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FrozenT [24]
3 years ago
5

Solve: 2x - 45 = 7x - 9x - x

Mathematics
2 answers:
Kipish [7]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

strojnjashka [21]3 years ago
6 0

Answer:x = 9

Step-by-step explanation:

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A restaurant operator in Accra has found out that during the partial lockdown, if she sells a plate of her food for GH¢20 each,
Lilit [14]

Answer:

Step-by-step explanation:

First, note this parameters from the question.

We let x = number of $5 increases and number of 10 decreases in plates sold.

Our Revenue equation is:

R(x) = (300-10x)(10+5x)

We expand the above equation into a quadratic equation by multiplying each bracket:

R(x) = 3000 + 1500x - 3000x - 1500x^2

R(x) = -1500x^2 - 1500x + 3000 (collect like terms)

Next we simplify, by dividing through by -1500

= 1500x^2/1500 - 1500x/1500 + 3000/1500

= X^2 - x + 2

X^2 - x + 2 = 0

Next, we find the axis of symmetry using the formula x = -b/(2*a) where b = 1, a = 1

X = - (-1)/2*1

X = 1/2

Number of $5 increases = $5x1/2 = $2.5

=$2.5 + $20 = $22.5 ticket price gives max revenue.

7 0
2 years ago
Coz and Amelia each make a tile design with 24 tiles. Coz puts his in rows of 2.Amelia puts hers in rows of 3.How many more tile
Ivahew [28]

Answer:

4 tiles

Step-by-step explanation:

Divide 24 by 2 (Coz): 12 tiles

Divide 24 by 3 (Amelia): 8 tiles

Subtract 8 from 12.

12 - 8 = 4

There are 4 more tiles in each of Coz's rows than Amelia's.

4 0
3 years ago
The question that follows this graph is:
azamat

Answer:

S'(5,-1), M'(1,-3)

Step-by-step explanation:

So, if the rotation is clockwise, the formula is (x,y)--->(-x,-y).

The original points are, (-1,3) and (-5,1).

Using the formula,

(-1,3) ----> (1,-3)

(-5,1) ----> (5,-1)

For the question in the image, the reflection over the x-axis is..

S'(-5,1) ---> (-5,-1)

M'(1,-3) ---> (-1,-3)

6 0
3 years ago
Una escalera, tiene un largo de 6m y está recargada en un muro. El ángulo entre la escalera y el muro es de 65°,
Rudiy27
Adyacente=hipotemusa*coseno del angulo
A=6*cos(65)
A=2.54m
Una pregunta, ¿estudias en educazion.net?
6 0
3 years ago
What is the value of x?<br> 155<br> 105<br> A. 55°<br> B. 160°<br> C. 50°<br> O D. 20°
Hatshy [7]
If you are taking one away from the other the answer is 50 degrees so try that hope this helps
=C.
3 0
2 years ago
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