All categories

3 years ago

What is 2x + 7y = –10?

Mathematics

2 answers:

Wittaler [7]3 years ago

7 0

The answer isX=1 1/9

lubasha [3.4K]3 years ago

6 0

Answer:

-1 1/9

Step-by-step explanation:

2x + 7x = -10 (equation)

9x = -10 (combine like terms)

x = -10/9 (move the 9 over)

x = -1 1/9 (simplify)

You might be interested in

What is the equation of the line that passes through (-3, -1) and has a slope of 2/5? Put your answer in slope-intercept form.

Zanzabum

Hi there!

The general formula of A line in slope-intercept form is the following:
$y = mx + n$

In this formula m represents the slope of the line. Therefore, we can conclude that m = 2/5.
$y = \frac{2}{5} x + n$

We also know that the line passes through the point (-3, -1) and we can therefore substitute this coordinate into the formula of the line.
x = -3 and y = -1

$- 1 = \frac{2}{5} \times - 3 + n$

Multiply first.
$- 1 = - 1\frac{1}{5} + n$

And finally add 1 1/5 to both sides of the equation.
$\frac{1}{5} = n$

We can now switch sides.
$n = \frac{1}{5}$

Now we've found our value of n, which we can substitute into the formula of our line. Hence, in slope-intercept form, we find the following:
$y = \frac{2}{5} x + \frac{1}{5}$

7 0

3 years ago

If joe had 35 apples and sold 3 people 5 each how many does he have

Wewaii [24]

Answer: Joe has 20 remaining apples

[to get your answer, subtract, 35 - 5 - 5 - 5]

6 0

3 years ago

Read 2 more answers

Suppose the linear regression line y=2.1x+130 predicts sales based on the money spent on advertising. If x represents the dollar

slega [8]

Linear regression line y=2.1x+130 predicts sales based on the money spent on advertising.

Linear regression represents the relationship between two variables. the value of y depends on the value of x.

x represents the dollars spent in advertising and y represents the company sales in dollars.

We need to find out sales y when $150 spends on advertising.

Plug in 150 for x and find out y

y = 2.1 x + 130

y = 2.1 (150) + 130

y= 445

The company expects $445 in sales

5 0

3 years ago

In the Sahara Desert one day it was 146°F. In the Gobi Desert a temperature of -35°F was recorded. What is the difference betwee

VMariaS [17]

The difference is 181 degrees.

Subtract 146 by -35 (146 - -35)
When a negative it being subtracted replace it with a positive because two negatives make a positive (146+35) which gets you 181

8 0

3 years ago

Simplify.

MakcuM [25]

Answer:

you just need to simplify all the answers so 9 and 4 - 6 + 2 + 3 you need to keep like adding all the answers together and whatever one gets you to what it's telling you then that's the answer

Step-by-step explanation:

I'm sorry if this doesn't make sense but I hope it helps

8 0

2 years ago

Read 2 more answers