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CaHeK987 [17]
3 years ago
8

PLEASE HELP! I WILL MARK YOU BRAINIEST

Mathematics
1 answer:
poizon [28]3 years ago
7 0

Answer:

a=2.4

Step-by-step explanation:

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Please help, I’m very confused
snow_tiger [21]

Answer:

1st picture: (0,4)

The lines intersect at point (0,4).

2nd picture: Graph D

2x ≥ y - 1

2x - 5y ≤ 10

Set these inequalities up in standard form.

y ≤ 2x + 1

-5y ≤ 10 - 2x → y ≥ -2 + 2/5x → y ≥ 2/5x - 2

When you divide by a negative number, you switch the inequality sign.

Now you have:

y ≤ 2x + 1

y ≥ 2/5x - 2

Looking at the graphs, you first want to find the lines that intersect the y-axis at (0, 1) and (0, -2).

In this case, it is all of them.

Next, you would look at the shaded regions.

The first inequality says the values are less than or equal to. So you look for a shaded region below a line. The second inequality says the values are greater than or equal to. So you look for a shaded region above a line.

That would mean Graph B or D.

Then you look at the specific lines. You can see that the lower line is y ≥ 2/5x - 2. You need a shaded region above this line. You can see the above line is y ≤ 2x + 1. You need a shaded region below this line. That is Graph D.

8 0
3 years ago
Read 2 more answers
Find the inverse.. ASAP
Evgen [1.6K]
Answer :
F-1(x)=-x/4-7/4


This is right
Go get help to sum sites!!!!!

8 0
2 years ago
A store increases the price of a sweater from $20 to $22. What is the percent of increase? Select from the drop-down menu to cor
o-na [289]
Price increase is $ 22-20 =$2 so the percent increase is 2/20 x 100= 10%
5 0
3 years ago
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The ratio of cats to dogs at the animal shelter is 4 to 5. If there are 45 dogs at the shelter, how many total cats and dogs are
Nat2105 [25]
<h3>Answer:  81</h3>

Work Shown:

x = number of cats

(4 cats)/(5 dogs) = (x cats)/(45 dogs)

4/5 = x/45

4*45 = 5x

180 = 5x

5x = 180

x = 180/5

x = 36

There are 36 cats and x+45 = 36+45 = 81 cats and dogs total.

3 0
2 years ago
Find the length of the longer leg of a 30⁰-60⁰-90⁰ triangle given the length of the shorter leg: 15 in.
erica [24]

Answer:

longer leg is 30 inches

Step-by-step explanation:

3 0
3 years ago
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