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2 years ago

Mario travels 180 miles in 2.5 hours. How many miles will he travel in one hour, if the rate is not changed? Explain.

2 answers:

Colt1911 [192]2 years ago

8 0

Your answer is 180/2.5. The rate goes 180 miles in 2.5 hours, so to find the rate, divide 180 by 2.5. You will get 72. The rate is 72 mph, so your answer is 72.

Furkat [3]2 years ago

7 0

I think it’s 40 but I’m not really sure or it’s around 80 sorry

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Rite the phrase as an expression. Then evaluate when y=20. 3 less than the quotient of a number y and 4 Expression: When y=20, t

Ilya [14]

Answer:

$\frac{y}{4} - 3$

$\frac{y}{4} - 3 = 2$ -- when y = 20

Step-by-step explanation:

The quotient of y and 4 can be represented as:

$\frac{y}{4}$

3 is less the above expression is:

$\frac{y}{4} - 3$

So, the required expression is: $\frac{y}{4} - 3$

When y = 20, we have:

$\frac{y}{4} - 3 = \frac{20}{4} - 3$

$\frac{y}{4} - 3 = 5 - 3$

$\frac{y}{4} - 3 = 2$

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2 years ago

Read 2 more answers

Logan made a profit of $210.00 as a mobile groomer. He charged $75.00 per appointment and received $35.00 in tips, but also had

Nikolay [14]

Answer:

x = 7/3 - 2y/15

Step-by-step explanation:

$210.00 = $75.00x + $35.00 + $10.00

x = 7/3 - 2y/15

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3 years ago

an actor is 6ft tall. on a billboard the actors height in the picture is 16.8. what is the scale factor

pychu [463]

Answer:

Scale Factor (small to large) is 2.8

Step-by-step explanation:

The scale factor is "how many times" it is larger.

If we have an actual quantity be "a" and the enlarged quantity be "b" and we let the scale factor be "k", we can write the equation shown below:

$ka=b$

So, we basically mean "what number" (scale factor) should be multiply with the actual value (smaller one) to get the enlarged value (bigger one). From the problem, we can write:

\ $k(6)=16.8$

Now we find "k", the scale factor:

$k(6)=16.8\\k=\frac{16.8}{6}\\k=2.8$

Hence, the scale factor is 2.8

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3 years ago

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3 years ago

Application of the least squares method results in values of the y-intercept and the slope that minimizes the sum of the squared

alisha [4.7K]

Answer:

The least squares method results in values of the y-intercept and the slope, that minimizes the sum of the squared deviations between the observed (actual) value and the fitted value.

Step-by-step explanation:

The method of least squares works under these assumptions

The best fit for a data collection is a function (sometimes called curve).
This function, is such that allows the minimal sum of difference between each observation and the expected value.
The expected values are calculated using the fitting function.
The difference between the observation, and the expecte value is know as least square error.

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3 years ago