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Amiraneli [1.4K]
3 years ago
8

13a+9+9b+12a-7b Combine like terms for each expression

Mathematics
2 answers:
zhuklara [117]3 years ago
8 0

Answer:

25a +2b + 9

Step-by-step explanation:

first you can add all the the a together then the b then the normal numbers.

Lana71 [14]3 years ago
6 0

Answer:

 13a9 + 12a + 2b

Have a nice day!

(this answer is wrong, please do not use)

Step-by-step explanation:

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376 ×74 explain the solving steps​
LuckyWell [14K]

Answer:

376*74=

Step-by-step explanation:

376 \times 74 = 27824  \\

8 0
3 years ago
Combine the like terms to create an equivalent expression:<br> \large{5n+6+(-7n)}5n+6+(−7n)
forsale [732]

Answer:−2n+6,−2n+6

Step-by-step explanation:

5n+6−7n,5n+6−7n

((5n−7n)+6),((5n−7n)+6)

−2n+6,5n−7n+6

−2n+6,((5n−7n)+6)

−2n+6,−2n+6

7 0
3 years ago
Tony has saved dimes and quarters in his piggy bank he has saved a total of four dollars and has 25 coins how many dimes does he
k0ka [10]

Answer:

  • 15 dimes
  • 10 quarters

Step-by-step explanation:

Let q represent the number of quarters. Then Tony's coin value is ...

  0.25q +0.10(25 -q) = 4.00

  0.15q +2.50 = 4.00 . . . . . . . . eliminate parentheses, collect terms

  0.15q = 1.50 . . . . . . . . . . . . . . subtract 2.50

  q = 10 . . . . . . . . . . . . . . . . . . . . divide by the coefficient of q

Then the number of dimes is ...

  25 -10 = 15

Tony has 15 dimes and 10 quarters.

5 0
3 years ago
Look at image worth 20 pointd help!!
Alecsey [184]

Answer:

y=-\frac{9}{7}x-2

Step-by-step explanation:

Here, we have to convert the equation to slope-intercept form so we can find the perpendicular slope:

7x-9y=-5

-9y=-5-7x

y=-\frac{5}{9}+\frac{7}{9}x

y=\frac{7}{9}x-\frac{5}{9}

Since our slope is m=\frac{7}{9}, then that means the slope perpendicular to it is m=-\frac{9}{7}.

Now we find our new y-intercept so that the line will pass through the point (-7,7):

y=mx+b

y=-\frac{9}{7}+b

7=-\frac{9}{7}(-7)+b

7=9+b

-2=b

Therefore, the equation of the new line is y=-\frac{9}{7}x-2

7 0
3 years ago
A regular triangular pyramid is 2 feet tall, 2 feet wide and 2 feet long. What is the pyramid’s surface area?
harina [27]

Answer:

12

Step-by-step explanation:

7 0
3 years ago
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