2 years ago

Which expression can be substituted for y in the top equation of the

Mathematics

1 answer:

maria [59]2 years ago

6 0

Answer:

Y=7+3x, x=-3, y=-2

Step-by-step explanation:

3x-5y=1. Equation 1

3x-y=-7. Equation 2

-y=-7-3x isolate for y in equation 2

y=7+3x multiplied by -1 to get positive y

3x-5(7+3x)=1 substitute y value of equation 2 (7+3x) into equation 1

3x-35-15x=1

-12x=36

x=-3

solve for y.

3x-5y=1

3(-3)-5y=1

-9-5y=1

-5y=10

y=-2

You might be interested in

Find the value of f(-9)

almond37 [142]

Answer: 2

Step-by-step explanation:

When x=-9, y=2. So, f(-9)=2.

7 0

2 years ago

QUESTION if h(x) =f(2-x)+1 determine the range of h

lesantik [10]

Answer:

h(x) =f(2-x)+1

determine the range

5 0

2 years ago

Start with 2 Rabbits.Each pair has 4 babies per month.How much will they have by the 12 month?

Vikki [24]

2 Rabbits multiplied by 4 equals 8 multiplied by 12 equals 96.

4 0

2 years ago

Read 2 more answers

What is the common ratio of the geometric sequence? 118, 13, 2, 12, 72, ... answers 12 .....1/6......60......6

AnnyKZ [126]

There is no answer to this in Geometric Sequence. Please check the question and type it again. I am not writing this to gain points, I already have a lot, but to let you know that there is no sequence for this question.

Hope it's clear to you:)

3 0

3 years ago

Determine the sum of the first 27 even Natural Numbers. 378 2,700 270 756

kicyunya [14]

Answer:

this is called AP arithmetic progression

2, 4, 6.........

sn=n/2(2a+(n-1)d)

S27=

$\frac{27}{2 } (2 \times 2 + (27 - 1)2)$

$\frac{72}{2} (4 + (26 \times 2)$

$\frac{27}{2} (4 + 52)$

$\frac{27}{2} \times 56$

$27 \times 28$

=756

3 0

1 year ago