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Ksju [112]
3 years ago
14

What is -4+9 and 7+(-8)3. -4+94. 7+(-8)5.-2+1

Mathematics
2 answers:
notsponge [240]3 years ago
8 0

5

-1

-1

these are the answers

Orlov [11]3 years ago
6 0
-4+9= 5

7+(-8)= -1

-2+1= -1
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insens350 [35]

Simplified expression is 11y² + 6x - 13

Step-by-step explanation:

  • Step 1: Simplify 5y² + 3y - 13 + 6x - 3y + 6y²

5y² + 3y - 13 + 6x - 3y + 6y² = 11y² + 6x - 13

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Which of the following show an element of the sample space for first rolling a die and then tossing a coin?
Sphinxa [80]
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3 years ago
In a talent show of singing and comedy acts, singing acts are 4.5 minutes long and comedy acts are 3.5 minutes long. The show ha
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Step-by-step explanation:

Let the number of singing act be x

Let the number of comedy act be y

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x+y = 14..... 1

If singing acts are 4.5 minutes long and comedy acts are 3.5 minutes long and the acts lasts 59 minutes, then:

4.5x + 3.5y = 59 .......... 2

Solve both equation simultaneously for x and y

x+y = 14

45x+35y = 590

.................................

x+y = 14......... *9

9x+7y = 118....... 1

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y = 8/2

y = 4

Substitute y = 4 into equation 1;

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7 0
3 years ago
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Jet001 [13]

Answer:

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Given

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8 0
3 years ago
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Serga [27]

Answer:

Step-by-step explanation:

\frac{k^8+8k^2+10k+21}{k+7} is already simplified.

5 0
2 years ago
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