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3 years ago

On a road trip, Yousef drove the same distance everyday for 8 days. On the ninth day, he drove 100 km. He drove a total of

Mathematics

1 answer:

Monica [59]3 years ago

8 0

Answer:

12.5

Step-by-step explanation:

100:8=12.5 km (he drove 12.5 km for each day)

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Five more than 3 times a number

ipn [44]

Answer:

3x+5

Step-by-step explanation:

Let number =X

Five more than 3 times a number

3x+5

5 0

3 years ago

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there are red and white roses in a vase 30% are red .there are 21 white roses.how many are there in total

jarptica [38.1K]

Answer:

Step-by-step explanation:

21 roses are white so that is 70%

so that would be 70/100 and can reduce to 7/10

and the percent of red would be 3/10

so we can do 21 divided by 7 which equals 3

then we can do 3 x 3 because 3/10 which equals 9

then you do 21 + 9= 30

so the answer is 30.

3 0

2 years ago

(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate

Anon25 [30]

Answer:

The margin of error (E) $=0.49$

Step-by-step explanation:

Given,

mean $\bar{x}=6.88$

standard deviation $\sigma=1.90$

sample size $n=41$

$90\% \quad \text{confidence interval}$

Critical value $=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]$

$=1-0.90$

$\Rightarrow \alpha=0.1$

Critical value $=\frac{z_{0.1}}{2}$

$=z_{0.05}$

$=1.645$

The margin of error (E) $=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }$

$=1.645\times\frac{1.90}{\sqrt{41} }$

$=0.49$

Hence, The margin of error (E) $=0.49$

Complete question is attached in below.

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3 years ago

What's true about centimeters and kilometers?

Mama L [17]

They are both SI units of measurements

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3 years ago

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What are the coordinates of the vertex of the table? Is it a minimum or a maximum?

Anit [1.1K]

The answer would be C.(-2,-3); Minimum.
You can tell be cause the points are going down<span />

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2 years ago