All categories

3 years ago

Substitution y=× +5 2x-y=-2

2 answers:

3 0

We know what y equals already.

y = x + 5

2x - x + 5 = -2
x + 5 = -2
-5 -5

x = -7

y = -7 + 5
y = -2

Now we have our values

Answer: (-7,-2)
or
x = -7
y = -2

zubka84 [21]3 years ago

3 0

So, we substitute the y in the second equation to solve for x-value.

2x-(x+5) = -2
2x-x-5 = -2
x-5 = -2
+5 +5
x = 3

As we got the x-value, we now have to find the value of y.

y = x+5
y = 3+5
y = 8

So, the answer is (3,8)

HOPE THIS HELPS!!!!!

You might be interested in

helpp Jon waits on tables and is paid $5.00 an hour. In a 40-hour period, he earned $210.50 in tips. What were his total earning

Nataly [62]

Add together the income from straight pay and that from tips:

($5/hr)(40 hrs) + $210.50

$200 + $210.50 = $410.50.

Jon's total earnings for the week were $410.50.

7 0

4 years ago

What is the simplified form of the following expression?

ziro4ka [17]

For this case we must simplify the following expression: $7 (\sqrt [3] {2x}) - 3 (\sqrt [3] {16x}) - 3 (\sqrt [3] {8x})$

We rewrite:

$16x = 2 ^ 3 * 2x\\8x = 2 ^ 3 * x$

We rewrite the expression:

$7 (\sqrt [3] {2x}) - 3 (\sqrt [3] {2 ^ 3 * 2x}) - 3 (\sqrt [3] {2 ^ 3 * x}) =$

By definition of properties of powers and roots we have:

$\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}$

Then, taking the terms of the radical:

$7 (\sqrt [3] {2x}) - 3 (2 \sqrt [3] {2x}) - 3 (2 \sqrt [3] {x}) =\\7 \sqrt [3] {2x} -6 \sqrt [3] {2x} -6 \sqrt [3] {x} =$

We add similar terms:

$\sqrt [3] {2x} -6 \sqrt [3] {x}$

Answer:

Option C

7 0

3 years ago

What is 600 is 10 times as much as

svetoff [14.1K]

Let x = our unknown number

10x = 600

Divide by 10 on both sides to isolate the variable x.

x = 600/10

x = 60

600 is 10 times as much as 60.

8 0

4 years ago

Two increased by three equals the quotient of ten and two.

Marrrta [24]

Answer: 5 = 5 or true its an equal equation.

Step-by-step explanation:

The equation would look like this: 2 + 3 = 10 divided by 2. This equation is extremely easy it turns out to be 5 = 5 because 2 + 3 = 5 and 10 divided by 2 is 5 so your final answer is 5 = 5 or if its a true or false question, the answer is true it is an equal equation. Please mark me brainliest. -Cyrusskywalker

5 0

3 years ago

An English professor determined the mean of her final exam scores to be 78 with a standard deviation of 6.3. Find the minimum an

Morgarella [4.7K]

Solution: We are given:

$Mean =78, Standard-deviation =6.3$