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3 years ago

Can someone help me please.....

Mathematics

1 answer:

Helen [10]3 years ago

5 0

Answer:

the third one

Step-by-step explanation:

2 1/2

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It is generally believed that the mean value of the district's total SAT score distribution is equal to 1200 (the null hypothesi

g100num [7]

Answer:

The corresponding p-value, is p = 1

Step-by-step explanation:

The maximum score SAT score, n = 1,600

The mean of the district's total SAT score distribution = 1,200

The claim of one of the districts principal, is the that mean of the district's total SAT score distribution ≠ 1,200

Using proportions, we have;

p = 1,200/1,600 = 0.75

q = 1 - p = 0.25

The margin of error, E = Z√(p·q/n)

∴ E = 5% = Z×√((0.75 × 0.25)/1,600)

z = 0.05/(√((0.75 × 0.25)/1,600)) ≈ 4.61880

Therefore, the corresponding p-value, p = 1

7 0

3 years ago

2x - 3 > 15 or 3 + 7x < 17

Viktor [21]

Answer:

2x-3>15 and 3-7x>17 =

3-7x>17

-7x>14

x<-2

Step-by-step explanation:

Sorry this is not a proper equation. I think you meant this equation.

2x-3>15 and 3-7x>17

for this equation the answer is

3-7x>17

-7x>14

x<-2

6 0

3 years ago

Find the values of the variables

Nikolay [14]

Answer:

corresponding value of equal matrix is equal

a=10

b= -6

c=3

Step-by-step explanation:

4 0

3 years ago

Each block in Ton's neighborhood is 3/8 mile long.If he walks four and 1/2 how far dose he walk

hram777 [196]

since each block is 3/8 of a mile, then how many miles in 4½? well, it'd just be their product, but let's firstly convert the mixed fraction to improper.

$\bf \stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}}
\\\\\\
\cfrac{9}{2}\cdot \cfrac{3}{8}\implies \cfrac{27}{16}\implies 1\frac{11}{16}$

3 0

3 years ago

Find the area of a circle with a<br> circumference of 11(pi)feet.

dlinn [17]

Answer:

30.25pi in terms of pi

94.985 In terms of 3.14

Step-by-step explanation:

Okay since the circumference is 11pi we know d = 11.

Meaning r = 5.5

We can solve this in terms of pi or 3.14, for this I will use both.

The formula for an area of a circle is pi*r^2

So,

5.5 * 5.5 = 30.25.

In terms of pi, the answer would be 30.25pi

In terms of 3.14 the answer would be 94.985

4 0

3 years ago