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3 years ago

What is 2 and 6/7 times 4/5

Mathematics

1 answer:

bulgar [2K]3 years ago

4 0

Answer:

Step-by-step explanation:

2 6/7 * 4/5....turn ur mixed number into an improper fraction and just multiply

20 / 7 * 4 / 5 = 80/35 which reduces to 16/7 or 2 2/7

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The canteen made 15 liters of soup. By the afternoon they had sold

babunello [35]

Answer:

11.25 liters

Step-by-step explanation:

(3 / 4) * (15 liters)

3 0

3 years ago

I don’t know how to do this

Jet001 [13]

Use proportions because we know that the triangles are similar.

$\frac{20}{28}=\frac{5}{x}$

Cross multiply.

20x=28×5

x=7

answer: 7

6 0

3 years ago

On a scale . 1 inch represent 600 miles . how many miles would 3/4 inch represent?

MrRa [10]

It's a proportion.

$\frac{ \frac{3}{4} }{1} = \frac{x}{600}$

x (1) = 600 (3/4)

x = 450 mi

8 0

4 years ago

Mental math explanation

Allushta [10]

Mental math is something that can be done i your head.

for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math

Hope this helps

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7 0

4 years ago

Read 2 more answers

please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

1 year ago