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nata0808 [166]
2 years ago
5

4x-5=19 please help thank you

Mathematics
2 answers:
SpyIntel [72]2 years ago
8 0
The answer for 4x-5=19 is 6
frosja888 [35]2 years ago
4 0

Answer:

x=6

Step-by-step explanation:

4x - 5 = 19

4x = 19 + 5

4x = 24

x =  \frac{24}{4}

x = 6

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Jeremy wants to verify that the transformation shown is a dilation. He finds the lengths of segments QA and AD to be 4 units.
kirill [66]
From the figure, the dilation constant from ΔABC to ΔDEF is
QD/QA = 8/4 = 2

Test QB = QE:
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QB = (1/2) QE
The statement is incorrect.

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QC = (1/2) QF, or QC = CF
The statement is correct.

Test DE = 2AB:
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AB = (1/2)DE, or 2AB = DE.
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Test AC = EF:
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We should also have
BC = (1/2)EF
Therefore, if BC = 2.25, then
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7 0
3 years ago
Read 2 more answers
60% of ____________ = 75
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6 0
3 years ago
Read 2 more answers
It takes the high-speed train x hours to travel the z miles from Town A to Town B at a constant rate, while it takes the regular
STatiana [176]

Answer:

B

Step-by-step explanation:

To solve this, we use ratio.

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Ratio of this used by high speed train = x/(x +y).

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For low speed train = [y/(x + y)] × z.

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= z [ (x - y)/x + y)]

7 0
4 years ago
Find the upper 20%of the weight?
meriva

Answer:

The upper 20% of the weighs are weights of at least X, which is X = 0.84\sigma + \mu, in which \sigma is the standard deviation of all weights and \mu is the mean.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Upper 20% of weights:

The upper 20% of the weighs are weighs of at least X, which is found when Z has a p-value of 0.8. So X when Z = 0.84. Then

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

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

X = 0.84\sigma + \mu

The upper 20% of the weighs are weights of at least X, which is X = 0.84\sigma + \mu, in which \sigma is the standard deviation of all weights and \mu is the mean.

6 0
3 years ago
Which multiplication problem is represented by the model?
maksim [4K]
0.8 is the answer I hope this helps if you don’t want it decimal form here’s exact from 4/5
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3 years ago
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