please help I really need it

Answer:

[tex]=\left(9a-8\right)\left(a+1\right)[/tex]

Step-by-step explanation:

[tex]9a^2+a-8\\\mathrm{Break\:the\:expression\:into\:groups}\\=\left(9a^2-8a\right)+\left(9a-8\right)\\\mathrm{Factor\:out\:}a\mathrm{\:from\:}9a^2-8a\mathrm{:\quad }a\left(9a-8\right)\\9a^2-8a\\\mathrm{Apply\:exponent\:rule}:\quad \:a^{b+c}=a^ba^c\\a^2=aa\\=9aa-8a\\\mathrm{Factor\:out\:common\:term\:}a\\=a\left(9a-8\right)\\=a\left(9a-8\right)+\left(9a-8\right)\\\mathrm{Factor\:out\:common\:term\:}9a-8\\=\left(9a-8\right)\left(a+1\right)[/tex]

So the right answer is (9a-8)(a+1)

Look at the attached picture

Hope it will help you

Answer:

Ans:50

Step-by-step explanation:

Because in that part of the triangle equals 180 so 180-67-63=50

Hopefully this is right and it helped:)

Answer:

option A is the correct answer

Answer:

You can add 4 tablespoons

Step-by-step explanation:

If you add 4 tablespoons the 1 1/2 cups of flour will blend in with the tablespoons making a circle like figure.

Answer:

24

Step-by-step explanation:

1 cup is 16 tablespoons

16+8=24

Answer:

1.5

Step-by-step explanation:

You have the same volume which is 24pi. You divide 24 by 16 and get 1.5

Answer:

the sin of 285 is 0.77387

Step-by-step explanation:

Answer:

negtive square root of 2 minus square root of 6, over 4

Step-by-step explanation:

plato

Answer:

Mean, E(x) = 0.17

Variance, V(x) = 0.12

Step-by-step explanation:

90% contains no defective bulbs, P(X=0) = 0.9

5% contain one defective bulbs, P(X=1) = 0.05

3% contain two defective bulbs, P(X=2) = 0.03

2% contain three defective bulbs, P(X=3) = 0.02

The mean for the number of defective bulbs:

[tex]E(X) = \sum XP(X)\\E(X) = (0*0.9) + (1*0.05) + (2*0.03) + (3* 0.02)\\E(X) = 0 + 0.05 + 0.06 + 0.06\\E(X) = 0.17[/tex]

Variance for the defective bulbs:

[tex]V(x) = (\sum x^{2}P(x) ) - \mu^2[/tex]

[tex]\sum x^{2}P(x) = (0^2*0.9) + (1^2*0.05) + (2^2*0.03) + (3^2* 0.02)\\\sum x^{2}P(x) = 0.05 + 0.12 + 0.12\\\sum x^{2}P(x) = 0.29[/tex]

V(x) = 0.29 - 0.17

V(x) = 0.12

Answer:

A) 180 packets

B) €450

Step-by-step explanation:

A) There are 300 packets of 1 kg of sugar in a container.

3/5 of the total amount is:

3 / 5 * 300 = 180 packets

B) Each packet goes for €2.50.

3/5 of the total amount is 180 packets, therefore, 180 packets will go for:

2.5 * 180 = €450

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

20 is the hypotenuse and 16 is the leg, first solve 20^2 (20x20) to get 400 and 16^2 (16x16) to get 256, then subtract the leg from the hypotenuse to obtain 144 (400 - 256) then obtain the square root of 144 ([tex]\sqrt{144}[/tex]) then 12 will be the awnser.

Answer:

1. The rocket was launched from a height of 180 feet.

=> Valid because at time = 0 sec, height = 180 feet (as shown in table)

2.The maximum height of the rocket occurred 3 seconds after launch.

=> Valid because at time = 3 sec, height = 324 feet (greatest value in second row of table).

3.The rocket was in the air approximately 6 sec before hitting ground.

=> Not valid because the time in table in about 7 sec (from 0 to 7), but all of the heights are greater than 0 (the rocket has not hit the ground yet).

4. The rocket was above 300 feet for approximately 2 seconds.

=> Valid because from sec 2 to sec 4: the height is greater than 300 (308, 324, and 308)

=> Option 3 is not valid.

Hope this helps!

:)

Answer:

2/52

Step-by-step explanation:

because there are only two red Queens and there is 52 cards in a deck

Answer:

2/52

Step-by-step explanation:

In a deck of cards, there are 2 red queens and in total 52 cards.

*Please give Brainliest to the person on top because they answered first! :)

Answer:

$ 15,262.76

Step-by-step explanation:

A = P + I where

P (principal) = $ 7,927.00

I (interest) = $ 7,335.76

Answer: 22.4 m/s

Step-by-step explanation:

Average speed can be calculated using the following formula:

Speed = [tex]\frac{Distance}{Time}[/tex]

Speed = 560m/25 seconds

speed = 22.4 m/s

Answer:

471 ft^3

Step-by-step explanation:

The volume of a cylinder is given by

The radius is d/2 = 10/2 = 5

C = pi r^2 h

   = 3.14 * 5^2 * 6

  471

Answer:

Pytagora's Theorem

Step-by-step explanation

a = 4 m

b = 15 m

c = ?

a^2 + b^2 = c^2

√ a^2 + b^2 = c

a^2 = 16 m

b^2 = 225 m

√  16 + 225 = c

√  241 = 15.52 m

c = 15.52 m

I hope I was helpful

Answer:

0.85% probability that the first two are good and the last three are spoiled

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the first two jugs is not important, as is not the order in which the last three are selected. So we use the combinations formula to solve this question.

Combinations formula:

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

Desired outcomes:

2 spoiled, from a set of 43-11 = 32.

3 spoiled, from a set of 11.

So

[tex]D = C_{32,2}*C_{11,3} = \frac{32!}{2!(32-2)!}*\frac{11!}{3!(11-3)!} = 982080[/tex]

Total outcomes:

5 jugs from a set of 43.

[tex]T = C_{43,5} = \frac{43!}{5!(43-5)!} = 115511760[/tex]

Probability:

[tex]p = \frac{D}{T} = \frac{982080}{115511760} = 0.0085[/tex]

0.85% probability that the first two are good and the last three are spoiled

Answer:

What happens when h is positive?

The asymptote of the graph shifts right by that amount.

What happens when h is negative?

The asymptote of the graph shifts left by that amount.

What happens when k is positive?

The entire graph shifts up by that amount.

What happens when k is negative?

The entire graph shifts down by that amount.

Answer:

1.)c

2.)d

3.)a

4.)b

Step-by-step explanation:

Answer:

0.011 or 1/90

Step-by-step explanation:

Since the order of the performances is determined at random the probability of each squad is constant that 1/10

The probability of your squad is 1/10

Given that the first selected was yours (1/10) nine squads are left . Therefore the probability of your friends squad is 1/9.

Hence  the probability that your squad performs first and your friend's squad performs second is (1/10 * 1/9) 1/90 or 0.011

Answer:

the answer is 3

Step-by-step explanation:

in the number 66 there are "2" circles in them and so the answer we get 2

in the number 99 there are "2" circles and so the answer there is 2

in the number 888 there are "6" circles so the answer is 6

in the number 00 there are "2" circles that's the answer

in the number 7777 there are no circles so the answer is 0

we keep on going like that......

in the number 2876 there are 3 circles 2 in the number 8 and 1 in the number 6

hope this helped :D

Answer:

3

Step-by-step explanation:

Answer:

The margin of error is multiplied by 1.41, which is 1 divided by the square root of 5.

Step-by-step explanation:

The margin of error is:

[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]

In which z is related to the confidence level, [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

The margin of error is inverse proportional to the square root of the sample size.

Then

Sample size n:

[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]

Modified(half the sample size):

[tex]M_{M} = z*\frac{\sigma}{\sqrt{0.5n}}[/tex]

Ratio

[tex]\frac{M_{M}}{M} = \frac{z*\frac{\sigma}{\sqrt{0.5n}}}{z*\frac{\sigma}{\sqrt{n}}} = \frac{\sqrt{n}}{\sqrt{0.5n}} = \frac{\sqrt{n}}{\sqrt{0.5}*\sqrt{n}} = \frac{1}{\sqrt{0.5}} = 1.41[/tex]

The margin of error is multiplied by 1.41, which is 1 divided by the square root of 5.

Answer:

5,004,300

Step-by-step explanation:

Answer:

i think its 4 simplified from 4/1

Step-by-step explanation:

Answer:

B. 1/4

Step-by-step explanation:

There are a total of 20 students

4 have black and 1 has red. In total 5

5/20

If you simplify by dividing both numbers by 5 it becomes

1/4

Answer:

  neither exponential nor linear

Step-by-step explanation:

A linear relationship will show a common difference between adjacent value. Here, the first differences between the first three values are 5 and 33. They are not the same, so the relation is not linear.

__

An exponential relationship will show first differences that are continuously increasing or decreasing by increasing or decreasing amounts (respectively).

As we showed, the difference between May 28 and May 27 is 33. This is more than the previous difference. However, the difference between May 30 and May 31 is only 28, which is less than a previous difference.

The relation is not exponential.

__

A graph points up the non-linearity of the relation.

Answer:

[(20×20)×26]/3 = 3467cm³

Step-by-step explanation:

The volum of a Pyramid is equal to:

Ab = Area of the base = 20 × 20 = 400 cm²

h = height = 26 cm

so, yoi have: (400 × 26) / 3

Answer:

(-1,3)

Step-by-step explanation:

hello :

y−3=2(x+1)

if x= -1       y-3 = 2(-1+1)

y-3=0   so : y=3

(-1,3)

Answer:

Step-by-step explanation:

The question is

There is 11.73 kg of chocolate candies in the grocery store. The first customer bought 48 dag of candies. A second customer bought 4/5 of the remaining quantity. The last three customers bought the same amount of candy. How much chocolate did the last customers get?

Givens

Let's transform 48 dag to kilograms.

[tex]48dag \times \frac{1kg}{100dag}= 0.48 \ kg[/tex]

Therefore, the first costumer bought 0.48 kilograms of candies.

The remaining amount is: [tex]11.73kg-0.48kg=11.25kg[/tex]

Now, we need to multiply the remaining amount of candies with 4/5

[tex]\frac{4}{5} \times 11.25kg=9 \ kg[/tex]

Therefore, the second costumer bought 9 kilograms of chocolate candies.

At last, we need to find the new remaining part of candies, which is

[tex]11.25-9=2.25 \ kg[/tex]

Therefore, the last costumers got 2.25 kilograms of chocolate candies.