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OleMash [197]
2 years ago
12

*PLEASE HELP!! I'LL GIVE 50 PTS AND BRAINLY!!*

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
6 0

Answer:

$80 dollars

Step-by-step explanation:

Darina [25.2K]2 years ago
4 0

Answer:

80$ an hour

Step-by-step explanation:

100 x 1/5 = 20 100-20 = 80

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Easy problems I'm having trouble remembering how to do!
beks73 [17]
<h2>Answer:</h2>

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7 0
3 years ago
Your company gives you a cell phone plan which allows you 600 minutes to talk per month. So far this month, you have used 330 mi
Evgen [1.6K]
The answer is C) 10x + 330 ≤ 600. 
We use the ≤ since you are allowed to use the 600th minute.
When we subtract 330 from both sides, it makes a bit more sense
10x ≤ 270
270 is the number of minutes left your plan since you've already used 330, and you have 10 days left in the month. 
3 0
3 years ago
In recent commercials Toyota claimed that 80% of its vehicles sold in the past 20 years are still on the road. You work for an a
Anvisha [2.4K]

Answer:

Step-by-step explanation:

We have to perform one sample proportion test. To do so we have to proceed through following steps.

(1) We have to collect data about vehicle sales in last 20 years.

(2) Using random number table or random number generator or otherwise we have to select sample of vehicles from the list of sale. In this step, we have to keep an eye on the fact that sample is to be selected from all years (all of 20). Using stratified random sampling by dividing vehicles sold over different years is an effective way to do so. That means, we may divide vehicles sold into 20 homogeneous strata over 20 years and select sample from each strata.

(3) After selecting sample of vehicles we have to communicate to corresponding vehicle owners to gather information about that particular vehicle.

(4) We have to note number of vehicles which are still on the road.

Suppose, we have selected  n vehicles as sample and after communicating we found that \tiny r of those are still on the road.

We have to test for null hypothesis H_0:p=0.80

against the alternative hypothesis H_1 \neq 0.80

Our test statistic is given

z=\frac{\hat p - p_0}{\sqrt{p_0(1-p_0)/n} }

here,

\hat p =\frac{r}{n}

p_0 =0.80

z=\frac{r/n-0.80\sqrt{n} }{0.40} \\\\=2.5(\frac{r}{n} -0.8)\sqrt{n}

We then calculate corresponding p-value.

We reject our null hypothesis if \text{p-value} , level of significance.

According to our obtained p-value and level of significance we proceed to certain conclusion.

8 0
3 years ago
Subtract and reduce: 2 2/3 - 1 1/2
babunello [35]

Step-by-step explanation:

I used a calculator but the answer is 1 1/6

5 0
3 years ago
Abby packs plastic cubes in a box. Each cube is 1 square centimeter.
ira [324]

Answer:

2640 cubes

Step-by-step explanation:

20 cm x 12 cm x 11 cm = 2640 cm^3

5 0
3 years ago
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