All categories

2 years ago

Can some on help me on this question?

Mathematics

2 answers:

mario62 [17]2 years ago

6 0

Answer:

x=10 and x-7 is the answer

Step-by-step explanation:

a)2x-7=13

2x=13+7

2x=20

x=20/2

x=10

b)3x+4=25

3x=25-4

3x=21

x=21/3

x=7

i hope it will help you

denpristay [2]2 years ago

5 0

Answer:

a) $x=10$

b) $x=7$

Step-by-step explanation:

2x-7=13

Add 7 to both sides

2x=20

Divide both sides by 2

x=10

3x+4=25

Subtract 4 from both sides

3x=21

Divide both sides by 3

x=7

You might be interested in

Find area of triangle whose base is 2 √3 and height is 3 √3

Lera25 [3.4K]

Area of a triangle = base times height
A = 2√3 times 3√3
A = 18
The answer is 18
Hope that helps

7 0

2 years ago

The even integers greater than or equal to 16

seraphim [82]

Best you can do is describe a set:

John

4 0

2 years ago

What is value of x? Enter your answer in the box.

marin [14]

Answer:

$x \ = \ 10$

Step-by-step explanation:

Let point $D$ be the point where the straight line drawn from point $A$ meets the straight line $BC$ , it is evident that $\triangle ABD$ and $\triangle ACD$ is similar given that both triangles share the same angle, $\angle BAD \ = \ \angle DAC$ . Hence, the ratio of the sides of each triangle is the same. Specifically,

$\displaystyle{\frac{x+4}{8} \ = \ \frac{2x+1}{12}}$ .

Performing cross multiplication yields

$12\left(x+4\right) \ = \ 8\left(2x+1\right) \\ \\ \rule{0.15cm}{0cm}12x+48 \ = \ 16x+8 \\ \\ \rule{1.1cm}{0cm} 4x \ = \ 40 \\ \\ \rule{1.3cm}{0cm} x \ = \ 10$ .