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kipiarov [429]
3 years ago
10

Y = –3x + 7 y = 2x – 8

Mathematics
1 answer:
inn [45]3 years ago
3 0

Answer:

Step-by-step explanation:

Using the <u>comparison, substitution, and elimination method</u>, the answer is:(x,y)=(3,-2)

When <u>rewriting the equation</u> the answer is:

3x+y=7

2x-y=8

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mina [271]

Answer:

The area of the square should be 3

Step-by-step explanation:

a= 1.73

8 0
4 years ago
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Find the area of the following: <br> -square whose sides are (x+1) in length
Rainbow [258]
Area of Square = Base*Height 
Base=(x+1) Height=(x+1)
Therefore Area=(x+1)(x+1) or (x+1)^2
By expanding the brackets e.g. x*x is x^2 then x*1 is x and so on you get:
x^2+x+x+1 this simplfies to x^2+2x+1
Area = x^2=2x+1
Unless they have given you a value for x, this is the equation for the area of said square.
4 0
3 years ago
Read 2 more answers
A toy manufacturer uses 90 pints of plastic to make 600 action figures. If they use 810 pints of plastic in an 8 hour shift, how
lutik1710 [3]

Answer:

The number per hour = 5400 ÷ 8 = 675 action figures

Step-by-step explanation:

* Lets explain how to solve the problem

- A toy manufacturer uses 90 pints of plastic to make 600 action figures

- they use 810 pints of plastic in an 8 hour shift

- To find how many action figures are made per hour we must to find

  how many action figures in an 8 hour shift and then find the number

  of the action figures per hour

∵ The toy manufacture  uses 90 pints of plastic to make 600 action

   figures

∵ They use 810 pints

- Lets find how many action figures are made by this numbers of pints

∴ 90/600 = 810/x ⇒ x is the number of action figures

- Use the cross multiplication to find x

∴ 90 x = 810 × 600

∴ 90 x = 486000 ⇒ divide both sides by 90

∴ x = 5400

∴ They will use 810 pints to make 5400 action figures

∵ They use 810 pints in an 8 hour shift

∴ They make 5400 action figures in 8 hours

- To find the number of the action figures per hour divide the number

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∴ The number per hour = 5400 ÷ 8 = 675 action figures

8 0
3 years ago
A cat gave birth to 3 kittens who each had a different mass between 147 and 159\,\text{g}159g159, start text, g, end text. Then,
iris [78.8K]

Answer:

both decrease

Step-by-step explanation:

mean before the 4th kitten = 153

mean after the 4th kitten = 129

<em>hence mean decreases</em>

median before the 4th kitten= 153

median after the 4th kitten= 150

<em>hence median decreases</em>

4 0
3 years ago
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a payday loan store charges $30 for a one-month loan of $600. What is the annual interest rate is this equivalent to ?
lana [24]
Finding what percentage is $30 of $600:
\frac{30}{600} \times100=5\%
So, it is 5% per month.

Converting it to annual:
5\%\times 12=60\%
6 0
4 years ago
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