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3 years ago

5

Which pair of angles are adjacent angles?

1 answer:

nexus9112 [7]3 years ago

3 0

The correct answer is B. Why is it B? Adjacent angles share the same vertex and share a side. 1 and 3 shares the same vertex and a side so B is your answer.

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When finding a percent, what do you do? For example "what is 24% out of 45"

svetoff [14.1K]

We have an equation: ?/45= 24/100

Cross multiply:
100*? = 24*45
⇒ ?= 24*45/100= 10.8

24% out of 45 is 10.8~

8 0

4 years ago

A line passes through the point (–2, 7) and has a slope of –5. What is the value of a if the point (a, 2) is also on the line?

never [62]

(x1,y1) = (-2,7)
m = -5
(x,y) = (a,2)

Forming the equation,
(y-y1) = m(x-x1)
y - 7 = -5[x - (-2)]
y - 7 = -5x - 10
y + 5x = -3

Putting the values of (x,y) we get,
2 + 5a = -3
5a = -5
a = -1

8 0

4 years ago

Read 2 more answers

Help! I need to know if 7√3+2√9 is rational or irrational

Brums [2.3K]

Answer:

Irrational

Step-by-step explanation:

$7\sqrt{3}+2\sqrt{9}= \\\\7\sqrt{3}+2(3)= \\\\6+7\sqrt{3}$

Therefore, this is irrational. Hope this helps!

3 0

4 years ago

John randomly picks a number from 1 to 5 (both inclusive) and a letter from A to E (both inclusive). What is the probability tha

Greeley [361]

Answer:

$P(A \cap B) = P(A) *P(B) =\frac{1}{5} \frac{1}{5}= \frac{1}{25}$

So then the best option would be:

a. 1/25

Step-by-step explanation:

For this case we assume that the sample space for the numbers is :

$S_1= [A,B,C,D,E]$

And the sample space for the numbers is:

$S_2 =[1,2,3,4,5]$

Both sampling spaces with a size of 5.

We define the following events:

A="We select a 2 from the numbers"

B= "We select a E from the letters"

We can find the individual probabilities for each event like this:

$P(A)= \frac{1}{5}$

$P(B) = \frac{1}{5}$

And assuming independence we can find the probability required like this:

$P(A \cap B) = P(A) *P(B) =\frac{1}{5} \frac{1}{5}= \frac{1}{25}$

The last probability is the probability of obtain obtain a 2 AND an E

So then the best option would be:

a. 1/25

3 0

4 years ago

Read 2 more answers

Please help me!!!!!!

Alex Ar [27]

Answer:

$y=\frac{5}{8}x+20$

Step-by-step explanation:

I'll start by finding the slope of this line using the slope formula:

$\frac{70-20}{80-0}\\\frac{50}{80}\\\frac{5}{8}$

Just by looking at the graph I know that the y-intercept is 20, so now I can write the equation in slope-intercept form (y=mx+b):

$y=\frac{5}{8}x+20$

8 0

3 years ago