Simplify:
8x4 – 3x – 7 = [?]
x=-1

Answer:

Step-by-step explanation:

[tex]A=6\cdot7-\frac12\cdot4\cdot4-2\cdot(\frac12\cdot3\cdot3)=42-8-9=25[/tex]

Answer:

A. 72π m^3

Step-by-step explanation:

The radius of the cone would be half the diameter, or 6m.

The formula for the volume of a cone is:

V= (πr^2h) / 3

We can substitute what we have:

V = (π * (6)^2 * 6 )/ 3

V = (216 π) / 3

V = 72π m^3

Compare to the slope intercept form of line y=mx+b

Slope

Hence slope is -4

Zeros:

x = -11

x = 11

Positive zero: 11

Answer:

x = 30

2x =60

Step-by-step explanation:

the angle is a right angle- so that means it’s a 90 degree angle

so let’s set up an equation..

We get 90 degrees when we add 2x Plus x

So 2x + x = 90

then, 3x = 90

x= 30

you Can check your Answer by:

Do 2 times 30 = 60

and then 60+ 30

you will Get 90

answer:

make sure to write "x" not as a variable

Step-by-step explanation:

6 x r + 9

Answer:

6(r+9)

Step-by-step explanation:

A number outside of a parenthesis is the symbol for multiplication.. so..

6(

"Sum" is the vocabulary used for "the answer you get after adding"

so.. you have to add..

6(r+9)

and close the parenthesis of course.:)

Answer:

F. 625

Step-by-step explanation:

625 times 2

= 1256

round it to

= 1250

Hope this Helps

Have a nice day

Answer:

0.73

Step-by-step explanation:

cost per meter for a roll of paper = total cost / total meter of rolls sold

Supplier x = 18.98 / 25 = 0.76

Supplier y = 21.89 / 30 = 0.73

supplier z = 29.59 / 40 = 0.74

the lowest per unit cost is 0.73

Answer:

50.

Step-by-step explanation:

I hope that this helped!!!

Answer: (0,10)

Step-by-step explanation:

Answer:

5x - 2 = 7

5x = 7 + 2

5x = 9 (divide both sides by 5 to get x)

5x/5 = 9/5

x = 1.8

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The diagonals of a rhombus are at right angles to each other, then

∠ 1 = ∠ 2 = ∠ 3 = 90° so

10x = 90 ( divide both sides by 10 )

x = 9

x + y = 90

9 + y = 90 ( subtract 9 from both sides )

y = 81

9z = 90 ( divide both sides by 9 )

z = 10

Answer:

- If a student studies for 6 hours, they will receive a grade of about 100.

- In general, the longer time spent studying, the higher the student's grade.

Step-by-step explanation:

Given

See attachment for plot

Required

Select all correct options

First, we determine the equation of best fit.

Pick two corresponding points on the plot

[tex](x_1,y_1) = (2,70)[/tex]

[tex](x_2,y_2) = (4,85)[/tex]

Calculate slope (m)

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

[tex]m = \frac{85 - 70}{4-2}[/tex]

[tex]m = \frac{15}{2}[/tex]

[tex]m = 7.5[/tex]

The equation is then calculated as:

[tex]y = m(x - x_1) + y_1[/tex]

This gives:

[tex]y = 7.5(x - 2) + 70[/tex]

[tex]y = 7.5x - 15 + 70[/tex]

[tex]y = 7.5x +55[/tex]

The above represents the line of best fit.

By comparison, (a) is incorrect

We calculate the slope to be:

[tex]m = 7.5[/tex]

Since the slope is positive, then the relationship is positive (b is incorrect)

Also, the positive slope implies that, as x increases, y also increase.

Hence, (d) is correct.

For (c), we substitute 6 for x in the calculated equation of best fit

[tex]y = 7.5x +55[/tex]

[tex]y = 7.5 * 6 + 55[/tex]

[tex]y = 45 + 55[/tex]

[tex]y = 100[/tex]

This shows that (c) is true because 6 hours of study gives a grade of 100

Answer:

15/182

Step-by-step explanation:

the 1st one is 5/14 and the 2nd one is 3/13

5/14*3/13 = 15/182

Answer:

the factor is 2 because 7x2 is 14 and 3x2 is 6

Answer:

6.2 would be ur awnser ( mark as best awnser

Answer:

B

Step-by-step explanation:

Took the test on AP3X

Answer:

B. Number cube

Let even number = classical

Let odd number = pop

Rollcube three times. Repeat

Step-by-step explanation:

Test approved

Answer:

3, 2, 6

Step-by-step explanation:

from left, top, and bottom

Answer:

2/6

Step-by-step explanation:

Convert 1/2 to something similar to 1/6

1 times 3 is 3

2 times 3 is 6

so now do 3/6 -1/6

Dont change the denominator at all, just subtract the numerator. By doing that you get 2/6

Answer:

X is about 58.41 degrees

Step-by-step explanation:

For this problem, lets use sine, since we have the opposite angle from x and we have the hypotenuse.

Therefore, with the equation for sine, we would get

sin(x) = 23/27

sin(x) = 0.851

Now, since we're solving for an angle, inverse it by adding a -1 to move over the sin.

x = sin-1 23/27

Last, use a calculator to get the answer.

X is about 58.41 degrees

Answer:

Option C

Step-by-step explanation:

Use the property to convert each expression from exponent form to radical form.

[tex](a)^{\frac{1}{n}}=\sqrt[n]{a}[/tex]

a). [tex](b)^{\frac{4}{5}}=(b^4)^\frac{4}{5}[/tex]

           [tex]=\sqrt[5]{b^4}[/tex]

b). [tex](8x)^\frac{2}{3}=[(8x)^2]^\frac{1}{3}[/tex]

              [tex]=[64x^2]^\frac{1}{3}[/tex]

              [tex]=[(4)^3x^2]^\frac{1}{3}[/tex]

              [tex]=(4^3)^\frac{1}{3}(x^2)^\frac{1}{3}[/tex]

              [tex]=4(x^2)^\frac{1}{3}[/tex]

              [tex]=4\sqrt[3]{x^2}[/tex]

Therefore, Option C will be the answer.

Answer: The probability of it is 1/6

Step-by-step explanation:

Answer:

Divide and then multiply the smaller ratio to get an equal ratio to the first one

Step-by-step explanation:

It helps a lot with algebra

Answer:

 Dilate circle A by a scale factor of 3. 

Step-by-step explanation:

In order to show if two triangles are similar you have to translate and dialate one of the triangles to compare it to the other one. So A and D are not it. The formula for C is incorrect so therefore the answer is B. Also i took the test :D

Answer:

answer is d

Step-by-step explanation:

Answer:

20 - 29

Step-by-step explanation:

Please find the complete question in the attached image

An histogram is a bar-like graph used to represent numerical data. On the y-axis is the frequency of the data and on the x-axis is the data

median is a measure of central tendency. It measures the middle number in a set of observation

there are 20 observations (visitors),

1, 2, 3,5,6, 7, 8, 9,| 10, 11, | 12,13,14,15,16,17,18,19,20

the median is 10 and 11 or 10.50

there are 9 numbers on either sides of 10 and 11

the 10th and 11th visitor would be found in the age group 20 - 29

Answer:

The probability that both balls are red is 5.81%, that one is red and one black is 38.36%, and that both are black 55.81%.

Step-by-step explanation:

Given that a box contains 44 table tennis balls having the same shape and size, and among them 33 are black and remaining balls are red, if two balls are drawn randomly one after another without replacement, to show the probability of all possible outcomes the following calculations must be done:

Red + red:

11/44 + 10/43 = 0.25 x 0.2325 = 0.0581

Red + black:

11/44 + 33/43 = 0.25 x 0.7674 = 0.1918

Black + red:

33/44 + 11/43 = 0.75 x 0.2558 = 0.1918

Black + black:

33/44 + 32/43 = 0.75 x 0.7441 = 0.5581

19.18 x 2 = 38.36

Therefore, the probability that both balls are red is 5.81%, that one is red and one black is 38.36%, and that both are black 55.81%.

Answer:

c

Step-by-step explanation:

Answer:

[tex]4x \times 448[/tex]

Step-by-step explanation:

A=

[tex]a = (x - 16)[/tex]

[tex]b = (3x + 28)[/tex]

So you add :

[tex]x \: and3x[/tex]

To get

[tex]4x[/tex]

Then you do :

[tex]16 \times 28[/tex]

To get :

[tex]448[/tex]

Answer is :

[tex]4x \times 448[/tex]