What does he mean on question one

Mathematics

1 answer:

Katarina [22]2 years ago

6 0

You plug -2 in for the function k(p) and add it to the function g(w), getting
(-2+3)*(-2-7)+(-2-5)^2=1*-9+49=40 for a - I challenge you to do B on your own!

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Whitney goes into Rodger’s Pizza-Toy store and buys a toy for $14. She gives Rodger a $20 bill. Rodger doesn't have any change,

Shtirlitz [24]

Answer:

I think Roger $40

Step-by-step explanation:

He got scammed by Whitney for $20 then had to give Plato an actual $20 bill

7 0

2 years ago

Martin had 7 pounds of grapes left, and he gave away 2 5 of them. Explain how to use compatible numbers to estimate the amount o

nalin [4]

Compatible numbers are numbers which are easy to do mental calculation. For example is when doing division like 25 and 5, 100 and 10, and 36 and 6.

First, we know that: 7 pounds=5 pounds + 2 pounds

or 7=5+2

In mathematics, the word “of” means to multiply. So:

grapes given away = 7 * (2/5)

Replacing 7 with 5 and 2:

= (5+2)*(2/5)

Using the distribution principle:

=5*(2/5) + 2*(2/5)

=2+ 4/5

=2 4/5

So grapes given away is 2 4/5 pounds.

3 0

3 years ago

Read 2 more answers

How many terms are there in a geometric series if the first term is 4, the common ration is 3 and the sum of the series is 160

Marina CMI [18]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
S_n=160
\end{cases}$

$\bf 160=4\left( \cfrac{1-3^n}{1-3} \right)\implies 160=4\left( \cfrac{1-3^n}{-2} \right)\implies 160=-2(1-3^n)
\\\\\\
160=2(3^n-1)\implies \cfrac{160}{2}=3^n-1\implies 80=3^n-1
\\\\\\
81=3^n~~
\begin{cases}
81=3\cdot 3\cdot 3\cdot 3\\
\qquad 3^4
\end{cases}\implies 3^4=3^n\implies 4=n$

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2 years ago

Which expression is equivalent to -3(4x-0.50)? PLEASEEEEEEEEEEEEE HELPPP

Misha Larkins [42]

Final Answer: $-12x + 1.5$