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3 years ago

How to solve a problem using substitution method

Mathematics

1 answer:

nalin [4]3 years ago

6 0

Answer:

there are different types of substitution but the solved question is simultaneous equation using substitution method I only solved one example I hope it helps. It's in the picture above .If you need more examples just chat me up on the comments and I will be glad to solve more for you and also if this is not the substitution you expected ,chat me using the comments slot .

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What is the sum or difference of 5/7 - 1/3

Hatshy [7]

ANSWER: 8/21

Step:
1. Find the GCF (Greatest Common Factor)
The two denominator which is the bottom number have to be the same ALWAYS when adding and subtracting the fraction. So to find the GCF, you keep multiplying until you see the same number, only use the bottom number to find the GCF
7: 7, 14, 21, 28
3: 3, 6, 9, 12, 15, 18, 21, 24, 27
GCF= 21

2. 5/7 -1/3
Multiple both to get 21
5/7 x 3/3 = 15/21
1/3 x 7/7 = 7/21

3. Sove
15/21 - 7/21
= 8/21

7 0

3 years ago

GIVE OUT BRAINLY 2) Kathleen is a sales associate in a jewelry store. She earns $560/wk plus an 8% commission on sales. How much

aev [14]

700<=560+0.08x

x is total sales $

the 560 is the constant weekly pay, since we're only calculating for one week.

we're adding 0.08x to account for the 8% of the total sales

solve it for x:

700-560 <= 0.08x

140 <= 0.08x

1750 <= x

or x >= 1750

meaning she needs $1750 worth of sales that week to earn atleast $700

as for C) just draw a number line with the number 1750 in the middle and the right shaded because it is 1750 or more.

5 0

4 years ago

A number is multiplied by 6 and the result is 48. Find the number.

eduard

Answer:

the answer is 8

Step-by-step explanation:

8x6=48

7 0

3 years ago

Read 2 more answers

Solve 7(3-x)<5x-15 for x

stepan [7]

7(3 - x) < 5x - 15

Distribute 7 inside the parentheses.

21 - 7x < 5x - 15

Subtract 21 from both sides.

-7x < 5x - 36

Subtract 5x from both sides.

-12x < -36

Divide both sides by -12. The equality sign will get flipped because you are dividing by a negative.

x > 3

5 0

3 years ago

Write an equation of the line that has a slope of 5 and y-intercepts 3 in slope-intercept form.

Alika [10]

Y = 5x + 3 YAYA.....

5 0

4 years ago

Read 2 more answers