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astra-53 [7]
3 years ago
10

What is the value of the expression below when w = 3? 8w - 9

Mathematics
2 answers:
bonufazy [111]3 years ago
6 0
8(3) - 9, you multiply 8 by 3 which equals 24, then you subtract 9 from 24 and end up with 15.
Vesna [10]3 years ago
4 0

Answer:23

Step-by-step explanation:

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Arrange the systems of equations that have a single solution in Increasing order of the x-values in their solutions.
NemiM [27]

Complete question is;

Arrange the systems of equations that have a single solution in Increasing order of the x-values in their solutions.

1) 2x + y = 10

x - 3y = -2

2) x + 2y = 5

2x + y = 4

3) x + 3y = 5

6x - y = 11

4) 2x + y = 10

-6x - 3y = -2

Answer:

Arranging the systems in increasing value of x gives;

System 2, system 3, system 1

Step-by-step explanation:

1) 2x + y = 10 - - - (eq 1)

x - 3y = -2 - - - (eq 2)

Multiply eq 1 by 3 to get;

6x + 3y = 30

Add it to eq 2 to get;

7x = 28

x = 28/7

x = 4

2) x + 2y = 5 - - - (eq 1)

2x + y = 4 - - - (eq 2)

Multiply eq 2 by 2 to get;

4x + 2y = 8

Subtract eq 1 from it to get;

3x = 3

x = 3/3

x = 1

3) x + 3y = 5 - - - (eq 1)

6x - y = 11 - - - (eq 2)

Multiply eq 2 by 3 to get;

18x - 3y = 33

Add to eq(1) to get;

19x = 38

x = 38/19

x = 2

4) 2x + y = 10 - - - (eq 1)

-6x - 3y = -2 - - - (eq 2)

Make y the subject in eq 1 to get;

y = 10 - 2x

Put in eq (2);

-6x - 3(10 - 2x) = -2

-6x - 30 + 6x = -2

0 = 0

Thus,no solution exists.

Arranging the systems in increasing value of x gives;

System 2, system 3, system 1

3 0
3 years ago
Matt bought some boards to build a wooden deck. Some of the boards were 4 ft long and some of the boards were 5 ft long. He boug
Kazeer [188]

Answer:

8 boards.

Step-by-step explanation:

Since he bought a few of each length. The only combination that works is when he bought 5 of the 4 ft long board so 4×5=20. Than he bought 3 of the 5ft boards 3×5=15. 20+15=35 ft worth of boards.

4 0
3 years ago
Read 2 more answers
I need help ASAP with this
igor_vitrenko [27]

Answer:

2ITR/KVJFCIUYBDTR67E4VHJN, BHJYUG76T89O;LXCS,DVTI9R0OPE;'

Step-by-step explanation:


8 0
3 years ago
If -<br> 3- 12, what is the value of x?<br> 4<br> 00<br> O 18<br> 0 24
malfutka [58]

Answer:

8

Step-by-step explanation:

\frac{2}{3} = \frac{x}{12}

We make the denominator the same by multiplying \frac{2}{3} by 4.

\frac{8}{12} = \frac{x}{12}

Thus, x = 8.

6 0
3 years ago
18 divided by 3 x 2 +(4 divided by 2 +1)
Maslowich

Answer:

9

Step-by-step explanation:

18÷3=6

6×2=12

12+4=16

16÷2=8

8+1=9

7 0
3 years ago
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