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avanturin [10]
2 years ago
10

Explain why the square root of 64 has a positive and a negative value.

Mathematics
1 answer:
Fantom [35]2 years ago
6 0

Answer:

Get closer to God before its to late

Step-by-step explanation:

Do that

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Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
DaniilM [7]

Answer:

y=20x+150

Step-by-step explanation:

Sandy has 150 dollars ALREADY in her account, so each time she earns the money it is building upon. 20x (x because we don't know for how many months.)

Hope this helps ;)

8 0
3 years ago
Isaac and Albert spot a hot air balloon flying at a low altitude. They decide to calculate its height by standing 400 feet apart
yarga [219]

Answer:

144 feet to nearest foot.

Step-by-step explanation:

Let the distance between Albert and the point on the ground that the balloon is directly above be x feet Then for Isaac the distance is 400 - x feet

So we have 2 right angled triangles and:

tan 62 = h/x

tan 48 = h / (400- x)         where h is the height of the balloon.

From the first equation x = h / tan 62 so plugging this into the second one:

tan 48 =  h /  ( 400 - h/tan 62)

h = 400 tan 48 - h tan 48 tan 62

h + h tan 48 tan 62 = 400 tan 48

h ( 1 + tan48 tan62) = 400 tan48

h = 400 tan 48 / (1 +  tan 48 tan 62)

= 143.8 feet.

4 0
2 years ago
How can graphics and/or statistics be used to misrepresent data? where have you seen this done?
Anna71 [15]
So basically you need to go up and then along

5 0
3 years ago
NO LINKS!! Please help me with these graphs. Part 1​
AveGali [126]

Problem 9

The instructions aren't stated anywhere, but I'm assuming your teacher wants you to find the equation of each parabola.

The vertex here is (h,k) = (-6,-4) which you have correctly determined.

This means

y = a(x-h)^2 + k\\\\y = a(x-(-6))^2 +(-4)\\\\y = a(x+6)^2 - 4\\\\

Next we plug in one of the other points on the parabola. We cannot pick the vertex again. Let's pick the point (-4,0) which is one of the x intercepts. We'll do this to solve for 'a'

y = a(x+6)^2 - 4\\\\0 = a(-4+6)^2 - 4\\\\0 = a(2)^2 - 4\\\\0 = a(4) - 4\\\\0 = 4a-4\\\\4a-4 = 0\\\\4a = 4\\\\a = 4/4\\\\a = 1\\\\

This means

y = a(x+6)^2 - 4\\\\y = 1(x+6)^2 - 4\\\\y = (x+6)^2 - 4\\\\

represents the equation of the parabola in vertex form.

<h3>Answer: y = (x+6)^2 - 4\\\\</h3>

========================================================

Problem 10

The vertex is (h,k) = (-2,-6)

So,

y = a(x-h)^2 + k\\\\y = a(x-(-2))^2 + (-6)\\\\y = a(x+2)^2 - 6\\\\

Now plug in another point on the parabola like (-1,-8) and solve for 'a'

y = a(x+2)^2 - 6\\\\-8 = a(-1+2)^2 - 6\\\\-8 = a(1)^2 - 6\\\\-8 = a(1) - 6\\\\a-6 = -8\\\\a = -8+6\\\\a = -2\\\\

<h3>Answer:  y = -2(x+2)^2 - 6\\\\</h3>

For each equation, you could optionally expand things out to get it into y = ax^2+bx+c form, but I think it's fine to leave it as vertex form.

7 0
1 year ago
Read 2 more answers
recurring decimals to fractions and give Convert the following she answer a simplest form 0•28 when 8 is recurring​
Ahat [919]

Answer:

13/45

Step-by-step explanation:

x = .2888888888

100(x + .2888888)

100x + 28.8888

 10x + 2.88888

90x = 26

x = 26/90 = 13/45

3 0
3 years ago
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