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HACTEHA [7]
3 years ago
12

Evaluate each expression when a = -4 and b = 31.) ab2.) 2a + 3b 2.) 2(a - b)​

Mathematics
1 answer:
Svet_ta [14]3 years ago
3 0

1) -12

ab is a times b. We plug in the numbers (-4)*(3) which equals -12.

2) 1

We plug in -4 for a, and 3 for b into the equation.

We get 2(-4) + 3(3)

2*-4 is -8. 3*3 is 9. We add them both, and -8+9 equals 1.

3) -14

We plug in -4 for a, and 3 for b into the equation.

2(-4-3)

-4-3 is -7. -7*2 equals -14.

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3 years ago
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xxTIMURxx [149]

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-4 ..... 1.5

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7 0
2 years ago
What is the difference between 5 and -5
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6 0
2 years ago
Brain bought 2 shirts for 14.50 each and a pair of shoes for 29.99 the sales tax was 6%
Sedbober [7]
Cost of each shirt bought by Brain = 14.50
Then
Cost of 2 shirts bought by Brain = 2 * 14.50
                                                    = 29
Cost of a pair of shoes = 29.99
Total amount spent by Brain before tax = 29 + 29.99
                                                               = 58.99
Percentage of sales tax that needs to be paid = 6%
Amount of sales tax that needs to be [paid = (6/100) * 58.99
                                                                     = 353.94/100
                                                                     = 3.54
So
the total amount spent by Brain including tax = 58.99 + 3.54
                                                                         = 62.53
I hope this is the answer you were looking for.
6 0
3 years ago
Read 2 more answers
I need help very bad please. You guys can do any questions just tell me the number
Andrews [41]
Question 10: P=28cm

if l=8 and w=6

Then (8+6)=14
2(14) so 14x2 = 28
So therefore P=28cm
6 0
3 years ago
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