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Schach [20]
3 years ago
9

Jean saw a basic computer for $695.00 and a printer for $95.00. In order to buy the computer, Jean would work each week for four

months. He earned $157.00 in May, $210.00 in June, $377.00 in July and $145.00 in August. Has Jean earned enough money to buy the computer and printer? If so, how much will he have left over after the purchase?
Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer:

YES

Step-by-step explanation:

$157+$210+$377+$145=$889

$695+$95=$790

Leftover

$889-$790 =$99

he would have $99 leftover

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What quadratic formula do I need to use to solve 3x(x+6)=-1
timofeeve [1]

Answer:

\Large  \boxed{x_1=\frac{9+\sqrt{51} }{3}  \ \  ;  \ \ x_2=\frac{9-\sqrt{51} }{3} }

Step-by-step explanation:

\displaystyle \Large \boldsymbol{} 3x(x+6)=-10  \\\\3x^2+18x=-10 \\\\3x^2+18x+10=0 \\\\D=324-120=204 \\\\ x_{1;2}=\frac{18\pm2\sqrt{51} }{6} =\frac{9\pm\sqrt{51} }{3}

3 0
3 years ago
A 14 inch pizza (diameter is 14) was cut in to 8 pieces. What is the angle measure of each slice? *
Luda [366]

Answer:

The angle for each slice is 45 degrees.

Step-by-step explanation:

In order to calculate the angle of each slice, we first need to calculate the total area of the pizza, because we will use that to find the area of each slice and as a result it's angle. To calculate the area of the pizza we must use:

pizza area = pi*r²

r = d / 2 = 14 /2 = 7 inches

pizza area = pi*(7)² = 153.86 square inches

Since the pizza was divided in 8 pieces, the area of each piece is given by the area of the pizza divided by the number of slices. We have:

slice area = pizza area  / 8 = 153.86 / 8 =19.2325 square inches

Each slice is a circle sector, therefore it's area is given by:

slice area = (angle*pi*r²)/360

Therefore we can solve for angle:

19.2325 = (angle*pi*7²)/360

angle*pi*49 = 6923.7

angle = 6923.7 / pi*49 = 45 degrees

The angle for each slice is 45 degrees.

4 0
3 years ago
The mean weight of a group of 7 girls is 58kg<br> work out their total weight with the calculation
dezoksy [38]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
What is 19/25 as decimal
Radda [10]
Well first we need to find how we can turn 25 into 100 
Well one way would be to multiply by 4 
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Since we multiplied the bottom number by 4 we should multiply the top number by 4. 

So..
19 x 4 = 76

So our new fraction is..
 76 
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100

Now we can easily turn this into a decimal. 
76/100 = 0.76 

Answer = 0.76 

Good Luck! :)
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3 years ago
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The a Eder is b 2,-1
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