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Nataly [62]
3 years ago
7

What is the solution to the equation 9x - 1 = 80. X = -9 X = 1 x = 81 x=9

Mathematics
2 answers:
xenn [34]3 years ago
5 0

Answer:

x = 9

Step-by-step explanation

9x - 1 = 80

add 1 to both sides and you get

9x = 81

divide each side by 9 and you get

x = 9

IgorLugansk [536]3 years ago
4 0
X= -9 because I looked it up
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PLEASE HELP ASAP!! WILL GIVE BRAINLIEST AND 30 POINTS!! SOLVE FOR VALUE OF X. PLEASE EXPLAIN HOW YOH GO THE ANSWER OR HOW YOU SO
Serhud [2]

Answer: x=3

I got to the answer by doing simple math. Both sides must be even.

5x-4

5(3)-4= 15-4 = 11

x+8

3+8= 11

So x=3

7 0
3 years ago
One metre of material costs Rx. Write an expression to show that 8 metres cost R116.
Veseljchak [2.6K]

Answer:

8x = R116

x = R14.5

Step-by-step explanation:

1 metre costs = x

8 metres cost = 8x

  • 8x = 116 is the required equation
  • x = 116/8
  • x = 14.5

Answer is: R14.5

4 0
4 years ago
FOOD DeLila has 4 1/2 pies to divide equally among 9 people. How much will each person get?
kirill115 [55]

Answer:

1.

Step-by-step explanation:

Lets make 4\frac{1}{2} into a improper fraction!

Whole number times denominator and add denominator 2 x 4+1= 9

Now we divide

\frac{9}{9} =1

So each person gets 1 amount of food.

Hope this helps :)

4 0
3 years ago
F(x)= 2x^2 -4x +9 and g(x)= 4x +1 Find (f o g) (-1)
VikaD [51]

The value of the composite function is 20

<h3>Composite function</h3>

Composite function is also known as function of a function

Given the following expression as shown below;

f(x)= 2x^2 -4x +9

g(x)= 4x +1

Determine (fog)(x)

f(g(x) = f(4x+1)

f(4x+1) = 2(4x+1)^2-4(4x+1)+9

f(4x+1) = 2(16x^2+8x+1)-16x-4+9
f(4x+1) =13x^2+16x+2-16x+5

f(4x+1) = 13x^2 + 7

If the value of x is -1, hence;

f(4x+1) = 13(-1)^2 + 7

f(4x+1) = 20

Hence the value of the composite function is 20

Learn more on composite function here: brainly.com/question/13502804

#SPJ1

3 0
2 years ago
Lana earned $49on friday $42 on saturday,and $21 on sunday selling bracelets she sold each bracelet for the same amount what is
Paul [167]
$7 because all you have to do is find the greatest common denominator. Which is 7. 7 is the greatest common denominator in the bunch. 7 goes into 21, 42, 49.
8 0
3 years ago
Read 2 more answers
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