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vredina [299]
3 years ago
8

How much does this equal?

Mathematics
2 answers:
kari74 [83]3 years ago
7 0
1<span> </span>Set up the long addition.

12+42

2<span> </span>Calculate 2 + 2, which is 4.

12+424
3<span> </span>Calculate 1 + 4, which is 5.

12+4254
4<span> </span>Therefore, 12 + 42 = 54.
<span /><span><span><span><span><span><span>54</span></span><span /></span></span><span /></span><span>

</span></span>
kvv77 [185]3 years ago
6 0
Hey there

Solutions 

12 + 42 
= 54 

CHECK YOUR WORK 
54 - 12 
= 42 

The answer was correct 

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18.7

Step-by-step explanation:

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What two numbers add to 10 and multiply to -24
Morgarella [4.7K]

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12 and -2

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3 years ago
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Solve the triangle. Round your answers to the nearest tenth.
Tresset [83]

Answer:

<B = 47°

<C = 28°

b = AC = 28.0

Step-by-step explanation:

Given:

∆ABC

AB = c = 18

BC = a = 37

<A = 105°

Required:

Length of AC = b

measure of angle B and angle C

SOLUTION:

==>Use the sine rule, sin A/a = sinC/c to find the angle of C:

SinA = sin(105) = 0.9659

a = 37

sinC = ?

c = 18

0.9659/37 = sinC/18

Cross multiply

0.9659*18 = 37*sinC

17.3862 = 37*sinC

Divide both sides by 37

17.3862/37 = sinC

0.4699 = sinC

sinC = 0.4699

C = Sin-¹(0.4699)

C = 28.0° (nearest tenth)

==>Find angle B using sum of angles in a triangle:

Angle B = 180 - (105+28)

Angle B = 180 - 133

Angle B = 47°

==>Find length of b using sine rule, b/sinB = c/sinC:

SinC = sin(28) = 0.4695

SinB = sin(47) = 0.7314

c = 18

b = ?

b/0.7314 = 18/0.4695

Cross multiply

b*0.4695 = 18*0.7314

b*0.4695 = 13.1652

Divide both sides by 0.4695

b = 13.1652/0.4695

b = 28.0 (nearest tenth)

6 0
3 years ago
I need help with this one
PtichkaEL [24]

Answer:

x = 1

Step-by-step explanation:

8x + 4 = 12

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4 0
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Which of the diagrams correctly displays a→+b→=c→, using the parallelogram method?
adoni [48]

Answer:It’s. B

Step-by-step explanation:

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3 years ago
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