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2 years ago

Please answer Will give brainlst

Mathematics

1 answer:

Gelneren [198K]2 years ago

4 0

Answer:

A. A gas has formed and left the mixture.

Step-by-step explanation:

A chemical reaction takes place when vinegar and baking soda are mixed. One of the new substances formed is carbon dioxide gas.

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2x - 4y + 7x - 87<br> Helppp

xxTIMURxx [149]

Answer:

9x-4y-87

Step-by-step explanation:

2x-4y+7x-87

9x-4y-87

8 0

3 years ago

Read 2 more answers

Whats the area of this parallelogram?

mart [117]

The formula for a parallelogram is A(area)= b(base) x h(height)
A= 6cm + 5cm
A= 11cm
A= 11cm x 12cm
A= 132cm

So your answer is 132cm.

7 0

3 years ago

There are 2820 cars in Farmington. The ratio of medium size cars to compacts is 7 to 5 and the ratio of compacts to full-size ca

oee [108]

Answer:

Number of full size cars = 900

Step-by-step explanation:

The ratio of medium size cars to compacts is 7 to 5 and the ratio of compacts to full-size cars is 8 to 9. Since compact cars are there in both ratios , we need to make the number in the ratio for compact cars to be the same.

$\frac{medium}{compact} = \frac{7}{5}$

Multiply by 8 on numerator and denominator

$\frac{medium}{compact} = \frac{56}{40}$

$\frac{compact}{full size} = \frac{8}{9}$

Multiply numerator and denominator by 5.

$\frac{compact}{full size} = \frac{40}{45}$

Ratio of medium, compact and full size are in ratio 56,40,45.

Total number of cars =2820.

(56 + 40 + 45)x = 2820

x = $\frac{2820}{141}$

x = 20

Number of full size cars = $20\times 45$ =900

3 0

3 years ago

Students for being surveyed about their favorite colors

KengaRu [80]

Blue and green but i also like black

4 0

3 years ago

Read 2 more answers

For which pairs of functions is (f•g)(x)=x of functions is (f•g)(x)=x

Sonbull [250]

Answer:

Option A

Step-by-step explanation:

The complete question is shown in the attachment.

Note that: $(f\cdot g)(x)=f(x)\cdot g(x)$

We need to multiply all the functions to see which of them satisfy the given criteria.

Option A

$x^2\cdot \frac{1}{x} =\frac{x^2}{x}=x$

Option B

$\frac{2}{x} \cdot \frac{2}{c} =\frac{4}{cx}$

Option C

$\frac{x-2}{3} \cdot 2-3x =\frac{-3x^2+8x-4}{3}$

Option D

$\frac{1}{2x-2} \cdot \frac{1}{2x+2} =\frac{1}{4(x^2-1)}$

The correct choice is A

5 0

3 years ago