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3 years ago

What is 3/18 divided by 7/21... help plz

2 answers:

8 0

3/18 divided 7/21 =3/18 multiply by 21/7 (we have to flip the second fraction and multiply by 3/18)= 63/126=1/2
So the answer is 1/2

dangina [55]3 years ago

6 0

Answer: $1\dfrac{1}{6}$

Step-by-step explanation:

Dividing a fraction number by another fraction number is exactly same as to find the product of the first fraction and the reciprocal of the second fraction.

Therefore , if we divide $\dfrac{3}{18}$ by $\dfrac{7}{21}$ , then it is actually equals to the product of $\dfrac{3}{18}$ and reciprocal of $\dfrac{7}{21}$ .

Reciprocal of $\dfrac{7}{21}=\dfrac{21}{7}=\dfrac{3}{1}=3$ .

Now, $\dfrac{3}{18}\div\dfrac{7}{21}=\dfrac{3}{18}\times\dfrac{7}{21}$

$=\dfrac{1}{6}\times7=\dfrac{7}{6}=1\dfrac{1}{6}$

Hence, the answer is $1\dfrac{1}{6}$

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Jose has a board that is 44 inches long. He wishes to cut it into two pieces so that one piece would be 6 inches longer than the

WARRIOR [948]

The shorter piece should be 19 inches.

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3 years ago

1. Jordy brings in cupcakes for his class. He brings 2 cupcakes for each person in his class and 5 extra cupcakes as extra just

USPshnik [31]

Answer:

22 people

Step-by-step explanation:

49 - 5 = 44 cupcakes

44 ÷ 2 = 22 people

6 0

3 years ago

Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4 given the same value of y?

liq [111]

Answer:

Step-by-step explanation:

Since y will have same value, y doesn't really matter. Thus,

We can solve for y in the 2nd equation as:

-3x - y = 4

-3x - 4 = y

Now we can plug it into the first and solve for x:

-9x + 4y = 8

-9x + 4(-3x - 4) = 8

-9x - 12x - 16 = 8

-21x = 8 + 16

-21x = 24

x = 24/-21

x = -8/7

Correct answer is C.

4 0

3 years ago

Read 2 more answers

The probability distribution for a random variable x is given in the table X: -5,-3,-2,0,2,3 Probability: .17,.13,.33,.16,.11,.1

Ivan

Answer:

0.6 probability that $-2 \leq x \leq 2$

Step-by-step explanation:

The probability distribution is given in the table.

Probability that x is between -2 and 2.

Between -2 and 2, inclusive, we have -2, 0 and 2. So

$P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2)$

From the table:

$P(X = -2) = 0.33, P(X = 0) = 0.16, P(X = 2) = 0.11$ . So

$P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2) = 0.33 + 0.16 + 0.11 = 0.60$

0.6 probability that $-2 \leq x \leq 2$

4 0

3 years ago

A brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches. The b

givi [52]

The mass of brick is 2478 gram

Solution:

A brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches

Length = 8 inches

Width = 3.5 inches

Height = 2 inches

The volume of rectangular prism is given as:

$volume = length \times width \times height$

$volume = 8 \times 3.5 \times 2\\\\volume = 56$

Thus volume of brick is 56 cubic inches

Convert inches to centimeter

1 inch = 2.54 centimeter

Therefore,

56 cubic inches = 56 x 2.54 x 2.54 x 2.54 cubic centimeter

56 cubic inches = 917.676 cubic centimeter

Thus, we get,

volume = 917.676 cubic centimeter

The brick has a density of 2.7 grams per cubic centimeter

Density = 2.7 grams

The mass of brick is given by formula:

$mass = density \times volume$

Substituting the values we get,

$mass = 2.7 \times 917.676\\\\mass = 2477.724 \approx 2478$

Thus mass of brick is 2478 gram

7 0

3 years ago