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3 years ago

Which expression is equivalent to 3y?

Mathematics

1 answer:

Yakvenalex [24]3 years ago

5 0

Answer:

Ooy+(+12)-2

Step-by-step explanation:

Cause the dimoneter is the 12 a pelagic

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11. angle MLN and angle JLK are complementary, m angle MLN=7x-1 and m angle JLK=4x+3 . a. Solve for x b. Find m angle MLN and m

Natali [406]

a. Solve for x

Since angle MLN and angle JKL are complementary, the value of x = 8

Since angle MLN and angle JKL are complementary, their sum equal 90°.

Since angle MLN = 7x - 1 and angle JKL = 4x + 3, we have that

7x - 1 + 4x + 3 = 90

Collecting like terms, we have

7x + 4x - 1 + 3 = 90

Simplifying, we have

11x + 2 = 90

Subtracting 2 from both sides, we have

11x = 90 - 2

11x = 88

Dividing through by 11, we have

x = 88/11

x = 8

So, Since angle MLN and angle JKL are complementary, the value of x = 8

b. Find m angle MLN and m angle JKL .

Since angle MLN=7x-1 and angle JLK=4x+3 thus, angle MLN = 55° and angle JKL = 35°

Since angle MLN = 7x - 1 and x = 8, we have

angle MLN = 7x - 1

angle MLN = 7(8) - 1

angle MLN = 56 - 1

angle MLN = 55°

Since angle JKL = 4x + 3 and x = 8, we have

angle JKL = 4x + 3

angle JKL = 4(8) + 3

angle JKL = 32 + 3

angle JKL = 35°

So, Since angle MLN=7x-1 and angle JLK=4x+3 thus, angle MLN = 55° and angle JKL = 35°

Learn more about complementary angles:

brainly.com/question/13389583

4 0

2 years ago

How can you determine the slope and the y- intercept of a line from a graph?

Molodets [167]

Slope: Take two points from the graph, and do y-y, over x-x.

for ex. (1,2) and (2,4) do 4-2 over 2-1. your slope is 2/1= 2

y-intercept: find the one point on the graph that is exactly on the y-axis.

for ex. (4,0)= your y-intercept is 4

6 0

3 years ago

tudents are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. There are

AlladinOne [14]

In this question, they gave you the system of equations. You just need to use the two of them.

We want to find the m or the number of the multiple-choice questions. So we need to turn our last equation in the form of 'm's by translating the 'f's into 'm's.

$m + f = 15$
$f = 15 - m$

If we know the m form of f, we can convert the second equation and find the answer: $3m + 5f = 51$

Plug in the m value of f: $3m + 5(15 - m) = 51$

Distribute the 5: $3m + 75 - 5m = 51$

Subtract -75 from both sides: $3m - 5m= 51 - 75$

Combine like terms: $- 2m = - 24$

Divide both sides by -2: $m = 12$

So, we learned that the number of the multiple-choice questions is 12.

6 0

3 years ago

An item was bought for £50. It was sold for £32. What was the percentage loss?

kumpel [21]

Answer:

36% loss

Step-by-step explanation:

To calculate percentage loss

$\frac{loss}{original}$ × 100%

loss = £50 - £32 = £18, then

percentage loss = $\frac{18}{50}$ × 100% = 18 × 2 % = 36%

5 0

3 years ago

Read 2 more answers

Find the equation of the line perpendicular to 4x-y=2 and contains the point (5,-2)

lawyer [7]

Answer:

y = -1/4x - 3/4

Step-by-step explanation:

First, you need to change the equation into slope intercept form. Subtract 4x from both sides to get -y= -4x + 2. Divide all parts by -1 to get y=4x-2. One thing you should know when finding the slope of a perpendicular line is that the slope is the opposite reciprocal. So, the slope is -1/4. This is your current equation: y= -1/4x + b. Plug the coordinate into the equation; it should look like this: -2= -1/4(5) + b. Multiply -1/4 by 5 to get -5/4. This is what you should have now: -2 = -5/4 + b. Add 5/4 to both sides to get -3/4 = b. Go back to your other equation and plug in -3/4 to b. This is your final equation: y = -1/4x - 3/4. Hope this helped!

5 0

3 years ago