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3 years ago

5 over 12 hour = ___ minutes

Mathematics

1 answer:

Vladimir79 [104]3 years ago

6 0

Answer:

Step-by-step explanation:

(5 / 12) * (1 hour) =25 minutes

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A recipe calls for 1/2 lb of flour for 1 batch. How many batches can be made with 1/4 lb?

zhenek [66]

Answer:

1/2 batch

Step-by-step explanation:

1/2=1

1/4=1/2

3 0

3 years ago

Read 2 more answers

Evaluate the expression -7 1/4x + 3 5/8 for x= -4

Misha Larkins [42]

Answer:

32 5/8 (or 32 and 5/8)

Step-by-step explanation:

Okay, so this problem is asking for us to solve this problem with the substitution of a variable: x = -4. Before we fully solve this problem, we need to replace all of those x variables with -4 so that it is easier to solve.

-7 1/4(-4) + 3 5/8.

To make this problem even easier to solve, let's turn these mixed numbers into improper fractions. To do this, multiply the denominator by the whole number. Then add the numerator to this number. The new number that you just got is now your new numerator for this number.

-29/4(-4) + 3 5/8.

Repeat the last step to turn the other mixed number into an improper fraction.

-29/4(-4) + 29/8.

Now let's multiply that -4 by 29/4. Because a whole number technically has a denominator of 1, we can now set up the next part of our problem. (The symbol * means multiplication since we can't use x since it is already being used as a variable in this equation.)

(-29/4 * -4/1) + 29/8.

29 + 29/8.

Now to solve the rest of this problem, let's convert the whole number of 29 so that it has a denominator of 8. This is that these two numbers are addable.

29 x 8 = 232

1 x 8 = 8

Now these numbers are addable. So:

232/8 + 29/8 = 261/8 = 32 5/8.

I hope that this helps.

4 0

3 years ago

Of the 30 students in the sixth period math class, 8 are also in the same fourth period science class. Which can be used to dete

Kazeer [188]

Answer:

A. (8/30)(22/29)(21/28)

Step-by-step explanation:

The key is in reading the question really thoroughly, like, way more than you would expect. The first person is from the group of 8, thus (8/30), but the other two cannot be from the group of 8. 30(students total) minus 8 (the 8 people from science class)=22 (remaining in math). You choose one person who is not from the group of 8, and you are left with 21 other people. The number of students available to be in a group goes down each time: 30 down to 29 down to 28 (the denominators). Kaboom, A. (8/30)(22/29)(21/28).

8 0

3 years ago

Read 2 more answers

How many times will 1/4 go into 6 7/10?

Firlakuza [10]

Answer: 93 and 4/5

Step-by-step explanation:

6 7/10 divided by 1/14

= 67/10 divided by 1/14

= 67/10 x 14/1

= 67/5 x 7/1

= 469/5

3 0

3 years ago

The Palm Beach High Swimming Team is holding a car wash to raise money

Wewaii [24]

Answer:

Step-by-step explanation:

From the graph attached,

Relation between the amount of money raised and number of car washed is represented by a straight line.

Let the equation of the line is,

y = mx + b

where m = slope of the line = charges for each car wash

b = y-intercept = Initial amount the team have before the car wash.

Slope of the line will define the charges of car wash for each car.

Since, slope of the line passing through $(x_1,y_1)$ and $(x_2,y_2)$ is,

m = $\frac{y_2-y_1}{x_2-x_1}$

Therefore, slope of the line passing through (0, 100) and (10, 150) will be,

m = $\frac{150-100}{10-0}$

m = 5

Therefore, charges of each car wash will be = $5

y-intercept of the line 'b' = 100

Equation of the line will be,

y = 5x + 100

If team wants to earn $300,

300 = 5x + 100

5x = 200

x = 40

Therefore, 40 cars will be needed to wash by the swim team to earn $300.

5 0

3 years ago