PLEASE DO PLEASE PLEASE

Answer:

92.044

Step-by-step explanation:

The variance = 36

σ² = 36 = 6

The probability that x is less than 88 is equal to 0.25

So probability of (x<z) = 0.25

From the z table, z = -0.674

Using the z formula,

z = x-u/σ

Z = -0.674

X = 88

σ = 6

When we insert these formula we have:

-0.674 = 88 - u/6

6 x -0.674 = 88- u

-4.044 = 88 - u

92.044 = u

Therefore from the calculations above the mean of X is 92.044 and it is approximately 92.

Answer:

4:4

Step-by-step explanation:

3:3 can be simplified to 1:1 ( divide by 3) and then to 4:4( multiply by 4)

Hope this helps :D please mark brainliest if correct

The ratio 3:3 reduces to 1:1 when we divide both parts by 3.

Then multiply both parts of 1:1 by 4 to get to 4:4

note how 3/3 = 1 and 4/4 = 1, which helps show 3/3 = 4/4, consequently leading to 3:3 and 4:4 being equivalent ratios.

In general, the ratio 3:3 is equivalent to anything of the form x:x where x is any number you want. So for instance, if x = 7, then 3:3 is equivalent to 7:7

Answer:

11 1/9 unit^2.

Step-by-step explanation:

3 1/3 * 3 1/3

= 10/3 * 10/3

= 100/9

= 11 1/9.

Answer: The diameter is 9

Step-by-step explanation:

Divide the circumference, 28.26,  by the common value of pi, 3.14

[tex]\frac{28.26}{3.14} = 9[/tex]

Answer:

5*8=40, 40 miles

Answer:

40 miles

Step-by-step explanation:

8 x 5 = 40

sheesh

Answer:

I think the answer is 2

Step-by-step explanation:

I it is perpendicular to y=2x-3 then the x value has to be -1 meaning that the x value has to be -2x

so we have Y=-2x+c

We know the Y value is -3 from the co ordinates (0,-3)

so now we have -3=-2x+c

we also know x=0 from the co-ordinates (0,-3)

so we now have -3=-2*0+c

-3=0+c

to make the equation work c has to be -3 meaning that we now have

-3=0-3 which is

Y=-2x-3

Answer:

.

Step-by-step explanation:

Answer:

I think it's One Solution

Step-by-step explanation:

-6|9v-7|=0

Divide 6 on both sides

-6|9v-7| /6=0/6

Simplify

|9v-7|=0

Add a absoulte rule

9v-7=0

v = 7/9

I hope it's right!

Answer:

9/16 or 0.5625

Step-by-step explanation:

Answer:

9/16

Step-By-Step:

2 1/4 = 9/4

Just multiply the denominator by 4

9/4 x 4 = 9/16

Answer:

15x-5y=1

Step-by-step explanation:

y-3x=-1/5

multiply each side by 5

5y-15x=-1

15x-5y=1

Answer: 1+1=2

Step-by-step explanation: Imagine you have 1 cookie, and a friend gives you 1 more, that means your total amount of cookies is 2. So that proves that 1+1=2!

Answer:

D.) $60

Step-by-step explanation:

1 yard= 3 feet

1 yard= 12$

12(5)= 60

5 yards= $60

Answer:

13/20

Step-by-step explanation:

chamge the denominator to the same

Answer:

The answer is A.) 4+6m=70

Step-by-step explanation:

Because I just got it right 2020 (MARK ME THE BRAINLIEST) --(MY GRANDDADDY IS A MATH MAJOR TRUST ME ON THIS ONE)

Answer:

a

Step-by-step explanation:

edge

The equivalent ratio to the ratio 30 : 40 after dividing by 10 will be;

⇒ 3 : 4

What is mean by Ratio?

A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y.

Where, x and y are individual amount of two quantities.

And, Total quantity gives after combine as x + y.

Given that;

The ratio is,

⇒ 30 : 40

Now,

When we dividing both sides by 10, we get;

Since, The ratio is;

⇒ 30 : 40

It can be written as;

⇒ 30 / 40

After dividing by 10, we get;

⇒ 30 / 40

⇒ (30 ÷ 10) / (40 ÷ 10)

⇒ 3 / 4

⇒ 3 : 4

Therefore,

The equivalent ratio to the ratio 30 : 40 after dividing by 10 will be;

⇒ 3 : 4

Learn more about the ratio visit:

https://brainly.com/question/25927869

#SPJ1

Answer:

(x+1)²+(y-5.5)²=11.25

Step-by-step explanation:

1) the common view is:

(x-x₀)²+(y-y₀)²=r², where x₀, y₀ - coordinates of the centre, r - the length of the radius;

2) the coordinates of the centre can be calculated:

[tex]x_0=\frac{2-4}{2}=-1; \ y_0=\frac{4+7}{2}=5.5.[/tex]

3) the length of the radius is:

[tex]r=\sqrt{(-1-2)^2+(5.5-4)^2}=\sqrt{11.25}.[/tex]

4) if the centre is (-1;5.5) and r²=11.25, then it is possible to make up the required equation:

(x+1)²+(y-5.5)²=11.25

Answer:

The other answer is WRONG. INCORRECT. NON-RIGHT! My answer is correct, do NOT delete it.  The correct answer is (x+1)^2 + (y-11/2)^2 = 45/4.  This is how the system wants it! Want proof? I have this question and all others screenshoted for your convenience.

HERE IS PROOF YOU MORON WHO DELETED MY ANSWER

Answer:

900 m

Step-by-step explanation:

l*w*h

12 m (l)*5 m (w)*15 m (h)= 900 m altogether

Answer:

its ADC and ADB

Step-by-step explanation:

they both have the triangle at the top so they are similar, they just arnt the same size

Answer:

y = -4x + 5

Step-by-step explanation:

Answer:

if not 2 x+-4 im sorry

Step-by-step explanation:

Answer:

there's no picture to look at the choices

Step-by-step explanation:

sorry I would help

Answer:

Its A

Step-by-step explanation                                                                                         The dolphin swam 3 feet more which is -7

Answer:

B 7/30

Step-by-step explanation:

P (Purple) = 70 / 300 = 7/ 30

Answer:

B

Step-by-step explanation:

Purple-70/300=7/30

Answer:

1. 2

2. 3

3. 6

4. 3

5. 6

6. 3

7. -6

8. -3

9. 3

10. -5

11. 12

12. -18

13. -1

I'm sorry if any of these are wrong I didn't get to check them over.

Step-by-step explanation:

I will be substituting "a number" with the variable x.

1. Four more than twice a number is 8.

2x+4 = 8

2x = 4

x = 2

2. Three more than four times a number is 15.

4x+3 = 15

4x = 12

x = 3

3. Five less than twice a number is 7.

2x-5 = 7

2x = 12

x = 6

4. One less than four times a number is 11.

4x-1 = 11

4x = 12

x = 3

5. Seven more than the quotient of a number and 2 is 10.

(x/2)+7 = 10

(x/2) = 3

x = 6

6. Six less than six times a number is 12.

6x-6 = 12

6x = 18

x = 3

7. Five less than the quotient of a number and 3 is -7.

(x/3)-5 = -7

x/3 = -2

x = -6

8. Seven more than twice a number is 1.

2x+7 = 1

2x = -6

x = -3

9. The difference between 5 times a number and 3 is 12.

5x-3 = 12

5x = 15

x = 3

10. Nine more than 3 times a number is -6.

3x+9 = -6

3x = -15

x = -5

11. Nine more than the quotient of a number and 4 is 12.

(x/4)+9 = 12

x/4 = 3

x = 12

12. Four less than the quotient of a number and 3 is -10.

(x/3)-4 = -10

x/3 = -6

x = -18

13. Nine less than six times a number is -15.

6x-9 = -15

6x = -6

x = -1

Answer:

4(5 - 7x) = 6 - 12

20-28x=6-12x

Subtract 20 from both sides

20-28x-20=6-12x-20

Simplify

-28x=-12x-14

Add 12x to both sides

-28+12x=-12x=-12x-14+12x

Simplify

-16x=-14

Divide both sides by -16

-16/-16 = -14/-16

Anw

7/8= 0.875

Answer:

The answer is A. 105

Step-by-step explanation:

it's more tilted so it can't be a lower number, the only option is 105

Answer:

The correct option is:

(a) There is sufficient sample evidence for the program's claim to be considered correct.

Step-by-step explanation:

The hypothesis can be defined as follows:

[tex]H_{0}:\mu\geq 4\\\\H_{a}:\mu< 4[/tex]

A random sample of n = 50 students is selected.

The significance level of the test is, α = 0.05.

The degrees of freedom are:

df = n - 1

   = 50 - 1

   = 49

Compute the critical value as follows:

[tex]t_{\alpha,\ (n-1)}=t_{0.05,\ 49}[/tex]

             [tex]=t_{0.05, 60}\\\\=-1.671[/tex]

Use the t-table.

Decision rule:

If the calculate value of the test statistic is less than the critical value then the null hypothesis will be rejected.

The calculate value of the test statistic is, t = -1.69.

[tex]cal.t=-1.69<t_{0.05, 49}=-1.671[/tex]

The null hypothesis will be rejected at 5% level of significance.

The correct option is:

(a) There is sufficient sample evidence for the program's claim to be considered correct.

Answer:

56

Step-by-step explanation:

(24+4)x2=28x2=56

Answer:

56

Step-by-step explanation:

First things first we need to make into an understandable equation. Remember that sum means we will be adding 24 and 4. As for doubled that means that 24+4 will be multiplied by 2 so the equation should turn out like this...

[tex]x=2(24+4)[/tex]

Once we have the equation set up we can solve it...

[tex]x=2(24+4)\\x= 48+8\\x=56[/tex]

So the sum of 24 and 4 doubled is 56.