MATHEMATICS HIGH SCHOOL

4X + 5Y = 21
-4X + 8Y = -8
And
X + 5Y = 5
3X - 5Y = 3

Answers

Answer 1

Answer:

Answer:

for the first one

Step-by-step explanation:

(x,y)=(4,1)

Related Questions

PLS HELP ASAP Consider a standard deck of 52 playing cards with 4 suits. If A is the event of drawing a 6 from the deck, and B is the event of drawing a black playing card from the deck, what is the intersection of A and B? (Remember that the black cards are spades and clubs.) A) drawing a 6, a club, or a spade B) drawing the 6 of hearts or the 6 of diamonds C) drawing a 6, a heart, or a diamond D) drawing the 6 of clubs or the 6 of spades
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What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.

Please helps I’ll give you brainiest!:)

Answers

x: 13.8924439894498

y: 6

the answer is x= 15 because the ratio of the sides is 8/10 = 12/x then you cross multiply and divide and get 15 as x

Whosever answers first gets marked brainliest!

Answers

Answer:

Step-by-step explanation:

$5.85 / 13 cans = $0.45/can

$9.45 / 21 cans = $0.45/can

13 cans for $5.85 = 21 cans for $9.45

The ratios are equal.

Please, help me I’m so dumb

Answers

Answer:

Step-by-step explanation:

You know that 9 = 10 - 1.

Then 9 of something is equal to 10 of it less one of it. Here, that "something" is four.

$\begin{array}{cl}9*4&=10\text{ fours}-\boxed{1}\text{ four}\n&=\boxed{40}-4\n&=\boxed{36}\end{array}$

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Comment on this math

This illustrates a shortcut for multiplying by 9 that can be convenient for mental arithmetic. The idea is to multiply by 10, which just involves adding 0 (or moving the decimal point), then subtract the original number.

Bill makes leather shoes. He charges $45 for a pair of women's shoes and $50 for a pair of men's shoes. He sells x pairs of women’s shoes and y pairs of men’s shoes each week and earns a total income of $2,500. This situation can be represented by the equation . If Bill has no female customers during a particular week, he needs to sell pairs of men’s shoes to earn his weekly income of $2,500.

Answers

Hello,

Let's
x pairs of women’s shoes sold
y pairs of men’s shoes sold
R(x,y)=45*x+50y=2500 (each week)

Or the week, =0 =>50*y=2500=>y=500.

Clyde made a model of his favorite type of car. his model is 6 inches long, and the actual length of the car is 15 feet. what ratio represents the length of his model to the actual length of the car?