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Artyom0805 [142]
3 years ago
5

The ratio of the number of tests Jed passed this year to the number of tests he failed is 13:3. What percent of all tests Jed to

ok this year he failed?
Mathematics
2 answers:
valentinak56 [21]3 years ago
8 0

Answer:

18.75%

Step-by-step explanation:

Altogether he took 16 tests he failed 3 so we need to find 3 is what percent of 16.

saul85 [17]3 years ago
5 0

Answer:

18.75%

Step-by-step explanation:

Altogether he took 16 tests he failed 3 so we need to find 3 is what percent of 16.

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<span>Simplifying 2x + 18y = 36 Solving 2x + 18y = 36 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18y' to each side of the equation. 2x + 18y + -18y = 36 + -18y Combine like terms: 18y + -18y = 0 2x + 0 = 36 + -18y 2x = 36 + -18y Divide each side by '2'. x = 18 + -9y Simplifying x = 18 + -9y</span>
3 0
2 years ago
Shubham, Ashish, and Vinay participated in a long jump competition on their sports day. Shubham jumped 41 m 2 , while Ashish jum
9966 [12]

Answer:

Vinay jumped = 49m

Step-by-step explanation:

Given:

Shubham jumped = 41m

Ashish jumped = 3m less than Shubham

Vinay jumped = 11m more than Ashish

Find:

Length of Viney's jump

Computation:

Ashish jumped = Shubham jumped - 3m

Ashish jumped = 41m - 3m  

Ashish jumped = 38m

Vinay jumped = Ashish jumped + 11m

Vinay jumped = 38m + 11m

Vinay jumped = 49m

6 0
3 years ago
You measure 22 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.
lara31 [8.8K]

Answer:

Step-by-step explanation:

We want to determine a 90% confidence interval for the true population mean textbook weight.

Number of sample, n = 22

Mean, u = 64 ounces

Standard deviation, s = 5.1 ounces

For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

It becomes

64 ± 1.645 × 5.1/√22

= 64 ± 1.645 × 1.087

= 64 ± 1.788

The lower end of the confidence interval is 64 - 1.788 = 62.21 ounces

The upper end of the confidence interval is 64 + 1.788 = 65.79 ounces

Therefore, with 90% confidence interval, the true population mean textbook weight is between 62.21 ounces and 65.79 ounces

3 0
3 years ago
Use the dropdown menus to write an equation with infinitely many solutions.
nika2105 [10]

Answer:

4(2x + 3) - x = 7x + 12

Explanation:

That's what T4L/Edge said

8 0
2 years ago
SOMEONE PLEASE HELP this is worth 20 points
Ulleksa [173]

Answer:18432

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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