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4 years ago

Solve for x and y: 3x + 7y= 22 123 + 28y = 88

Mathematics

1 answer:

ale4655 [162]4 years ago

5 0

Answer:

Step-by-step explanation:

1. Since this is a equation we know we have to get the variables to one side and the constants/rational numbers to the other. So you take 7y and you add -7y. You do that to the other side which will give you -4y=22. Since we cant have a negative variable, you flip the y to positive and flip the constant to negative leaving you 4y=-22. Then you distribute y leaving you y=-5.5

2.since we know the constants must be on 1 side of the equal sign, we subtract 123 on both sides, leaving us with 28y=-35. Distribute y and you get y=-0.8

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Kruka [31]

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3 years ago

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dusya [7]

Answer:

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Step-by-step explanation:

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3 years ago

A couch and coffee table cost a total of $1017 . The cost of the couch is two times the cost of the coffee table. Find the cost

Solnce55 [7]

Answer:

The couch costs $678 and $339 for the coffee.

Step-by-step explanation:

In total you spent $1017 and it was used in 3 portions, 2 for the couch, and 1 for the coffee. First divide it and find out how much each portion costs. In this case (1017 divided by 3) the answer will be 339. Now since you spent 2 of the 3 portions on the couch multiply one portion by 2. Then you get 678 for 2 portions, hence telling us that the couch costed, $678. With the remaining one portion of 339, you already know coffee costs $339. Please give me brainliest, I am new to answering questions. Thanks!

6 0

3 years ago

Help please !!

svet-max [94.6K]

Answer:

$MH=27$

Step-by-step explanation:

Since the two triangles are similar;

$\frac{MH}{KP}=\frac{IH}{LK}$

This implies that;

$\frac{MH}{18}=\frac{36}{24}$

Multiply both sides by 18

$\Rightarrow MH=\frac{36}{24}\times 18$

$\Rightarrow MH=27$

7 0

3 years ago

Read 2 more answers

22 Your answer is INCORRECT In triangle ABC, an exterior ange at C measures 120 and mLA = 70. which is the shortest side or the

Snezhnost [94]

Answer:

b) AC

Step-by-step explanation:

Exterior angle C is the sum of interior angles A and B. If angle A is 70, then angle B is 120-70 = 50. Angle C is the supplement of its exterior angle, so is 180-120 = 60.

The smallest angle is B, so the opposite side, AC, is the shortest side.

8 0

3 years ago