2 years ago

Mai has 40 tens. write how many hundreds. write the number.

Mathematics

1 answer:

Olegator [25]2 years ago

4 0

40 tens = how many hundreds. 40 x 10 = 400

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abruzzese [7]

Answer:

Sammy charges less by $3.75

Step-by-step explanation:

givens

-Sammy: 21.75 for 3 hrs

-y=8x for Claire

-5 hours, and who charges less?

21.75/3

$7.25/hr

y=8(5)

y=$40

y=7.25(5)

y=$36.25

40-36.25

$3.75

5 0

2 years ago

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Automobile mechanics conduct diagnostic tests on 150 new cars of a particular make and model to determine the extent to which th

Aleks04 [339]

Answer:

99% Confidence interval: (0.185,0.375)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 150

Number of cars that have faulty catalytic converters, x = 42

$\hat{p} = \dfrac{x}{n} = \dfrac{42}{150} = 0.28$

99% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.58$

Putting the values, we get:

$0.28\pm 2.58(\sqrt{\frac{0.28(1-0.28)}{150}}) = 0.28\pm 0.095\\\\=(0.185,0.375)$

The 99% confidence interval for the true proportion of new cars with faulty catalytic converters is (0.185,0.375)

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2 years ago

The function h(x) = 2.5x + 20 represents your height in inches, h(x), for x years you have been alive. How many inches tall will

sveticcg [70]

Answer:

Step-by-step explanation:

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2 years ago

Mei and Anju are sitting next to each other on different horses on a carousel. Mei's horse is 3 meters from the center of the

SOVA2 [1]

Answer:

$2\pi \approx 6.28\ meters$

Step-by-step explanation:

Mei's horse is 3 meters from the center of the carousel. After one rotation, Mei travelled

$l_M=2\pi r=2\pi \cdot 3=6\pi\ meters$

Anju's horse is 2 meters from the center. After one rotation, Mei travelled

$l_A=2\pi r=2\pi \cdot 2=4\pi\ meters$

The difference in their travelled distances is

$l_M-l_A=6\pi -4\pi =2\pi \approx 6.28\ meters$

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2 years ago

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Compare the values of the underlined digits. 2,783 and 7,283.

netineya [11]

The value of the 2 in the thousands place is 10 times the value of 2 in the hundreds place.

200 x 10 = 2000

hope this helps

4 0

2 years ago