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sasho [114]
3 years ago
15

Please help anyone plese lol

Mathematics
2 answers:
Leni [432]3 years ago
4 0

Answer:

19.5

Step-by-step explanation:

Kobotan [32]3 years ago
3 0

Answer:

19.5

Step-by-step explanation:

78÷4

=39÷2

=19.5

The Answer is 19.5

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Mitchell buys a rug that is 3.8 meters long and 0.9 meters wide. How many square meters does the rug cover? Record your answer b
Bond [772]

Answer:3.42

Step-by-step explanation:to get the answer to a area equation you need to multiply the length by the width.

5 0
3 years ago
The power generated by an electrical circuit (in watts) as function of its current x (in amperes) is modeled by: P(x)=-12x^2 +12
Minchanka [31]

Given:

The power generated by an electrical circuit (in watts) as function of its current x (in amperes) is modeled by:

P(x)=-12x^2+120x

To find:

The current that will produce the maximum power.

Solution:

We have,

P(x)=-12x^2+120x

Here, leading coefficient is negative. So, it is a downward parabola.

Vertex of a downward parabola is the point of maxima.

If a parabola is f(x)=ax^2+bx+c, then

Vertex=\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)

In the given function, a=-12 and b=120. So,

-\dfrac{b}{2a}=-\dfrac{120}{2(-12)}

-\dfrac{b}{2a}=-\dfrac{120}{-24}

-\dfrac{b}{2a}=5

Putting x=5 in the given function, we get

P(5)=-12(5)^2+120(5)

P(5)=-12(25)+600

P(5)=-300+600

P(5)=300

Therefore, 5 watt current will produce the maximum power of 300 amperes.

6 0
3 years ago
I need help for solving
lys-0071 [83]
5) w/8 =11+5 → w/8=16
w=16÷8=2

6)a/-2 -6=1
a/-2=7
a=7×-2=-14

7)k/2=22
k=44
3 0
3 years ago
Students are selling raffle tickets for a school fundraiser. They collect $25 for every 10 raffle tickets sold. Rain equation th
Free_Kalibri [48]

Answer: m= $25/10 r

Step-by-step explanation:

Let m= money

r= raffle ticket

Then according to the statement

m= $25 for 10 tickets

so 10 tickets= $25

Or the equation goes,

m= $25/10 r

7 0
2 years ago
How to solve radicals
sattari [20]

Answer:

Step-by-step explanation:

1) Find the common denominator.

2) Multiply everything by the common denominator.

3) Simplify.

4) Check the answer(s) to make sure there isn't an extraneous solution.

7 0
2 years ago
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