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3 years ago

Is (-5, 8)a solution for y-2x>17?

1 answer:

7 0

You can plug in the numbers to check.
Y - 2x > 17
(8) -2(-5) > 17
8 + 10 > 17
18 > 17
This is true so
Final answer:
Yes, (-5,8) is a solution

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3 years ago

nathan works at a hardware store today he sold 48 tools 5/6 of the tools he sold were hammers how many hammers did nathan sell t

SSSSS [86.1K]

Answer:

He sold 40 hammers.

Step-by-step explanation:

5/6 of 48 tools.

This just means 5/6*48, which is 40.

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3 years ago

Is -cos(x) the same as cos(-x)?

miss Akunina [59]

Answer:

Not the same

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3 years ago

Help me please find the surface area:

gtnhenbr [62]

Step-by-step explanation:

this consists of 5 sides

top and bottom (equal)

left

right

front

the total surface area is the sum of all 5 areas.

the area of a rectangle is

length × width

the area of a triangle is

baseline × height / 2

in our case we have

top and bottom : 10×4/2 × 2 = 10×4 = 40 cm²

left : 8×9 = 72 cm²

right : 5×9 = 45 cm²

front : 10×9 = 90 cm²

the total surface area is

40 + 72 + 45 + 90 = 247 cm²

7 0

2 years ago

25 points!!!!!!!!!!!!!!!!!!

Dmitrij [34]

Answer:

14.2

Step-by-step explanation:

Hi there!

We are given a 30-60-90 triangle

The triangle is a right triangle, since one of the angles measures 90 degrees

We are also given that the length of the hypotenuse (the side OPPOSITE from the right angle) is 6

We want to find the perimeter of the triangle

There are special formulas to find the other sides of the triangle, if we know that:

a. the triangle is a right triangle

b. we know the length of the hypotenuse

These two formulas are:

If the length of the hypotenuse in a triangle is a, then the length of the side OPPOSITE from the 30 degree angle is $\frac{a}{2}$

The length of the side OPPOSITE from the 60 degree angle is $\frac{a\sqrt{3} }{2}$

In this problem, we are given that a=6, so that means that in order to find the length of the other sides:

The length of the side opposite from the 30° angle: $\frac{a}{2} = \frac{6}{2} = 3$

The length of the side opposite from the 60° angle: $\frac{a\sqrt{3} }{2} = \frac{6\sqrt{3} }{2} = 3\sqrt{3}$ , or about 5.2

Now, to find the perimeter, we add the lengths of these sides together.

6 + 3 + 5.2 = 14.2

Hope this helps!

5 0

2 years ago