2 years ago

7x +9y for x=-3 and y=2

Mathematics

1 answer:

Rama09 [41]2 years ago

5 0

$7x + 9y, \: where \: x = - 3, \: and \: y = 2 \\$

Plugging in our values,

$7( - 3) + 9(2)$

Evaluating our values,

$- 21 + 18 = - 3$

You might be interested in

7x ^4 minus 5x ^4 =

lapo4ka [179]

Answer:

2x^{4}

Step-by-step explanation:

You would subtract 7 and 5 and you would leave the exponent so it would be 2x^{4}

8 0

3 years ago

Read 2 more answers

What is an equation of the line that passes through the points (-4,1) and (4,4)?

Ray Of Light [21]

Answer:

y = $\frac{3}{8} x + \frac{5}{2}$

Step-by-step explanation:

☆Remember: $m = \frac{y_2 - y_1}{x_2 - x_1}$

☆Remember: Slope-intercept form -> y = mx + b

☆Now. We first need to find the slope.

$m = \frac{4 - 1}{4 - (- 4)} = \frac{3}{8}$

☆Now the y-intercept.

$y = mx + b \\ \\ 4 = \frac{3}{8} (4) + b \\ \\ 4 = \frac{3}{2} + b \\ \frac{ - \frac{ 3}{ 2} = - \frac{ 3}{ 2} \: \: \: \: \: \: \: \: \: \: }{ \frac{5}{2} = b }$

8 0

2 years ago

What is the slope of a line that passes through the points (2,5) and (4,9)

ahrayia [7]

Answer:

Step-by-step explanation:

slope = difference of y/ difference of x

m = (9-5) / (4-2) = 4/2 = 2

8 0

3 years ago

Liberty solved the following equation 3 + 2x

frutty [35]

Where is the rest of the question

6 0

3 years ago

Read 2 more answers

There was 2/3 of a fruitcake left over. Ella ate 1/5 of it. How much of the whole fruitcake did she eat?

liq [111]

2/3 * 1/5 = 2/15
A) 2/15

7 0

3 years ago