3 years ago

HELP ASAP!!!!! 20PTS!!

Mathematics

1 answer:

allsm [11]3 years ago

4 0

Answer:

the answer is 80!!!!!!!!!!

Step-by-step explanation:

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Evaluate x² + 4x + 1 when x = -3

Masteriza [31]

Substitute -3 to x

(-3)^2 + 4(-3) + 1

9 - 12 + 1

= -2

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2 years ago

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1.here are some decimal numbers. 5.012 |0.66 | 19.8 | 123.01 | 2.39 | 23.1 write down all numbers that have two decimal places

ziro4ka [17]

Answer:

0.66, 2.39

Step-by-step explanation:

two decimal places look like this. Ex: (4.74)

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3 years ago

What is the answer to 5+5(x+4)≤20?

Nata [24]

$5+5\left( x+4 \right) \le 20\\ \\ 5\left\{ 1+\left( x+4 \right) \right\} \le 20\\ \\ \frac { 1 }{ 5 } \cdot 5\left\{ 1+\left( x+4 \right) \right\} \le 20\cdot \frac { 1 }{ 5 }$

$\ \\ 1+\left( x+4 \right) \le 4\\ \\ 1+x+4\le 4\\ \\ x+5\le 4\\ \\ x\le 4-5\\ \\ x\le -1$

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4 years ago

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a pet store has 7 cats here are their weights 12, 12, 9, 16, 11, 11, 9 find the mean weighy of these cats

shusha [124]

Answer:

The mean weight of the cats is 11.42 (rounded)

Step-by-step explanation:

To find the mean, you add up all the weights (12, 12, 9, 9, 11, 11, 16) and then divided the sum (80) of the weights by the number of cats (7)

12+12+9+9+11+11+16= 80

80 ÷ 7= 11.42857143 (I rounded my answer to 11.42)

I hope this was helpful. Have a wonderfull rest of your day!