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Contact [7]
2 years ago
13

What number goes to the blank space t make the following equation true 43+29= +60

Mathematics
2 answers:
Troyanec [42]2 years ago
4 0
43 + 29 = 72

12 + 60 = 72

Therefore, it’s 12
aliya0001 [1]2 years ago
3 0
I believe 6/5 is the value of t
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Solve for n.<br> 2n - 3<br> 5<br> =<br> = 5<br> Enter your answer in the box.<br> n =
Zina [86]

Answer:

2n - 35 = 5 \\ 2n = 5 + 35 \\ 2n = 40 \\ n = 40 \div 2 \\ n = 20

4 0
2 years ago
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Plzz help me with the correct ans find x ​
Tresset [83]

Answer:

15

Step-by-step explanation:

Since, triangle ABC is the enlargement of triangle XYZ.

\therefore \triangle ABC \sim \triangle XYZ

So, corresponding sides of both the triangles would be in proportion.

\therefore \frac{x}{6}=\frac{25}{10}

\therefore x= \frac{6\times 25}{10}

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3 years ago
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5. Based on recent results, scores on the SAT test are normally distributed with a mean of 1511 and a standard deviation of 312.
Mekhanik [1.2K]

Answer:

The actual SAT score is 2024.

The equivalent ACT score is 29.49.

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.

SAT score that is in the 95th percentile

Scores on the SAT test are normally distributed with a mean of 1511 and a standard deviation of 312, which means that \mu = 1511, \sigma = 312

95th percentile is X when Z has a pvalue of 0.95, so X when Z = 1.645. The score is:

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

1.645 = \frac{X - 1511}{312}

X - 1511 = 1.645*312

X = 2024

The actual SAT score is 2024.

Equivalent ACT score:

The equivalent ACT score is the 95th percentile of ACT scores.

Scores on the ACT test are normally distributed with a mean of 21.1 and a standard deviation of 5.1, which means that \mu = 21.1, \sigma = 5.1. So

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

1.645 = \frac{X - 21.1}{5.1}

X - 21.1 = 1.645*5.1

X = 29.49

The equivalent ACT score is 29.49.

5 0
2 years ago
5(k - 78) = 40<br> Please help
solong [7]

Answer:

k=86

Step-by-step explanation:

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3 years ago
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Please help with 16 and 17 those are hard
notka56 [123]
The answer to number 17 is c
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3 years ago
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