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Masja [62]
3 years ago
9

Briana spent 2 3/4 hours on her science project. Jackson worked 1 1/3 times as long on his science project as Briana worked. For

how many hours did Jackson work on his science project?
Mathematics
1 answer:
nikdorinn [45]3 years ago
8 0
3 2/3 hours. Because if you do 2 3/4 times 1 1/3 you get 11/3 which simplifies into a mixed fraction of 3 2/3.
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If 20% of a number is 35, what is 50% of that number?
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3 years ago
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Examine the table below. The table shows the cost to order pizzas at a local pizza shop. Determine how much it would cost to ord
viva [34]
It would cost $16.65

$9.99 divided by 3 is 3.33 so we know one pizza costs $3.33. So now if I multiply the 5 pizzas times the cost of one I get 5 x $3.33 = $16.65
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3 years ago
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Jay’s roof is shaped like a triangle. It has a base of 70 feet and a height of 16 feet. What is the area of Jay’s roof?
Wittaler [7]
4,200 you just divide both sides
6 0
3 years ago
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A projectile is shot vertically from the ground level. It’s height h, in feet, after t seconds is given by h = 88t - 16t ^2. How
kozerog [31]

Answer:

it will take 5.5 seconds to hit the ground

Step-by-step explanation:

A projectile is shot vertically from the ground level. It’s height h, in feet, after t seconds is given by h = 88t - 16t ^2

When the projectile hits the ground then the height becomes 0

h = 88t - 16t ^2

0 = 88t - 16t ^2

GCF is -8t

0 = 8t(11 - 2t)

now set each factor =0 and solve for t

8t=0, t=0

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4 years ago
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A+b+c+d=770<br> a+b=c+d <br> a-b=49<br> c-d=211<br> Find numbers.
allochka39001 [22]
A+b = c+d
a+b = 770/2    ( a+b+c+d = 770)
a+b = 385
c+d = 385

a+b+a-b = 385+49
         2a  = 434
           a  = 434/2
           a  = 217
 a-b=49
217-49= b
b         = 168

c+d+c-d = 385+211
         2c = 596
           c = 596/2
           c = 298

c-d = 211
c-211= d
298-211 = d
           d  = 87

Therefore, a=217, b=168, c=298, d=87

6 0
3 years ago
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