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2 years ago

1. Find the unit rate for lessons at Sit and Stay School. Show your work. Write your answer in the space below.

Mathematics

2 answers:

timofeeve [1]2 years ago

4 0

Answer: $8

Step-by-step explanation:

96/12=8/1

scoray [572]2 years ago

3 0

Answer: first one = 8

second one = 25

Step-by-step explanation: 96 divided by 12 = 8

125 divided by 25 = 25

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Priya can bike 150 meters in 20 seconds at this rate , how long would it take her to bike in 3,000 meters???????? Does anyone kn

ExtremeBDS [4]

Answer:

400 seconds

Step-by-step explanation:

150/20=7.5 meters per second

3000/7.5=400 seconds

3 0

3 years ago

Can sum1 answer asap and pls give explanation :)

Tju [1.3M]

Answer:

whats the question

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

a random sample of 510 high school students has a normal distribution. The sample mean average ACT exam score was 21 with a 3.2

34kurt

Answer:

CI = 21 ± 0.365

Step-by-step explanation:

The confidence interval is:

CI = x ± SE * CV

where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).

Here, x = 21.

The standard error for a sample mean is:

SE = σ / √n

SE = 3.2 / √510

SE = 0.142

The critical value is looked up in a table or found with a calculator. But first, we must find the alpha level and the critical probability.

α = 1 - 0.99 = 0.01

p* = 1 - (α/2) = 1 - (0.01/2) = 0.995

Using a calculator or a z-score table:

P(x<z) = 0.995

z = 2.576

Therefore:

CI = 21 ± 0.142 × 2.576

CI = 21 ± 0.365

Round as needed.

8 0

3 years ago

Two trains leave stations 306 miles apart at the same time traveling toward each other one is traveling at 90 mph the other at 8

Sergeu [11.5K]

Answer:

They will meet in 1.8 hours.

Step-by-step explanation:

Given that, distance between trains = 306 miles

Let they take time $'t'$ to meet each other.

Speed of first train = 90 mph

Speed of second train = 80 mph

Let distance traveled by first train = $D_1$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_1 = 90t$

Let distance traveled by first train = $D_2$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_2 = 80t$

Total distance traveled is 306 miles.

i.e.

$D_1+D_2=306\\\Rightarrow 90t +80t=306\\\Rightarrow 170t=306\\\Rightarrow t =\dfrac{306}{170}\\\Rightarrow \bold{t=1.8\ hr}$

They will meet in 1.8 hours.

3 0

2 years ago

9. An item is priced al $13.62. If the sales tax is 6%, what does the

zheka24 [161]

Answer:

A (14.44)

Step-by-step explanation:

13.62 multiplied by 6%= 0.8172

Add 13.62 and 0.8172= 14.4372

Round to the hundredths=14.44

5 0

2 years ago