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3 years ago

Please help me I really don’t know

Mathematics

1 answer:

Mazyrski [523]3 years ago

7 0

Answer:

acute-angled

Step-by-step explanation:

It doesn't have a right angle and one of its corners isn't for than 90 degrees

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Activity 3

skad [1K]

Answer:

19 Lollipops per friend

Step-by-step explanation:

$60-3=57\\\\57/3=19$

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2 years ago

Read 2 more answers

You buy a movie ticket for $5.25 and popcorn for $2.98. You pay with a 10-dollar bill. How much change will you get back?

slava [35]

Answer:

$1.77

Brainliest please?

Step-by-step explanation:

5.25+2.98=8.23

10-8.23=1.77

4 0

2 years ago

A segment has endpoints (-9,-20) and (14,12). What is the midpoint of this segment

Darya [45]

((-9+14)/2, (-20+12)/2)
(5/2,-8/2)
(5/2,-4)

3 0

3 years ago

An mp3 player is on sale for 30% off the regular price of $39.98. How much is the discount? a. $11.99 b. $13.19 c. $13.33 d. $27

bagirrra123 [75]

Answer:

$11.99

https://www.percent-off.com/_30_%25+off_39.98_

(A calutor for you to use I used it to help my mom shop)

6 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