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4 years ago

The temperature dropped 18°F in 3 hours. The final temperature is -7°F. What was the

Mathematics

1 answer:

9966 [12]4 years ago

7 0

Answer:

11 °F

Step-by-step explanation:

The problem explains the last temperature is -7 °F and in the process the temperature dropped 18 °F, we can then make a simple equation for the starting temperature

ST-18°F=FT

ST: starting temperature

FT: final temperature

ST-18=-7

ST=-7+18=11 °F

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6 - 2/3 (x+5) = 4x solve algebraically for the exact value of x

luda_lava [24]

Answer:

x = 2

Step-by-step explanation:

1 - Rewrite

6 - 2/3 (x+5) = 4x

2 - Distribute

6 - 2/3x + 10/3 = 4x

3 - Combine like terms and get x alone

6 10/3 - 2/3x = 4x

+2/3x +2/3x

6 10/3 = 4 2/3x

------------------------------- Convert to decimals

6.3333333333.... = 4.333...x

-------------------------------- Divide both sides by 4.33...x

2 = x

Hope this helps :)

3 0

3 years ago

Choose the correct solution to 2x² - 7x = -5

anyanavicka [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

Car travels 360 miles on 18 gallons of gas. Write the unit rate.

mars1129 [50]

360/18=20

So, your answer is 20 unit rate.

Hope this will help you!

5 0

4 years ago

The meat department of a local supermarket packages ground beef using meat trays of two sizes: 1 designed to hold 1 lb of meet a

r-ruslan [8.4K]

Answer:

c) 0.932

99% confidence interval for average weights of all packages sold in small meat trays.

(0.932 ,1.071)

Step-by-step explanation:

Explanation:-

Given random sample of 35 packages in small meat trays produced weight with an average of 1.01 lbs. and standard deviation of 0.18 lbs.

size of the sample 'n' = 35

mean of the sample x⁻= 1.01lbs

standard deviation of the sample 'S' = 0.18lbs

The 99% confidence intervals are given by

$(x^{-} - t_{\alpha } \frac{S}{\sqrt{n} } , x^{-} +t_{\alpha } \frac{S}{\sqrt{n} } )$

The degrees of freedom γ=n-1 =35-1=34

tₐ = 2.0322

99% confidence interval for average weights of all packages sold in small meat trays

$(1.01 - 2.0322 \frac{0.18}{\sqrt{35} } , 1.01+2.0322 \frac{0.18}{\sqrt{35} } )$

( 1.01 - 0.06183 , 1.01+0.06183)

(0.932 ,1.071)

Final answer:-

99% confidence interval for average weights of all packages sold in small meat trays.

(0.932 ,1.071)

5 0

3 years ago

Round 7996.33774627 to the nearest ten.

Katyanochek1 [597]

Answer:7996.33774627 rounded to the nearest ten is

Step-by-step explanation:8,000, hope this helps

6 0

3 years ago

Read 2 more answers