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svetlana [45]
2 years ago
13

What is the value of x in the following equation?

Mathematics
2 answers:
dsp732 years ago
4 0

4x+8=20

First subtract 8 from both sides

4x+8=20(8-8 and 20-8)

4x=12

Now divide 4 from both sides

4x=12(4x/4 and 12/4)

x=3

So x= 3

Now time to check the equation.

4(3)+8=

Multiply 4 and 3

12+8=20

now add 12 and 8

So the answer is C. 3

nirvana33 [79]2 years ago
3 0
20-8=12
12/4=3
4x3+8=20
Answer is c.
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The length of the hypotenuse of a 30-60 -90 triangle is 14 units. what is the length of the short leg
kifflom [539]

Recall that the short leg is the side opposite the 30 degrees angle. And the ratio of the short leg to the hypotenuse is 1:2.

Let the length of the short leg be x, then,

\cfrac{x}{14}=\cfrac{1}{2}\\ \\\Rightarrow2x=14\\ \\\Rightarrow x=\cfrac{14}{2}=7

6 0
3 years ago
7
natulia [17]

Answer:

diagonal = = 12.8 inches (to the nearest tenth of an inch)

Step-by-step explanation:

As shown in the diagram attached to this solution:

Let the Length of the rectangular board = a

Let the width = b

Let the diagonal = d

where:

a = 10 inches

b = 8 inches

d = ?

Triangle ABC in the diagram is a right-angled triangle, therefore, applying Pythagoras theorem:

(hypotenuse)² = (Adjacent)² + (Opposite)²

d² = 10² + 8²

d² = 100 + 64

d² = 164

∴ d = √(164)

d = 12.806 inches

d = 12.8 inches (to the nearest tenth of an inch)

<em>N:B Rounding off to the nearest tenth of an inch is the same as rounding off to 1 decimal place.</em>

3 0
3 years ago
Can someone help me plzzz multiply 46 bye 78
lorasvet [3.4K]
The answer is 3588 if you multiply 46 x 78 you get 3588
3 0
3 years ago
Pls need help immediately, nd can can u explain it too
tigry1 [53]
The answer is 18...
(3 / 8 ) * 48 = 18
3 0
2 years ago
Read 2 more answers
Can. Anyone help me please
Ulleksa [173]

Answer:

2. 8x=56

divide both sides of the equation by 8

8x divided by 8=56 divided by 8

any expression divided by itself equals 1

x=56 divided by 8

calculate the quotient

x=7

3. 918 divided by 3= 306

4. answer is 5/21

5&6 not sure

7. inches

8. not sure

4 0
2 years ago
Read 2 more answers
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