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abruzzese [7]
3 years ago
14

Consider the following pair of equations:

Mathematics
1 answer:
miv72 [106K]3 years ago
6 0

3x + 3 = x - 1 \\ 3x - x =   - 1 - 3 \\ 2x =  - 4 \\ x =  \frac{ - 4}{2 }  =  - 2
Take X=-2 into y
y = x - 1 \\ y =  - 2 - 1 \\ y =  - 3
(x, y) =(-2,-3)
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Are the ratios of the number of people to the number of rollercoaster cars in a proportional relationship? Explain your reasonin
LiRa [457]

Answer:

the answer will be 366:81

Step-by-step explanation:

you will find value of ratio 3:18

=6

then divide 366:61

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7 0
3 years ago
Simply please “picture”
oksian1 [2.3K]
<h3>Answer: (-infinity, 7]</h3>

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

Explanation:

The first interval (-infinity, 3) describes any number less than 3, so we can write x < 3 in short hand (where x is the unknown number).

The second interval (-1, 7] means we start at -1 and stop at 7. We do not include -1 but include 7. So we say that -1 < x \le 7 (ie x is between -1 and 7; exclude -1, include 7)

If you were to graph each ona number line, you would see that the too intervals have overlapping parts. The right most edge extends out as far as x = 7. There is no left most edge as it goes onforever that direction.

Therefore, the to intervals combine to get x \le 7 which turns into the interval notation answer of (-infinity, 7]

-----------

It might help to think of it like this: x < 3 and -1 < x \le 7 say "x is some number that is less than 3, or it is between -1 and 7". So x could be anything less than 7, including 7 itself.

4 0
3 years ago
Find the value of 7u+1 given that -5u-1=4
Ganezh [65]
<h3>Given:-</h3>

⟹-5u-1=4

⟹-5u=4+1

⟹-5u=5

⟹u=\frac{5}{-5}

<h3>⟹u=-1</h3>

<h3>Substitute The Value</h3>

⟹7u+1

⟹7×(-1) +1

⟹-7+1

<h3>⟹-6</h3>
5 0
2 years ago
Write a sentence that<br> represents the equation,<br> 5x + 3=28.
cupoosta [38]

Answer:

five times a number of pencils plus three pencils =twenty-eight pencils.

Step-by-step explanation:

x = 5, Have a great day!  

3 0
2 years ago
4 times the measure of the complement of an angle is equal to 2/3 the measure of the original's angles's supplement. what is the
scoundrel [369]

Answer:

72 degrees.

Step-by-step explanation:

If the angle is x degrees its complement is 90-x degrees and it's supplement is 180-x degrees.

4(90-x) = 2/3(180 - x)

360 - 4x = 120 - 2/3 x

360 - 120 = -2/3 x + 4x

240 = -2/3 + 12/3 x

240 = 10/3 x

x = 240 * 3/10

x = 72 degrees.

7 0
3 years ago
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