All categories

3 years ago

What is 9 - (-8) = 20 and how did you get that answer?

Mathematics

2 answers:

mash [69]3 years ago

7 0

Answer:

9 -( -8)= 9 + 8= 17 not 20

17 is the solution

Colt1911 [192]3 years ago

4 0

Answer: No solution

Step-by-step explanation:

9-(-8)=20 given

9+8=20 the two negatives cancel out, making the eight positive

17=20 this statement is not correct, so the answer is no solution

no solution

I'm not sure if there was supposed to be a variable in there somewhere, but I did my best to explain. Hope this helps!

You might be interested in

To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligibl

navik [9.2K]

Answer:

c) A matched-pairs t-interval for a population mean difference

Step-by-step explanation:

Matched-Pairs t-Test. A matched-pairs t-test is used to test whether there is a significant mean difference between two sets of paired data.

6 0

3 years ago

A fair coin is flipped three times. Events A and B are defined as: A: there are at least two consecutive heads somewhere in the

Vaselesa [24]

Answer:

2 / 7

Step-by-step explanation:

Coin flipped 3 times has following outcomes, of heads 'H' & Tails 'T'

HHH , TTT , HTT, THT , TTH , THH , HTH , HHT = total outcomes

P (A) = 2 consecutive heads , P (B) = atleast one tail

P (A) = 2 outcomes ( HHH , HHT , THH ) / total 8 outcomes = 3 / 8

P (B) = 7 outcomes (all except HHH) / total 8 outcomes = 7 / 8

P (A | B) = P ( A ∩ B ) / P (B)

P ( A ∩ B ) = P ( 2 consecutive heads & atleast one tail) / Total outcomes = 2 outcomes ( HHT , THH ) / total 8 outcomes = 2 / 8

So, P (A | B) = ( 2 / 8 ) / ( 7 / 8 ) = 2 / 7

4 0

2 years ago

Equation for the points (3,8) (2,6) on slope

Irina18 [472]

$\frac{8-6}{3-2} = \frac{2}{1}=4$

The slope is 2

y=2x + b

Plug in a point to solve for b
8 = 2(3) + b

8 = 6 + b
b = 2

The equation is y = 2x + 2

7 0

3 years ago

Read 2 more answers

What's the converse of the statement "if it is snowing, then it is my birthday"

Drupady [299]

The converse would be "If it is my birthday, then it is snowing."

5 0

3 years ago

PLS HELP IF YOU WANT

Nastasia [14]

Answer:45 * t = 2.5 * (1-t)...the equation will have one solution.

Step-by-step explanation:

For this case, the first thing you should know is:

d: v * t

Where,

d: distance

v: speed

t: time

To go to school by bus we have:

d = 45 * t

To return from school we have:

d = 2.5 * (1-t)

how the distance is the same:45 * t = 2.5 * (1-t)

3 0

2 years ago

Read 2 more answers