All categories

3 years ago

Help Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Kamila [148]3 years ago

3 0

Answer:

x = 80°

Step-by-step explanation:

Angle on a straight line = 180°

(x + 40)° + (x - 20)° = 180°

x + 40° + x - 20° = 180°

2x + 20° = 180°

2x = 180° - 20°

2x = 160°

x = 160°/2

x = 80°

Check:

(x + 40)° + (x - 20)° = 180°

(80° + 40°) + (80° - 20°) = 180°

120° + 60° = 180°

180° = 180°

You might be interested in

Jgvjjbhnbggghhhgghghhnhgh

seraphim [82]

Oh wow. Uhm. Add all the sides together and that's the surface area?

6 0

3 years ago

Read 2 more answers

The spinner below is spun once.

madam [21]

The probability that the spinner will land on 5 or 7 if the spinner is spun once is 1/4

<h3>How to determine the probability that the spinner will land on 5 or 7 if the spinner is spun once?</h3>

The sample space of the spinner is

S = {1, 2, 3, 4, 5, 6, 7, 8}

So, the sample size is

Size = 8

On the spinner, we have

n(5) = 1

n(7) = 1

The probability that the spinner will land on 5 or 7 if the spinner is spun once is calculated as:

P = P(5) + P(6)

This gives

P = 1/8 + 1/8

Evaluate

P =2/8

Simplify

P = 1/4

Hence, the probability that the spinner will land on 5 or 7 if the spinner is spun once is 1/4

Read more about probability at:

brainly.com/question/24756209

#SPJ1

8 0

2 years ago

An insurance company found that 9% of drivers were involved in a car accident last year. If seven drivers are randomly selected,

zzz [600]

Answer: 0.1061

Step-by-step explanation:

Given : An insurance company found that 9% of drivers were involved in a car accident last year.

Thus, the probability of drivers involved in car accident last year = 0.09

The formula of binomial distribution :-

$P(X=x)^nC_xp^x(1-p)^{n-x}$

If seven (n=7) drivers are randomly selected then , the probability that exactly two (x=2) of them were involved in a car accident last year is given by :-

$P(X=2)=^7C_2(0.09)^2(1-0.09)^{7-2}\\\\=\dfrac{7!}{2!5!}(0.09)^2(0.91)^{5}=0.106147867882\approx0.1061$

Hence, the required probability :-0.1061

3 0

3 years ago

An 8-ounce bag of candy is on sale for $1.12. What is the cost of 1 ounce of this candy?

Darya [45]

Answer:

0.14

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

PLEASE HELP I NEED THIS

mario62 [17]

Answer:

336/13 books in 48 months

Step-by-step explanation:

14 books : 26 months

first, find how many books he reads in one month (by dividing the given rate by the number of months)

14 books : 26 months

/26 /26

7/13 books : 1 month

now multiply by the number of months that this problem requires

7/13 books : 1 month

*48 *48

336/13 books : 48 months

4 0

3 years ago