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andrey2020 [161]
2 years ago
11

Find the value of a²+b when a =-2 and b=5

Mathematics
1 answer:
weeeeeb [17]2 years ago
8 0

Answer:

4+5=9

Step-by-step explanation:

a2+b=9  

Two negatives equal a positive you multiply 2, 2 times because of the power 2.

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Find the value of this expression if x = -4.<br> x2 – 7<br> x + 1
Eduardwww [97]

Answer:

First one equals -15

Second one equals -3

Step-by-step explanation:

(-4)*2 - 7

= (-8) - 7

= (-15)

(-4) + 1

= (-3)

Hopefully this helps.

3 0
3 years ago
Graph the function and find the range
kramer
The answer for the graph would be C. While x is less than or equal to 0, there is the graph of -4x. While x is greater than x, there is the graph of -5 (horizontal line). Furthermore, the closed dot at the end of the -4x represents the less than or EQUAL TO. The dot at the end of the -5 is open because it is only true when x > 0.

The range (y-values where the graph exists) is [-5]∪[0, infinity)
6 0
3 years ago
Mr. Markwood's dog Burke has $1.40 in his doggie
bulgar [2K]

answer:

$6.65

Step-by-step explanation:

He would earn 21 quarters in 3 weeks.

Because there are 7 days in a week: Multiply 7×3=21

21 quaters in dollars is equal to $5.25

So you add $1.40+$5.25=$6.65

3 0
2 years ago
Find the hypotenuse of a right triangle with legs measuring 4 and 5ft
tangare [24]
The hypotenuse would be square root of 41
6 0
3 years ago
Read 2 more answers
What is 128.439 rounded to the nearest tenth??
irga5000 [103]

Answer:

the answer is 128.4

Step-by-step explanation:

To round up a number to the nearest tenth if the hundredth is more than or 5 you add 1 to the tenth but if it less than 5 you remove the other numbers and leave the number like that which will give you 128.4.

6 0
3 years ago
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