3 years ago

PLEASE HELP ASAP!!

Mathematics

1 answer:

alex41 [277]3 years ago

7 0

Step-by-step explanation:

e = 20sin(πt/4 - π/2)

= 20[(sinπt/4)(cosπ/2) - (cosπt/4)(sinπ/2)]

Used sin(x - y) = sinxcosy - cosxsiny.

= 20[0 - cosπt/4]

Since cosπ/2 = 0 and sinπ/2 = 1.

= -20cosπt/4.

You might be interested in

8 increased by three times a number

nexus9112 [7]

The answer would be 24

6 0

3 years ago

Which statement is correct?

iragen [17]

Answer:

I think its OB but I'm not sure

Step-by-step explanation:

4 0

3 years ago

Faction Equivalent demcimal for 2.46

Paul [167]

Here is you're answer:

In order to find the answer you have to switch all the options into decimals to see which one is equivalent to 2.46!

$\frac{246}{1000}$
$\frac{246}{1000} = 246 \div 1000 = 0.246$
$2\frac{46}{1000}$
$2\frac{46}{1000} = \frac{1023}{500} = 1023 \div 500 = 2.046$
$2 \frac{23}{50} = \frac{123}{50} = 123 \div 50=2.46$ <-- You're answer.
$\frac{223}{500} = 223 \div 500 = 0.446$

Therefore you're answer is option C "2 23/50." Remember when wanting to find the decimal divide the numerator by the denominator after you convert the mixed number (if it's a mixed number) into a improper fraction!

Hope this helps!

8 0

3 years ago

A savings account for a car is set up with an initial balance of $1500, and 250 is added every month (no other

pychu [463]

Answer:

ok so first we subtract 1500

5000-1500=3500

3500 divided by 250= 14

So it will take 14 months

Hope This Helps!!!

8 0

3 years ago

How much is 79tens plus 10 tens in standard form

IrinaVladis [17]

Is it 79 sets of ten or 79 tenths

6 0

3 years ago

Read 2 more answers