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2 years ago

The following triangle is and .

Mathematics

1 answer:

devlian [24]2 years ago

8 0

Answer: By angle it is right angle triangle and by side it is isoceles triangle

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Is 7(w)=(7×2)w commutative property or associative property?

Umnica [9.8K]

I don't think those two expressions would even be equal unless w = 0. You can't just add in a 2 from nowhere.

6 0

2 years ago

Read 2 more answers

I put a random encouraging message on here just to spread some positivity/encouragement, and someone deleted it because it "went

malfutka [58]

Answer:

It was probably just because it wasnt a question.

Step-by-step explanation:

Hope this helps! Plz give brainliest!!

4 0

2 years ago

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

8 0

2 years ago

James is kayaking. He can row 3 mph in still water. If he can travel 6 miles downstream in the same amount of time that he can t

nekit [7.7K]

Answer: the speed of the current is 0.6 mph

Step-by-step explanation:

Let x represent the speed of the current.

James is kayaking. He can row 3 mph in still water. If he can travel 6 miles downstream. Assuming he went with the current, it means that his total speed while travelling downstream is (3 + x)

Time = distance/speed

Time taken to travel downstream is

6/(3 + x)

In the same amount of time, he can travel 4 miles upstream. Assuming he went against the current, it means that his total speed while travelling downstream is (3 - x). Time taken to travel upstream is

4/(3 - x)

Since the time is the same, then

6/(3 + x) = 4/(3 - x)

Cross multiplying, it becomes

6(3 - x) = 4(3 + x)

18 - 6x = 12 + 4x

4x + 6x = 18 - 12

10x = 6

x = 6/10

x = 0.6 mph

4 0

3 years ago

I need help on 10,11,12, and 13 plz help me

Mila [183]

10. 14
2 * 7 <==

11. 12
6 * 2
2 * 3 * 2 = 2^2 * 3 <==

12. 15
3 * 5 <==

13. ur gonna have 3 tables that each have 4 chairs

7 0

2 years ago