Ask question

Ask question

All categories

3 years ago

14

On Tuesday the mailman delivers 3 checks for $5 each and 2 bills for each .if you had a starting balance of $25 , what is the en

ding balance

1 answer:

ycow [4]3 years ago

6 0

5x3=15 25+15=40 40-10=30

You might be interested in

What type of word a relationship does this analogy show

Trava [24]

Answer:

part/whole

Step-by-step explanation:

jazz is only a part of music, music is the whole thing and also lave tube would be a part of a bigger thing which is the cave

7 0

3 years ago

Read 2 more answers

Which of the answers are correct? Select all that apply.

Leona [35]

Answer:A, b and also c

Step-by-step explanation:

8 0

3 years ago

PLEASE HELP ASAP 25 POINTS GOOD ANSWERS ONLY!

timama [110]

Answer:

128

Step-by-step explanation:

6 0

3 years ago

Prove the polynomial identity.

aleksandr82 [10.1K]

Explanation:

Since we have given that

$(2x+1)^2-2(2x+1)$

Now, we have to prove it as

$(2x+1)(2x-1)$

Now, start the iterations:

$(2x+1)^2-2(2x+1)\\\\=4x^2+1+4x-4x-2\\\\=4x^2+1-2\\\\=4x^2-1\\\\=(2x)^2-1\\\\=(2x+1)(2x-1)$

So, first blank will be filled with

$4x^2+4x+1$

Second blank will be filled with

$4x^2-1$

Hence proved.

7 0

3 years ago

Find the second derivative, do not have to simplify

zlopas [31]

$f(x)=\sec(\pi x)=\dfrac{1}{\cos(\pi x)}=[\cos(\pi x)]^{-1}\\\\\text{use}\\\\(a^n)'=na^{n-1}\\\\(\cos x)'=-\sin x\\\\f'(g(x))=f'(g(x))\cdot g'(x)$

$f'(x)=\left\{[\cos(\pi x)]^{-1}\right\}'=-[\cos(\pi x)]^{-2}\cdot[-\sin(\pi x)]\cdot\pi\\\\=\dfrac{\pi\sin(\pi x)}{[\cos(\pi x)]^2}=\pi\dfrac{\sin(\pi x)}{\cos(\pi x)}\cdot\dfrac{1}{\cos(\pi x)}\\\\=\pi\tan(\pi x)\sec(\pi x)$

6 0

2 years ago