2 years ago

Suppose temperature outside is dropping 3° each hour how much will the temperature change in eight hours?

Mathematics

2 answers:

Burka [1]2 years ago

8 0

Answer:

Step-by-step explanation:

Artyom0805 [142]2 years ago

7 0

The answer is 20 and I know

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If f(x)=x-1/3 and g(x)=3x+1, what is (f o g)(x)?

BlackZzzverrR [31]

Answer:

$3x+\frac{2}{3}$

Step-by-step explanation:

$f(x)=x-\frac{1}{3}$

$g(x)=3x+1$

Hence, $(f o g)(x)=f(3x+1)$

But, $f(3x+1)=(3x+1)-\frac{1}{3}$

Simplifying,

$f(3x+1)=3x+(1-\frac{1}{3})$

= $f(3x+1)=3x+(\frac{3-1}{3})$

= $f(3x+1)=3x+(\frac{2}{3})$

Hence, $(f o g)(x)=3x+(\frac{2}{3})$

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3 years ago

Kevin finished a race in 25.7 minutes juile finished the race 7 1/10 sooner than kevin finished it how many minutes did it take

Papessa [141]

Answer:

18.6 minutes

Step-by-step explanation:

subtract. im sorry if this is not right. im not smart

5 0

2 years ago

You need 3/4 yard of ribbon for one gift box. You have 3 yards of ribbon. How many gift boxes do you have ribbon for

Kazeer [188]

Answer:

Step-by-step explanation:

You take 3/4 + 3/4 and add it. That equals 1.5, so you take 3/4+ 3/4 again and you get 1.5 . So, 1.5+1.5 is 3. So that's how you get your total of 4 boxes.

7 0

3 years ago

Ibrahim cuts the grass for several of his

REY [17]

Answer:

5 gallons per week

Step-by-step explanation:

He uses 1.25 gallons per 5 hrs

How many times does he use a full tank in a week?

20/5 =<u> 4 times</u>

To find the total amount of fuel used take 1.25 times 4

1.25 * 4 = 5 gallons

3 0

3 years ago

One root of the quadratic equation x^2 − 2x + m = 0 is 9. If the other root is n, what is n−m?

mote1985 [20]

$9^2-2*9+m=0\\
\\
81-18+m=0\\
\\
m=-63$

$x^{2} -2x-63=0\\
\\
\Delta=(-2)^2-4.1.(-63)=4+252=256\\
\\
x=\frac{2 \pm 16}{2}\\
\\
x_1=\frac{18}{2}=9\\
\\
n=x_2=\frac{-14}{2}=-7\\
\\
n-n=-7-(-63)=-7+63=56$

4 0

3 years ago