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Ne4ueva [31]
3 years ago
14

can someone please tell me how to do 2x=3y and 4x-3y=12 using substitution to solve the system of equations.

Mathematics
1 answer:
maw [93]3 years ago
5 0

Answer:

Step-by-step explanation:

you divide the two to the y, which is x=3/2y

then, you simplify the second equation to y, which is -3y= -4x+12

then, you substitute the x=3/2y into the second equation,

-3y = -6+12

-3y = 6

y = -2

Substitute the y into the first equation, x= 3/2y,

x = -3

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ohaa [14]
Divide 1,536 by 24 to find out how many calories are in 1 muffin. Then multiply by 3.

1536/24 = 64

64 x 3 = 192
5 0
3 years ago
Read 2 more answers
Answer these Please
Serggg [28]
1b) 70, 40
1c) 45, 90
1d) 25%
1e) 5%
2a) 360
2b) 180
2c) protractor
2d) compass
2e) diameter
2f) radius
2g) 90
2h) acute

For 1b), the other equal angle would be 70; the remaining angle would be 180-(70+70) = 180-140 = 40.
For 1c), the other equal angle would be 45; the remaining angle would be 180-(45+45) = 180-90 = 90.
For 1d), he saved 50/200; dividing this, we get 0.25; 0.25*100 = 25%.
For 1e), he saved 28/560; dividing this, we get 0.05; 0.05*100 = 5%.
3 0
3 years ago
A dog walker charges a flat rate of $6 per walk plus an hourly rate of $30. How much does the dog walkercharge for a 45 minute w
leonid [27]

hello

from the question given, the dog walker charges a flat rate of $6 and an extra $30 per hour.

we can write out an equation in function notation

let the number of hours be represented by x

f(x)=6+30x

now we can proceed to solve the cost of the walk for 45 minutes

\begin{gathered} 1hr=60\min s \\ \text{xhr}=45\min s \\ x=\frac{45}{60} \\ x=\frac{3}{4} \\ \text{therefore 45mins = 3/4 hours} \end{gathered}

now we can input the value into the equation and know the cost for 45 minutes walk

\begin{gathered} f(x)=6+30x \\ x=\frac{3}{4} \\ f(x)=6+30(\frac{3}{4}) \\ f(x)=6+22.5 \\ f(x)=28.5 \end{gathered}

from the calculation above, the cost of 45 minutes walk will cost $28.5

6 0
1 year ago
Please help this is kind of confusing
faltersainse [42]

Answer:

61

Step-by-step explanation:

(2x + 3) + (x - 6) = 180

3x - 3 = 180

3x = 183

x = 61

7 0
3 years ago
Rachel was carpeting a square-shaped room. The area of the room was 165 square feet. Which of the answer choices shows the lengt
nekit [7.7K]

Answer: 13

Step-by-step explanation:

Area = 165

Area of square is :

Area = length × length

Let length be l

165 = l ^ 2

Square both side

l = sqrt(165)

l = 12.85

l = 13 to the nearest whole number

8 0
3 years ago
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