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harkovskaia [24]

2 years ago

8

The average teenager spends 2.9 hours a day watching television. How much time do they spend each week watching television?

1 answer:

Bumek [7]2 years ago

8 0

Answer:They spend 8 hours

Step-by-step explanation:2.9 times 3

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The year the Greek city of Helike disappeared is -1/5 times the year the US civil war ended. Let w represent the year the war en

Lostsunrise [7]

Answer:

ok so

-1/5x=w

w=1865

so -1/5x=1865

x=-9325

Hope This Helps!!!

5 0

2 years ago

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If a circle is cut from a square piece of plywood, how much plywood would be left over? Use 3.14 for pi

Elanso [62]

$20^{2}$ -3.14* $10^{2}$ = 400 - 314 = 86;

7 0

3 years ago

Subtract 4 1/3 -8 enter your answer as a simplified mixed number by filling in the boxes

harina [27]

-3 2/3 I just changed the mixed number into a improper fraction

6 0

2 years ago

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Erika calculated that she would spend $115 on school supplies this year. She actually spent $82.50 on school supplies. What is E

DerKrebs [107]

The equation to find percent error is:
percent error=(experimental-theoretical)/theoretical *100
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Hope this helps!!

6 0

2 years ago

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In the system of equations, r and s are constants. If the system has infinitely many solutions, what is the value of rs?

exis [7]

Answer: B) -48

Step-by-step explanation:

If the system of two linear equations $a_1x+b_1y=c_1\ \&\ a_2+b_2y=c_2$ has infinitely many solutions , then

$\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}=k$

For the given system of linear equations : $rx-sy=26\\4x+3y=13$

We , will have

$\dfrac{r}{4}=\dfrac{-s}{3}=\dfrac{26}{13}=2\\\\\Rightarrow\ r= 4\times2=8\ \ \&\ \ s=2\times-3=-6$

The value of $rs=(8)\times-6=-48$

Hence, the value of rs is -48.

Thus , the correct option is B) -48.

6 0

3 years ago