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3 years ago

6

Im need HELP!!!m<JEF=40°

1 answer:

mr Goodwill [35]3 years ago

8 0

Complement of JEF is 50 degrees
supplement of JEF is 140 degrees

complement of DON is -34 degrees or depending on your teacher, the answer is NONE.
supplement of DON is 56 degrees

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Vanessa wants to purchase a new cell phone plan. The two plans from which she can choose are shown below. Vanessa used the syste

user100 [1]

Answer:

2. 325 minutes.

Step by step explanation:

We will substitute our given number of minutes in our both equation one by one to find the correct option.

1. Let us substitute m= 775 in both equations.

$CA=22+0.13m$

$CA=22+0.13\cdot 775$

$CA=22+100.75=122.75$

$CB=44+0.09(m-100)$

$CB=44+0.09(775-100)$

$CB=44+0.09\cdot675$

$CB=44+60.75=104.75$

$104.75\neq122.75$

We can see that both plans have different costs , therefore, 1st option is incorrect.

2. Let us substitute m= 325 in both equations.

$CA=22+0.13m$

$CA=22+0.13\cdot 325$

$CA=22+42.25=64.25$

$CB=44+0.09(m-100)$

$CB=44+0.09(325-100)$

$CB=44+0.09\cdot 225$

$CB=44+20.25=64.25$

$64.25=64.25$

When Vanessa has used the phone for 325 minutes, the cost for Plan A and the cost for Plan B will both be $64.25.Therefore, 2nd option is correct choice.

3. Let us substitute m= 32.5 in both equations.

$CA=22+0.13m$

$CA=22+0.13\cdot 32.5$

$CA=22+4.225=26.225$

$CB=44+0.09(m-100)$

$CB=44+0.09(32.5-100)$

$CB=44+0.09\cdot -67.5$

$CB=44-6.075=37.925$

$37.925\neq26.225$

4. Let us substitute m= 764 in both equations.

$CA=22+0.13m$

$CA=22+0.13\cdot 764$

$CA=22+99.32=121.32$

$CB=44+0.09(m-100)$

$CB=44+0.09(764-100)$

$CB=44+0.09\cdot 664$

$CB=44+59.76=103.76$

$121.32\neq103.76$

Therefore, 4th option is incorrect.

3 0

3 years ago

Premium steak costs $18 per pound; how much steak cost per ounce ?

Angelina_Jolie [31]

Answer: $1.13 or $1.125

Step-by-step explanation:

divide 18 by 16

8 0

3 years ago

Find the measure of the indicated angle:<br> 30°<br> 52⁰<br> ?<br> 28°

grin007 [14]

Answer:

54°

Step-by-step explanation:

180° - 52° - 30° = 98°

180 - 98° - 28° = 54°

8 0

2 years ago

John is 3 years older than Jim. Jim is 4 years less than twice David’s age. How old are the three boys if their ages add up to 3

gulaghasi [49]

Answer:

15 years , 12 years , 8 years.

Step-by-step explanation:

Given:

John is 3 years older than Jim.

Jim is 4 years less than twice David’s age.

Ages of three boys add up to 35.

Question asked:

How old are the three boys?

Solution:

Let age of David = $y$

Let age of Jim = $x$

Then age of John will be = $x + 3$

As Jim is 4 years less than twice David’s age

Equation will be , $x = 2y - 4$

Multiplying both side by 2

= $2x = 4y - 8$ (let equation 1 )

As ages of three boys add up to 35.

Equation will be, $x + (x + 3) + y = 35$

= $2x + 3 + y = 35$

Subtracting both side by 3

= $2x + y = 32$

= $2x = - y + 32$ (let equation 2 )

subtracting equation 1 and 2,we get

= $2x = - y + 32$

= $2x = 4y - 8$

= $0 = - 5y + 40$

= $5y = 40$

dividing both side by 5

$= y = 8$ (David ages)

Then ( age of Jim) $x = 2y - 4$

$x = 2 \times8 - 4$

= $16 - 4$

= $12 years$

Then age of John will be, $x + 3$

$= 12 + 3$

= $15 years$

Thus, age of John = 15 years

Age of Jim = 12 years

Age of David = 8 years

7 0

2 years ago

If f(x) = 4x - 12, what is f(2)?<br> O A. -4<br> O'B. 4<br> O c. -20<br> D. 8<br> Helpppp plzzz

photoshop1234 [79]

Answer:

-4

Step-by-step explanation:

f(x) = 4x - 12

Let x=2

f(2) = 4*2 - 12

= 8-12

= -4

8 0

2 years ago