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mina [271]
4 years ago
14

Which set or sets does the number -21 belong to

Mathematics
2 answers:
omeli [17]4 years ago
8 0
Inerger rational and real
evablogger [386]4 years ago
4 0

it is a negative number


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Look at the image. Could someone please help me out? Only question B Thank you! WILL GIVE BRAINLYEST​
Sliva [168]

Answer:

y = 3

Step-by-step explanation:

2x+6y=5x+4y   if x=2

2(2)+6y=5(2)+4y

4+6y=10+4y

-4     =-4

6y=6+4y

-4y=   -4y

2y=6

/2=/2

y=3

5 0
3 years ago
Ron walked 8/10 mile from his grandmothers house to the store. Then he walked 9/10 mile to his house. Use benchmarks to estimate
RUDIKE [14]

Answer:

1 7/10 miles

Step-by-step explanation:

7 0
3 years ago
Gracie is building a square sandbox with sides 2 feet long. She wants to put sand 1.55 feet deep in the box. How much sand shoul
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2*2*1.55=6.2 cubic feet of sand
6 0
3 years ago
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Anne and maria play tennis almost every weekend so far anne has won 12 out of 20 matches how many matches will anne have to win
LenaWriter [7]
12 more games.
The current winning percentage is 60%, which is found by dividing 12 by 20 and multiplying by 100 (12 / 20 = 0.60, 0.60 x 100 = 60).

To get a winning streak of 75%, Anne has to win 12 more games in a row. That will mean she will have won 24 out of a total of 32 matches, and this decimal is equal to 0.75. Multiply by 100 to get the percentage of 75%.
5 0
4 years ago
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Let f(x)=x3+9x2−81x+14. (a) Use the definition of a derivative or the derivative rules to find g
Sergeu [11.5K]

Answer:

g=6x+18

Step-by-step explanation:

From the question we are told that:

Function

 f(x)=x^3+9x^2−81x+14

Generally 1st derivative f'(x) of Fuction f(x) is

 f'(x)=3x^2+2*9(x)-81

 f'(x)=3x^2+18(x)-81

Generally 2nd derivative f''(x) of Fuction f(x) is

Where

 f''(x)=g

Therefore

 g=3x^2+18(x)-81

 g=2*3x^1+18

 g=6x+18

6 0
3 years ago
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