The tens digit of a number is twice the ones digit. The sum of the digits in the number is 12. What is the number?

Answers

Answer 1

Answer: Let x = the ones digit
Let y = the tens digit

x+2y=12
x=2y
x+y=12 substitute x for 2y to get:
(2y)+y=12 add like terms to get:
3y=12
3y=12 divide both sides by 3 to get:
y=4
x+y=12 substitute y for 4 to get:
x+4=12 subtract 4 from both sides to get:
x=8
so if x=ones
and y=tens
then the answer is 48

Answer 2

Answer: Let there be two variables: t and o where t is for ten digit and o is for one digit:

So we have two equations:
t = 2o (1)
t+o = 12 (2)

Subtract (2) from (1) and we get o = 12-2o

Now solve for o:

3o = 12

o = 4

Now plug in (1) or (2) and we have t = 8

Therefore our number is 10t + o = 84

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Put these into y=mx+b format SHOW YOUR WORK!!!! x-7y=7 and 6x-7y=-28

Answers

Answer:

Explanation:

x - 7y = 7
-7y = -x + 7
y = (-1/-7)x + 7/-7
y = (1/7)x - 1

6x - 7y = -28
-7y = -6x - 28
y = (-6/-7)x - 28/-7
y = (6/7)x + 4

x-7y=7
-x -x (isolate the y by subtracting x on both sides)
-7y= -x+7
— ——-
-7 -7 (Isolate the y by dividing both sides by -7)
Answer : y= 1/7x - 1
6x-7y= -28
-6x. -6x
-7y = -6x -28
—— ———-
-7. -7
Answer : y= 6/7x + 4

All the people of a neighborhood pooled together and won the lottery they won 10,000,000 and each person got a 0.02 share. How much money did each person receive?

Answers

Answer:

500000000

Step-by-step explanation:

10000000 ÷ 0.02

tell me which 4 letters are correct! A? B? C? D? E? F? if you get them right i will give you brainliest!!

Answers

Answer:

It is B, D, E, and F.

Step-by-step explanation:

If a = 3 units, b = 7 units, and c = 10 units, what is the volume of the three prisms above?a 210 cubic units
b 153 cubic units
c 180 cubic units
d 162 cubic units

Answers

First prism= 3*3*3= 27 cubic
Second prism= 7*3*3= 63 cubic
Third prism= 10*3*3= 90 cubic
You add all three cubic together 27+63+90 and you get 180 cubic units
So C.180 cubic units is correct answer
Please mark me as ''The Brainliest Answer" please!!!!!!!!!!!

Framingham Company wants to finance its expansion by selling 200,000 shares of stock at $35.20 each. The underwriting commission will be 5.5 percent of the value of the stock. Accounting, legal, and printing fees are $142,985. What is the total selling expense?

Answers

Given:
200,000 shares fo stock at 35.20 each
5.5% underwriting commission
accounting, legal, and printing fees = 142,985

200,000 x 35.20 = 7,040,000
7,040,000 x 5.5% = 387,200

underwriting commission: 387,200
accounting, legal, and printing fees: 142,985
total selling expenses: 530,185

X – 2/7= 3Choose one

A. x= -3 2/7

B.x= -2 5/7

C.x= 2 5/7

D.x= 3 2/7

Answers

Hello

x-2/7=3
==>x=3+2/7
==> x=3 2/7
ANSWER D

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