MATHEMATICS MIDDLE SCHOOL

25 points. Math question

Answers

Answer 1

Answer:

$\huge\boxed{\mathfrak{Answer}}$

$f(x) = 2x - 4 \n f( - 2) = {?} \n \n x = - 2 \n \n f( - 2) = 2( - 2) - 4 \n f( - 2) = - 4 - 4 \n f( - 2) = - 8$

=> The answer is -8.

Answer 2

Answer:

Answer:

-8

Step-by-step explanation:

I believe it is -8

first you 2(-2) - 4

then you -4 -4= -8

Hope that was helpful.

Related Questions

A rectangular bedroom floor has an area of 100 square feet and a length of 10 feet. What is the perimeter of the floor?
How do you solve 39= 1 3/10b
5 1/6-2 3/8-2/4??????? how to do
Put the following events in order from least to most likely. Please help me in this
5. What is an Improper Fraction ? Give at least 2 examples of an Improper Fraction.

Please could someone help me with these questions sorry about the scribbling on one page I got stuck

Answers

question 4
So the polygon has 10 sides, to calculate how much all the interior angles are summed up, you have to see how many triangles you can fit into the polygon (this works for any polygon), in this case it is 8 (see file attached). Therefore you do 8 x 180 = 1440, so the overall angle is 1440º. Now you do 1440 : 10, because there are 10 equal angles, and that is 144º.
Every angle has 144º

question 5
Bearings are always measured clockwise and you always start north. You are at point A and want to go to point B, how much do you have to turn (clockwise!!)?
345º

farmer fran has 47 barnyard animals,consisting of only chickens and sheep . if these animals have 138 legs , how many of each type of animals are there?

Answers

47 X 4 = 188. That is 50 too many legs. 50/2=25. If you take away 25 sheep and add 25 chicken you have the correct number of legs. There are 25 chicken and 22 sheep.

Hope this helps.

just use the equations x + y= 47 and 2x + 4y=138 to solve

I need help with this and don't know the answer to this problem.

Answers

Answer:

x = 122°

w = 90°

Step-by-step explanation:

x + 58° = 180°

[Sum of linear pair of angles measure 180°. If the pair is a set of two angles then the angles of this linear pair are called as Supplementary angles]

x = 180° - 58°

x = 122°

Similarly, w + 90° = 180°

w = 180° - 90°

w = 90°

Therefore, values of each variable are x = 122° and w = 90°.

Please help quick, need answers for 21, 22, and 23, with a step by step explanation.

Answers

Answer:

21) $90 22) $144 23) $240.5

Step-by-step explanation:

21) Cost to Store(CTS): 75 Markup(M): 20

Turn 20% into 0.20

Multiply the CTS, 75, by 0.20 to get 15

Add 15 and 75 together to get 90

22) CTS: 90 M:60

Turn 60% into 0.60

Multiply the CTS, 90, to 0.60 to get 54

Add 54 and 90 together to get 144

23) CTS: 130 M:85

Turn 85 into 0.85

Multiply the CTS, 130, to 0.85 to get 110.5

Add 110.5 and 130 together to get 240.5

A tutor schedules either 30-minute sessions or 60-minute sessions with her students.Last week, the tutor gave 8 sessions which lasted for a total of 7 hours. How many 60-minute sessions did the tutor give last week?ANSWER THIS QUICKLY PLEASE! THANKS!

Answers

6 one hour sessions and 2 half hour sessions for a total of 8 sessions. Answer: 6

The tutor gave 7 sessions that lasted 60 minutes last week.

7x60=420

420minutes in total, divided by 60min session = 7 sessions that lasted 60 minutes

I hope this helped, and you understand

All of my points to anyone who can help me with these..! Marking Brainliest as well