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kifflom [539]
3 years ago
10

Evaluate the expression: −(8 − 12) + 60 + (−4)2. A) 13 B) 20 C) 21 D) −11

Mathematics
1 answer:
k0ka [10]3 years ago
5 0

Answer:

56.

Step-by-step explanation:

= -(8-12)+60+(-4)*2

= -(-4)+60+(-4)*2

= 4+60+(-4)*2

= 4+60+-4*2

= 4+60-4*2

= 4+60-8

= 64-8

= 56

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HURRY!!!!!!!!!!!
andrey2020 [161]

Answer:

2.5

Step-by-step explanation:

Conversion a mixed number 2 1/

2

to a improper fraction: 2 1/2 = 2 1/

2

= 2 · 2 + 1/

2

= 4 + 1/

2

= 5/

2

To find new numerator:

a) Multiply the whole number 2 by the denominator 2. Whole number 2 equally 2 * 2/

2

= 4/

2

b) Add the answer from previous step 4 to the numerator 1. New numerator is 4 + 1 = 5

c) Write a previous answer (new numerator 5) over the denominator 2.

Two and one half is five halfs

4 0
2 years ago
Read 2 more answers
A standard dartboard has a diameter of 18 in. What is its area to the nearest square inch?
Reptile [31]
The meaning of the area is the measurement of a surface in this case a circle, which can be find by using the formula A= \pi r^{2}, where r is equal to the radius of the circle.

In this exercise is given that the diameter of a standard cardboard is 18 inches or a radius of 9 inches and it is asked to find its area. Therefore, to find the area of the circle you should substitute the value of the radius into the previous mention formula.

A= \pi r^{2}
A= \pi (9 in)^{2}
A= \pi (81 in^{2})
A=254.47 in^{2}

The area of the standard dartboard is 254.47 square inches or 254 square inches.





8 0
2 years ago
Can someone help with this idk how to do it and pls explain.
V125BC [204]
{35km + x = 140km} {140km - 35km= 105km} so the car traveled 105 kilometers.
6 0
3 years ago
Read 2 more answers
Help please number 19
Vika [28.1K]

Answer:

A.4

Step-by-step explanation:

Median is the middle meaning 6th grade got 4 more hours then the 8th graders

3 0
2 years ago
Read 2 more answers
Which ordered pair is a solution
NikAS [45]

Answer:

B) Only (-3, 5)

Step-by-step explanation:

Slot in the options into the equation

(-2, 4),

Compare with (x, y)

x = -2,  y =4

y =-3x - 4

4 =( -3 * -2 ) - 4

4 = 6 - 4

This is not true hence, option A is wrong

Using (-3, 5)

x = -3, y= 5

5 = (-3*-3) - 4

5 = 9 - 4

This is correct hence, option B is correct

Option c is wrong because (-2,4) is not a solution to the equation

Option D is wrong because option B is correct

3 0
3 years ago
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