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3 years ago

There are cats playing in the yard. You can see 9 more legs than tail. How many cats is there?

Mathematics

1 answer:

sergeinik [125]3 years ago

3 0

Answer:

3 cats

Step-by-step explanation:

Each cat has 3 more legs than tails, so 3 cats will have 3×3 = 9 more legs than tails.

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For the linear equation, find the product of 5 and the linear equation, and solve both equations for y. 2x + 7y = 11

tensa zangetsu [6.8K]

Answer:

(a) $10x + 35y = 55$

(b) $y = \frac{11 - 2x}{7}$

Step-by-step explanation:

Given

$2x + 7y = 11$

Solving (a): Multiply equation by 5.

Multiply both sides by 5

$5 * (2x + 7y) = 11*5$

Open bracket

$5 * 2x + 5 * 7y = 11*5$

$10x + 35y = 55$

(b) Solve for y in $10x + 35y = 55$ and $2x + 7y = 11$

$10x + 35y = 55$

Subtract 10x from both sides

$35y = 55 - 10x$

Divide both sides by 35

$\frac{35y}{35} = \frac{55 - 10x}{35}$

$y = \frac{55 - 10x}{35}$

Factorize the numerator:

$y = \frac{5(11 - 2x)}{35}$

Express 35 as 7 * 5

$y = \frac{5(11 - 2x)}{7 * 5}$

$y = \frac{(11 - 2x)}{7}$

$y = \frac{11 - 2x}{7}$

When $2x + 7y = 11$ is solved, the solution will be: $y = \frac{11 - 2x}{7}$

6 0

3 years ago

Can someone plz help me? The question is in the pic

mamaluj [8]

Answer:

y=12

Step-by-step explanation:

BC/DF=AC/EF

16/12=y/9

12y=144

y=12

7 0

3 years ago

Could someone pls help me with this math problem?

aleksklad [387]

The person up top is right that should be correct

3 0

3 years ago

What is the factored form of 3x^2 + 23x - 36?

alex41 [277]

The factored form is (3x-4)(x+9)

6 0

4 years ago

Can someone help me with this?

nika2105 [10]

Answer:

I think that answer is D option

3 0

3 years ago