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3 years ago

PLS HELP ASAP!! WILL MARK BRANILY TO PERSON WHO IS CORRECT!!!

Mathematics

2 answers:

balu736 [363]3 years ago

7 0

Answer:

0.16

Step-by-step explanation:

Y_Kistochka [10]3 years ago

4 0

Answer:

0.0556

Step-by-step explanation:

P(Blue,Yellow) = 1/6 x 2/6 = 1/18 = 0.0556

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Mrs. Smith spent $67.40 on groceries. The tax rate is 2%. What is the amount of sales tax?

Airida [17]

Answer:

68.75

Step-by-step explanation:

to find the tax you multiply the total by the tax percentage 67.40 x .02 = 1.35

so the total for just tax is 1.35 so you add that to how much the groceries were originally

67.40+1.35=68.75

5 0

3 years ago

Consider a large population with a mean of 150 and standard deviation of 27. a random sample of size 25 is taken from the popula

Karolina [17]

Answer:

Standard error = 5.4

Step-by-step explanation:

We are given that Population Mean, $\mu$ = 150 and Population Standard deviation, $\sigma$ = 27 and sample size, n = 25

Standard error formula for the sampling distribution of this sample mean is given by;

Standard error = $\frac{\sigma}{\sqrt{n} }$ = $\frac{27}{\sqrt{25} }$ = 5.4

5 0

3 years ago

How do you find the surface area of a sphere? What should the label be?

melamori03 [73]

Surface area = 4 pi r^2

where

pi : 3.14 a constant

r : raduis

surface area is the change of volume with respect to raduis

volume = 4/3 pi r^3

dvolume/dr = 4 pi r^2

you can prove the identity with double integration in spherical coordinates or volumes of revolutions and polar coordinates

7 0

4 years ago

Order the rational numbers from east to greatest -7/3, -2 5/8, -2.9.

melomori [17]

Answer:

Step-by-step explanation:

-7/3, -2 5/8, -2.9

-2 1/3, -2 5/8, -2 9/10

-2 9/10, -2 5/8, -2 1/3

this is the order from least to greatest

-2.9, -2 5/8, -7/3

5 0

3 years ago

Read 2 more answers

at an animal shelter there are 15 dogs 12 cats 3 snakes and 5 parakeets. what percent of the number of cats is the number of sna

dsp73

Percentage of cats
$\frac{# animals}{#cats} = \frac{100}{?}$
$\frac{35}{12}= \frac{100}{?} 
$
**cross multiply 12 and 100 which is 1200
**divide 35 into 1200
the answer is 34.3% when rounded

percentage of snakes
$\frac{# animals}{#snakes} = \frac{100}{?}$
**cross multiply 3 and 100 which is 300
**divide 35 into 300
 $\frac{35}{3}= \frac{100}{?}$
the answer is 8.57%

7 0

3 years ago