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meriva
3 years ago
8

How would I solve the equations: y = x-4 and y=x^2-4x using substitution

Mathematics
1 answer:
andriy [413]3 years ago
6 0

Answer:

x = 6

Explanation:

y = x - 4

26 = 4x + y


If y = y, then we can rewrite this system as this: 4x + x - 4 = 26


Then we combine like terms and add 4  on both sides to give us  5  x  =  30 . Divide by 5 on both sides and we arrive at the solution: x = 6

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Which figure is the pre-image? Which figure is the image after the first transformation? Which figure is the image after the sec
Delvig [45]

Answer:

I believe the red one is the first image then the blue then the green because they show the prime sign

Step-by-step explanation:

4 0
3 years ago
Yeah i have no clue how to do this and there's two of them soo help is very much appreciated lol
cluponka [151]

Answer:

2^x - 4 is the answer here

5 0
3 years ago
How do you simplify 3 1/4 x 3/5 someone please help me
kifflom [539]

Answer:

We want to simplify:

(3 + 1/4)*(3/5)

The first step is to write the first term as a single rational number.

We know that:

3*1 = 3

and 4/4 = 1

then:

3*1 = 3*(4/4) = (3*4)/4 = 12/4

We do this because we want to have the same denominator in both numbers, so we can directly add them.

Then we get:

(3 + 1/4)*(3/5) = (12/4 + 1/4)*(3/5) = (13/4)*(3/5)

And remember that in the multiplication of rational numbers the numerator are multiplied together and the same for the denominators, then we get:

(13/4)*(3/5) =  (13*3)/(4*5)

If we solve the multiplications we get:

(13*3)/(4*5) = (39/20)

Now, we can notice that in the numerator we have two prime numbers, 13 and 3.

And in the denominators, we have a 4 (which is equal to 2*2) and a 5.

So the prime numbers in the numerator and the denominator are all different, this means that we can not simplify it furthermore.

Then we have:

(3 + 1/4)*(3/5) = (39/20)

6 0
3 years ago
A laptop has a listed price of $843.88 before tax if the sales tax rate is 7.25% find the total cost of the laptop with sales ta
Step2247 [10]

Answer:

$905.06 dollars

Step-by-step explanation:

Given the following question:

7.25% of 843.88

In order to find the answer, we use the formula to calculate percentages, then we add that answer to the initial cost of the laptop.

\frac{p\times c}{100}
\frac{7.25\times843.88}{100}=7.25\times843.88=6118.13\div100=61.1813
61.1813
1 < 5
61.18

<u>Now add:
</u>843.88+61.18=905.06
=905.06

Which means the laptop after a 7.25% sales tax costs "$905.06 dollars."

Hope this helps.

7 0
2 years ago
The temperature in Fairbanks, Alaska, changed from 0F at 6 pm to 4F at 11 pm . Between 11 pm and 5 am , the temperature dropped
Nat2105 [25]
I think in order to answer we have to the options
7 0
3 years ago
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