B. 5 cm<br> C. 11 cm<br> D. 25 cm
krok68 [10]

5 is the answer

here we have hypoteaus and base

so by using pythagoreaus theorem

p^2 = h^2 - b^2

p^2 = 13^2 - 12^2

p^2 = 169 - 144

p^2 = 25

p = root under 25

<em><u>p = 5</u></em>

3 0
3 years ago
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Find the percent of each number. 0.9 of 1000 =
Serggg [28]

Answer:

9

Step-by-step explanation:

3 0
3 years ago
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