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3 years ago

All I need is for someone to explain how you get this answer !!

Mathematics

2 answers:

ale4655 [162]3 years ago

4 0

This is one of the easiest ways to get the answer

77julia77 [94]3 years ago

4 0

Answer:

THATS EASY HAHA JJUST DOWNLOAD THIS APP MATHSOLVER ITS EFFECTIVE

Step-by-step explanation:

HOPE IT HWLPS

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Find AC 1.5 cm 3.5 cm 5.0 cm 4.9 cm

yanalaym [24]

Answer:

4.9

Step-by-step explanation:

1.7+3.2=4.9

8 0

3 years ago

1 A high school talent show lasted a total of t minutes. There were 2 intermissions that were each the length of 8 the talent sh

Sophie [7]

Answer:

I think f(t)=1/4t

Step-by-step explanation:

Because of you multiply 1/8 times 2, it gives you 1/4. Not 100% sure tho

4 0

3 years ago

Where do I place the dots at?

Vinvika [58]

Answer:

Step-by-step explanation:

7 0

3 years ago

Amir throws a stone off of a bridge into a river. The stone's height (in meters above the water) ttt seconds after Amir throws i

Harrizon [31]

Answer:

1) The vertex form of $h(t) = -5\cdot t^{2}+20\cdot t +160$ is $h -180 = -5\cdot (t-2)^{2}$ , 2) The stone reaches its maximum height 2 seconds after being thrown.

Step-by-step explanation:

1) Given that height of the stone is represented by a second-order polynomial, which depicts a parabola as graph. The best approach to determine the instant when stone reaches its highest is by vertex form, whose form is:

$h-k = C\cdot (t-r)^{2}$

Where:

$r$ , $k$ - Instant and maximum height of the stone, measured in seconds and meters.

$C$ - Vertex constant, which must be negative as there is an absolute maximum, measured in meters per square second.

Let be $h(t) = -5\cdot t^{2}+20\cdot t +160$ , which is transformed into vertex form:

i) $h = -5\cdot t^{2}+20\cdot t +160$ Given

ii) $h = -5\cdot (t^{2}-4\cdot t -32)$ Distributive property/ $(-a)\cdot b = -a\cdot b$

iii) $h = -5\cdot [(t^{2}-4\cdot t +4)+(-36)]$ Existence of additive inverse/Definitions of addition and subtraction

iv) $h = (-5)\cdot (t-2)^{2}+180$ Distributive property/ $(-a)\cdot (-b) = a\cdot b$ /Perfect square binomial

v) $h -180 = -5\cdot (t-2)^{2}$ Compatibility with addition/Existence of additive inverse/Modulative property/Definition of subtraction/Result

The vertex form of $h(t) = -5\cdot t^{2}+20\cdot t +160$ is $h -180 = -5\cdot (t-2)^{2}$ .

2) The time can be extracted from previous results, which indicates that stone reaches its maximum height 2 seconds after being thrown.

4 0

3 years ago

Let H represent the height of the Colossus roller coaster. Explain why H - 13= 184 and h-34=163 are equivalent equations. Then e

Liula [17]

Explanation:

The two equations are $H-13=184$ and $H-34=163$

To determine why the two equations are equivalent, let us solve the equation.

Consider solving the equation $H-13=184$ , we get,

Adding 13 on both sides, we get,

$H=197$

Consider solving the equation $H-34=163$ , we get,

Adding 37 on both sides, we get,

$H=197$

Thus, when solving both the equations, the value of H is equal.

Since, the value of H is equal, the equations $H-13=184$ and $H-34=163$ are equivalent equations.

The meaning of the solution:

A value of a variable which makes the equation true is called a solution.

Here the value of the variable H is 197. Let us substitute the value in the equations $H-13=184$ and $H-34=163$ to determine whether it makes the equation true.

Let us substitute $H=197$ in $H-13=184$ , we get,

$197-13=187$

$187=187$

Hence, $H=197$ is true solution.

Also, let us substitute $H=197$ in $H-34=163$ , we get,

$197-34=163$

$187=187$

Hence, $H=197$ is true solution.

3 0

4 years ago