Pre college I need help (12)

Answer:

A=2285.71428571 or rounded up is 2286

Step-by-step explanation:

7A=16000

7.        7

A=2286

Divide 7A to get A alone

:D hope i was able to help

Answer:

10.4

Step-by-step explanation:

Let the number be x

Sum of  x  and -3.2 : x + (-3.2) = x - 3.2

1/4 times the sum of a number and −3.2 = (1/4) * (x - 3.2)

[tex]\dfrac{1}{4}* \left( x - 3.2 \right) = 1.8\\\\\Multiply \ the \ whole \ equation \ by \ 4 \\\\4*\dfrac{1}{4} *(x - 3.2) = 1.8*4\\\\\\x - 3.2 = 7.2\\\\Add \ 3.2 \ to \ both \ sides\\\\\\x = 7.2 + 3.2\\[/tex]

x = 10.4

Answer:

10.4

ANSWER:

(10 2/5)

Step-by-step explanation:

k12

Answer:

The X would have to be 12!

Step-by-step explanation:

Because 2/3 is 6, 6 x 2 = 12 - 6 = 6

Answer:

15

Step-by-step explanation:

Using gemdas you would have to work in the parenthesis first and 15-6 is 9 multiplied by 2/3 is 6

Answer:

0.05 is a terminating decimal

Step-by-step explanation:

0.05 is a terminating decimal because it has finite digits.

Answer:

a terminating decimal

Step-by-step explanation:

it has finite digits and when 1 is divided by 20, it leaves no remainder

mark me brainliest :D

Answer:

y = 1/2x + 7

Step-by-step explanation:

y= mx + b is written in slope- intercept form. Plug in the numbers.

you distribute 1/2 to x and to 8

y= 1/2x + 4 + 3

simplify

y= 1/2x + 7

the problem can't be anymore simplified

If you have any questions pls ask!

Answer:

It was wrong but here is the correct answer

Step-by-step explanation:

Answer: I'm really late but here you go

Step-by-step explanation:

Answer:

What equation?

Step-by-step explanation:

Answer:

Step-by-step explanation:

y = mx + b

m = Δy/Δx = (9 - 9) / (8 - 4) = 0

y = 9

is a horizontal line nine units above the x axis.

choose any 3

(-3, 9) (-2, 9) (-1, 9) (0, 9) (1, 9) (2, 9) (3, 9) (4, 9) (5, 9) (6, 9) (7, 9)

Answer:

15 feet per minute.

Step-by-step explanation:

Answer:

x-intercept: (1, 0)

Step-by-step explanation:

The x-intercept is the point on the graph where it crosses the x-axis, and has coordinates, (a, 0).  Looking at the two points on the graph, one of them crosses the x-axis at point (1, 0). This represents the x-intercept of the line.

Therefore, the x-intercept of the line is (1, 0).

Answer:

A. [tex]\frac{rs-t}{2}[/tex]

Step-by-step explanation:

Given the expression [tex]s = \frac{2x+t}{r}[/tex] isolate [tex]x[/tex]

The first step is multiply both sides by [tex]r[/tex] then you have

[tex]sr = 2x + t[/tex]

know substract both sides by [tex]t[/tex]

[tex]sr - t = 2x[/tex]

The last step is multiply by [tex]\frac{1}{2}[/tex] both sides of the equation and get the answer

[tex]\frac{sr - t }{2} = x[/tex]

Answer: 120,000

Step-by-step explanation:  

10,000 x 12 = 120,000

Answer: 17

Step-by-step explanation:

22-5=17

Answer:

All triangles measure 180 degrees. Angle B in Triangle BCD is congruent to angle D in triangle ABD. Angle D in triangle BCD is congruent with Angle B in triangle ABD.

Given these statements M<C= 50 degrees

Step-by-step explanation:

68+62=130

180-130=50

m<C= 50

Answer:

16%

Step-by-step explanation:

If you do 8+42, you will find out there are 50 members. Do 8/50 and you get 0.16. Multiply it by 100 and you get your answer of 16, add the percentage at the end. Then you get your answer of 16%.

Answer:

16%

Step-by-step explanation:

Total members: 8+42 = 50

What percentage is 8 of 50

x/100 = 8/50

(8 * 100) / 50 = 16%

Answer:

Mark me as brainlist

Step-by-step explanation:

a) (h + 5)(2h + 8) is the expression for the combined area of the painting and frame

b) The combined area when h = 12 is 544 square inches

c) The combined area when h = 15 is 760 square inches

Solution:

Given that,

A frame that is 2.5 inches wide goes around the painting

The frame will go around all 4 sides of the painting.

That means that the length of each side of the painting will increase by 2.5 inches

Therefore,

The height of painting and frame is:

h = h + 2.5 + 2.5

h = h + 5

(2.5  inches on the top and the bottom)

Also given that,

Width of a rectangular painting is 3 inches more than twice the height

w = 3 + 2h

Now the width of painting and frame is:

w = 3 + 2h + 2.5 + 2.5

(Again, 2.5 inches on the top and the bottom)

w = 2h + 8

Thus the combined area of the painting and frame is:

B) Substitute h = 12 inches

Thus the combined area when h = 12 is 544 square inches

C) Substitute h = 15 inches

Thus combined area when h = 15 is 760 square inches

Testing the hypothesis using the z-distribution, it is found that since the p-value of the test is of 0.0262 < 0.05, it can be concluded that the new booklet is effective.

At the null hypothesis, we test if there has been no improvement, that is, the time is still of 3 hours. Hence:

[tex]H_0: \mu = 3[/tex]

At the alternative hypothesis, we test if there has been improvement, that is, the time is of less than 3 hours. Thus:

[tex]H_1: \mu < 3[/tex]

We have the standard deviation for the population, thus, the z-distribution is used. The test statistic is given by:

[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

The parameters are:

In this problem, the values of the parameters are: [tex]\mu = 3, \sigma = 0.2, \overline{x} = 2.9, n = 15[/tex].

Then, the value of the test statistic is:

[tex]z = \frac{2.9 - 3}{\frac{0.2}{\sqrt{15}}}[/tex]

[tex]z = -1.94[/tex]

The p-value of the test is the probability of finding a sample mean of 2.9 hours or less, which is the p-value of z = -1.94.

Looking at the z-table, z = -1.94 has a p-value of 0.0262.

Since the p-value of the test is of 0.0262 < 0.05, it can be concluded that the new booklet is effective.

A similar problem is given at https://brainly.com/question/25413422

Answer:

x=5, z=107

Step-by-step explanation:

z=107 (vert opp angles)

   z+13x+8=180 (adj angles on a str line)

107+13x+8=180

    13x+115=180

           13x=180-115

                =65

              x=65÷13

                =5

Answer:

Step-by-step explanation:

According to the given:

Substitute m∠5 into the first line to get line 3:

This is option B:

Option C

This is substitution property of inequality

Here given two expressions

Substitute m<5 in eq(1)

Answer:

x + 3y = 55

-x -x

3y = -x + 55

3 3

y = -1/3x + 55/3

-x + 2y = 20

+x +x

2y = x + 20

2 2

y = 1/2x + 10

Espero que esto ayude :)

Por cierto, no soy un hablante nativo de español.

Answer:

See Below

Step-by-step explanation:

<4 and <8 are in corresponding positions in relations to the lines' intersection of the transversal, therefore they are corresponding angles.

<1 and <8 are on the outside, meaning they are exterior and on opposite sides. This means they are alternate exterior angles.

<1 and <5 are in corresponding positions in relations to the lines' intersection of the transversal, therefore they are corresponding angles.

<4 and <7  are on the inside, meaning they are interior and on the same side. This means they are same side interior angles.

Answer: x = 1

Explanation: Correct me if I'm wrong

There is 1.70% that 50 homes have a value greater than $83,500.

Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

[tex]z=\frac{x-\mu}{\sigma/\sqrt{n} } \\\\where\ x=raw\ score,\mu=mean,\sigma=standard \ deviation,n=sample\ size[/tex]

μ = $82000, σ = 5000, n = 50. Hence for x > 83500:

[tex]z=\frac{83500-82000}{5000/\sqrt{50} }\\\\\\z=2.12[/tex]

From the normal distribution table, P(x > 83500) = P(z > 2.12) = 1 - P(z < 2.12) = 1 - 0.9830 = 0.0170 = 1.70%

Find out more at: https://brainly.com/question/7449180

Answer:

4

Step-by-step explanation:

its 4 because you have to convert ounces to pounds or pounds to ounces.

Answer:

4

Step-by-step explanation:

when we count ounces(Oz) to pound (ib) we should do

IB=Oz/16

IB=64/16

=4 this is your answer

Answer:

68 inches

Step-by-step explanation:

its sixty eight inches