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Paraphin [41]
4 years ago
12

There are 4 times as many used cars in the car dealer ship lot is there a new car there are 120 cars total in the dealership lik

e how many new cars are in the dealership lot
Mathematics
2 answers:
guapka [62]4 years ago
6 0
There are 30 new cars and 90 used cars in the dealership.

120/4=30 new
120-30=90 used
DerKrebs [107]4 years ago
6 0

Answer:

New cars 24

Step-by-step explanation:

let new car are X

used car are 4X

total car = 4x+x=120

5x=120

x=120/5=24

new car =24

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Stells [14]

Answer:

the correct answer is b

Step-by-step explanation:


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3 years ago
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kodGreya [7K]

Because the graph is starting high and going down, your answer is c- exponential decay

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Vlad [161]

Answer:

5

Step-by-step explanation:

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4 0
2 years ago
The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,
bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06

So, s would be

s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075

So, the value of test statistic would be

t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90

Hence, the test statistic is t= -0.90.

7 0
3 years ago
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