All categories

3 years ago

The sum of the numbers j,k, and m is 115. The ratio of j to k is 2:7 and the ratio of k to m is 14:5. What is the value of k?

Mathematics

2 answers:

I am Lyosha [343]3 years ago

8 0

Answer:

I know how to help you.

Step-by-step explanation:

There is a web site called Khan Academy and it can help you understand how to solve it and it is completely free and you can use it as much as you want. There are videos that explain it to you and problems like help with practice I 100% reccomend it!

JulijaS [17]3 years ago

7 0

Answer:

f. 70

Step-by-step explanation:

I did this question in another brainly problem, but ok. So first k has to be able to divide by 14 and 7. Divided all the answers by 7 first. Then 14. Only 70 is able to divide by 7 and 14. Lastly check to see if it works. 2:7 = 20=70. 14:5 = 70:25. 20+70+25=115.

You might be interested in

At a local high school football game, 150 randomly selected people were surveyed about the location of the concession stand. 108

Nesterboy [21]

Answer:

Option B

The best point estimate of the proportion of people attending the game who believe that the concession stand should be closer to the stands is:

p = 0.72.

Step-by-step explanation:

We want to estimate the proportion of people who feel that the stand should be closer to the stands.

We have a sample of 150 people, of which 108 think that the stand should be closer to the stands.

A point estimator for the proportion p is $p\¨$ .

Where

$p\¨ = \frac{x}{n}$

Where n represents the size of the sample and represents the number of favorable cases.

We know that $n = 150$ and $x = 108$ .

Then we can estimate p by the estimator $p\¨$

$p\¨= \frac{108}{150}$

$p\¨ = 0.72$

4 0

3 years ago

Read 2 more answers

6 m 11m in area

faust18 [17]

66,80,35,24000
Those are the answers if I’m correct

6 0

3 years ago

Find the product (-4)(-9)(-2)

Elina [12.6K]

Answer:

-72

Step-by-step explanation:

(-4)(-9)(-2)=

36(-2)=

-72

5 0

3 years ago

Read 2 more answers

Which ordered pairs are solutions to the inequality 2x-y>1?

RideAnS [48]

Answer:

Any points in the shaded region including (2,-2) and (-3,-8)

Step-by-step explanation:

Convert the line into slope intercept form and graph it.

2x-y > 1 becomes -y>1-2x. Divide both sides by -1 and you get y<2x-1. Graph it with the shaded area on the right and a dashed line.

Any point which falls within the shaded red of the graph is a solution. No points on the line since it is not equal to (its dashed) are solutions. Check the location of your points to verify that they fall within this area.

(-3, -8) ---Yes

(-1, -3) ---No

(0, 5) --- No

(1, 6) --- No

(2, -2) ---Yes

8 0

3 years ago

I have this point: (-1,2) and my slope is undefined. How would I write my equation in point-slope form: y - y^1 = m (x -x^1)? Th

tiny-mole [99]

Answer:

x = -1

Step-by-step explanation:

Given the point, (-1, 2), and that the slope is undefined.

The standard linear equation of vertical lines is x = a, where the x-intercept is (a, 0), and the slope is undefined because all points on the line have the same x-coordinate. Attempting to solve for the slope of a vertical line using the slope formula, m = (y₂ - y₁)/(x₂ - x₁), will result in a mathematical operation of division by zero (which is an undefined operation).

Since the slope is undefined, then it is not possible to create a linear equation in either the slope-intercept form, or point-slope form.

Therefore, the equation of a vertical line given the point, (-1, 2) is x = -1.

7 0

2 years ago