Please I need help,this is my little brother class

Answer:

3

Step-by-step explanation:

5x-2=3x+4

5x-3x=4+2

2x=6

x=3

Answer:

25=10+w

Because the value of w that makes the equation true is

w=25_10

w=15

Answer:

Step-by-step explanation:

Answer:

$79.08

Step-by-step explanation:

Find 20% of 65.90. 20% as a decimal is 0.20. Multiply 0.2 and 65.90.

65.90 x 0.20 = 13.18

Add 13.18 to the original price.

13.18 + 65.90 = 79.08

Answer:

18 inches, assuming that the height is the length of the TV screen.

Step-by-step explanation:

First off, the shape of a TV screen is a rectangle.

To get the area of a rectangle, the equation would be:

H * W = A

where H = height, W = Width, and A = area.

If we pluck in the values given in the question, we get:

H * 32 = 576

To find out H, we have to get rid of the 32.

To do that, we divide both sides by 32.

Therefore, the equation is now:

H = 18.

Thus, the height of the TV screen is 18 inches.

Answer: h = 18 inches

Step-by-step explanation:

Answer:

a.) since he already has 40 in his savings account, start the line at (0,40) on the y-axis and then go up 15 every hour

b.) 15 or 15/1

c.) for each hour Donny spends working, the amount of money he has go up by 15

d.) (0,40)

e.) the vertical intercept or (y-intercept) is (0,40) because this is how much money Donny already has in savings

Answer:

Step-by-step explanation:

Answer:

2d(d - 4)

Step-by-step explanation:

Given

2d² - 8d ← factor out the common factor of 2d from each term

= 2d(d - 4) ← in factored form

Answer:

(- 3.5, 0.5 )

Step-by-step explanation:

Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is

( [tex]\frac{x_{1}+x_{2} }{2}[/tex], [tex]\frac{y_{1}+y_{2} }{2}[/tex] )

Here (x₁, y₁ ) = (- 3, - 1) and (x₂, y₂ ) = (- 4, 2) , then

midpoint = ( [tex]\frac{-3-4}{2}[/tex], [tex]\frac{-1+2}{2}[/tex] ) = ( [tex]\frac{-7}{2}[/tex], [tex]\frac{1}{2}[/tex] ) = (- 3.5, 0.5 )

Answer:

$200. had to edit, read the question wrong originally

=======================================================

Work Shown:

If you save 64%, then you still have to pay the remaining 100% - 64% = 36%

x = original price in dollars

sale price = 36% of x = 0.36*x = 72

0.36*x = 72

x = 72/0.36

x = 200

The original price is $200

discount = 64% of 200 = 0.64*200 = 128

You save $128

The amount you pay is 200-128 = 72 dollars, which matches with the given sale price.

Step-by-step explanation:

the answer is

[tex] \sqrt{136} [/tex]

..................

if it feels wrong

be free to correct ....

Answer:

1,966 I think

Step-by-step explanation:

Answer:

982.5

Step-by-step explanation:

Always do the parenthesis first

1/2 * 1, 341 + 1/2 * 625

670 + 312.5

982.5

Answer:

[tex]y=\frac{-2}{3} x+1[/tex]

Step-by-step explanation:

Linear equations are typically organized in slope-intercept form: [tex]y=mx+b[/tex]. Here's what the variables mean:

y = the y-coordinate

m = the slope

x = the x=coordinate

b = the y-intercept (what y is equal to when the line crosses the y-axis)

First, we need to calculate the slope of the line (m). The slope is the [tex]\frac{rise}{run}[/tex] of the line, or in other words, the change in y over the change in x. We can find this by just looking at the graph, between the two given points. For 3 spaces the line travels to the right, it travels downward 2 spaces. Therefore, the slope of the line is [tex]\frac{-2}{3}[/tex].

We can also calculate this using the formula [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] by using two points that fall on the line, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. Here, we can use the points (-3,3) and (0,1).

[tex]\frac{y_2-y_1}{x_2-x_1}\\\frac{1-3}{0-(-3)}[/tex]

Two negatives make a positive

[tex]=\frac{1-3}{0+3}\\=\frac{-2}{3}[/tex]

Then, we need to find the y-intercept of the line (b). We can find this by, again, looking at the graph. The line crosses the y-axis when y is equal to 1, so the y-intercept of the line is 1.

Now, we plug our calculated values back into the original equation:

[tex]y=mx+b\\y=\frac{-2}{3} x+1[/tex]

I hope this helps!

Answer:

V = 1200π

Step-by-step explanation:

Volume of a cylinder formula:

Let's find the height of the cylinder by multiplying 20 cm by 3/5.

The radius is 1/2 of the diameter, so:

Substitute 12 for h and 10 for r into the volume formula.

Simplify.

The volume of a cylinder, in terms of π, is V = 1200π.

Answer:

10 ( 12p - 6k)

Step-by-step explanation:

4p x 3 = 12p

2k x 3 = 6k

you cannot subtract 12p and 6k bcuz they do not have the same variables.

Answer:

3/10

Step-by-step explanation:

2/3 of 9= 6. So 2/3 of the 9/10=3/10

Answer:

they look good lol

Step-by-step explanation:

Answer:

Ab=ba that one is multiplication I believe

Answer:

-96

Step-by-step explanation:

multiply both sides by 16

Answer:

755.16 cm³

Step-by-step explanation:

We can separate this into two parts -- the bottom rectangular prism and the top triangular prism.

The volume of the bottom part is 12*4*14 = 672 cm³

For the triangular prism, we have an equilateral triangle, with sides 4cm, as well as a length of 12cm. We can find the area of the triangle and multiply it by 12 for our answer. The area of an equilateral triangle is [tex]\frac{\sqrt{3} }{4} 4^{2}[/tex], which is approximately 6.83 -- we can multiply that by 12 to get 83.16 cm³

Add these 2 up to get 755.16 cm³ as our answer

Answer:

85x7+ 25.50x4  

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

The solid produced by rotating the figure around the given axis is a cone.

Step-by-step explanation:

A solid is a 3-dimensional structure obtained by rotating the 2-dimensional figure at a given axis.

The line or axis at which the given figure is rotated is known as the axis of revolution.

Given:

A right-angle triangle

To find :

Solid produced by rotating the given figure.

Solution:

When we rotate the given figure as shown in the image, we will obtain a solid known as a cone.

The solid produced by rotating the figure around the given axis is a cone.

Learn more about solid here:

brainly.com/question/3845281?referrer=searchResults

Answer:100$-100%               100*12.5=1250

                                                    1250/100=12.5

                 ?-12.5%

Step-by-step explanation:

Answer:

[tex]{ \tt{12.5\% \: of \: \$ \: 100}}[/tex]

Convert 12.5% into fraction. To convert a percentage to a fraction , divide it by 100.

⟿ [tex] \tt \frac{12.5}{100} \times 100[/tex]

⟿ [tex] \tt{12.5}[/tex]

[tex] \boxed{ \boxed{ \tt{Our \: final \: answer : 12.5} }}[/tex]

Hope I helped ! ♪

Have a wonderful day / night ! ツ

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Answer:

1.) A      2.) B

Step-by-step explanation:

Formula: a^2+b^2=c^2

4^2+3^2=5^2

Proof:

4^2=16

3^2=9

9+16=25

5^2=25

Answer:

Step-by-step explanation:

That’s the answer (the pic)

Answer:

167.8

Step-by-step explanation:

Answer: 167.8

Step-by-step explanation: