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topjm [15]
3 years ago
12

(Zoom in) I’m just typing cause it needs to b 20 characters long.

Mathematics
1 answer:
Romashka [77]3 years ago
8 0

Answer:

<h2>C.</h2>

Step-by-step explanation:

ABC is congruent to GEF. The transformation made was reflecting over the origin.

<h2>I'm always happy to help :)</h2>
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Two​ trains, Train A and Train​ B, weigh a total of 167 tons. Train A is heavier than Train B. The difference of their weights i
Luba_88 [7]

Answer:

Step-by-step explanation:

Two​ trains, Train A and Train​ B, weigh a total of 167 tons. Train A is heavier than Train B. The difference of their weights is 145 tons. What is the weight of each​ train?

4 0
2 years ago
How many digits are there in the​ Hindu-Arabic form of ​25,840 x10^20?
melamori03 [73]

9514 1404 393

Answer:

  25

Step-by-step explanation:

The place whose value is 10^n has n digits to the right of it. This number can be written as ...

  0.25840×10^25

which makes the digit 2 be the 25th digit to the left of the decimal point.

There are 25 digits in the Hindu-Arabic form:

  2,584,000,000,000,000,000,000,000

3 0
2 years ago
A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than
Lemur [1.5K]

Answer:

4.65% probability that a randomly selected customer takes more than 10 minutes

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 7.45, \sigma = 1.52

Probability that a customer takes more than 10 minutes:

This is 1 subtracted by the pvalue of Z when X = 10. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 7.45}{1.52}

Z = 1.68

Z = 1.68 has a pvalue of 0.9535

1 - 0.9535 = 0.0465

4.65% probability that a randomly selected customer takes more than 10 minutes

6 0
2 years ago
A designer is making a rectangular prism box with maximum volume, with the sum of its length, width, and height 8 in. The length
Sever21 [200]

Answer:

width = 1.8 in

length =   3.6 in

height =8-3w =8-3(1.8)= 2.6 in

Step-by-step explanation:

A designer is making a rectangular prism box with maximum volume, with the sum of its length, width, and height 8 in

Let l , w and h are the length , width and height

l +w+h=8\\l=2w

Plug it in the first equation

2w+w+h=8\\3w+h=8\\h=8-3w

volume the box is length times width times height

volume = (2w)(w)(8-3w)\\16w^2-6w^3

To get maximum volume we take derivatived

v'=32w-18w^2

set the derivative =0 and solve for w

0=32w-18w^2\\0=-2w(9w-16)\\w=0 , w= \frac{16}{9}

width = 1.8 in

length = 2w= 3.6 in

height =8-3w =8-3(1.8)= 2.6 in

6 0
3 years ago
7th time’s a charm I genuinely just want to understand how to do this :( please! If f(x) is a linear function, what is the value
andre [41]
I think it would be nine
3 0
2 years ago
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