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3 years ago

Help me please!!!!!!!

Mathematics

1 answer:

ivanzaharov [21]3 years ago

6 0

Answer:

t = 13

Step-by-step explanation:

Since this is an isosceles triangle, AC = BC

So you can from the equation:

2t + 5 = 3t - 8

t = 13

You might be interested in

25% of what number is 50?

LekaFEV [45]

Answer:

200

Step-by-step explanation:

The unknown number = x

25% of x = 50

25% of x = 0.25x

0.25x = 50

Multiply both sides of the equation by 4

x = 200

Hope this helps :)

5 0

3 years ago

What is the volume of the rectangular prism? Type the answer in the boxes below.

Wittaler [7]

Answer:

15 cm^3

Step-by-step explanation:

I think it's 15 because if you count, there are 30 boxes. Each box has a volume of 1/2, so you are supposed to multiply, which means 1/2x30.

1/2x30=15

I hope it's right!

8 0

3 years ago

A bookstore bought a case of 10 books at a wholesale price of $84. The bookstore will sell the books at a 25 percent markup, and

Nata [24]

All you have to do is multiply 84 by 25%

And that's your answer.

I hope this helped

4 0

3 years ago

Read 2 more answers

Sally has just finished her thirty-fifth year with her company and is getting ready to retire. During her thirty-five years, Sal

olya-2409 [2.1K]

The correct answer is:

$19,153.26.

Explanation:

She will receive 42% of her average annual salary. This salary was $45,603.

To find 42% of a number, we first convert the percent to a decimal: 42% = 42/100 = 0.42.

Next we multiply this by the number we're taking the percent of:

0.42(45603) = 19153.26.

7 0

3 years ago

Read 2 more answers

High school students across the nation compete in a financial capability challenge each year by taking a National Financial Capa

zalisa [80]

Answer:

The students have to score 0.74 standard deviations above the mean to be publicly recognized.

Step-by-step explanation:

A random variable X is said to have a normal distribution with parameters µ (mean) and σ² (variance).

If $X \sim N (\mu, \sigma^{2})$ , then $z=\frac{X-\mu}{\sigma}$ , is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, $Z \sim N (0, 1)$ .

The distribution of these z-scores is known as the standard normal distribution.

The z-score is a standardized form of the raw score, X. It is a numerical measurement of the relationship between a value (X) and the mean (µ) in terms of the standard deviation (σ). A z-score of -1 implies that the data value is 1 standard deviation below the mean. And a z-score of 1 implies that the data value is 1 standard deviation above the mean.

Let X be defined as the scores of students at the National Financial Capability Challenge Exam.

It is provided that the students who score in the top 23% are recognized publicly for their achievement by the Department of the Treasury.

That is, P (X > x) = 0.23.

⇒ $P(\frac{X-\mu}{\sigma}>\frac{x-\mu}{\sigma})=0.23$