All categories

4 years ago

What is the solution to the equation 3(2x + 5) = 3x + 4x? a x = 4 b x = 5 c x = 15 d x = 0

Mathematics

1 answer:

Arte-miy333 [17]4 years ago

4 0

Answer:

x= 15 so the c) is right

Step-by-step explanation:

We can do it like:

3(2x + 5) = 3x + 4x

or 6x + 15 = 7x

-6x+ 6x +15 = -6x+ 7x

or 15 = x

The solution is 15

Hope you understand it.

You might be interested in

Simplify the expression

cestrela7 [59]

It would come out as 1

7 0

3 years ago

What is the value of x in the number 5/3+ 3x+4=8

amm1812

5/3+3x+4= 8
= 3x= 4-5/3
= 3x= 7/3
= x= 7/9

4 0

3 years ago

If I have a garden that's ten yards and I want to plant a plant that requires 2 yards how many plants can I plant

Damm [24]

Pretty sure it's 5. 5X2=10. Sooo

6 0

3 years ago

When the smaller of two consecutive integers is added to two times the larger, the result is 26. find the integers?

Mashutka [201]

(X)+2(x+1)=26
3x=24
X=8

Y=x+1
Y=8+1
Y=9
The two numbers are 8 and 9

8 0

4 years ago

Please help ! This is 7th grade math and I’ve been stuck on this question for 30 minutes!

FinnZ [79.3K]

$\dfrac{1}{22}\:\dfrac{\text{in}}{\text{hr}}$

Step-by-step explanation:

The amount of time from 10pm to 7am is 9 hours. However, the time indicated is 7:10am. Since there are 60 minutes in an hour, 10 min is equal to 1/6 of an hour. Therefore, the total time that the water level of the pool decreased is $9\frac{1}{6}$ hours or $\frac{55}{6}$ hours. To find the rate at which the water level decreased, we divide the change in the water (in inches) by the time it took to reach that level. So we write

rate of change $= \dfrac{\text{change\:in\:height}}{\text{change\:in\:time}}$

$\:\:\:\:\:\:\:= \dfrac{\frac{5}{12}\:\text{in}}{\frac{55}{6}\:\text{hrs}}$

$\:\:\:\:\:\:\:=\dfrac{5}{12}\cdot\dfrac{6}{55}\:\dfrac{\text{in}}{\text{hr}}$

$\:\:\:\:\:\:\:= \frac{1}{22}\:\dfrac{\text{in}}{\text{hr}}$

7 0

3 years ago