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Lina20 [59]
3 years ago
13

X + 4y = -24 5x + 3y = -35

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
5 0

Answer:

(-4,-5  )

Step-by-step explanation:

You are looking for the point of intersection of these two functions.

Substitution:

  • This are now your formulas

\left \{ {{x=-4y-24} \atop {5x+3y=-35}} \right.

  • You are going to substitute x, so you can solve for y
  1. 5(-4y-24)+3y=-35
  2. -20y-120+3y=-35
  3. -17y=85
  4. y=-5
  • Now you are going to substitute y to find x
  1. x=-4(-5)-24
  2. x=20-24
  3. x=-4
  • Now lets check if it is correct
  1. -4+4(-5)=-24 :)
  2. 5(-4)+3(-5)=-35 :)

So it is true, making (-4 , -5) your point of intersection.

hope it helps

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Carlos sells funiture at a local store.He earns 12% commisions on all of his sales.Yesterday carlos sold $5000 worth of furnitur
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Answer:

  $600

Step-by-step explanation:

To find the dollar value of Carlos' commission, multiply his commission rate by the amount of sales:

  commission = 12% × $5000 = $600

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As a decimal, 12% = 0.12. As a fraction, 12% = 12/100 = 6/50.

7 0
3 years ago
Clay ordered two suitcases ($44.50 each) from a catalog. He had to
ratelena [41]

Answer:

I believe your answer is C 94.79

If this answer is wrong please let me know my apologies

Step-by-step explanation:

If my math is correct

44.50+44.50=89

89

Now, find the tax value by multiplying tax rate by the before tax price:

tax = 85 × 0.065

tax = 5.53 (tax value rounded to 2 decimals)

Add tax to the before tax price to get the final price:

The final price including tax = 85 + 5.53 = 90.53

90.53 plus the shipping 3.89=94.79

3 0
2 years ago
Help with functions, i only need help with #2
olasank [31]
Let's look at the first one, then you can practice the rest on your own. So, h(0) = - 2 because the number in h() is which number you search for on the bottom row. Then you look at the number above that bottom number, which, in this case is - 2, and that number is your answer.
8 0
3 years ago
Jim is trying to improve his speed on the track so he can qualify for the State Championships. As he is running, he goes from 70
kumpel [21]

Answer:

His acceleration is \frac{1}{15} meters per seconds²

Step-by-step explanation:

Acceleration is the rate of change of the speed

The formula of acceleration is a=\frac{v_{f}-v_{i}}{t} , where

  • v_{f} is the final speed
  • v_{i} is the initial speed
  • The unit of the acceleration is meters/second²

∵ Jim goes from 70 meters/minute (beginning speed) to

   106 meters/minute (final speed) in 9 seconds

∴ His initial speed v_{i} = 70 meters/minute

- Change it the meter per second

∵ 1 minute = 60 seconds

∴ \frac{70}{(1)(60)}=\frac{70}{60}=\frac{7}{6}  meters/second

∴ v_{i} = \frac{7}{6}  meters/second

∵ His final speed v_{f} = 106 meters/minute

- Change it the meter per second

∴ \frac{106}{(1)(60)}=\frac{106}{60}=\frac{53}{30}  meters/second

∴ v_{f} = \frac{53}{30}  meters/second

∵ The time of the change of his speed is 9 seconds

∴ t = 9

∵ The formula of acceleration is a=\frac{v_{f}-v_{i}}{t}

- Substitute the values of t, v_{i}  and v_{f} in the formula above

∴  a=\frac{\frac{53}{30}-\frac{7}{6}}{9}=\frac{1}{15}

∴ His acceleration is \frac{1}{15} meters per seconds²

3 0
3 years ago
The number 98 is decreased to 97​
Sonbull [250]

Answer:

One was subtracted.

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