3 years ago

-21:(-7)+4.(-7-12 = CUANTOS ES??

Mathematics

1 answer:

KiRa [710]3 years ago

7 0

The answer is 71
Is it simplify or evaluate

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Y is directly proportional to x,<br> and y = 45 when x = $600...<br> Find y if x = $1000.

Paul [167]

Answer:

The Answer is: 75.

Step-by-step explanation:

Set up the equation:

45 / 600 = y / 1000

600y = 45 * 1000

600y = 45000

y = 45,000 / 600 = 75.

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3 years ago

the ratio of pink marbles to White Marbles Tamara's bag is equal to 1:5 what is the percent of pink marbles

dusya [7]

It would be 20% because if you take 100 times 1/5, which is the same as 100/5, you would get 20, which is 1/5.

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3 years ago

Read 2 more answers

Help pls ill love you forever

Nesterboy [21]

Answer:

$y-4=\frac{1}{5}(x-7)$

Step-by-step explanation:

The point-slope form of a line is given by:

$y-y_1=m(x-x_1)$

Where

(x_1,y_1) is the coordinate pair (any of the points given)

m is the slope. The ratio of change in y coordinates by x coordinates

Let's calculate the slope:

$m=\frac{4-3}{7-2}\\m=\frac{1}{5}$

Now, it is given "y - 4", so y_1 is 4, so they are using the coordinate pair (7,4). So we can say x_1 = 7

Now we have all the values, lets write the equation:

$y-y_1=m(x-x_1)\\y-4=\frac{1}{5}(x-7)$

This is the point-slope form.

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3 years ago

A chocolate chip cookie recipe requires one and three quarters cups of flour to one cup of chocolate chips. If four and two thir

nikitadnepr [17]

1 cup of chocolate chips for every 1and 3/4 cup of flour

so divide 4 and 2/3 x 1 and 3/4

turn them both into fractions

4 2/3 = 14/3

1 3/4 = 7/4

14/3 / 7/4 = 14/3 x 4/7 = 56/21 = 2 and 2/3 cups of chocolate chips are needed

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3 years ago

A bookstore sells books at 25% profit calculate the percentage of sales price to cost price ?

g100num [7]

Answer:

Cost price=100%

Step-by-step explanation:

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3 years ago