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3 years ago

8

I need help please???

2 answers:

rodikova [14]3 years ago

7 0

The answer is 25, use pemdas if help

stellarik [79]3 years ago

7 0

The answer to this expression is 25 .

Explaned:

First you have to multiply 40 and 2

Second you have to multiply 5 and 11

Last subtract 80 and 55

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Jada can read 3/5 of a book in 1/4 of an hour. How long would it take her to read one whole

BaLLatris [955]

Answer:

25 Minutes

Step-by-step explanation:

Well, 1/4 of an hour is obviously 15 minutes. So if she read 3/5 of the book in 15 minutes, you have to find how long it took her to read 1/5 of the book. If 15 minutes is 3/5, then 15/3 is 5, which is the time it took to read 1/5 of the book. You add 10 to 15 and you get 25. I hope this helps!

4 0

3 years ago

What is the value of x?

stiv31 [10]

2x +6 = 32

2x = 32-6

2x = 26

x = 26/2

x = 13

7 0

4 years ago

Read 2 more answers

The points A(-3, 2) and B(1,4) are vertices of an isosceles triangle ABC, where angle B = 90°

almond37 [142]

Answer:

Length of AB = 4.4721

Equation of line BC: y = -2x + 6

Step-by-step explanation:

To find the length of the line AB, we just need to find the distance between the points A and B.

We can find distance with the equation:

$distance = \sqrt{(x_A - x_B)^2 + (y_A - y_B)^2}$

$distance = \sqrt{(-3 - 1)^2 + (2 - 4)^2}$

$distance = 4.4721$

To find the equation of the line BC, first let's find the slope of the line AB.

This slope is given by:

$m_{AB} = \frac{ y_A - y_B }{ x_A - x_B }$

$m_{AB} = \frac{ 2 - 4 }{ -3 - 1} = \frac{1}{2}$

The line AB is perpendicular to the line BC (because mB = 90°), so the slope of line BC is:

$m_{BC} = -\frac{1}{m_{AB}} = -2$

so the line BC is:

$y = -2x + b$

To find the value of b, we can use the point B (1,4):

$4 = -2 + b$

$b = 6$

So we have:

$y = -2x + 6$

4 0

4 years ago

Find x if L is between N and M, and NL = (6x - 5), LM = (2x + 3), and NM = (3x+13)?

anastassius [24]

Answer:

x = 3

Step-by-step explanation:

Here, we want to find the value of x

By mathematical convention;

NM = NL + LM

Now, substitute individual values

3x + 13 = (6x-5) + (2x + 3)

3x + 13 = 6x-5 + 2x + 3

3x + 13 = 8x -2

Collect like terms

8x -3x = 13 + 2

5x = 15

x = 15/5

x = 3

3 0

3 years ago

I need help with 6, 7 and 8 please!

hichkok12 [17]

6. 150 degrees
7. 70 degrees
8. 100 degrees

6 0

3 years ago