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Karo-lina-s [1.5K]
3 years ago
9

Find the value of x in the following system of equations:

Mathematics
1 answer:
WITCHER [35]3 years ago
3 0

Answer:

c.) x = 3

Step-by-step explanation:

2x - 3y = 9

x = 4 + y

Substitute the second equation into the first equation

2(4+y) - 3y = 9

Distribute

8+2y -3y =9

8-y = 9

Subtract 8 from each side

8-y-8 =9-8

-y = 1

Multiply by -1

y =-1

Now solve for x

x = 4-1

x =3

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Identify the transformation in which every point of a figure is moved to the same distance in the same direction.
Nastasia [14]

Answer:

reflection

Step-by-step explanation:

think of it as looking in a mirror

4 0
3 years ago
A diamond ring increases in value at a rate of 5% per year. If the ring was purchased for $1200, which equation would calculate
Margarita [4]

Answer:

A - y = 1200(1+.05)^30

Step-by-step explanation:

In this case, you need to calculate the future value and the formula to calculate that is:

FV=PV*(1+r)^n

FV=future value

PV=present value

r=rate

n=number of periods of time

The present value would be the price of the ring which is $1200. The rate is 5% per year and the number of periods of time is 30 years since you need to find the ring's worth in 30 years. Now, you can replace the values on the formula:

FV=1200*(1+0.05)^30

According to this, the answer is that the equation to calculate how much will it be worth in 30 years is: y = 1200(1+.05)^30.

8 0
3 years ago
Can someone help me
nexus9112 [7]

Answer:

(2/3)y - (8/3) = x For the first one maybe?


Step-by-step explanation:

1. y = (3/2) x + 4

y - 4 = (3/2) x

(2/3)y - (8/3) = x


2. If output is 2, f(x) = 2.

So, 2 = (3/2) x + 4

-2 = (3/2) x

-4 = 3x

x = -3/4

6 0
3 years ago
Please help I do not understand this at all and I need help​
KengaRu [80]

Answer:

c

Step-by-step explanation:

28+35+21+12=96

7 0
3 years ago
What is the difference between greatest common divisor and greatest common denominator ?
il63 [147K]

The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4. The largest is 4, so we say that the GCF of 12, 20, and 24 is 4. GCF is often used to find common denominators

7 0
3 years ago
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