Answer:
he said help please!! tasks from 9 to 16!! Very necessary!! Thank you so much in advance!! <Z
Step-by-step explanation:
your welcome
Answer:
Step-by-step explanation:
<u>We know that:</u>
<u>Let's first solve for y by choosing any equation.</u>
- 4x + y = 14
- => y = 14 - 4x
<u>Now, let's substitute the value of y into the second equation.</u>
- 6x - 3y = 3
- => 6x - 3(14 - 4x) = 3
- => 6x - 42 + 12x = 3
- => 18x - 42 = 3
- => 18x = 42 + 3
- => 18x = 45
- => x = 45/18 = 5/2 = 2.5
<u>Now, let's substitute the value of x into the equation of y.</u>
- => 14 - 4x = y
- => 14 - 4(2.5) = y
- => 14 - 10 = y
- => y = 4
Hence, the value of x and y are 2.5 and 4 respectively.
Answer:
r=1
Step-by-step explanation:
3(2x−2)−r+3x=2(7x+1)−5x−9
Step 1: Add -9x to both sides.
−r+9x−6+−9x=9x−7+−9x
−r−6=−7
Step 2: Add 6 to both sides.
−r−6+6=−7+6
−r=−1
Step 3: Divide both sides by -1.
−r
−1
=
−1
−1
Answer:
i)
ii) (f-g)(x)=2x-5
iii) (f+g)(-1)=3
Step-by-step explanation:
f(x)=3x+1
g(x)=x+6
we are asked to determine
i) (f.g)(x) = f(x).g(x)
ii) (f-g)(x)=f(x)-g(x)
=(3x+1)-(x+6)
=3x+1-x-6
(f-g)(x)=2x-5
iii) (f+g)(x) = f(x) + g(x)
= (3x+1)+(x+6)
= 3x+x+1+6
(f+g)(x)=4x+7
(f+g)(-1)=4(-1)+7
=-4+7
(f+g)(-1)=3