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Pavlova-9 [17]
2 years ago
14

Maria solved the equation -5 n = -12. Her answer was n = 2. She is fairly confident about her answer, but wants to do a quick ch

eck of her solution using estimation. Which of the following shows a good check of her answer?
Mathematics
1 answer:
777dan777 [17]2 years ago
3 0
Plug in 2 to see if she is correct. Hope this helps!
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Harvey walks 45 feet in 8.5 seconds. What is Harvey's rate in feet per<br> second?
lilavasa [31]

The answer is : 5.29411764706

The answer when rounded:  5.29 or 5.3

I found the answer by simply dividing 45/8.5 - Remember that per means division!

6 0
2 years ago
You are making juice from concentrate. The directions on the packaging say to mix
mel-nik [20]

Answer:

25 can.                            

Step-by-step explanation:

Here is the complete question: You are making juice from concentrate. The directions on the packaging say to mix  1 can of juice with 3 cans of water to make orange juice. How many 12 fluid ounces cans of the concentrate are required to prepare 200 6-ounce servings of orange juice?

Given: Ratio to make juice with concentrate:water is 1:3.

As required we need to prepare 200 6 ounce serving of Orange juice.

∴ 200\times 6= 1200\ ounce

Let there be x ounce of concentrate and 3x ounce of water to make 1200 ounce of orange juice.

Now, x+3x= 1200

∴ x= 300 ounce

Next, lets find out how many cans of 12 ounce is required.

\frac{300}{12} = 25\ cans

∴ 25 cans is required to make 1200 ounce of orange juice.

3 0
3 years ago
Mrs. Patil bought 4 packs of pencils for her class. Then she bought 3 more packs of pencils. There are 12 pencils in a pack. How
Cloud [144]
She bought 4, then she bought 3 more....so she bought 7 packs
each pack contains 12 pencils..

so 7 packs each containing 12 pencils ...
7(12) = 84 total pencils <===
5 0
3 years ago
Read 2 more answers
What is the sum?<br> 8+(-12)<br> О-20<br> 0-4<br> 020
rodikova [14]

Answer: -4

Work: So, to get -4, we need to simplify the equation. If you see any equation with +(- that's subtraction. So, with the rule, this equation is basically 8-12, and that's -4.

7 0
3 years ago
Read 2 more answers
Find inverse of y=1/2x+3
yKpoI14uk [10]

Answer:  f⁻¹(x)=2x-6

Step-by-step explanation:

To find the inverse of an equation, you replace y with x and x with y. Then, you solve for y.

y=1/2x+3          [replace y with x and x with y]

x=1/2y+3          [subtract both sides by 3]

x-3=1/2y           [multiply both sides by 2]

y=2(x-3)            [distribute]

y=2x-6

Now, we know the inverse function is f⁻¹(x)=2x-6.

8 0
3 years ago
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