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3 years ago

X + 8 = -15 What does x= ???

Mathematics

1 answer:

lawyer [7]3 years ago

6 0

Answer: x=−23

Step-by-step explanation:

Let's solve your equation step-by-step.

x+8=−15

Step 1: Subtract 8 from both sides.

x+8−8=−15−8

x=−23

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A local hamburger shop sold a combined total of 522 hamburgers and cheeseburgers on Friday. There were 72 more cheeseburgers sol

max2010maxim [7]

Answer:

225 burgers

Step-by-step explanation:

522-72=450

450/2=225

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3 years ago

A rectangular poster is 3 times as long as it is wide. A rectangular banner is 5 times a long as it is wide. Both the banner and

deff fn [24]

Answer:

The answer to your question is

a) Poster width = 3 in

lenght = 9 in

b) banner

width = 2 in

lenght = 10 in

Step-by-step explanation:

a) For the poster

width = x

lenght = 3x

Perimeter of a rectangle = 2base + 2 height

= 2(x) + 2(3x) = 24

2x + 6x = 24

8x = 24

x = 24/8

x = 3

width = 3 in

lenght = 3(3) = 9 in

b) For the banner

width = y

lenght = 5y

Perimeter of a banner = 2 base + 2 height

2 (y) + 2(5y) = 24

2y + 10y = 24

12y = 24

y = 24/12

y = 2

width = 2 in

lenght = 5(2) = 10 in

7 0

2 years ago

Can you answer number 3, 4, and 5?<br> (Whoever is right gets brainliest)

valkas [14]

Answer:

3: 200, 200

4:800

5:400

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

How many numbers go into 49

labwork [276]

49 is a composite number, which means it is divisible by 1, 7, and 49. Hope this helps! :)

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3 years ago

Read 2 more answers

A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu

Salsk061 [2.6K]

Answer:

The value is $P(A | W) = 0.941$

Step-by-step explanation:

From the question we are told that

The probability that the student knows the answer to the question is $P(A) = 0.8$

The probability that that the student will guess is $P(G) = 0.2$

The probability that that the student get the correct answer given that the student guessed is $P(W /G) = 0.25$

Here W denotes that the student gets the correct answer

Generally it a certain fact that if the student knows the answer he would get it correctly

So the probability the the student got answer given that he knows it is

$P(W | A) = 1$

Generally from Bayes theorem we can mathematically evaluate the probability that the student knows the answer given that he got it correctly as follows

$P(A | W) = \frac{ P(A) * P(W | A )}{ P(A) * P(W | A) + P(G) * P(W| G)}$

=> $P(A | W) = \frac{ 0.8 * 1}{ 0.8 * 1+ 0.2 * 0.25}$

=> $P(A | W) = 0.941$

4 0

3 years ago