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3 years ago

There are 25 students in a class, 40 percent of whom are girls. If the average

Mathematics

1 answer:

svetoff [14.1K]3 years ago

5 0

Answer:

135

Step-by-step explanation:

120 + 150 = 270

270 ÷ 2 = 135

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Anna buys 6 bottles of pineapple juice at the corner store for a total cost of $4.50.

makkiz [27]

Answer:

c = 0.75j

Step-by-step explanation:

divide $4.50 by 6 to find the price of one bottle of pineapple juice

4.50/6 = 0.75

each bottle of pineapple juice is 75 cents each

c = 0.75j

4 0

3 years ago

You randomly draw A marble from a bag, record it’s color, and then replace it. You draw a blue marble 11 out of 50 times. What i

aliina [53]

Answer:

i think it will be a 11/50 chance or 22/100 hope this helps

Step-by-step explanation:

5 0

3 years ago

In ΔKLM, l = 2.4 inches, m = 4.2 inches and ∠K=159°. Find the length of k, to the nearest 10th of an inch.

ladessa [460]

Answer:

6.5

Step-by-step explanation:

DeltaMath

4 0

3 years ago

X+y=180 x=10y+48 (With Steps Plz)

ladessa [460]

Answer:

(168,12)

Step-by-step explanation:

Substitute x = 10y+48 in the first equation.

$10y + 48 + y = 180 \\ 11y = 180 - 48 \\ 11y = 132 \\ y = \frac{132}{11} \\ y = 12$

We have got the y-value. Our next goal is to find the x-value by substituting y-value in any given equations.

For me, I will be substituting y = 12 in the first equation.

$x + 12 = 180 \\ x = 180 - 12 \\ x = 168$

Answer Check

Substitute both x-value and y-value in both equations.

$168 + 12 = 180 \\ 180 = 180$

Our first equation is true for both values.

$168 = 10(12) + 48 \\ 168 = 120 + 48 \\ 168 = 168$

Our second equation is true for both values.

Thus, the answer is (168, 12)

5 0

3 years ago

Solve (x + 5)2 = 48.

natita [175]

Answer:

x = -5 ±4sqrt(3)

Step-by-step explanation:

(x + 5)^2 = 48

Take the square root of each side

sqrt((x + 5)^2) = ±sqrt(48)

x+5 = ±sqrt(16*3)

x+5 = ±4sqrt(3)

Subtract 5 from each side

x = -5 ±4sqrt(3)

7 0

3 years ago