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Talja [164]
3 years ago
10

Solve the following systems of inequalities and select the correct graph: 2x-y>4 x+y< -1

Mathematics
2 answers:
brilliants [131]3 years ago
6 0

Answer:

option D or Graph D

Step-by-step explanation:

Serga [27]3 years ago
3 0

Answer:

Step-by-step explanation:

2x - y > 4 ⇒ y < 2x - 4

x + y < - 1 ⇒ y < - x - 1

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The question is below (This an order of operation question)
olga_2 [115]

Step-by-step explanation:

i am 90% sure this is correct

7 0
3 years ago
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James used a calculator to evaluate 8.931×7.38 but forgot to enter the decimal points. The answer he got was 6 591 078. What sho
likoan [24]

Answer:

65.91078

Step-by-step explanation:

You add the two decimals, that gives you two decimals. Use those two decimals and place them to the right of the answer. =0)

3 0
3 years ago
9 friends are lining up. Joe, Susan, John, and Meredith must be beside each other. How many ways can they line up?
ZanzabumX [31]
<h3>Answer:  17,280</h3>

This is one single number slightly over 17 thousand.

You may need to erase the comma when typing the answer in.

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

Explanation:

Let's say that another person steps in for Joe, Susan, John, and Meredith. I'll refer to this person as the teacher (perhaps these 9 friends are students on a field trip).

The 9 friends drops to 9-4 = 5 people when those four named people leave the group temporarily. Then it bumps up to 5+1 = 6 people when the teacher steps in. Wherever the teacher is located, the four friends that left will replace the teacher. This guarantees that those four friends stick together.

There are 6! = 6*5*4*3*2*1 = 720 ways to arrange those 6 people. The exclamation mark is a factorial symbol.

Within any of those 720 permutations, we have 4! = 4*3*2*1 = 24 ways to arrange those group of named people when they come back to replace the teacher.

So overall the answer is 4!*6! = 24*720 = 17,280

You may need to erase the comma when typing the answer in.

-------------

Side note: There are 9! = 362,880 ways to arrange all nine friends regardless if those four mentioned people stick together or not. We see that they stick together roughly (17,280)/(362,880) = 0.0476 = 4.76% of the time.

6 0
3 years ago
On the attached drawing what is the name for Angle LHJ? Obtuse, acute, complementary or right?
Natasha2012 [34]

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Step-by-step explanation:

As you can see in the figure, the parallel lines AD and GJ are intersected  by two lines.

The line EL intersects the parallel lines and there are two angles that are formed by this intersections which are located on the exterior of AD and GJ, but  on opposite sides of EL, (these angles are called "Alternate exterior angles" and they are congruent), which are:

 ∠LHJ and ∠EBA

You can observe that the angle ∠EBA is indicated with a square. This means that the measure of that angle is 90° (Right angle).

Therefore, if ∠EBA=90°, then ∠LHJ =90°

4 0
3 years ago
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Can anyone help with the vertical angles
klio [65]

Answer:

a

Step-by-step explanation:

do the ones that are congruent and right in front of eachother

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