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3 years ago

What is the answer to this

Mathematics

1 answer:

Debora [2.8K]3 years ago

7 0

1. If they washed 12 cars in 3 hours you need to find out the rate of how many cars they washed per hour
12/3=4
They wash 4 cars per hour
In 8 hours they would have washed 32 cars
If they charge $5 per car then 32*5= 160
They would have earned $160 after 8 hours.
2. It's $48 for 12 packages
How many times does 12 go into 180?
180/12=15
So if you have to buy 15 of 12 packages then you would multiply 15*48
15*48= 720
It would be $720 for 180 packages.

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Angles θ and φ are angles in standard position such that:

BartSMP [9]

When $\theta$ terminates in quadrant III, both $\cos\theta$ and $\sin\theta$ are negative, and

$\sin^2\theta+\cos^2\theta=1\implies\cos\theta=-\sqrt{1-\sin^2\theta}=-\dfrac{12}{13}$

When $\varphi$ terminates in quadrant II, $\cos\varphi$ is negative and $\sin\varphi$ is positive, so

$1+\tan^2\varphi=\sec^2\varphi\implies\sec\varphi=-\dfrac{17}{15}$

which gives

$\cos\varphi=\dfrac1{-\frac{17}{15}}=-\dfrac{15}{17}$

$\tan\varphi=\dfrac{\sin\varphi}{\cos\varphi}=-\dfrac8{15}\implies\sin\varphi=\dfrac8{17}$

Now,

$\sin(\theta+\varphi)=\sin\theta\cos\varphi+\cos\theta\sin\varphi=-\dfrac{21}{221}$

7 0

3 years ago

On 4 Exam: More Percents, Ratios, Exponer

ohaa [14]

Answer:

4/5

Step-by-step explanation:

The ratio 8:10 represents 8/10 so if we simplify it the answer will be 4/5

HOPE IT HELPS

3 0

3 years ago

Fill in the blank: Outliers can affect _________ of a line of best fit calculated using the least squares method.

Komok [63]

Outliers can affect the slope of a line of best fit.

Step-by-step explanation:

Outliers are observed data points which are far from the least-squares line.They contain large errors.They occur as a result of incorrect data.Outliers have a big effect on the slope of a regression line.

Learn More

Outliers :brainly.com/question/11163452

Keywords: Outliers, effect, line of best fit, least squares method

#LearnwithBrainly

6 0

3 years ago

(WILLL GIVE BRAINLEST PLS HELP )

evablogger [386]

We're looking for 458*1.21, which is 554.18. That makes the answer $552, since that is the closest.

Thus, your answer is B.

Sure hope this helps!!

Pls mark me brainiest