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4 years ago

Use the formula d=rt to find the value of the missing variable. r=3 mph, t=9 hours find d= mi

2 answers:

7 0

Use the distance equation (d=rt) and plug in the known variables:
d=rt
d=3 x 9

Solve for d:
d=27 miles

Hope this helps :)

oksian1 [2.3K]4 years ago

4 0

D=27 miles
hope this helps :):)

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How to show my daughter to do this and it needs to be changed to a mix number.

densk [106]

Solution 1 by separating parts

Rewriting our equation with parts separated

−5/6 −2−1/10

Solving the fraction parts

−5/6−1 1/0=?

Find the LCD of 5/6 and 1/10 and rewrite to solve with the equivalent fractions.

LCD = 30

−25/30−3/30= −28/30

Reducing the fraction part, 28/30,

−28/30= −14/15

Combining the whole and fraction parts

−2−14/15= −2 14/15

Solution by Formulas

converting mixed numbers to fractions, our initial equation becomes,

−5/6−21/10

Applying the fractions formula for subtraction,

=(−5×10)−(21×6)6×10

=(−50−126) / 60

= −176 / 60

Simplifying -176/60, the answer is

= −2 14/15

I hopes this helps!!! :)

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3 years ago

Which one is the better buy $3 and 2 refills $4 and 3 refills

Brums [2.3K]

Answer:

Step-by-step explanation:

3 and 2

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3 years ago

Read 2 more answers

A physical fitness association is including the mile run in its secondary school fitness test. The time for this event for boys

Ierofanga [76]

Answer:

A) 0.0107

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 440 seconds and a standard deviation of 40 seconds.

This means that $\mu = 440, \sigma = 40$