If 5 times + 2=12 then x=?

Mathematics

2 answers:

Lynna [10]3 years ago

8 0

Answer:

I saw an answer for this one and saw it was incorrect

Step-by-step explanation:

5x + 2 = 12

5x = 12 - 2 ( moved the constant to the right )

5x = 10 ( both sided needed to be divided by 5 )

x = 2

tekilochka [14]3 years ago

6 0

Answer:

if 5x+2=12 then x=5

Step-by-step explanation:

5x+2=12

5x=10

10/2

x=5

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Find the surface area of a right triangle prism with legs measuring 3 and 4 and a height of 10.

Hunter-Best [27]

Since we have a rectangle triangle, then we can find the other side of the triangle using the Pythagorean theorem.
We have then:
$L = \sqrt{3^2+4^2}$
$L = \sqrt{9+16}$
$L = \sqrt{25}$
$L = 5$
Then the surface area is given by the sum of the areas.
Triangle of the base and the top:
$A1 = (1/2) * (4) * (3)

A1 = 6$
Rectangle 1:
$A2 = (3) * (10)

A2 = 30$
Rectangle 2:
$A3 = (4) * (10)

A3 = 40$
Rectangle 3:
$A4 = (5) * (10)

A4 = 50$
Finally, the surface area is:
$A = 2A1 + A2 + A3 + A4
$
Substituting values:
$A = 2 * (6) + 30 + 40 + 50

A = 132$
Answer:
The surface area of a right triangle prism is:
B. 132

6 0

3 years ago

WILL CHOSE BRAINLIST HELPPPP!

Katarina [22]

Answer:

138.2°

Step-by-step explanation:

178.2° - 40° = 138.2°

3 0

3 years ago

Read 2 more answers

'Five times a number minus eight is 17.5.