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3 years ago

PLEASE HELP QUICKLY

Mathematics

1 answer:

Advocard [28]3 years ago

8 0

Answer:

TanA= $\frac{36}{27}$ and sinA=36/45

Step-by-step explanation:

Tan= opposite/adjacent

since 36 is opposite of A and 27 is adjancent to 36 your will use tanA= 36/27

Sin= opposite/hypotenuse

36 is opposite of A and 45 is the hypotenuse

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A rigjt triangle with two congruent legs is always 45-45-90

bekas [8.4K]

Answer:

right angel triangle means one of the three angel is 90

also it is given that two sides are equal

there for it is an isoselas triangle means other two triangles are equal

let the other two angels be x then

then 90 + x + x = 180

2x = 180 - 90

x = 90 ÷2

× = 45

prof. 90 + 45 + 45 = 180

Step-by-step explanation:

hope it helped u buddy

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3 years ago

Can someone help me find the area to this pentagon plz?

natulia [17]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Julia asked to evaluate the expression four to the power of -3 before she can join her classmates outside. She decides to use th

vesna_86 [32]

Negative exponents work like this:

$a^{-b}=\dfrac{1}{a^b}$

So, you have

$4^{-3}=\dfrac{1}{4^3}=\dfrac{1}{64}$

This number is less than 1, so she will play tennis.

3 0

3 years ago

PLEASE ANSWER ASAP!!

ExtremeBDS [4]

Answer:

Fred paid US$ 310 to Social Security as a payroll tax

Fred paid US$ 72.50 to Medicare as a payroll tax

Fred paid 18% of his income to the Federal government as an income tax

Fred paid 5% of his income to the state government as an income tax

Step-by-step explanation:

Fred's earnings in June were $ 5,000

A. Payment to Social Security

5,000 * 6.2% = 5,000 * 0.062 = 310

B. Payment to Medicare

5,000 * 1.45% = 5,000 * 0.0145 = 72.50

C. Federal Income Tax

900/5,000 = 0.18 = 18%

D. State Income Tax

250/5,000 = 0.05 = 5%

3 0

3 years ago

What is summation notation for the series? b. 500+490+480+ . . . . . . . +20+10

marin [14]

The summation notation for the series 500+490+480+ . . . . . . . +20+10 is

$25500-10\sum\limits^{50}_{n=1} {n}$

A summation notation is used to express a long summation into a single notation.

The given series is:

500+490+480+ . . . . . . . +20+10

This is an arithmetic series with:

a(1) = 500, and

d = 490 - 500 = -10

The last term is a(n) = 10. Find n first by using the nth term formula of an arithmetic sequence:

a(n) = a(1) + (n-1) . d

10 = 500 + (n-1) . (-10)

10 = 500 -10n + 10

10 n = 500

n = 50

Write the explicit formula for the nth term:

a(n) = a(1) + (n-1) . d

a(n) = 500 + (n-1) . (-10)

a(n) = 500 -10n + 10

a(n) = 510 - 10n

The series is the summation notation from n=1 to n = 50

$=\sum\limits^{50}_{n=1} {a(n)}$

$=\sum\limits^{50}_{n=1} {(510-10n)}$

$=\sum\limits^{50}_{n=1} {510} -\sum\limits^{50}_{n=1} {10n}$

$=510\times50-10\sum\limits^{50}_{n=1} {n}$

$=25500-10\sum\limits^{50}_{n=1} {n}$

Learn more about summation notation of a series here:

brainly.com/question/23742399

#SPJ4

7 0

1 year ago