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3 years ago

Simplify: 12 + (-38) + 27

Mathematics

2 answers:

DedPeter [7]3 years ago

6 0

Answer:

12+(-38)+27= 1

Step-by-step explanation:

When a positive is multiplied by a negative, the sign becomes negative. Therefore, 12+(-38) becomes 12-38. So 12-38+27= 1.

BlackZzzverrR [31]3 years ago

5 0

Answer:

Step-by-step explanation:

For this problem, the negative sign on the 38 stays. You can remove the parentheses and addition sign and subtract 38 from 12.

12 + (-38) + 27

12 - 38 + 27

-26 + 27

If the problem was (12 - (-38), than the negatives would cancel out and form (12 + 38).

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Answer : A

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3 years ago

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3 years ago

4. Line t and AECA and AFDB are shown on the coordinate plane

julia-pushkina [17]

Answer:

A, B, C, E

Step-by-step explanation:

It can be seen from the figure that the points A, B, C and D, all are lying in the line t.

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3 years ago

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A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20° above the horizontal. How far does the ju

weeeeeb [17]

Answer:

x = 9.5 m

Step-by-step explanation:

Given:

This problem is based on 2D motion kinematics equations:

$V_0 = 12 m/s$

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$V_y = 0$

Components of initial velocity:

$V_0x = V_0 cos (\theta) =(12 )(cos (20^0)) = 11.3 m/s$

$V_0x = V_0 sin (\theta) = (12)(sin (20^0)) = 4.10 m/s$

To find time to reach maximum height:

$V_y = V_0y -gt$

Plugging in the known values:

0 = 4.10 - 9.8t

$t = \frac{-4.10}{-9.8}$

$t = 0.418 s$

Total time = 2t = 2(0.418) = 0.836 s

to find horizontal distance covered:

$x = (V_0x)(t)\\x = (11.3)(0.836)\\x = 9.5 m$

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3 years ago

Which represents the value of What is the length of line segment DG?

Natalka [10]

Answer

12 units

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This can be solved using the properties of a circle.

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4 years ago

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