3 years ago

Evaluate the expression: 5x – y when x = -4 and y= -2 marked as brainliest :)

Mathematics

1 answer:

sp2606 [1]3 years ago

7 0

It's a good idea to get into the habit of

using parenthses when substituting

numbers in for variables.

Since x = -4 and y = -2, 5x - y is 5(-4) - (-2).

Now, 5(-4) is -20 and minus a negative 2

can be thought of as plus a positive 2.

So we have (-20) + (+2) which equals -18.

You might be interested in

At noon, Manny's Café had 12 banana muffins, 10 chocolate muffins, 6 blueberry muffins, and 7 vanilla muffins. What is the proba

Ludmilka [50]

Its 1/5 likely because my teacher helped me with this problem you welcome:)

4 0

3 years ago

Whoever give me the answer to this i will mark them as the Brainest if x = 5,y = 2 and z = 3 then xz ( 4y- 2z) is A. 3445 B. 210

max2010maxim [7]

x= 5 x z= 3 = 15 (4y - 2z) = 60 - -30 = 30 so its C

8 0

3 years ago

A group of friends wants to go to the amusement park. they have no more than $405 to spend on parking and admission. parking is

lakkis [162]

$20+38.50x \leq 405$

4 0

1 year ago

Lines a and b are parallel.<br><br><br><br> What is the measure of angle m?

Arisa [49]

Answer: 55 degrees

Step-by-step explanation:

180-125=55

125 and m make a half a turn which equals 180

4 0

3 years ago

3 part question-Show work for part a and part c

blagie [28]

Answer:

Step-by-step explanation:

Part A: You can only use Pythagorean's Theorem on a right triangle.

Part B: The side across from the right angle is the hypotenuse. It has a length of 15.

Part C: To find the missing side using Pythagorean's Theorem:

$a^2+11^2=15^2$ and

$a^2+121=225$ and

$a^2=104$ and

a = 10.20

5 0

3 years ago