Um help! how do I do this?
Korianna avatar

Answers

Answer 1
Answer: 1/2 t-4(2+t)=20
1/2 t-8-4t=20
least common multiple=2
t-16-8t=40
-7t=40+16
-7t=56
t=56/-7=-8

Answer: t=-8

To check
-8/2 - 4(2-8)=-4-4(-6)=-4+24=20
Answer 2
Answer: You do it just exactly as the question says:  Take one choice,
substitute it in place of 't' in the given equation, and see if the
equation becomes a true statement.

I'll do 'A' for you:

Does 't' = 8 ? 
Let's see.
If it does, then             (1/2) (8)  -  4(2 + 8)  =  20

                                     (     4    )  -  4(  10  )  =  20

                                     (     4    )  -      40       =  20

                                                  -36               =  20 .

Is that a true statement ?     Is  -36 = 20  ?
I don't think so.
=>  't' is not 8 .     
      'A' is not the correct choice.

Now go ahead and try 'B'.
_________________________________

It might be faster and easier to just take the equation and solve it.
Then you'll know what 't' is, and you won't have to try any suggestions.

Here's the equation:              (1/2) (t) - 4(2 + t)  =  20

Eliminate parentheses
on the left side:                        1/2 t    - 8 - 4t  =  20

Combine the 't's
on the left side:                        -3.5 t  -  8        =  20

Add  8  to each side:               -3.5 t               =  28

Multiply each side by  -1 :         3.5 t               = -28

Divide each side by  3.5 :               t               = - 8 .

Now you can look back at the choices
and see that 'B' is the one you want.       

Related Questions

23% of 75 is what number?
You are in line at an amusement park. You CAL 34 people in front of you. Each roller coaster fits 11 people. How many roller coaster must run before you get on? Explain.
Describe triangle ABC in terms of its sides and angles
Find the result when 28 is decreased by 25%
PLEASE HELP I WILL GIVE 5 STAR A HEART AND IF TWO ANSWERS I WILL GIVE U A BRAINLEST A farmer has decided to divide his land area in half in order to plant soy and corn. Calculate the area of the entire area so he knows how much soil is needed. A parallelogram with a height of 6 yards and side length 9 yards. The height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. Rhombus is split into a soy half and a corn half. Each bag of soil covers 40 square yards. How many bags should the farmer purchase? 1 bag 2 bags 3 bags 4 bags

Mikasi and Julie are determining which size sports drink is the better buy per ounce: a 16-ounce bottle for $1.95 or a 36 ­ounce bottle for $3.05. Who is correct? Explain.Mikas: 16-oz bottle: 12.2¢ per ounce
36-oz bottle: 8.5¢ per ounce

Julie: 16-oz bottle : 8.2¢ per ounce
36-oz bottle: 11.8¢ per ounce

Answers

The answer is
Mikas: 16-oz bottle: 12.2¢ per ounce
36-oz bottle: 8.5¢ per ounce 

To calculate price per ounce, we will use the proportion:
16 ounces : $1.95 = 1 ounce : x
Crossing the products:
x = 
$1.95 × 1 ounce ÷ 16 ounces
x = 
$0.122 = 12.2¢
So, 
16-oz bottle is 12.2¢ per ounce.

Similarly:
36 ounces : 
$3.05 = 1 ounce : x
Crossing the products:
x = $3.05 × 1 ounce ÷ 36 ounces
x = 0.085 = 8.5
¢
So, 
36-oz bottle is 8.5¢ per ounce.

It can be concluded that Mikas was correct.

Josh estimates the height of his desk. what is the reasonable estimate?…

Answers

i cant answer if there is no info

Write the number in order starting with the smallest 1.06, 1.031,1.306,1.36

Answers

1.031, 1.06, 1.306, 1.36

If it helps, when you have something that only goes to the hundredths place, add a 0 to the end.
for example, 1.63= 1.630
1.031, 1.06, 1.306, 1.36

What properties are shared by rectangles

Answers

--  opposite pairs of sides are equal
--  opposite pairs of sides are parallel
--  interior angles are right angles
--  sum of the interior angles is 360°
--  opposite angles are supplementary
--  adjacent angles are supplementary
--  all of them have at least 2 lines of symmetry (some have 4)
right angles and 2 different sets of the same side 
lengths 

What is the simplest form of the fraction
4/10

Answers

Both the numerator and the denominator are divisible by 2.

(4/2)/(10/2) so the simplest form would then be 2/5

Your answer is: 2/5

The simplest form of the fraction 4/10 is 2/5.

To simplify the fraction 4/10, you need to find the greatest common factor (GCF) of the numerator (4) and the denominator (10) and then divide both by that factor.

Step 1: Find the GCF of 4 and 10.

Factors of 4: 1, 2, 4

Factors of 10: 1, 2, 5, 10

The GCF of 4 and 10 is 2.

Step 2: Divide both the numerator and denominator by the GCF (2).

4 ÷ 2 = 2

10 ÷ 2 = 5

So, the simplest form of the fraction 4/10 is 2/5.

In conclusion, the fraction 4/10 can be simplified to 2/5 by dividing both the numerator and denominator by their greatest common factor, which is 2. This simplified form represents the same portion of a whole but is expressed in its most reduced form.

To know more about fraction:

brainly.com/question/10354322?


#SPJ6

Six students shared equally the cost of 18 of one of the items in the chart. Each student paid $24. What item did they buy? Explain how you found your answer.Item                             Price
Origami book             $24each
Origami paper            $6per pack
Origami kit                 $8each

Answers


Origami Kit

8 X 18 = 144

divide by 6 students so 144/6 = $24 each

Other Questions