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3 years ago

13

Explain how to use the pattern in the table to rewrite a division problem involving fractions as a multiplication problem.

1 answer:

Ostrovityanka [42]3 years ago

7 0

Dividing fractions is also the multiplication of the reciprocal. This means that you flip the second fraction in the division problem so that it is the reverse of what it was.

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To sew a pair of jeans, 630 feet of thread is needed. Unfortunately the fabric store only sells thread in yards. How many yards

inna [77]

Answer:

210

Step-by-step explanation

One yard is equal to 3 feet so the simplest way is to divide the number of feet by 3 and that will give you your answer.

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2 years ago

This year, a small business had a total revenue of $40,700. If this is 26% less than their total revenue the previous year, what

Virty [35]

26% less than a value is best found by multiplying by (100 - 26)% = 74% = 0.74
So previous year x 0.74 = 40,700
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2 years ago

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3 years ago

The staff dietician at the California Institute of Trigonometry has to make up a meal with 600 calories, 20 grams of protein, an

Arlecino [84]

Answer:

The amount of rubbery jello=5.038 ounce

Dried fish stick = 4.886 ounce

Mystery meat = 1.526 ounce.

Step-by-step explanation:

Solutions/Explanation: (a) Suppose the amount of rubbery jello = $x$ ounce,

The dried fish sticks amount to be = $y$ ounce

The amount of mystery meat = ounce.

Specification of the ingredients

Rubbery jello has: Calories=10 Cal/ounce, Protien=1 gram/ounce, Vitamin C= 30 mg/ounce

Dried fish sticks: Calories=50 Cal/ounce, Protien=3 grams/ounce, Vitamin C=10 mg/ounce

Mystery meat: Calories=200 Cal/ounce, Protien=0.2 gram/ounce, Vitamin C=0 mg/ounce,

Now,

Total calories = $600$ .

Thus,

$10x+50y+200z=600\quad\Idot (1)$

The, total Protien = $20 g$ .

Thus,

$x+3y+0.2z=20 \quad\Idot (2)$

also, total Vitamin C = .

Thus,

$30x+10y+0z=200 \quad\Idot (3)$

Therefore,

1, 2 and 3 are the mathematical models of the dietician's problem with a system of three linear equations.

(b) Now, we know three equations:

$10x+50y+200z=600$

OR

$x+5y+20=60 \quad\Idot (4)$

From eqn 2,

$x+3y+0.2z=20 \quad\Idot (5)$

From eqn 3.

$30x+10y=200$

OR

$3x+y=20 \quad\Idot (6)$

On solving the eqn 4, 5 and 6 for $x, y$ and $z,$

Multiplying eqn 5 by 100,

$100x+300y+20z=2000 \quad\Idot (7)$

Now, subtract eqn 4 from eqn 7

$99x+295y=1940 \quad\Idot (8)$

Now, multiplying eqn 6 by 295. we have,

$885x+295y=5900 \quad\Idot (9)$

Now, subtract, eqn 8 from eqn 9, we get,

$786x=3960$

$x=\frac{3960}{786}$

$x=5.038 \quad\Idot (10)$

Now, substituting into eqn 6, we get

$y=4.886 \quad\Idot (11)$

Now, substitute eqn 10 and 11 into eqn 4, we have

$z=1.526$

4 0

3 years ago

Answer the circled ones and ill give brainiest!!

sergejj [24]

8B and 10 not sure probably centre??

3 0

3 years ago