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nekit [7.7K]
3 years ago
14

I need help on letter b!

Mathematics
2 answers:
Likurg_2 [28]3 years ago
7 0

40 of the toys weren't dolls. The reason why is 5/8 times 64 is equal to 40.

Dovator [93]3 years ago
6 0

Well given that there are 64 prizes (8/8)you have to divide by 8 to see how many there would be in 1/8:

     64/8 = 8

So, if you do 8/8-5/8 = 3/8

Therefore, if you multiply 8*3 you will be given 24 which is the total amount of prizes that are not dolls

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In 2009, the American Time Use Survey found that the average American spends 2.8 hours a day watching TV. Suppose the standard d
Anit [1.1K]

Answer:

4.72 hours/day

Step-by-step explanation:

Mean time spent watching TV (μ) = 2.8 hours a day  

Standard deviation (σ) = 1.5 hours a day

The 90th percentile (upper 10%) of a normal distribution has an equivalent z-score of roughly z = 1.282. The minimum time spent watching TV, X, at the 90th percentile is:

z=\frac{X-\mu}{\sigma} \\1.282=\frac{X-2.8}{1.5}\\ X=4.72\ hours/day  

On a typical day, you must watch at least 4.72 hours of TV to be in the upper 10%.

8 0
3 years ago
-10y + 18 = -3(5y -7) +5y
murzikaleks [220]
There aren't any solutions. I recommend using MathPapa algebraic calculator for problems like this. Here's the link: https://www.mathpapa.com/algebra-calculator.html
7 0
3 years ago
Read 2 more answers
Jeff and Tim spent $4.59 on<br>gumballs. How many pounds did<br>they buy? Gumballs $ .51 per pound​
Tcecarenko [31]

Answer: 9

Step-by-step explanation:

5 0
3 years ago
Aline crosses the coordinates (-4,-5) and (2, 4). What is the slope of the line?
djyliett [7]

Answer: use the website desmos and plug in the cordinate it gives u the line automaticaly.

Step-by-step explanation:

7 0
3 years ago
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Please help me!!! Idk!
balandron [24]
Perimiter
we have a half circle and 3 sides of a rectangle
half circle

circumfernce=2pir
half of that is 1/2 2pir or pir
so
diameter=8
radius is 1/2 of that or 4
so
that arc is 4pi

the 3 sides are 8+9+9 or 26

if we use pi=3.141592
4pi+26=38.566368
rounded we get
38.57
the closest one is C

answer is C

3 0
3 years ago
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