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Lady_Fox [76]
3 years ago
15

X=2y-1 solve this equation 3x+y=11

Mathematics
1 answer:
Ugo [173]3 years ago
8 0

Step-by-step explanation:

substitute y into x

3(2y-1)+y=11

6y-3+y=11

add like terms

6y+y-3-11=0

7y-14=0

look for a common factor

7(y-2)=0

y-2=0

therefore y=0 or y=2

find x

if x=2y-1

x=2(0)-1

x=-1

if x=2y-1

x=2(2)-1

x=3

therefore (-1;0) and (3;2)

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Help Please! would really appreciate it.
muminat
<h3>Answer:   x = 9</h3>

=========================================

The diagram shows:

  • base = 13
  • height = x

Recall that the area of a parallelogram is equal to the base times height

area = base*height

We're told that the area is 117 square units, so that means 13x = 117.

Divide both sides by 13 to isolate x

13x = 117

13x/13 = 117/13

x = 9

The height of the parallelogram is 9

Note how:

area = base*height = 13*x = 13*9 = 117

which helps confirm we have the correct height value for x.

8 0
3 years ago
HELP I GOT STUCK!!!!!!
Ivan

Answer:

8.0023 x 10^4

Step-by-step explanation:

To write it you move the decimals, and raise the 0s as exponents


Plz mark as brainliest!


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4 0
3 years ago
I know it’s easy but for me personally I don’t know how to do it.
Stels [109]

Answer:

-1/4 x <u>4</u> = -1

Step-by-step explanation:

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8 0
2 years ago
PLEASE HELP ME!!! 5 POINTS!!!
lakkis [162]

Answer:

D. 1.38

Step-by-step explanation:

To compare numbers, start with the left side.

You are comparing these numbers with 1.32:

A.1.02

B.1.23

C.1.31

D.1.38

Start with the leftmost digit, the 1. All numbers start with 1, so up to the units place, they are all the same. See below.

1.32

A. 1.02

B. 1.23

C. 1.31

D. 1.38

Now compare the next digit which is the tenths place.

1.32

A. 1.02

B. 1.23

C. 1.31

D. 1.38

Above, the number 1.32 has a 3 in the tenths place. 3 is greater than 0 and than 2, so options A and B are less than 1.32 and are eliminated.

1.32

C. 1.31

D. 1.38

Now we compare the digits in the hundredths place shown just above. 2 is greater than 1, but it is less than 8, so we eliminate option C.

Answer: D. 1.38

7 0
4 years ago
8s + 9 = 7s + 6 <br>s= ? ​
denis-greek [22]

Answer:

s = -3

Step-by-step explanation:

8s + 9 = 7s + 6

Subtract 7s from each side

8s-7s + 9 = 7s-7s + 6

s+9 = 6

Subtract 9 from each side

s + 9-9 =   6-9

s = -3  

7 0
3 years ago
Read 2 more answers
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