Need help, will give brainliest

Answer:

"0.9739" is the correct answer.

Step-by-step explanation:

The given values are:

The ratio of true to false effects,

= 0.07

The power of study,

= 0.8

Alpha level,

= 0.05

Now,

The percentage of effects proved as significant will be:

= [tex]0.8\times \ 70 \ percentage[/tex]

= [tex]0.56[/tex]

0r,

= [tex]56[/tex]%

The percentage of false effects will be:

= [tex]0.05\times 30 \ percent[/tex]

= [tex]0.015[/tex]

or,

= [tex]1.5[/tex]%

The total effects will be:

= [tex]56+1.5[/tex]

= [tex]57.5[/tex]%

hence,

The probability that this effect is real will be:

= [tex]\frac{56}{57.5}[/tex]

= [tex]0.9739[/tex]

Answer: 2200

Step-by-step explanation:

First we will find the area of the triangle, the formula for that is bh/2

(base multiplied by height divided by 2) then we input the numbers into our formula, 30 is the height of the triangle and 40 is the length of the base. So we have to solve 40*30/2 which is 600, then we solve for the square on the bottom which is b*h ( base multiplied by height) so it is 40*40, so we would get 1600, then we add 600 and 1600 together and get 2200.

Answer:

1/2

Step-by-step explanation:

P= 7/14

= 1/2

The probability of Pickup Truck is 1/2

Answer:

10625

Step-by-step explanation:

Let x= the amount loaned at 7%

which means that the amount loaned at 15% is 19000-x (or the rest of the money)

we can write the following equation

x*.07+(19000-x)(.15)=2000

solve for x

.07x+2850-.15x=2000

-.08x= -850

x=10625

Answer: 3rd quadrant

Step-by-step explanation:

This is a question relating to trigonometry.

First quadrant = Angles between 0∘ and 90∘.

Second quadrant = Angles between 90∘ and 180∘

Third quadrant = Angles between 180∘ and 270∘

Fourth quadrant = Angles between 270∘ and 360∘

Therefore, since 250° is between 180° and 270°, it's in the 3rd quadrant.

Answer:

Equation would be: y = [tex]\frac{4}{7} x + 4[/tex]

Hope this helps!

Answer:

44

Step-by-step explanation:

circumference = 2πr = 2*(22/7)*(14/2) = 44

Answer:

C = 44 cm

Step-by-step explanation:

The diameter is 14.  

The formula for circumference is

C = pi * d  where d is the diameter

C = 22/7  * 14

C = 22 * 2

C = 44 cm

Answer: 69

Step-by-step explanation: EZ

Answer:

7.2 yds²

Step-by-step explanation:

6 × 1.2

7.2 yds²

Answer:

The answer is 45

Step-by-step explanation:

Answer:

I think 21,200,000,000

Step-by-step explanation:

because if you convert 4% in decimal it would be 0.04 then multiple

0.04 x 530,000,000,00 = 21,200,000,000

Given:

The expression is:

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}[/tex]

To find:

The simplified form of the given expression.

Solution:

We have,

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}[/tex]

It can be written as

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}=\dfrac{7^{x}\cdot 7^{2}-9\cdot 7^x}{-20\times 7^x}[/tex]

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}=\dfrac{7^{x}(49-9)}{-20\times 7^x}[/tex]

Cancel out the common factors.

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}=\dfrac{40}{-20}[/tex]

[tex]\dfrac{7^{x+2}-9\cdot 7^x}{-20\times 7^x}=-2[/tex]

Therefore, the simplified value of the given expression is -2.

Answer:

A. Yes

Step-by-step explanation:

I calculated it logically

Yes the given figure with rectangle tessellates the plane.

A rectangle cannot tessellate a plane by itself because it is not a regular polygon with equal angles and sides.

A rectangle can only tessellate the plane if it is combined with other shapes, such as squares or triangles, to form a regular tessellation.

Yes, the given figure tessellates the plane.

Hence, Yes the given figure tessellates the plane.

To learn more on Rectangles click:

https://brainly.com/question/20693059

#SPJ7

Answer:

(2x + y)*5

Step-by-step explanation:

Translating the word problem into an algebraic expression, we have;

(2x + y) * 5

Simplifying an expression simply means to collect like terms that are having the same variables or constants and combining them, so as to reduce the expression to the lowest possible value.

Simplifying further by opening the bracket, we have;

(2x + y)*5 = 10x + 5y

9514 1404 393

Answer:

  x = ±√(c/a)

Step-by-step explanation:

Undo what is done to x.

  ax² -c = 0

  ax² = c . . . . . . add c

  x² = c/a . . . . . . divide by a

  x = ±√(c/a) . . . . take the square root

Answer:

4 cups

Step-by-step explanation:

Answer:

will be sufficient to prove triangles congruent. If three sides of a triangle are congruent to three sides of another triangle, the triangles are congruent. If two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

Answer:

3.15 ツ

Step-by-step explanation:

Answer:

120

-------

8 x 3 = 24

24 x 5 = 120

= 120

Step-by-step explanation:

9514 1404 393

Answer:

  ∠1 = ∠3 = ∠5 = ∠7 = 81°

  ∠2 = ∠4 = ∠6 = 99°

Step-by-step explanation:

Vertical and corresponding angles are congruent. Angles 1 and 99° are supplementary, so ...

  ∠1 = 180° -99° = 81°

Then we have ...

  ∠1 = ∠3 = ∠5 = ∠7 = 81°

  ∠2 = ∠4 = ∠6 = 99°

Answer:

The rectangular form of [tex]4[cos(150^{o})+i sin (150^{o})][/tex] is [tex]-2\sqrt{3}+2i[/tex].

Answer:

He would need to visit a minimum of 12 times

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

1 , 3 and 4 have at least two pairs of parallel lines,

2 only have one pair of parallel line

(that's the only thing I can think of)

Answer:

17%

Step-by-step explanation:

（244530—209000）/209000*100%=17%

Answer: wait huh

Step-by-step explanation: