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Sedaia [141]
4 years ago
8

Wendy and bob are counting penguins to find how many had a scarf. Wendy said 2/3 of the penguins had a scarf. Bob said that 6/9

of the penguins had a scarf. Are both Wendy and Bob correct?
Mathematics
1 answer:
ra1l [238]4 years ago
8 0

Answer:

The answer to your question is Wendy and Bob are correct.

Step-by-step explanation:

Data

Wendy  said 2/3 of the penguins had a scarf.

Bob said 6/9 of the penguins had a scarf.

Process

Before we decide, we must check if the fractions are equivalent, we must simplify both fractions

Wendy's fraction is not possible to simplify because it is in its simplest expression.

But we can simplify Bob's fraction dividing both numerator and denominator by 3       \frac{6}{9} = \frac{2}{3}

Finally, we observe that both fractions are equivalent and conclude that Wendy and Bob are right.

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roberto needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. how many does roberto need for 10 plates?
lapo4ka [179]
1.5 cookies and 0.5 brownies are needed for 1 plate. In 10 plates, you will need 15 cookies and 5 brownies.
6 0
3 years ago
Whats he approximete value of the square root of 8
Neporo4naja [7]

Answer:

the approximate value of the square root of 8 is 2.828

8 0
3 years ago
if it asks for scale factor does that mean i’m supposed to write a ratio? Can someone solve and explain these for me i’m so conf
STatiana [176]
Yes scale factor means ratio. The height of the smaller pyramid to the larger pyramid in ratio form is 8:24 which simplifies to 1:3. The ratio of its areas is the scale factor squared, so 1^2:3^2=1:9. Since the surface area of the smaller pyramid is 124, the surface area of the larger pyramid must be 124x9. The ratio of volumes is the scale factor cubed, so 1^3:3^3=1:27. If the volume of the larger pyramid is 648, then the volume of the smaller pyramid is 1/27 of that, which equals 24.
8 0
3 years ago
A ball is thrown into the air with an initial velocity of 22 meters per second. The quadratic function h(x)= -4.9t square +22t+5
MrRa [10]

Answer:

Height of the ball after 3 seconds = 27.4 feet.

Step-by-step explanation:

h(t) = -4.9t^2 + 22t + 5.5

h(3) means the height of the ball at time 3 seconds after the ball was thrown.

h(3) = -4.9(3)^2 + 22(3) + 5.5

=  27.4 feet

5 0
3 years ago
Joe drove 538 miles in 9 hours 15 minutes what was his average speed per hour
DanielleElmas [232]
To calculate any speed, the equation is speed=distance/time
Basically, you first need to take your 9 hours and 15 minutes and combine them into a number with a decimal value.
So, 15*4=60
Sound familiar? Good, because 25*4=100, so they are the same here.
So, we can say 9 hours and 15 minutes is equal to 9.25
Take this now: Speed=538/9.25
You get 58.1621, which you can round to 58.2
This is, of course, your final answer, so Joe drove at 58.16 mph
7 0
3 years ago
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