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3 years ago

What is the answer to 1 4/5 x 2 1/4

Mathematics

1 answer:

hodyreva [135]3 years ago

7 0

Answer:

3 6/25

Step-by-step explanation:

Make the mixed fractions improper fractions and multiply them together. After that make the multiplied improper fraction a mixed fraction (answer in drawings)

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Work out the size of angle x. х 65° 45 °

zvonat [6]

Answer:

Step-by-step explanation:

(im presuming this is a triangle)

65 + 45 = 110°

angles in a triangle add up to 180°

180 - 110 = 70°

x = 70°

8 0

3 years ago

Solve this equation: 2x = 18 X=

Anna007 [38]

Answer: x = 9

Step-by-step explanation:

2x = 18

2/2 18/2

x = 9

(pls mark me the brainliest)

8 0

3 years ago

Read 2 more answers

The output y and input x of a device are related by y = x + 1.4x3 . (a) Find the values of the output for steady-state operation

erma4kov [3.2K]

Answer:

a) $y(1) = 2.4$ , $y(2) = 13.2$ , b) $y(x) = 2.4 + 5.2\cdot (x-1)$ , $y(1) = 2.4$ , $y(2) = 7.6$

Step-by-step explanation:

a) The values of the output for steady-state operation are:

$y(1) = 1 + 1.4\cdot (1)^{3}$

$y(1) = 2.4$

$y(2) = 2 + 1.4\cdot (2)^{3}$

$y(2) = 13.2$

b) The formula for linearization is:

$y(x) = y(1) +\frac{dy}{dx}|_{x = 1} \cdot (x-1)$

The first derivative of the formula evaluated at x = 1 is:

$\frac{dy}{dx}|_{x=1} = 1 + 4.2\cdot (1)^{2}$

$\frac{dy}{dx}|_{x=1} = 5.2$

The linearized model is:

$y(x) = 2.4 + 5.2\cdot (x-1)$

The output at x = 2 is presented below:

$y(2) = 2.4 + 5.2\cdot (2-1)$

$y(2) = 7.6$

Linearized model offers reasonable approximations for small intervals.

5 0

3 years ago

At a college there are 120 freshmen, 90 sophomores, 110 juniors, and 80 seniors. A school administrator selects a random sample

murzikaleks [220]

Answer:

Stratified sampling

Step-by-step explanation:

The is a type of sampling in which the population of interest is divided into subpopulations and then each subpopulation is randomly sampled.

In this case study, instead of just doing a random sampling of all students, the research divided the population of all students into subpopulations which includes freshmen, sophomores, juniors and seniors and then she makes a random sampling of each of these subpopulations.

4 0

3 years ago

NEED HELP WITH THIS NEED URGENT PLEASE!!!!! PLEASE ILL MRK BRAINLIEST PLEASE FAST URGENT PLZ!

Schach [20]

Answer:

Table D. shows the proportional relationship.

You would plot those points on their corresponding part on the graph, like (2,1), (6,3), (8,4), and (10,5). The first number being the x value and the second number being the y value. Remember, x goes from side to side, and y goes up and down.

4 0

3 years ago