All categories

3 years ago

PLEASE HELP ILL GIVE BRAINLIEST ASAP

Mathematics

1 answer:

svet-max [94.6K]3 years ago

4 0

Answer:

hope you can figure it out from the but incase you can't it's D.

Step-by-step explanation:

10% off $40 would be $36 15% off $45 would be $38.25

$36 > $38.25

You might be interested in

Of the 32 teachers at Devon's high school, 22 are female. What is the ratio of the number of male teachers to the total number o

stich3 [128]

Answer:

10:32

Step-by-step explanation:

32-22=10 male teachers

6 0

2 years ago

60 pOINTS HELP PLEASE 4. A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5

Solnce55 [7]

K.E=0.5mv^2
GPE=mgh
The child has both K.E and GPE
$ke = 0.5 \times 20 \times {5}^{2} \\ ke = 10 \times 25 \\ ke = 250 \: joules$
$gpe = 20 \times 9.81 \times 2 \\ gpe = 40 \times 9.81 \\ gpe = 392.4 \: joules$
g is taken as 9.81

6 0

3 years ago

The National Center for Educational Statistics surveyed 5400 college graduates about the lengths of time required to earn their

fenix001 [56]

Answer:

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.645*\frac{1.9}{\sqrt{4500}} = 0.04$

The lower end of the interval is the sample mean subtracted by M. So it is 5.4 - 0.04 = 5.36 years.

The upper end of the interval is the sample mean added to M. So it is 5.4 + 0.04 = 5.44 years.

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

3 0

3 years ago

The volume of a rectangular prism is 2,058cm. The Length of the prism is 3 times the width. The height is twice the width. Find

Nat2105 [25]

v = l x w x h

v = 2058

width = x

height = 2x

length = 3x

2058 = 3x*2x*x =

2058 = 6x^3=

343 = x^3

x = 7

2*7 = 14

3*7 = 21

21*14*7 = 2058

height is 14 cm

5 0

3 years ago

Use the distributive property to simplify 1/6 × (36+1/2)

kicyunya [14]

1/6(36 + 1/2) = 6 + 1/12 = 72/12 + 1/12 = 73/12

5 0

2 years ago