What does 2x+2y=7 equal to

1 answer:

4 0

Let's solve for x.
2
x
+
2
y
=
7
Step 1: Add -2y to both sides.
2
x
+
2
y
+
−
2
y
=
7
+
−
2
y
2
x
=
−
2
y
+
7
Step 2: Divide both sides by 2.
2
x
2
=
−
2
y
+
7
2
x
=
−
y
+
7
2

Let's solve for y.
2
x
+
2
y
=
7
Step 1: Add -2x to both sides.
2
x
+
2
y
+
−
2
x
=
7
+
−
2
x
2
y
=
−
2
x
+
7
Step 2: Divide both sides by 2.
2
y
2
=
−
2
x
+
7
2
y
=
−
x
+
7
2
Answer:
y
=
−
x
+
7
2

You might be interested in

Type 500 words in 20 minutes<br><br><br> _______ words per minute

7nadin3 [17]

Answer:

Step-by-step explanation:

Divide 500/20

3 0

3 years ago

Read 2 more answers

Factor the trinomial x^2 + 6x - 27

krek1111 [17]

If you factor the trinomial using the AC method the answer would be

(x-3)(x+9)

5 0

3 years ago

Read 2 more answers

Brenda noticed that the reptile building at the zoo was located at the point (-3, 4) on the zoo map. Name the quadrant of the ma

rodikova [14]

It is located in quadrant 2

4 0

2 years ago

One person wants to get a 95% z-confidence interval with a margin of error of at most 15 based on a population standard deviatio

Bess [88]

Answer:

$n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62$

So the answer for this case would be n=62 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample