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Alexeev081 [22]
4 years ago
12

Please help! Two math problems!!!

Mathematics
1 answer:
Fynjy0 [20]4 years ago
3 0

Answer:

Tell me if i am wrong. :)

Step-by-step explanation:

To solve for y:

Q.1   2x + y = -1

       y = -1 - 2x

Q. 2.  4x - 5y = 7

        y = 7 - 4x over -5

 

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A triangle has side measures of 8, 13, 15. Are these the measures of a RIGHT Triangle?
Andreas93 [3]

Answer:

No.

Step-by-step explanation:

Since we know the side lengths of the triangle, we can figure out whether or not this is a Pythagorean triple.

Pythagorean theorem: a^2 + b^2 = c^2

a and b are both smaller than c.

So,

8^2 = 64.

13^2 = 169.

15^2 = 225.

64 + 169 = 233.

233 is not equal to 225.

Therefore, this is not a right triangle.

6 0
3 years ago
Find the slope of the line through these pair of points.<br><br> (12,-18) (-15,-18)
zysi [14]
The slope, m, is given by the equation m = (y2-y1)/(x2-x1), where (x1, y1) and (x2, y2) are points on the graph. Thus:
m = (-18-(-18))/(-15-12)
= (-18+18)/-27
= 0/27 = 0
Therefor the slope is 0
8 0
3 years ago
How would I answer this: How many minutes are in a 30-day month.... use vertical multiplication to get the right answer
cluponka [151]

Answer:

There are 43200 minutes in a 30-day month.

Step-by-step explanation:

We know that:

60 minutes = 1 hour

24 hours = 1 day

Thus to determine the minutes in a 30-day month, let us first determine the number of hours in the month.

   30

x  24

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 60

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The 30-day month has a total of 720 hours.

So that the number of minutes that make up 720 hours can be determined by;

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 x   60

_______

   000

4320

_______

43200

Therefore, there are 43200 minutes in a 30-day month.

3 0
3 years ago
PLEASE HELP im dying over here
Iteru [2.4K]
\dfrac{x}{24\sqrt{2}}=\cos45^\circ\\\\\\\dfrac{x}{24\sqrt{2}}=\dfrac{\sqrt{2}}{2}\qquad\qquad\qquad\text{(cross multiply)}\\\\\\2x=24\sqrt{2}\cdot\sqrt{2}\\\\2x=24\cdot2\quad|:2\\\\\boxed{x=24}
7 0
3 years ago
What is this tool used for ?
stealth61 [152]

Answer: An item or implement used for a specific purpose. A tool can be a physical object such as mechanical tools including saws and hammers or a technical object such as a web authoring tool or software program.

Step-by-step explanation: thank for watching.......

8 0
3 years ago
Read 2 more answers
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