2 years ago

The mean temperature for the first 4 days in January was -7°C.

Mathematics

1 answer:

Mkey [24]2 years ago

3 0

Answer:

3ºC

Step-by-step explanation:

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Please help me! And please no scam answers

Yuri [45]

Answer:

Average rate of change: $-3$

Step-by-step explanation:

Remember:

The average rate of change of a function over an interval $[a,b]$ is $\frac{f(b)-f(a)}{b-a}$

Given:

$[a,b]=[1,7]$

$f(b)=f(7)$

$f(a)=f(1)$

Calculation:

$f(b)=f(7)=-(7)^2+5(7)+14=-49+35+14=-49+49=0$

$f(a)=f(1)=-(1)^2+5(1)+14=-1+5+14=4+14=18$

$\frac{f(b)-f(a)}{b-a}=\frac{0-18}{7-1}=\frac{-18}{6}=-3$

Therefore, the average rate of change of the function $g(x)=-x^2+5x+14$ over the interval $1\leq x\leq7$ is $-3$ .

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2 years ago

The oil painting is 90% off. it is now $17. what was the original price?

lutik1710 [3]

Answer:

Let us assume that the original purse is $100. The price after the first reduction is $80. After the second reduction the price is now $56.

Step-by-step explanation:

hope this helps

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2 years ago

It takes 10 people 15 hours to prepare the gym for the school dance. How many hours would it take 12 people to prepare the gym?

valentinak56 [21]

Answer

18 hours

Step-by-step explanation:

if 10 people spend 15 hours

one person spend 15/10=1.5

so 1.5 × 12=18hours

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2 years ago

Heather's class took a field trip to the science museum. They left school at 7:30 A.M. It took

vodka [1.7K]

Answer:

10:30 A.M

Step-by-step explanation:

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2 years ago

Helpppp plzzzzzzzzzzzzz I know it’s supplementary but I can’t find the value of X

Black_prince [1.1K]

Answer:

x = 18

Step-by-step explanation:

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3 years ago

Read 2 more answers