Can anyone find the answer to this question

Answer:b

Step-by-step explanation:

Answer: prime

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I did it in my head but pretty much just add the 5x-2 and x+ 12 then set it equal to 40. u get x = 5. plug x back in and you get 23 and 17

Answer:

The answer is B

Step-by-step explanation:

5x - 2 + x + 12 = 40

6x + 10 = 40

6x = 30

x = 5

5(5) - 2

25 - 2

PQ = 23

(5) + 12

QR = 17

Answer:

a = fr /Q

Step-by-step explanation:

Q /r = f/a

Using cross products

Q a = fr

Divide each side by Q

Qa /Q = fr/Q

a = fr /Q

Answer:

The pebble travelled 149.25 feet vertically

Step-by-step explanation:

Answer:

[tex]S^{2} n[/tex]  n − 6 n + 6

Step-by-step explanation:

Answer:

9 /15 and 18/30

Step-by-step explanation:

9/15 is literally just 18/30 simplified

Answer:

9*2        18

-------- = ------

15*2       30

Answer: option D

Step-by-step explanation:

Answer:

D/ The percent change is 60%.

Step-by-step explanation:

i did the quiz

Answer:

44

Step-by-step explanation:

180-88=92 (linear pair)

y+y+92=180 (Angle sum property)

y+y=180-92

y+y=88

y=88/2

y=44

Using the exponential distribution, it is found that 70% of all light bulbs last at least 2.85 years.

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:  

[tex]f(x) = \mu e^{-\mu x}[/tex]

In which [tex]\mu = \frac{1}{m}[/tex] is the decay parameter.

The probability that x is lower or equal to a is given by:

[tex]P(X \leq x) = \int\limits^a_0 {f(x)} \, dx[/tex]

Which has the following solution:

[tex]P(X \leq x) = 1 - e^{-\mu x}[/tex]

The probability of finding a value higher than x is:

[tex]P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}[/tex]

In this problem, the mean lifetime is of 8 years, hence [tex]m = 8, \mu = \frac{1}{8} = 0.125[/tex].

Seventy percent of all light bulbs last at least x, considering that [tex]P(X > x) = 0.7[/tex].

Hence:

[tex]P(X > x) = 0.7[/tex]

[tex]e^{-0.125x} > 0.7[/tex]

[tex]\ln{e^{-0.125x}} > \ln{0.7}[/tex]

[tex]-0.125x > \ln{0.7}[/tex]

[tex]x > -\frac{\ln{0.7}}{0.125}[/tex]

[tex]x > 2.85[/tex]

70% of all light bulbs last at least 2.85 years.

To learn more about the exponential distribution, you can take a look at https://brainly.com/question/18596455

Answer:

0.1875

Step-by-step explanation:

You would divide 3 by 16 and get 0.1875.

Answer:

100 inches

Step-by-step explanation:

Well, 500 feet is 6,000 inches. So, to find out how far does the worm travel in 1 hour (60 minutes) we would have to divide: 6,000 ÷ 60 minutes (1 hour) = 100. So, the worm can travel 100 inches in 1 minute

(sorry if wrong!)

Answer:

19% Im taking the test rn and it was correct

Step-by-step explanation:

:) hope it helps

Answer:  0.579

Steps:  57.9%

Put 57.9% in a fraction:   ⁵⁷⁹⁄₁₀₀₀

Convert ⁵⁷⁹⁄₁₀₀₀ to decimal by applying long division:  100 ÷ 579 = 0.579

The correct answer is 0.579.

Plz mark brainliest:)

Answer:

Step-by-step explanation:

Let the number of cows = x

Let the number of chickens = y

4x + 2y = 140

x + y = 54

Multiply the second equation by 2

2x + 2y = 108

Now write the new equation under the first equation and subtract.

4x + 2y = 140

2x + 2y = 108      Subtract

2x = 32                Divide by 2

x = 32/2

x = 16

There are 16 cows and 38 chickens.

Check

16 * 4  =   64

38 * 2 =   76

Total      140

Answer:

Step-by-step explanation:

technically none of those, i'm pretty sure that in [tex]y=mx+b[/tex]  form it would be [tex]y=x+8[/tex] but in the form of the answer choices it would be [tex]-1x+y=8[/tex] .

I don't know if i'm wrong or the answer choices are, but I still hope this helps!

(✿◕‿◕✿)

Answer:

C. 3.8

Step-by-step explanation:

Add -2 (second equation) to the first equation to eliminate x :

(2x - 4y) + (-2) (x + 5y) = 10 + (-2) • 40

(2x - 4y) + (-2x - 10y) = 10 - 80

-14y = -70

y = 5

Plug this into either equation (I'll use the second) to solve for x :

x + 5y = 40

x + 5 • 5 = 40

x + 25 = 40

x = 15

Answer:

angle1 : angle 2:

72                108

Step-by-step explanation:

Supplementary angles add to 180

angle1 : angle 2:

2               3

Multiply each term by x

2x           3x

The total is 180

2x+3x= 180

5x= 180

Divide by 5

5x/5 =180/5

x =36

angle1 : angle 2:

2*36           3*36

72                108

Answer:

13.2%

Step-by-step explanation:

Step-by-step explanation:

13.2% chctxtxycfyyfgy

Answer:

= 21

Step-by-step explanation:

Now percentage of students wearing shorts = (9/21) * 100

= (3/7) * 100

= 300/7

= 42.85 percent

So a total percentage of 42.85% of the students were wearing shorts.

Answer:

33/24  or 11/8, or  1 9/24 or 1 3/8

Step-by-step explanation:

you have to find a common denominator between the two fractions. The least common denominator for 9 and 8 is 24. Since you multiply 9 by 3 to get 24, you multiply 5 by 3 and get 15. You now have the fraction 15/24. Since you multiply 8 by 3 to get 24, you also multiply 6 by 3, which is 18. You now have the fraction 18/24. You add 15/24 and 18/24, and you get 33/24, which can be simplified to 11/8. It can be shown as 1 9/24 as a mixed number, and simplified to 1 3/8.

Answer:

[tex]\huge\boxed{x=8a}[/tex]

Step-by-step explanation:

In order to make the equation [tex]\frac{3}{a}x-4=20[/tex] into terms of x, our goal is to get x isolated on one side of the equation.

Let’s simplify this equation by reversing it until we get x = ___.

Add 4 to both sides:

[tex]\frac{3}{a}x - 4 + 4 = 20+4\\\\\frac{3}{a}x = 24[/tex]

Multiply both sides by a:

[tex]\frac{3}{a}x \cdot a=24 \cdot a\\\\3x = 24a[/tex]

Divide both sides by 3:

[tex]3x \div 3 = 24a \div 3\\\\x = 8a[/tex]

Now we have x isoalted with a term equal to it. Therefore, x = 8a.

Hope this helped!

Answer:

Area= 144ft^2

Step-by-step explanation:

Finding an area of a parallelogram is base times height

The base would be 12+6 which would be 18

The height is 8

18*8

Answer:

144 square feet

Step-by-step explanation:

This is the answer because:

1) First, the area of the parallelogram is base x height

2) The base is the lower part of the parallelogram. 6 and 12 are the base. You have to add 12 and 6 to get the full and correct length for the base

12 + 6 = 18

3) Now, we just multiply 18 and 8 which is 144

18 x 8 = 144

Hope this helps! :D

Answer:

[tex]m=\frac{2}{3}[/tex]

General Formulas and Concepts:

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

C (0, 1)

D (3, 3)

Step 2: Find m

Answer:

ha ya

Step-by-step explanation:

Answer:

It's A

Step-by-step explanation:

The y-intercept is 6, as seen on the chart.

To get the slope it is y2 - y1 / x2 - x1

Use the x and y intercepts

0 - 6 / 3 - 0

-6 / 3

-2

There you have your slope, just put it together!

y = -2x + 6

Answer:

(3.0)/(0.6)

m=6-0/0-3=-2

a

Step-by-step explanation: