please help me

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Answer:

a=4/3

Step-by-step explanation:

Opening the brackets,

a+4-12+a+2+a+2

3a=4

∴a=4/3

Answer:

  3 years

Step-by-step explanation:

As with many age problems, you can reason it without equations. If Tom is 13 now, 2 years ago he was 11. If the total age of the two cats at that time was 15, then Tim was 15 -11 = 4.

That means Tim is now 4+2 = 6, so will be 9 in 3 years.

_____

Additional comment

If you want to write equations, there are several ways you can do it. We often like to use variables to represent the current age. We can assign ...

  x = Tim's current age; y = Tom's current age.

The sum of their ages 2 years ago was ...

  (x -2) +(y -2) = 15

Tom's current age is 13, so we have y=13. Using that in the equation gives ...

  x -2 +13 -2 = 15

  x = 6 . . . . . . . . . . subtract 9, collect terms

That's Tim's current age, so Tim will be 9 years old in 3 years.

Hello,

[tex]f(x)=x^3-4x^2-11x+30 \\\\f(0)=30[/tex]

so y-intercept is (0,30)

The product of the roots are -30 = 2 * 5 * -3, and the sum is 4 = 2 + 5 - 3 , so we can factorise

[tex]f(x)=x^3-4x^2-11x+30 \\\\f(x)=0 \\\\<=> x^3-4x^2-11x+30=(x+3)(x-2)(x-5)=0\\\\<=> x=-3 \ or \ x=2 \ or \ x=5[/tex]

x-intercepts are (-3,0) (2,0) and (5,0)

thanks

Answer:

See attached graph

Step-by-step explanation:

[tex]f(x)=\frac{1}{x}\\ \\g(x)=x+4\\\\(g\circ f)(x)=g(f(x))=g(\frac{1}{x})=\frac{1}{x}+4[/tex]

I cannot see all of the options, so I attached a graph of the correct graph for you to match up your options with.

Answer: perimeter = 26.8

              area = 49.16

Step-by-step explanation:

perimeter:

Rectangle one:

add 9.7 + 9.7 + 4 + 4 because there is 4 sides = 27.4

Rectangle 2:

2.8 + 2.8 + 3.7 +3.7 = 13

Add them together: 27.4 + 13 = 40.4

area :

rectangle one:

multiply 4 x 9.7 = 38.8

rectangle two:

multiply 3.7 x 2.8 = 10.36

add them together: 10.36 + 38.8 = 49.16

Answer:

c

Step-by-step explanation:

Answer:

7/2  but as a mixed number 3 1/2

Step-by-step explanation:

Answer:

3 1/2 or 3 3/6

Step-by-step explanation:

Answer:

9000000 seven

There are 9000000 seven-digit numbers.

Step-by-step explanation:

please mark me brainliest

Answer:

9000000 seven

Step-by-step explanation:

There are 9000000 seven-digit numbers.

Answer provided by Education Point

Answer:

Coordinate Plane (D)

Step-by-step explanation:

A Coordinate Plane is a two dimensional surface where you can graph points. Please let me know if I'm wrong, have a good day

Answer: 500

Step-by-step explanation: it increases and decrease in a pattern so -900+600= 300-600= -100+600=500

Answer:

405 pounds

Step-by-step explanation:

Answer:

1st Question is 22r4

2nd Question is 22r16

3rd Question is 11r11

4th Question is 11r30

Step-by-step explanation:

Hope this helps. I'll give you my energy.

Step-by-step explanation:

total number of animals on the farm is

900+700+500+300=2,400

angle for sheep will be

(700/2,400)*360=105°

Answer:

C. 29

Step-by-step explanation:

If the formatting should be [tex]\frac{\frac{5}{6} }{p} =\frac{\frac{2}{3} }{\frac{1}{2} }[/tex], then this should be correct.

Answer:

p = [tex]\frac{5}{8}[/tex]

Step-by-step explanation:

[tex]\frac{\frac{5}{6} }{p} =\frac{\frac{2}{3} }{\frac{1}{2} }[/tex]                 [Given]

[tex]\frac{5}{6} *\frac{1}{p} =\frac{\frac{2}{3} }{\frac{1}{2} }[/tex]            [Keep, change, and flip on the left side]

[tex]\frac{5}{6} *\frac{1}{p} =\frac{2}{3}*2}[/tex]       [Keep, change, and flip on the right side]

[tex]\frac{5}{6} *\frac{1}{p} =\frac{4}{3}}[/tex]            [Simplify the right side]

[tex]\frac{5}{6p}=\frac{4}{3}}[/tex]                [Simplify the left side]

6p * 4 = 5 * 3    [Cross multiply]

24p = 15            [Simplify]

p = [tex]\frac{15}{24}[/tex]                 [Divide both sides by 24]

p = [tex]\frac{15/3}{24/3}[/tex]              [Simplify the fraction]

   p = [tex]\frac{5}{8}[/tex]              [Answer]

To prove that the pizza fits inside the box we need the formula for the area of a square, to identify the area of the box and to know if the pizza fits inside the box.

To calculate the area of a square we must apply the following formula:

According to the above, if we have a pizza with a radius of 30cm, its area would be:

So we would need a box with a side length of at least 30cm. Its area would be:

30cm × 30cm = 900cm²

So for a 706.5cm² pizza, we need a 900cm² box.

Learn more about area in: https://brainly.com/question/16151549

Answer: 434 hours

Step-by-step explanation:

31(days) x 24(hours in a day) = 744

31(days) x 14(hours spent eating) = 434

Answer:

I came up with 434 hours for the month of July

Step-by-step explanation:

Well, you find the days of July which is 31, then multiply that by 14, the hours she spends eating a day.

I'm so sorry if it's wrong. Good luck!

Please mark brainliest!

Answer:

Its 60

Step-by-step explanation: 10x10=100 so 10x6=60

                                                Did that help you???

The area of one wall of the square room is 60 sq. feet.

The area of a square is the square of its side.

If the length of a side of a square is a unit, then its area is

Area = a² sq. units.

In the question, we are informed that a square room has a floor area of 100 sq. feet, and its height is 6 feet.

We are asked to find the area of one wall.

The floor of the room is given a square. We let the length of the side of that square be 'a' units.

Then, its area is a² sq. units.

We are given that the area of the floor is 100 sq. feet.

So, we can write the equation as:

a² = 100 sq. feet,

or, a = 10 feet.

The height of the room is given as 6 feet.

Therefore, the area of a wall is 10*6 sq. feet = 60 sq. feet.

As the floor is rectangular in shape, with dimensions 10 and 6.

Therefore, the area of one wall of the square room is 60 sq. feet.

Learn more about the area of a square at

https://brainly.com/question/26418430

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Answer:

300 miles

Step-by-step explanation:

200/2.1= 95.238...

95.238...*3.15=300

Hope this helps :)

The actual distance between City C and City​ D will be 300 miles.

Dilation is the process of increasing the size of an item without affecting its form. Depending on the scale factor, the object's size can be raised or lowered. There is no effect of dilation on the angle.

The distance between City A and City B is 200 miles. A length of 2.1 feet represents this distance on a certain wall map. Then the scale factor is given as,

Scale factor = 200 / 2.1 miles per foot

City C and City D are 3.15 feet apart on this map. Then the actual distance is given as,

Distance = 3.15 x 200 / 2.1

Distance = 1.5 x 200

Distance = 300 miles

The actual distance between City C and City​ D will be 300 miles.

More about the dilation link is given below.

https://brainly.com/question/2856466

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Answer:

59

Step-by-step explanation:

A is a 90 degree angle, we can see the other side is 31

so we subtract 90-31=59

Answer:?

Step-by-step explanation:

Answer:

Desmos Practice Worksheetdyh.astromirasole.it › desmos-practice-worksheet

Multiplying and Dividing Polynomials Worksheet Answer Key Poly Want a ... Desmos is a graphing calculator that can be accessed through any web ... Activity: Compound Inequalities on the Number Line

Using the normal distribution, it is found that:

a) 4.75% of drivers have a reaction time greater than 1.8 seconds.

b) The reaction time is of at least 1.73 seconds.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem, the mean and the standard deviation are given by, respectively:

[tex]\mu = 1.5, \sigma = 0.18[/tex]

Item a:

The proportion is one subtracted by the p-value of Z when X = 1.8, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{1.8 - 1.5}{0.18}[/tex]

[tex]Z = 1.67[/tex]

[tex]Z = 1.67[/tex] has a p-value of 0.9525.

1 - 0.9525 = 0.0475 = 4.75%.

4.75% of drivers have a reaction time greater than 1.8 seconds.

Item b:

The reaction time is of at least X seconds, in which X is the 90th percentile, that is, X when Z = 1.28, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.28 = \frac{X - 1.5}{0.18}[/tex]

[tex]X - 1.5 = 1.28(0.18)[/tex]

[tex]X = 1.73[/tex]

The reaction time is of at least 1.73 seconds.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

shade the area where circles overlap

Answer:

Shade the middle section.

Step-by-step explanation:

Venn-diagrams show what is the same or different. Adam does both chorus and singing lessons. The part of the diagram where the circles cross in the middle is what you would shade in because that section represents both chorus and singing lessons.

Answer:  Choice B) 14 degrees

Explanation:

Complementary angles add to 90 degrees

This means the answer we're after is 90 - (angle DEF) = 90-76 = 14

Answer is B

Complement means two angles that have the sum of 90°

90 - 76 = 14

so that would mean 14° is the correct answer

Answer:

2/5

Step-by-step explanation:

3*8=24, and 4*15=60,fraction now becomes 24/60 simplied by 12 (24/60 divide by 12 both factors) equals 2/5

Answer:

C

Step-by-step explanation:

Answer:

The answer your looking for is (most likely) C.

Step-by-step explanation:

If you had a mirror on the y-axis, the reflection of the pre-image triangle would be the image. The y-axis, called the line of reflection, is the line of symmetry for the two triangles. Triangle 1 is called the pre-image, and the reflected triangle is called the image.

Answer:

e,4,14

Step-by-step explanation:

The answer is e, 4 and 14.