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cluponka [151]
3 years ago
6

Solve the system of equations: y = x + 2 y = x2 + 5x + 6 HELP PLZ

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

x=2(twice)

y=0(twice)

Step-by-step explanation:

This question can be solved using substitution method

So let's solve

y=x+2....(1)

y=x2+5x+6....(2)

Substitute (1) into(2)

X+2=x2+5x+6

Collect like terms

X2+5x-x+6-2=0

X2+4x+4=0

X2+2x+2x+4=0

X(x+2)+2(x+2)=0

(X+2)(x+2)=0

X+2=0

Substrate 2 from both sides

X=-2

X+2=0

X=-2

Let's substitute the value of x into (1)

y=x+2

y=-2+2

Y=0(twice)

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umka2103 [35]
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7 0
3 years ago
The price of a watch was increased by 7% to £1350. What was the price before the increase? Give your answer to the nearest penny
frutty [35]

Answer:

1261.68

Step-by-step explanation:

1350 = the increased watch price= 107% of the original

1350= 1.07x

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Check:

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Round:

1261.68224299  

To the penny= to the hundreth= 1261.68

3 0
3 years ago
a store advertises that customers can take 25% off the original price and ten take an extra 10% off. is this the same as a 35% o
maksim [4K]

Answer:

No, they are not the same.

Step-by-step explanation:

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100*.75=75

Now that we have the 75 dollar price, we need to take off the 10%. We need to multiply the current price of 75 by .9

75*.9=67.5

The price after these 2 discounts is $67.50

Now lets do the 35% off right away. Since is 35% off we need to multiple our right of 100 by .65.

100*.65=65

The price after the 35% off is $65

So no, they are not the same.

7 0
3 years ago
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Because you just turn -0.875 into a decimal: To convert a fraction to a decimal, divide the numerator by the denominator. If required, you can use a calculator to do this.

6 0
3 years ago
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