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Blizzard [7]
3 years ago
10

Help me grade 9! Thankyou

Mathematics
1 answer:
algol133 years ago
4 0

Answer:

got ya

Step-by-step explanation:

You might be interested in
What is 2(c+7)=2c+14
liq [111]

2(c+7)=2c+14

Use distributive property

2*c +2*7

2c+14=2c+14

Hope it helps!

3 0
3 years ago
In the last quarter of​ 2007, a group of 64 mutual funds had a mean return of 2.2 2.2​% with a standard deviation of 6.3 6.3​%.
Svet_ta [14]

Answer:

a) 0.625; b) 16.879; c) 8.442

Step-by-step explanation:

Since this is a normal distribution, we want the value of the mean, μ:  2.2; and the value of the standard deviation, σ:  6.3.

For the 40th percentile, we look in a z chart.  We want to find the value as close to 0.40 as we can get; this is 0.4013, and it corresponds to a z score of z = -0.25.

Our formula for a z score is z=\frac{X-\mu}{\sigma}.  Using our values, we have

-0.25 = (X-2.2)/6.3

Multiply both sides by 6.3:

6.3(-0.25) = X-2.2

-1.575 = X-2.2

Add 2.2 to each side:

-1.575+2.2 = X-2.2+2.2

0.625 = X

For the 99th percentile, the value in the z chart closest to 0.99 is 0.9901, which corresponds to a z score of z = 2.33:

2.33 = (X-2.2)/6.3

Multiply both sides by 6.3:

6.3(2.33) = X-2.2

14.679 = X-2.2

Add 2.2 to each side:

14.679+2.2 = X-2.2+2.2

16.879 = X

For the IQR, we find the values for the 75th percentile (Q3) and the 25th percentile (Q1).  The value in a z chart closest to 0.75 is 0.7486, which corresponds to a z score of z = 0.67:

0.67 = (X-2.2)/6.3

Multiply both sides by 6.3:

6.3(0.67) = X-2.2

4.221 = X-2.2

Add 2.2 to each side:

4.221+2.2 = X-2.2+2.2

6.421 = X

The value in a z chart closest to 0.25 is 0.2514, which corresponds to a z score of z = -0.67:

-0.67 = (X-2.2)/6.3

Multiply both sides by 6.3:

6.3(-0.67) = X-2.2

-4.221 = X-2.2

Add 2.2 to each side:

-4.221+2.2 = X-2.2+2.2

-2.021 = X

This makes the interquartile range

6.421--2.021 = 8.442

8 0
3 years ago
Find the area of the figure.
Studentka2010 [4]

Answer:

SOLVE FOR RECTANGLE

Area: lw (length times width)

rectangle: lw (6x6)

AREA=36in

SOLVE FOR TRIANGLE B

Area: A=hbxb/2

A=hb/b2=6·6/2=18

TRIANGLE B=18in

SOLVE FOR TRIANGLE A

Area: A=hbxb/2

The height looks half the height as the other triangle

A=hb/b2=3·4/2=6

TRIANGLE A=6in

{ADD}

36+18+6

TOTAL: 60in

Step-by-step explanation:

HOPE THAT HELPED!!!

3 0
3 years ago
Find the x-intercept of the rational function.
alexira [117]

Answer:

What question are we supposed to answer

Step-by-step explanation:

Sorry I read the whole thing multiple times and couldn’t find what the question was

If you wanted the points to be graphed use Desmo calculator they graph the points for you:)

8 0
3 years ago
Can someone answer this:
ASHA 777 [7]
4.00 ÷ 0.25 = 16
.70 ÷ 0.05 = 14

16 quarters + 14 nickels = 30 coins
3 0
3 years ago
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