Evaluate 1/2m - 2/3n when m = 3 and n = 8.


A) -23/6

B) 41/6

C) -19/6

D) 2

Answer:

about 4.17 hours

Step-by-step explanation:

To solve the time for each class, you do 2.5 hours divided by 3. Then you take this value and multiply by 5 since there are 5 classes. After you do this, you should get 4.17 hours roughly.

Answer:

98

Step-by-step explanation:

(2a + [tex]\frac{1}{2a}[/tex] )² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] , thus

10² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] ( subtract 2 from both sides )

100 - 2 = 4a² + [tex]\frac{1}{4a^2}[/tex] , that is

4a² + [tex]\frac{1}{4a^2}[/tex] = 98

Answer:

-9*-20/-12=-15

Step-by-step explanation:

Answer:

[tex] \boxed{ \frac{cd}{e} = - 15} [/tex]

Given:

[tex]c = - 9 \\ d = - 20 \\ e = - 12[/tex]

Step-by-step explanation:

[tex] = > \frac{cd}{e} \\ \\ = > \frac{( - 9)( - 20)}{( - 12)} \\ \\ = > \frac{9 \times 20}{( - 12)} \\ \\ = > - \frac{180}{12} \\ \\ = > - 15[/tex]

Answer:

Missing value is -4/3 and whole solution can be written as  ( 8,-4/3)

Step-by-step explanation:

Given equation 2x+3y=12

solution ( 8,)

solution is form (x,y) hence in (8,) x is given as 8 while y  is missing to find y

we will plug 8 as value of x in equation  2x+3y=12. From this equation we will find the missing value.

2x+3y=12

=> 2*8+3y=12

=> 16 + 3y = 12

=> 3y = 12-16= -4

=> y = -4/3

Thus, missing value is -4/3 and whole solution can be written as  ( 8,-4/3)

Answer:

T

Step-by-step explanation:

Because the point (3,-5) is simply the point with coordinates (-3,-5) reflected on the y-axis.

Answer:

T

Step-by-step explanation:

(3, - 5) is represented by point T.

Answer:

Here

Step-by-step explanation: You may need to add how many cups of flour into a cake freehand to do this you may need to test numbers adding and subtracting witch is a two step probelem, And you can also need to devide a multiplication probelem to divide something.. so there is my explaination!

the value of x is 2.7.

i hope it will help you

THANK YOU

Answer:

[tex]x=5/7[/tex]

Step-by-step explanation:

[tex]7^{4x} =\frac{7^{5} }{7^{3x} }[/tex]

[tex]7^{4x} *7^{3x}=7^{5}[/tex]

[tex]7^{7x} =7^{5}[/tex]

[tex]7x=5[/tex]

[tex]x=5/7[/tex]

Answer:

x=5/7

Step-by-step explanation:

Answer:

w⁴ - 36

=> ( w² )² - ( 6 )²

=> ( w² + 6 ) ( w² - 6 )

=> w² + 6 = 0 and w² - 6 = 0

=> w = √-6 and w = √6

The value of w is √-6 and √6 .

An identity is an equation that is true for all values of the variables.

For example:

The above equation is true for all possible values of x and y, so it is called an identity.

According to question one such identity will be used

[tex]a^{2} - b^{2} = (a+b)(a-b)[/tex]

w⁴ - 36

= ( w² )² - ( 6 )²

= ( w² + 6 ) ( w² - 6 )

= w² + 6 = 0 and w² - 6 = 0

= w = √-6 and w = √6

Hence, w is a quadratic term so it have two value √-6 , √6 .

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Answer:

[tex]x = 7[/tex]

Step-by-step explanation:

[tex]2x + 5 = 3x - 2 \\ 2x - 3x = - 5 - 2 \\ - x = - 7 \\ x = 7 \: \: degrees[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

____________________________________

Hey!!

2x+5=3x-2(being vertically opposite angles)

or,2x-3x=-2-5

or,-x=-7

X=7

So the value of X is 7.

Hope it helps

Good luck on your assignment

Stay safe...

___________________________________

Answer:

1/13

Step-by-step explanation:

There are 4 king cards:

King of Hearts

King of Diamonds

King of Clover

King of Spades

This is 4 cards in a standard deck of 52. Set as a fraction 4/52.

Simplify:

(4/52)/(4/4) = 1/13

1/13 is the probability of drawing a KIng card.

~

Answer:

58°

Step-by-step explanation:

subtract 32 from 90 and you get the measure of x°

hope this helps

Answer:

58°

Step-by-step explanation:

Since it is 90° angle and one side of the angle is given as 32° , inorder to get the value of angle x we must subtract the given angle that is 32°from 90°by default. Then we will get the value of x as 58°.

plzz mark brianliest

hope it help yuh..

Answer:

6 hours

Step-by-step explanation:

18-3= 15 degrees different between noon temperature and  the reached one

15/2.5 = 6

Answer:

A

Step-by-step explanation:

E2021

Answer:

It would be 0.125

Step-by-step explanation:

I hope this helps you.

Answer:

The next step is to find the point on the circle which makes a tangent line that passes through the outside point.

Step-by-step explanation:

A tangent line to a circle is a line that touches the circle at exactly one point. You need two points to draw a line. You already have one point and the circle, then you need the other point, which lies on the circle. These two points have to lie on the same line. Notice that there are two possible tangent lines.

Answer:

connect the center of the circle to the point outside the circle

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

total rolls = 10+6+4+8+6+6 = 40

P(3 or 6) = number of 3's or 6's / total

                = (4+ 6) / 40

                = 10/40

                =1/4

Answer:BCA

Step-by-step explanation:

Answer:

A and C

Step-by-step explanation:

hope i am right

Answer:

Interpreting as: 2(a+b)=-8.1

Input:

2 (a + b) = -8.1

In Given the expression

                               2( a + b) = 8.1  ..........................(1)

now divide both sides of the first equation by 2 ,

                         2 (a + b) /2 = 8.1 /2

                        (a + b) = 4.05

expression    -0.5(a + b) ................(2)

 simply put the value of (a + b) in (2),

                          - 0. 5( 4.05) = -0.5 * 4.05

                                          = 2.025

Value of expression is 2.025.

An expression is a set of terms combined using the operations +, – , x .

For example - 4 x − 3 or x 2 – x y + 17 .

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Answer:

64pi

Step-by-step explanation:

To find the raidus we divide the diameter by 2

Radius = 16/2 = 8

Area = pi*8^2 = 64pi

Answer:

64pi

Step-by-step explanation:

Answer:

( 0,-8) is the y intercept

Step-by-step explanation:

y = -3x -8

This is in slope intercept form

y = mx+b where m is the slope and b is the y intercept

-3 is the slope and -8 is the y intercept

( 0,-8) is the y intercept

Answer:

Step-by-step explanation:

r = 6 ft

Volume of cylinder = 1808.64 cubic ft

πr²h =1808.64

3.14 * 6 * 6 *  h =1808.64

  113.04* h =1808.64

              [tex]h=\frac{1808.64}{113.04}\\[/tex]

             h = 16 ft

Answer: x=-34.13

Step-by-step explanation:

This problems seems to ask you to solve for x. You want to get like terms on the same side and solve for x.

5x-23=45²+65x

5x-23=2025+65x

-60x=2048

x=-34.13

Answer:

b

Step-by-step explanation:

[tex]\sqrt{64}[/tex]=±8

Answer:

B. -8 and 8

Step-by-step explanation:

To solve this equation, we need to get x by itself. To do this, perform the opposite of what is being done to the equation. Keep in mind everything must be done to both sides of the equation.

x^2=64

x is being squared. The opposite of being squared is taking the square root. Take the square root of both sides.

√x^2=√64

The exponent and square root on the left will cancel, and x will be left by itself.

x=√64

x=±8

The solutions of the equation are x=8 and x= -8

Therefore, the answer is B. -8, 8

Answer: 20 servings

Step-by-step explanation:

From the question, Sara is having a dinner party for four friends and she needs to reduce the serving size of the meatloaf recipe. Sara used the equation x/4=5 . To get the number of servings the recipe originally made, we have to find the value of x.

x/4 = 5

x = 4 × 5

x = 20

This means that the recipe that was used originally made 20 servings.

Answer: D. 20 servings

Step-by-step explanation: I got it right on edge

Answer:

7

Step-by-step explanation:

Just multiply all numbers together.

Plz give me brainliest

Answer:

It would be D

ƒ(x) = 20,000 * (0.93) ^ x

Where ^x means to the power of x

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

5/8 y-3/8 y + 2y=

2/8 y +2y     common denominator

2/8 y + 16/8 y =

18/8 y =9/4 y

Answer:

D.

Step-by-step explanation:

area of a square = side^2

area of a cube = 6 x side^2

let the side be a .

6a^2 = 600

=> a^2 = 600/6

=> a^2 = 100

Hence the area of one of its faces is 100 square inches.

or in plain terms without using those formulas,

6 faces of the cube have 600 square inches

=> 1 face of the cube has 600/6 = 100 square inches