10) How old am lif 300 reduced by 2 times my age is 106?
11) Callie was making note cards. On her way to her room she found
six more note cards to use. In her room she cut each note card in
half. When she was done she had 46 half-note cards. With how
many note cards did she start?
12) Gracy spent half of her weekly allowance on clothes. To earn
more money her parents let her wash the dog for $14.08. What is
her weekly allowance if she ended with $23.42?

Answer:

jim is correct, x does equal 7°. justify your answer by putting seven back into the equation. it gives you back that 180 equals 180, therefore it is correct

Step-by-step explanation:

so, all angles of a triangle have to add up to 180;

(15x) + (8x - 11) + (3x + 9) = 180

15x + 8x - 11 + 3x + 9 = 180

add your common numbers

26x - 2 = 180

add 2

26x = 182

divide 26

x = 7

put it back into the equation

15(7) + 8(7) - 11 + 3(7) + 9 = 180

180 = 180

Basically, in a function, you draw a vertical line. If that vertical line crosses the function more than once, then it is an invalid function.

Let me know if you need an example and I'll edit a picture in for you.

Answer:

A vertical line test is used to find out whether if a curve is a graph of a function or not.  If you are able to draw a vertical line, and it intersects more than one point on the curve, then it is not a function.

Step-by-step explanation:

Answer:

the formula = y = mx+c,

if slope is -5 and y intercept is 8,

y = -5x+8

or

y= 8-5x

Answer:

103 and 102

Step-by-step explanation:

u add them together

Answer:

1.7 m/s

Step-by-step explanation:

1/3 mile = 536 m

1/12 hour = 5 minutes = 300 second

volecity = s/t = 536 / 300 = 1.7 m/s

9514 1404 393

Answer:

  4 miles per hour

Step-by-step explanation:

Speed is the ratio of distance to time:

  speed = miles/hours = (1/3)/(1/12) = (4/12)/(1/12) = 4/1 = 4

Mr. M's walking speed is 4 miles per hour.

Answer:

8π(2.5)^2

Step-by-step explanation:

volume = π * r^2 * h

v = π * (2.5)^2 * 8

Answer:

60:70

Step-by-step explanation:

[tex] \frac{60}{x} = \frac{6}{7} \\ \\ 60 \times \frac{7}{6} = x \\ \\ 70 = x[/tex]

number of cupcakes lynn made = x

number of cupcakes santo baked = 2x - 4

hope this helps and please mark me brainliesr. PLEASE!!!!

Answer:

40%

Step-by-step explanation:

Given that :

Number of people surveyed = 2500

Number of satisfied buyers = 1000

Thus, the percentage of satisfied buyers :

(Satisfied buyers / total surveyed) * 100%

(1000 / 2500) * 100%

0.4 * 100 = 40%

40% of people surveyed were satisfied

Answer: 248 boxes

Step-by-step explanation:

They produce boxes at a rate of 52 boxes an hour yet after only 3 hours they had 404 boxes.

The number they were supposed to have in 3 hours is:

= 52 * 3

= 156 boxes

They instead had 404 so the rest must have been there when they opened:

= 404 - 156

= 248 boxes

Answer:

-n - 9

Step-by-step explanation:

3n and -4n added will just equal to -1n or -n.  Add 1 from -10 to get -9.  Your final answer should be -n - 9.

Answer:

-n-9

Step-by-step explanation:

3n-10+1-4n

(3n-4n)+(-10+1)

-n-9

Answer:

Step-by-step explanation:

Exercise 1

16/24

Exercise 2

3:6

Exercise 3

5:3

Exercise 4

3:20

Exercise 5

10:3

Answer:

7). x = 6, [tex]\frac{14}{3}[/tex]

8). x = 2

Step-by-step explanation:

7). Area of a circle = πr²

   Here 'r' = radius of the circle

Area of the shaded region of the circle = Area of the large circle - Area of the small circle

                                                                 = π(x)² - [tex]\pi (\frac{x}{2})^2[/tex]

                                                                 = [tex]\pi x^{2} -\pi (\frac{x^2}{4})[/tex]

                                                                 = [tex]\pi x^{2}(1-\frac{1}{4})[/tex]

                                                                 = [tex]\frac{3\pi x^{2} }{4}[/tex] in²

If area of the shaded region is (8πx - 21π) in²

[tex]\frac{3\pi x^{2} }{4}=8\pi x - 21\pi[/tex]

[tex]\frac{3x^2}{4}=8x-21[/tex]

3x² = 32x - 84

3x²- 32x + 84 = 0

3x² - 14x - 18x + 84 = 0

x(3x - 14) - 6(3x - 14) = 0

(x - 6)(3x - 14) = 0

x = 6, [tex]\frac{14}{3}[/tex]

8). Area of the shaded region = Area of the largest circle - Area of the smaller semicircle - Area of the smallest semicircle

Area of the largest circle = π(2x + 2x)²

                                         = 16πx²

Area of the smaller semicircle = [tex]\frac{1}{2}\pi (3x)^{2}[/tex]

                                                  = 4.5(πx²)

Area of the smallest semicircle = [tex]\frac{1}{2}\pi (2x)^{2}[/tex]

                                                    = 2πx²

Now area of he shaded region = 16πx² - [4.5(πx²) + 2πx²]

                                                    = 16πx² - 6.5πx²

                                                    = 9.5πx² mm²

If the area of the shaded region = 12πx + 14π

12πx + 14π = 9.5πx²

12x + 14 = 9.5x²

9.5x² - 12x - 14 = 0

19x² - 24x - 28 = 0

19x² - 38x + 14x - 28 = 0

19x(x - 2) + 14(x - 2) = 0

(19x + 14)(x - 2) = 0

x = [tex]-\frac{14}{19},2[/tex]

But the radius o a circle can't be negative.

Therefore, x = 2 will be the answer.

Answer:

x = 25

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

2x + 3x + 55 = 180, that is

5x + 55 = 180 ( subtract 55 from both sides )

5x = 125 ( divide both sides by 5 )

x = 25

Answer:

y = 5

x = 1

Step-by-step explanation:

y = 3x + 2

-4x + 4(3x+2)=16

y=3x+2

-4x+(4*3x+4*2)=16

x = 1

y = 5

Answer:

x-coordinate = 1

y-coordinate = 5

Step-by-step explanation:

By using the substitution method, we substitute either x-term or y-term in any equation.

the term must be only the subject in order to substitute in.

Our equation that has only the subject is the first equation.

Substitute y = 3x+2 in the second equation.

[tex] - 4x + 4(3x + 2) = 16[/tex]

Distribute 4 in 3x+2

[tex] - 4x + 12x + 8 = 16[/tex]

The constant cannot add up or subtract with the variable. Therefore, move 8 to subtract 16 on another side.

[tex]12x - 4x = 16 - 8 \\ 8x = 8[/tex]

Move 8 to divide 8 on the another side.

[tex]x = \frac{8}{8} \\ x = 1[/tex]

Our next goal is to find the y-value by substituting x = 1 in any given equation.

I will substitute x = 1 in the first equation. (You can substitute in the second equation if you want.)

[tex]y = 3(1) + 2 \\ y = 3 + 2 \\ y = 5[/tex]

Answer Check

Checking is to make sure that we have got the right answer. We can check the answer by substituting y-value and x-value in both equations.

[tex]x = 1 \\ y = 5[/tex]

First Equation Check

[tex]5 = 3(1) + 2 \\ 5 = 3 + 2 \\ 5 = 5[/tex]

The equation is true. Therefore, the answer is correct for first equation.

Second Equation Check

[tex] - 4(1) + 4(5) = 16 \\ - 4 + 20 = 16 \\ 16 = 16[/tex]

The equation is true. Both equations are true for x = 1 and y = 5.

Therefore, the answer is (1,5)

Answer:70%

Step-by-step explanation: 30 + 40 grams = 70

70 Grams

Answer:

these all are in browser u can get them from searching in browser

Answer: 70%

Step-by-step explanation:

Based on the information, we told that 14 members voted in the election and 6 did not vote. There, the total number of members is 6 + 14 = 20.

The percentage of the members that voted will be:

= 14/20 × 100

= 70%

Answer:

It's 0

Step-by-step explanation:

Answer:

It should be 28.35

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

Answer:

Step-by-step explanation:

inside angle = 180 = 2x + 2x + 20 + 3x - 10 + 2x - 10

substitute the value of x = 20 into angle L, M, N, P

L = 2x + 20

L = 2(20) + 20

M = 3x - 10

M = 3(20) - 10

N = 2x - 10

N = 2(20) - 10

P = 2x

P = 2(20)

∠L + ∠M + ∠N + P = 180

60° + 50° + 30° + 40° = 180

9514 1404 393

Answer:

  138°

Step-by-step explanation:

The angles of the linear pair are supplementary.

  ∠MLO = 180° -∠MLJ = 180° -42°

  ∠MLO = 138°

Answer:

angle MLO =180° - angle MLJ =(180°-42°)= 138°

Answer:

5:3=8

120. 120÷8=15

5×15=75. 3×15=45

there are 45 children

Answer:

6h

Step-by-step explanation:

1 per 10 minutes

that means 6 per hour

Answer:

there are 97 + 47 + 77 = 221 creatures from Earth in the alien spaceship.

the probability that a human being is chosen at random = 77 / 221 = 0.3484 = 34.84%

the probability that a chicken is chosen at random = 97 / 221 = 0.4389 = 43.89%

the probability of choosing a cow at random = 100% - 34.84% - 43.89% = 21.27%

Answer:

0.44

Response 2

0.21

Response 3

0.35

Step-by-step explanation: