Mathematics High School

20 POINTS

On the news yesterday, the weather forecaster’s rainfall prediction was 20% off. If 2.5 inches of rain actually fell today, what are the two rainfall predictions that could have been made during the weather forecast?

Giving brainliest to the BEST EXPLAINED answer. All answers that are irrelevant to the question will be reported and removed.

Middle School Math
REPOST AS THE OTHER ONE GOT SNIPED

Answers

Answer 1
Answer: 2 inches, 3 inches, or 3.125 and 2.083


Explanations:
The simplest way is to take 20% of the 2.5 inches and go that much above & below 2.5 inches.

2.5 x 20% = 2.5 x 0.20 = 0.5

So 2.5 - 0.5 = 2 inches was predicted
And 2.5 + 0.5 = 3 inches was predicted.

The more complicated way is to see number + 20% of that number = 2.5, and what number - 20% = 2.5.

Which solution sounds more like what you’re doing in class right now?

If it’s the more complicated way:

0.8x = 2.5 (80% of the predicted rain value equals 2.5)
x = 3.125 inches was predicted

1.2x = 2.5 (120% of the predicted rain value equals 2.5)
x = 2.083 inches was predicted

Sorry, this is probably confusing. Let me know what questions you have.

Related Questions

Hayley loves to shop for make up. She went to her favorite store and bought eye shadow for $5.99, 2 bottles of nailpolish for $7.50 each and a tube of mascara for $8.50. She had a 20% discount coupon. Create and solve an equation to determine how much was her purchase after the discount was applied.

Answers

17.59 8.50+7.50+5.99=21.99 21.99 x .8 = 17.59

Andre is running in an 80-meter hurdle race. There are 8 equally-spaced hurdles on the race track. The first hurdle is 12 meters from the start line and the last hurdle is 15.5 meters from the finish line. Calculate how far apart the hurdles are from one another in decimal form?

Answers

Answer: 32 meters

Step-by-step explanation:

Seven tubs of yogurt cost $28. How much does one tub of yogurt cost?

Answers

Answer:

4

Step-by-step explanation:

3 dollars each I believe

LAST QUESTION PLS HELP ME

Answers

The third one....
Sam amount increase each day by 1.75 so 1.75x and when you plug in 9....
1.75(9)=15.75

Find the equation of the line
perpendicular to y = 6x - 2 that
also intersects the point (6, -2).
y=mx+

Answers

Answer:

your answer will be y= -1/6x+(-1)

Step-by-step explanation:

I hope this helps ^_^

Solve the linear equation 2(3x + 2) = 2x – 1 + x. State the property that justifies your first step and why you
chose it.

Answers

Answer:

x = -5/3

Step-by-step explanation:

2(3x + 2) = 2x - 1 + x

2 × 3x + 2 × 2 = 2x + x - 1

6x + 4 = 3x - 1

3x = -5

x = -5/3

Please help
Write an equation for the situation: Karen wrote a check for $72. She subtractded the amount from her checkings account and found that the balance was $383 after writing this check. What was her balance before writing the check?
10 points

Answers

Answer:

She had $455 before

Her balance was $455 before writing the check

If you are being paid $55 for a days work which is an 8 hour shift how much would you get paid if you only worked 6 hours?

Answers

Answer:

You would get paid $41.25 if you only worked 6 hours.

Step-by-step explanation:

In order to find the answer, first you have to find the amount you are paid per hour by dividing the amount paid per day by 8 hours:

$55/8=$6.875

Then, you have to multiply the amount per hour for 6 to determine the amount you would get paid if you only worked 6 hours:

$6.875*6=$41.25

According to this, the answer is that you would get paid $41.25 if you only worked 6 hours.

Jordan was laying on the ground and enjoying the shade but now the sun is shining on her. She knows she is 12 yards away from the building that was shading the sun and that the building is 10 yards high. At what angle does the sunlight hit the ground? Write only the number rounded to the nearest unit.

Answers

39.8°

Step-by-step explanation:

theta = tan^-1(10/12)

help me with is please the question is in the picture

Answers

Okay so we have

$1.60 x .10 = .16

1.60 - .16 = $1.44

so

1.44 x 4 = $5.76

1.44 / 2 = .72

$5.76 + .72 = $6.48

so your answer is $6.48 [B]

Answer: the answer is b or 6.48

Step-by-step explanation:

Find the angle which is equal to its supplement. ​

Answers

Answer:

the angle which is equal to its supplement is 90 degree

model 4 lesson 4 lesson 8 homework 4th grade

Answers

Answer:

Can you put the question please, so we could answer it

Step-by-step explanation:

A DVD has a diameter of 14 centimeters. What is the area of the DVD? Round your answer to the nearest
hundredth. Use 3.14 for it.
The area of the DVD is about
1 cm?

Answers

The answer would be 153.94cm
Formula for the area of a circle is A=pi*r^2
Pi=3.14
R=14/2=7
A=3.14*7^2
A=153.94cm

Find the area of a circle with a radius of 2.
Either enter an exact answer in terms of it or use 3.14 for IT and enter your answer as a decimal.
units2

Answers

Do you do 3.14×3 squared so like 3.14(3)^2
it’s 1 the radius is one

please answer correctly and quickly all question please please please

Answers

5. Part A- X is less than 54
Part B- x is greater than or equal to 13
9. 0 is the answer
10. J=5 and draw a line going right from the number 2 with a filled in circle

Can you help me with this question please

Answers

Answer:

the answer is 9^8

Step-by-step explanation:

9^3 * 9^5 = 9^ 3 + 5 = 9^8

Please helpim beging

Answers

Answer: D
Experimental probability = favorable outcomes over total outcomes

Answer:

D, 2/53

Step-by-step explanation:

Brayden buys 53 bottles so that is the denominator of the probability fraction. Of those 53 bottles, 2 have a winning cap. So the answer is 2 out of 53 or how we would write it in Maths 2/53.

Hope that helped.

Find the output when the input is -2: y = -3x -5

Answers

The correct answer is 1

Find the measure
of the angle indicated.
Your answer

Answers

Answer:

44°

Step-by-step explanation:

This is an inscribed angle and its measure is equal to the measure of arc it sees (minor arc BC in this case)

88 ÷ 2 = 44°

when a grizzly bear hibernates its heart rate drops to 10 beats per minute, which is 20% of its normal value.

question: what is a grizzly bear's normal heart rate when not hibernating?

__________ beats per minute.

Answers

Answer:

10 is 20% of 50.

50 beats per minute

What does x equal when y=5

Answers

I think it’s uh I think it’s uh carrot yeah I think it’s a carrot

Would anyone like a brainliest?
Or whoever guesses my favorite season first gets it.

Answers

Answer:

Winter,summer and fall

F(t) = 212 - 6t
What is the value of t when F(t) = 140​

Answers

Answer: -628

Step-by-step explanation:

F(140) = 212 - 6(140)

F(140) = 212 - 840

F(140) = -628

What is the answer.. to this !

Answers

Answer:

A = 3.14

Step-by-step explanation:

A = π[tex]r^{2}[/tex]

A = 3.14 x [tex]1^{2}[/tex]

(diameter = 2)

(remember, radius is half of the diameter)

(radius = 1)

A = 3.14

PLEASE HELP!! LOOK AT PHOTO

Answers

Answer: 20.672

Step-by-step explanation: There you go

20.672 is the correct answer!I can't really explain it without paper but you could have used a calculator. Was this a joke or are you serious? lm-aoPlease let me know if I am wrong.

Help Plz
Will mark brainliest

Answers

Answer:

False, true, false, true

Step-by-step explanation:

Sin T = 7/25

Cos T = 24/25

Sin C = 24/25

Cos C = 7/25

9.
Giselle pays $210 in advance on her account at the athletic club. Each time she uses the club, $15 is deducted from the account. Model the situation with a linear function.


b = 195 – 15x

b = 210 + 15x

b = 195 + 15x

b = 210 – 15x

Answers

B=195+15x is the answer eekeirrnrnejr

Pls help will mark brainliest

Answers

Answer:

750

Step-by-step explanation:

Savannah has $92,637 in a savings account that earns 9% annually. The interest is not compounded. How much interest will she earn in 5 years​

Answers

Answer:

$41686.65

Step-by-step explanation:

Given data

Principal = $92,637

Rate= 9%

Time= 5 years

The simple interest expression is given as

SI= PRT/100

Substitute

SI= 92637*9*5/100

SI= 4168665/100

SI=$41686.65

Hence the interest is $41686.65

1) Which type of increasing function eventually exceeds all other
increasing functions?
A) linear
B) exponential
polynomial
D) quadratic

Answers

Answer:

Exponential

Step-by-step explanation:

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