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evablogger [386]
3 years ago
10

Help me understand this and what is right!!!!! Brainliest.

Mathematics
2 answers:
storchak [24]3 years ago
6 0

Answer:

4 and i cant help u understand it

Step-by-step explanation:

Alborosie3 years ago
5 0

Answer:

the first one

Step-by-step explanation:

Think of it this way. If it needs to be greater than -11, that means there is some kind of restraint. that would be in this situation, its under a square root. if you plug in -11, it should equal 0, so it has to be x+11 under square root. The second one wouldn't work since that would make it square root of -22 and thats imaginary, same thing with all the others, when you plug in -11, the last 3 would come negative. the first one is the only one that cancels the negative and gives you 0

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Elimination Method: 6x - 4y = -24 and 4x + 5y = -2
nirvana33 [79]

Answer:

(-2;-6)

Step-by-step explanation:

First of all, let's rewrite the first one after dividing both sides by 2.

\left \{ {{3x-2y=-12\atop {4x+5y=-2}} \right.

Now, let's pick one you want to eliminate.

<u>Eliminating x:</u> Let's multiply the first one by 4, the second by 3, and subtract one from the other. Rest is simply solving an equation in one variable

4I-3II : 12x-8y-12x+15y = -48 - (-6)\\7y = -42 \rightarrow y= -6

<u>Eliminating y:</u> Let's multiply the first by 5, the second by 2, and add them together. Rest is simply solving an equation in one variable

5I+2II: 15x -10y +8x +10y = -60 +4\\23x = -56 \rightarrow x=-2

4 0
3 years ago
Plotting at least 3 points y=2/3x-5
Hunter-Best [27]
First you must plot one point on the y-axis. This point will be -5 because the y-intercept is a -5. Then you look at the slope. This is the number in front of the x. The numerator tells you how far up or down to go and the denominator tells you how far left or right to go. Because the slope is positive, we will go 2 points up from -5, and 3 points right from that. Plot your point. Then do the same thing from there. 2 up and 3 right and so on.
5 0
3 years ago
Read 2 more answers
A rectangular park is 56 mi wide and 157 mi long.
seraphim [82]

Answer:

8792mi^2

Step-by-step explanation:

basic area calculations width times length

8 0
3 years ago
What expression is equivalent to 8x + 5x​
krok68 [10]

Answer:

8x + 5x = 13x

Step-by-step explanation:

Since these two can be added, you just add like normal and make sure you do not forget the x.

5 0
3 years ago
Zoe walks at a speed of 10 miles/h and jogs at a speed of 20 miles/h.
ratelena [41]

Answer:

6 minutes

Step-by-step explanation:

20 miles jogs at 1 hour, so for 2 miles,

2/20

= 1/10 hours

= 1/10×60

= 6 minutes

Answered by GAUTHMATH

8 0
3 years ago
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