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3 years ago

(01.07)

1 answer:

3 0

*The answer is A. 24.*

All you have to do is back solve. In other words, just plug your answer choices into the equation.

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A bag contains 3 red marbles, 7 blue marbles and 5 green marbles. If three marbles are drawn out of the bag, what is the probabi

Gnoma [55]

Answer:

1/3

Step-by-step explanation:

since the total number of marbles are 3+7+5=15

and the number of green marbles=5

so probability of three marbles drawn being green=5/15=1/3

8 0

2 years ago

Read 2 more answers

8*11=(8*10)+(1*10) is the equation true

svet-max [94.6K]

Answer:

Step-by-step explanation:

8*10=80, 1*10=10

80+10=90

8*11=88

88 does not equal 90 so no

5 0

3 years ago

Read 2 more answers

la diferencia entre el mayor y menor termino de una proporcion geometrica continua es 15.si el otro termino es 10 hallar la suma

Aleksandr-060686 [28]

25=10+15=25,because I said so.

8 0

3 years ago

How do you solve this problem? population proportion is to be estimated from a sample of 400 with a sample proportion of 0.1. Ap

Ivan

Answer:

(0.0706, 0.1294)

Step-by-step explanation:

Confidence interval of a proportion is:

CI = p ± CV × SE

where p is the proportion,

CV is the critical value (z score or t score),

and SE is the standard error.

The sample is large enough to estimate as normal. For 95% confidence level, CV = z = 1.96.

Standard error for a proportion is:

SE = √(pq/n)

SE = √(0.1 × 0.9 / 400)

SE = 0.015

The confidence interval is:

CI = 0.1 ± (1.96)(0.015)

CI = (0.0706, 0.1294)

Round as needed.

6 0

3 years ago

Pisces is replacing paving stones for her inground pool. Her pool is 10m by 5m and is surrounded by a 1 1/2 border of paving sto

faust18 [17]

Answer:

The number of paving stones she needs is 540 paving stone

Step-by-step explanation:

The given dimensions of Pisces' inground pool = 10 m by 5 m

The thickness of the border surrounding the pool = 1 1/2

The dimensions of each paving stone = 25 cm by 40 cm = 0.25 m by 0.4 m

The length dimension of the pool and border = 10 + 2 × 1 1/2 = 13 m

The width dimension of the pool = 5 + 2 × 1 1/2 = 8 m

The total area of the paving stone, $T_A$ = Area of pool + border - Area of pool

∴ $T_A$ = 13 m × 8 m - 10 m × 5 m = 54 m²

The total area of the paving stone = 54 m²

The area of each paving stone, $A_{EP}$ = 0.25 m × 0.4 m = 0.1 m²/paving stone

The number of paving stones she needs, n = (The total area of the paving stone)/(The area of each paving stone)

∴ n = 54 m²/(0.1 m²/paving stone) = 540 paving stone.

5 0

3 years ago