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2 years ago

What is most likely true about the population of 250 grandparents

Mathematics

2 answers:

Gnom [1K]2 years ago

8 0

Answer: More grandparents prefer using hard copy rather than a digital copy.

Step-by-step explanation:

Given: The total number of grandparents surveyed = 250

which is 10 times n where n is the sample size = 25

i.e. we need to multiply 10 to each number given in picture.

Therefore, the number of grandparents surveyed prefer digital copy = $4\times10=40$

The number of grandparents surveyed prefer digital copy = $21\times10=210$

Clearly 210>40

Therefore, More grandparents prefer using hard copy rather than a digital copy.

Goshia [24]2 years ago

3 0

Answer:more grandparents prefer using a hard copy than using a digital copy

Step-by-step explanation:

21 is greater then 4

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Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.00 × 10 − 4 m², and the speed of the

Setler79 [48]

Answer: $A_2=0.349\times 10^{-4} m^2$

Step-by-step explanation:

Given

velocity $v_1=0.72 m/s$

Area of cross-section $A_1=1\times 10^{-4} m^2$

velocity after Falling 0.19 m

$v_2^2-v_1^2=2g\cdot h$

$v_2^2=v_1^2+2g\cdot h$

$v_2^2=(0.72)^2+2\times 9.8\times 0.19$

$v_2^2=0.518+3.724$

$v_2=\sqrt{4.24}$

$v_2=2.05 m/s$

conserving Flow

$A_1v_1=A_2v_2$

$1\times 10^{-4}\times 0.72=A_2\times 2.05$

$A_2=0.349\times 10^{-4} m^2$

8 0

2 years ago

Simplify 5(81/3 + 241/3)1/4

madreJ [45]

Answer:

$214\frac{2}{3}$

Step-by-step explanation:

$8\bigg(\frac{81}{3}+\frac{241}{3}\bigg)\frac{1}{4} \\\\= 8\bigg(\frac{81+241}{3}\bigg)\frac{1}{4} \\\\= 8\bigg(\frac{322}{3}\bigg)\frac{1}{4} \\\\= 8\times\frac{322}{3}\times\frac{1}{4} \\\\= 2\times\frac{322}{3}} \\\\= \frac{644}{3}} \\\\= 214\frac{2}{3} \\$