All categories

3 years ago

The sum of a number and 2 times the number is 21. Find the number.

2 answers:

6 0

To find the number you would start by writing out the equation using x as the number. The equation would be x+2x=21. The first step to solve this equation would be to combine like terms, making the equation 3x=21. Finally, you would divide both sides by three, making your answer x=7.

shutvik [7]3 years ago

5 0

2x + x = 21. Combine your like terms and you get3x = 21. Divide both by sides 3 and you get x = 21.

You might be interested in

Determine if the triangles are similar. If yes, state how (by AA~ SSS~, or SAS~) and complete the similarity statement

NeX [460]

Answer:

Similar by: SAS

∠LMQ = ∠PMK

LM/PM = QM/KM

ΔPKM ~ ΔLQM

7 0

2 years ago

Consider two cars manufactured by Chevrolet in 2014. During 2014, Chevrolet sells one of the two cars to Emily for $20,000. Late

allsm [11]

Answer:

correct option are d. $39,000

Step-by-step explanation:

given data

Chevrolet sells cars to Emily = $20,000

Emily sells the car to Jim = $18,000

second car market value unsold = $19,000

to find out

The transactions just described contribute how much to GDP for 2014

solution

we know here Chevrolet have 2 car

1 car unsold but other car is sold 2 time 1st by Chevrolet sells to Emily then Emily sell to Jim

so here transactions are done = ($2000 + $19000) = $39000

other car is not sell so not transactions by that car

so correct option are d. $39,000

5 0

3 years ago

Gabriel invests money in an account paying a simple interest of 3.7% per year. If he invests $110 and no money will be added or

liubo4ka [24]

$~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$110\\ r=rate\to 3.7\%\to \frac{3.7}{100}\dotfill &0.037\\ t=years\dotfill &1 \end{cases} \\\\\\ A=110[1+(0.037)(1)]\implies A=110(1.037)\implies A=104.07$

3 0

2 years ago

A given line has the equation 10x+2y=-2.

Otrada [13]

Answer:

$5x + y = -1$

Step-by-step explanation:

10x + 2y = –2

-10x - 10x

_______________

2y = -10x - 2

__ _______

2 2

y = -5x - 1

In Standard Form:

y = -5x - 1

+5x +5x

_________

5x + y = -1

I am joyous to assist you anytime.

7 0

3 years ago

Hidemi is a waiter. He waits on a table of 4 whose bill comes to $69.98. If Hidemi receives a 20% tip, approximately how much wi

rusak2 [61]

$14.00 is the answer because you have to multiply $69.98 by 20% and that will give you 13.99 but you round it off and you will get $14.00

3 0

3 years ago

Read 2 more answers