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Mazyrski [523]
3 years ago
5

I need to learn about percent, proportion, and mixture word problems

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
4 0

Answer:

Percent:

There are many formulas for percentage problems. You can think of the most basic as X/Y = P x 100. The formulas below are all mathematical variations of this formula.

X and Y are numbers and P is the percentage:

Find P percent of X

Find what percent of X is Y

Find X if P percent of it is Y

Mixture:

Solving a percent mixture problem can be done using the equation Ar = Q, where A is the amount of a solution, r is the percent concentration of a substance in the solution, and Q is the quantity of the substance in the solution.

Proportion:

Many "proportion" word problems can be solved using other methods, so they may be familiar to you. For instance, if you've learned about straight-line equations, then you've learned about the slope of a straight line, and how this slope is sometimes referred to as being "rise over run". But that word "over" gives a hint that, yes, we're talking about a fraction. And this means that "rise over run" can be discussed within the context of proportions.

Step-by-step explanation:

Hope This Helps!

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Conrad had $110 to spend on 9 cheese pizzas for a party. After buying them, he had $8.75 left. How much did each pizza cost? Sho
ololo11 [35]
To solve this, subtract 8.75 from 110, then divide by 9. The answer is 11.25 each pizza. :)
4 0
3 years ago
Maria has eight black marbles, fourteen clear marbles, and twelve blue marbles in a bag. If she picks two marbles at random, wit
horrorfan [7]

Answer:

\boxed{0.15}

Step-by-step explanation:

Part 1: Solve for the total amount of marbles

To solve for the probability of certain events, a population is needed to derive this information from. In order to find this population, add up the amounts of each marble.

8 + 14 + 12 = 34 marbles

Part 2: Determine the probabilities

Now, given the amounts of marbles, simply multiply the ratios of blue marbles to total marbles and the ratio of clear marbles to total marbles to get the combined probability.

\frac{12}{34}*\frac{14}{33} =  \frac{28}{187} \approxeq 0.1497 \approxeq 0.15 * 100 = 15

The probability of these events occurring simultaneously is 15%.

8 0
3 years ago
A 4.3 ounce tomato has about 24 calories. How many calories are in one ounce ?
mafiozo [28]

Answer: approximately 5.5814 calories

==================================

We start off with this ratio

4.3 ounces : 24 calories

Divide both parts of the ratio by 4.3 so that we end up with 1 ounce on the left side

4.3 ounces : 24 calories

4.3/4.3 ounces : 24/4.3 calories

1 ounce : 5.5814 calories

This value is approximate to four decimal places.

7 0
3 years ago
I give branly pls answer
Andre45 [30]

Answer:

y = 37

Step-by-step explanation:

Simplify  

22  +  5 ( 3 ) .

Brainiliest please!

5 0
3 years ago
Read 2 more answers
Approximate cos (12π/ 13) by using a linear approximation with f (x) = cos x.
Katarina [22]
First pick a value of x close to \dfrac{12\pi}{13}. You should be fine with x=\pi.

The linear approximation of f(x) at x=c is given by

f(c)\approx f(a)+f'(a)(c-a)

where x=a is some fixed value close to x=c. You have

f(x)=\cos x\implies f'(x)=-\sin x

so

f\left(\dfrac{12\pi}{13}\right)\approx f(\pi)+f'(\pi)\left(\dfrac{12\pi}{13}-\pi\right)
\cos\dfrac{12\pi}{13}\approx\cos\pi-\sin(\pi)\left(-\dfrac\pi{13}\right)
\cos\dfrac{12\pi}{13}\approx-1

The actual value is closer to -0.9709, so the approximation is decent.
4 0
3 years ago
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