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4 years ago

Find three solutions for the equation 2x+y=-4

1 answer:

7 0

I would start by plugging in a number for x. Just any random number. Let's take 2 for example. Then the equation would go from 2x + y = -4, to 2(2) + y = -4. Then solve.

2(2) + y = -4
4 + y = -4, after you've done that, plug in a number for y, that completes the equation. In this case, the only acceptable number, would be -8. Because it completes the number sentence.

4 + (-8) = -4
-4 = -4.

Now plug in other numbers, to get the same outcome. Hope this helped!

-Twixx

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Find the solution to the equation: f(x)=x^2-4x+3 Please show work!

Vedmedyk [2.9K]

Answer:

two solutions

x = 1, 3

Explanation:

$\sf f(x)=x^2-4x+3$

$\rightarrow \sf x^2-4x+3=0$

$\rightarrow \sf x^2-3x-x+3=0$

$\rightarrow \sf x(x-3)-1(x-3)=0$

$\rightarrow \sf (x-1)(x-3)=0$

$\rightarrow \sf x-1=0, \ x-3=0$

$\rightarrow \sf x=1, \ x=3$

Thus, there are two solutions and the values are 1 and 3

3 0

2 years ago

Read 2 more answers

Can any negative integer be greater than a positive integer explain

Keith_Richards [23]

No, it is impossible. Intuitively, a negative number sits at the left of 0 on the number line, and a positive number sits at the right of 0 on the number line. And a number x is greater than another number y if x sits at the right of y on the number line. So, every positive number is greater than any negative number.

Also, by definition, a positive number is greater than 0, and a negative number is smaller than zero. So, if x is positive and y is negative, you have

$y < 0 < x$

and since the relation of order "<" is transitive, this implies

$y < x$

5 0

3 years ago

What is the surface area of the pyramid

Margaret [11]

find the area of the base which is 8*8=64 in^2

then the triangles one is 2*[(6*4)/2)]= 24 in^2 and theres 4 of them so times 4

24*4=96 in^2

then add and u get 160 in^2

5 0

3 years ago

Lydia wrote 4 1/2 pages of her science report in one hour. what was her writing rate in pages per minute?

Firdavs [7]

To solve this question, I first converted one hour into minutes. (60 minutes)

Then I divided 4 1/2 into 60. As a decimal, the answer if 0.075. If you convert that into a lowest terms fraction, you get 3/40.

7 0

3 years ago

Pythagorean theorem, please solve! Thanks

gogolik [260]

The general form for Pythagoras' theorem is: a² + b² = c² (where c is the longest side).

You already have sides a and b, and to figure out c, you just have to substitute the numbers into the original equation and work it out step by step. Let's substitute a for 17 and b for 24:

a² + b² = c²

(17)² + (24)² = c²

289 + 576 = c²

865 = c²

Square root both sides to work out c:

√865 = √(c²)

c = √865 ≈ 29.41

6 0

4 years ago