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4 years ago

Can someone help am not sure how to do this -2x+3y=-10

1 answer:

4 0

<span>A) -2x+3y=-10
B) 2x+y=-14
Adding the equations we get
4y = -24
y = -6

Inserting y = -6 into equation B)
B) 2x -6 = -14
2x = -8
x = -4

</span>

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4x-6 <30<br> what is the answer?

guapka [62]

<h3>Answer: x < 9</h3>

Work Shown:

4x - 6 < 30

4x - 6 + 6 < 30 + 6

4x < 36

4x/4 < 36/4

x < 9

Explanation:

The idea is to undo everything happening to x. We follow PEMDAS in reverse. We undo subtraction first by adding 6 to both sides (step 2), then we undo multiplication by dividing both sides by 4 (step 4).

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3 years ago

when Dallas committed to work one morning his average speed was 45 mph. On the return trip he average only 35 mph. Due to conges

defon

The required distance is 16.40 km.

This problem can be solved if we know the concept of speed, time and distance.

We know the speed= $\frac{distance}{time}$

To solve the problem let us assume that the total distance between the workplace and home is x km.

Given that his speed while going from home to work is 45 mph and while returning is 35 mph.

Time for the complete journey is $\frac{5}{6}hr$ .

Now according to question;

$\frac{x}{45}+\frac{x}{35}=\frac{5}{6}$

⇒ $\frac{7x+9x}{315}=\frac{5}{6}$

⇒ $16x=\frac{5*315}{6}$

⇒ $x=\frac{5*315}{6*16}$

∴ $x=16.40\ km$

So, the required distance is 16.40 km.

To learn more about speed, distance and time visit the link:

brainly.com/question/15256256

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2 years ago

Brooke uses 8.6 pints of blue paint and white paint to paint her bedroom walls. 3/5 of this amount is blue paint, and the rest i

Iteru [2.4K]

Answer:

3 11/25 pints of white paint

Step-by-step explanation:

8 6/10 is the same as 43/5

if 3/5 of the total pints are blue then 2/5 are white

so multiply 43/5 x 2/5 to get 86/25 which equals 3 11/25

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3 years ago

Why isn’t the maximum ACT score (36) at the 100th percentile?

irga5000 [103]

Answer and Explanations

ACT score percentile help colleges compare students with one another, rather than just looking at everyone’s score. The score range is between 1 and 36, the highest score that one can receive on the ACT is 36. Moreover, 36 is the perfect score.

The maximum ACT score (36) is that in 2018, only 3,741 students (out of millions of test-takers) scored a perfect 36 on the ACT. The 99th percentile of test-takers includes those who earn 35 or 34 on the ACT. We can miss up to five questions on the ACT and still earn a 36. That is a reason why the maximum ACT score is 36 at the 100th percentile.

The ACT score report will provide more information about test-taking experience in the form of sub score. The higher the score, you will get into the colleges of your choice.

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4 years ago

Please answer quickly!!

MA_775_DIABLO [31]

Answer:

The answer is option B.

Step-by-step explanation:

All the other options are dependent.

8 0

2 years ago