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2 years ago

PLS Help Ill give you 20 points.

Mathematics

2 answers:

Soloha48 [4]2 years ago

7 0

What the other person said was 100% correct

shepuryov [24]2 years ago

4 0

Answer:

Mia and her family went to dinner, and the bill, including tax, came to $54.65. Mia suggested giving the server a gratuity of about 20 percent of the bill.

If they give a gratuity of 20 percent, what would be the tip rounded to the nearest dollar?

✔ $11

If they give a gratuity of 20 percent, rounded to the nearest dollar, what is the total cost of the dinner, including the tip?

✔ $65.65

Step-by-step explanation:

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1.) Alexander jumped off a cliff into the ocean in Acapulco while on vacation. His height as a function of time could be modeled

Dmitrij [34]

So hmmm check the graph below

now.. to find the vertex of any quadratic

$\bf \textit{vertex of a parabola}\\ \quad \\

\begin{array}{lccclll}
h(t)=&-16t^2&+16t&+480\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

so... how long did it take? well, it took $\bf -\cfrac{{{ b}}}{2{{ a}}}$

what was the highest point? well, it was $\bf {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}$

when did he hit the water? well, at y = 0
that is $h(t) = -16t^2 + 16t + 480 \implies 0 = -16t^2 + 16t + 480,$

solve for "t"

6 0

2 years ago

ind the length of the longest side of the rectangle whose vertices are given. A(2, 1), B(5, 4), C(0, 3), D(3, 6) 2 rad2 3 rad2 r

trasher [3.6K]

Distance between A and B

= Distance between C and D

= sqrt((4 - 1)^2 + (5 - 2)^2)

= sqrt(3^2 + 3^2)

= sqrt(2 * 3^2)

= sqrt(3^2) * sqrt(2)

= 3sqrt(2)

Distance between B and C

= Distance between A and D

= sqrt((4 - 3)^2 + (5 - 0)^2)

= sqrt(1^2 + 5^2)

= sqrt(26)

Since sqrt(26) is more than 3sqrt(2), the length must be sqrt(26).

Hope this helps you.

5 0

2 years ago

To get a final grade of B, a student must have an average mark on five tests that is greater than or equal to 80 and less than 9

yulyashka [42]

Answer:

Lisa must get an 88.75 or higher to stay in between 80 and 90.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

What is the inverse of f(x)=3x+6 ?

scZoUnD [109]

Answer:

$\boxed{\sf \ \ f^{-1}(x)=\dfrac{x-6}{3} \ \ }$

Step-by-step explanation:

hello,

we can write

$fof^{-1}(x)=x \ and \ fof^{-1}(x)=f(f^{-1}(x))=3f^{-1}(x)+6 \ so\\3f^{-1}(x)+6=x \ \ subtract \ 6\\3f^{-1}(x)=x-6 \ \ divide \ \ by \ \ 3\\ f^{-1}(x)=\dfrac{x-6}{3}$

hope this helps

3 0

3 years ago

How to solve 10(x+4)(x-4)

IceJOKER [234]

Answer:

1 Use Difference of Squares:

a^2-b^2=(a+b)(a−b).

10(x^2-4^2)

2 Simplify 4^2 to 16

10(x^2 −16)

3 Expand by distributing terms.

10x^2 −160

Step-by-step explanation:

Hope dis helps and pls mark me as brainlist!!!

§ALEX§

4 0

3 years ago