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prisoha [69]
3 years ago
5

The temperature of a city doubles during the day, and then decreases by 14.1ºF after the sun goes down. The temperature at the e

nd of the day is −1.7°F. What was the temperature at the beginning of the day? Enter your answer in the box.
Mathematics
2 answers:
Gennadij [26K]3 years ago
8 0

Answer:

Yep the where correct

Step-by-step explanation:

Minchanka [31]3 years ago
7 0

The temperature at the beginning of the day was 6.2°F

Let x represent the temperature at the beginning of the day.

Since, the temperature of a city doubles during the day, and then decreases by 14.1ºF after the sun goes down, hence:

Temperature at end of day = 2x - 14.1

Also, the temperature at the end of the day is −1.7°F, hence:

2x - 14.1 = -1.7

2x = 12.4

x = 6.2°F

The temperature at the beginning of the day was 6.2°F

Find out more at: brainly.com/question/21105092

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7th grade math please help me will give brainliest
Alecsey [184]

Answer: 67.27

Step-by-step explanation:

7.1 x 7.1 for the square = 50.41

7.1 divided by 2 = 3.55

3.55 x 4.75= 16.86

Normally here you would divide by 2, but you don’t need two because there is 2 triangles that are the same

Add the 50.41 and the 16.86 and you have your answer!

8 0
2 years ago
Read 2 more answers
Four times the number of mangoes Mark picked equals the number Jordan picked for a week. If Jordan picked 20 mangoes each day, h
maksim [4K]

Answer:

5

Step-by-step explanation:

The equation looks like 4x=20
Divide each side by 4 to get x=5
Thus x+5

6 0
2 years ago
When I count as a principal of $1000 and earns 4% simple interest per year and other account as a principal $1000 and earns 4% i
OLga [1]

Answer: the account that earned compound interest has the greater balance at the end of four years.

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the amount invested.

P represents the principal or amount invested.

R represents interest rate

T represents the duration of the investment in years.

From the information given,

P = 1000

R = 4%

T = 4 years

I = (1000 × 4 × 4)/100 = 160

Total amount earned is

1000 + 160 = $1160

The formula for determining compound interest is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = 1000

r = 4% = 4/100 = 0.04

n = 1 because it was compounded once in a year.

t = 4 years

Therefore,.

A = 1000(1+0.04/1)^1 × 4

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3 0
3 years ago
He mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle. Analysis of 20 bottles indicates a sa
mezya [45]

Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg

Step-by-step explanation:

Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.

Let \mu be the population mean .

We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.

i.e. Null hypothesis :H_0:\mu=140

Alternative hypothesis for two tail hypothesis has sign (≠).

i.e. Alternative hypothesis : H_1 : \mu\neq140

∴ The hypotheses for a two-tailed test of the claimed potassium content:

H0: μ = 140 mg vs. H1: μ ≠ 140 mg

3 0
3 years ago
What is the solution to the system of equations
BlackZzzverrR [31]

Hello,

Please, see the attaced file.

Thanks.

3 0
3 years ago
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