Given that 2x-7y=30

Mathematics

1 answer:

lidiya [134]3 years ago

4 0

Answer:

y = - $\frac{24}{7}$

Step-by-step explanation:

Substitute x = - 3 into the expression

2x - 7y = 30

2(- 3) - 7y = 30

- 6 - 7y = 30 ( add 6 to both sides )

- 7y = 36 ( divide both sides by - 7 )

y = $\frac{36}{-7}$ = - $\frac{36}{7}$

You might be interested in

(5x4 + 5x3 + 4x - 9) + (2x4 + 7x2 + 2x + 14)

ladessa [460]

Answer:

7x⁴ + 5x³ + 7x² + 6x + 5

Step-by-step explanation:

The given expression is

(5x4 + 5x3 + 4x - 9) + (2x4 + 7x2 + 2x + 14)

The first step is to open the brackets by multiplying each term inside each bracket by the term outside each bracket. Since the term outside each bracket is 1, the expression becomes

5x⁴ + 5x³ + 4x - 9 + 2x⁴ + 7x² + 2x + 14

We would collect like terms by combining each term with the same exponent or raised to the same power. The term would be arranged in decreasing order of the exponents. It becomes

5x⁴ + 2x⁴ + 5x³ + 7x² + 4x + 2x - 9 + 14

7x⁴ + 5x³ + 7x² + 6x + 5

7 0

3 years ago

A scientist graphed the locations of the epicenterof an earthquake and all of the places wherepeople reported feeling the earthq

Mamont248 [21]

The question is not clear here for me plz put the graph so I may answer

4 0

3 years ago

Find the midpoint of the segment with the following endpoints.<br> (-3,-3) and (1, 2)

Vlad [161]

$\left(\frac{-3+1}{2}, \frac{-3+2}{2} \right)=\boxed{\left(-1, -\frac{1}{2} \right)}$