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3 years ago

What is. the fraction1/5 of 80?

Mathematics

2 answers:

Ksivusya [100]3 years ago

8 0

$\dfrac{1}{5}\cdot 80=16$

Yuliya22 [10]3 years ago

5 0

$\frac{1}{5} \times 80=\frac{80}{5}=\frac{16 \times 5}{5}=16$

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Find the solution of this system of equations.

Elenna [48]

<span>-4x + y = -25 y = 4x - 25

-6x - 6y = 0 </span>

-6x - 6(4x - 25) = 0
-6x - 24x + 150 = 0
-30x + 150 = 0
-30x = -150
x = 5

y = 4(5) - 25
y = 20 - 25
y = -5

(5, -5)

8 0

3 years ago

What is the slope of –3x + 5y = 10? A. m = B. m = 5 C. m = – D. m = –3

nika2105 [10]

Answer:

The slope is 3/5

Step-by-step explanation:

–3x + 5y = 10

Rewrite the equation in slope intercept form y = mx+b where m is the slope and b is the y intercept

Add 3x to each side

5y = 3x+10

Divide by 5

y = 3/5 x + 10/2

The slope is 3/5

7 0

3 years ago

Two number cubes are rolled sequentially. What is the probability that the first number cube shows a five and the other number c

nexus9112 [7]

The probability of first number cube shows a five and the other number cube shows an even number is $\frac{1}{12}$ .

Solution:

Two cubes are rolled sequentially.

Sample space when two dies are rolled

$=\left\{\begin{array}{l}{(1,1),(1,2),(1,3),(1,4),(1,5),(1,6)} \\{(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)} \\{(3,1), 3(, 2),(3,3),(3,4),(3,5),(3,6)} \\{(4,1),(4,2),(4,3),(4,4),(4,5),(4,6)} \\{(5,1),(5,2),(5,3),(5,4),(5,5),(5,6)} \\{(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)}\end{array}\right\}$

Number of sample space = 36

Even numbers getting when two cubes rolled are 2, 4, 6.

First number cube shows a five and the other number cube shows an even number = {(5, 2), (5, 4), (5 6)}

Number of first number cube shows a five and the other number cube shows an even number = 3

Probability of first number cube shows a five and the other number cube shows an even number

$=\frac{\text{Number of outcomes}}{\text{Total number of sample space}}$

$$=\frac{3}{36}$

$$=\frac{1}{12}$

Hence, the probability of first number cube shows a five and the other number cube shows an even number is $\frac{1}{12}$ .

8 0

3 years ago

I cant figure this out please somome help me please!!!

Nastasia [14]

Just saying BTW that this isn't a mathematics questions per say.

The main reason why cities are placed on coasts is so they are able to trade their goods with other nations abroad, as well as other coastal cities in their own region.

5 0

3 years ago

At the city museum, child admission is $5.20 and adult admission is $8.30 . On Monday, three times as many adult tickets as chil

harkovskaia [24]

Let # of child tickets = c
# of adult tickets = 3c
3c (8.30) + c (5.20) = 1173.90
24.9c + 5.2c = 1173.90
30.1c=1173.90
c=39 tickets
3c=39x3= 117 tickets
Therefore, 39 child tickets and 117 adult tickets were sold on monday, thus, a total of 156 tickets were sold.

5 0

3 years ago