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enot [183]
3 years ago
10

Evaluate the expression (-4)^2+12x2

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer:

40

Step-by-step explanation:

step 1:    (-4)^2=16

step2:    12X2=24

step3:     16+24+40

Ps: when you do a  math that involves both addition and multiplication,

we should do multiplication and then addition

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3241004551 [841]

Answer:

133m^2

Step-by-step explanation:

What if i say NO?

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3*3=9

8+3=11

12-3=9

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9*11=99

2 area coverd so far

99+9=108

7*2=14

108+14=122

Lastly the tir

10-7=3

11-3-2=6

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133m^2

8 0
3 years ago
Whats 2.13×0.197 as a decimal
Tcecarenko [31]

Answer:

It's 0.41961.

8 0
3 years ago
Read 2 more answers
Help plz I need help
larisa [96]
triangle area: 19cm×17.5cm÷2=166.25
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4 0
3 years ago
A student believes that less than 50% of students at his college receive financial aid. A random sample of 120 students was take
marusya05 [52]

Answer:

p= 0.9995 and we can conclude that students receiving aid is more than 50% according to the sample results in 2% significance level.

Step-by-step explanation:

H_{0}: less than or equal 50% of students at his college receive financial aid

H_{a}: more than 50% of students receive financial aid.

According to the nul hypothesis we assume a normal distribution with proportion 50%.

z-score of sample proportion can be calculated using the formula:

z=\frac{X-M}{\frac{s}{\sqrt{N} } } where

  • X is the sample proportion (0.65)
  • M is the null hypothesis proportion (0.5)
  • s is the standard deviation of the sample (\sqrt{0.5*(1-0.5)})
  • N is the sample size (120)

then z=\frac{0.65-0.50}{\frac{\sqrt{0.25}}{\sqrt{120} } } ≈ 3,29

thus p= 0.9995 and since p<0.02 (2%), we reject the null hypothesis.

4 0
3 years ago
Which graph represents a function with direct variation?
natka813 [3]

Answer:

<u>Option C</u><u> </u>on edg.

Step-by-step explanation:

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3 years ago
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