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Whitepunk [10]
1 year ago
6

646 is 85% of what number?

Mathematics
1 answer:
Lilit [14]1 year ago
8 0

Let the number be y

The statement can be interpreted as

85% of y = 646

\begin{gathered} \text{ }\frac{85}{100}\text{ x  y = 646} \\ 85y\text{ = 64600} \\ y=\frac{64600}{85} \\ y=760 \\ \text{  The number is 760} \end{gathered}

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adam prepares a meal of shrimp and brown rice. it must contain exactly 6 g of fat and 10 mg of iron. each 5oz serving of shrimp
jasenka [17]

Answer:

Adam needs 9/8 of a 5oz serving of shrimps (which equals to 5.625 oz) and 5/8 of a cup of brown rice (which is around 10 tablespoons).


Explanation:

You are given:

every serving of shrimp contains 2g of fat and 5mg of iron;

every serving of rice contains 6g of fat and 7mg of iron;

each meal should have 6g of total fat and 10mg of total iron.


You need to set a system of equation: let's call

s = quantity of shrimps

r = quantity of rice

The equation for the total fat will be: the quantity of fat in the serving of shrimps plus the quantity of fat in the serving of rice must be equal to 6g

2s + 6r = 6    (1)

Similarily:

the quantity of iron in the serving of shrimps plus the quantity of iron in the serving of rice must be equal to 10g

5s + 7r = 10     (2)


In order to solve the system, solve for s in equation (1):

s = (6-6r)/2 = 3 - 3r        (3)

Substitute in equation (2):

5(3 - 3r) + 7r = 10

and solve for r:

15 - 15r + 7r = 10

8r = 5

r = 5/8

Substitute the value of r in equation (3):

s = 3 - 3×5/8 = 9/8


Therefore Adam would need 9/8 of a 5oz serving of shrimps and 5/8 of a 1 cup of brown rice for each meal.

6 0
3 years ago
Potato cause 0.32 per pound how much does 0.75 pounds of sweet potatoes cost
Semmy [17]
Answer: .24


You get this by multiplying .75 by .32 or by dividing .32 by four and multiplying by 3
5 0
3 years ago
If x + 10 = 70, what is x?
seropon [69]

Answer:

C. 60

Step-by-step explanation:

x + 10 = 70

Subtract 10 from both sides

x + 10 - 10 = 70 -10

Simplifying

x = 60

7 0
4 years ago
Read 2 more answers
Someone help ! It’s talking about Integers !!
nataly862011 [7]

Step-by-step explanation:

  1. The numbers to the <u>right</u> of 0 are <u>positive</u>. The numbers to the <u>left</u> of 0 are <u>negative</u><u>.</u> 0 is neither positive nor negative.
6 0
3 years ago
Read 2 more answers
Question 10
EleoNora [17]

Answer:

a.(-b) ( third choice)

explanation:

-a+b - there is no plus sign for -a.b.

not -a+b

(-a)(-6)=6a (-negative sign and -negative sign=+positive sign)

5 0
4 years ago
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