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3 years ago

8

How to find x in a quadrilateral

1 answer:

evablogger [386]3 years ago

6 0

X = 360 - (122+58+58)
x = 360 - 238
x = 122

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Find all solutions in the interval [0, 2π). tan x + sec x = 1

svp [43]

Use the identity
sec^2x = 1 + tan^2 x
- so sec x = sqrt(1 + tan^2 x) then:-
tan x + sqrt( 1 + tan^2 x) = 1
sqrt ( 1 + tan^2 x) = 1 - tan x
1 + tan^2 x = 1 + tan^2x - 2 tan x
0 = -2 tanx

tan x = 0

x = 0, π
π is an extraneous root because sec 180 = -1
So the answer is 0 degrees

6 0

3 years ago

A straight line

Nuetrik [128]

Answer:

y=4x+c

23=4(5) +c

23=20+c

23-20=c

3=c

y=4x+3

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What annual rate of interest is required to triple an investment in 7 years if it were compounded quarterly?

Jobisdone [24]

Answer:

Option C) 16.01%

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=7\ years\\P=\$x\\A=\$3x\\n=4$

substitute in the formula above

$3x=x(1+\frac{r}{4})^{4*7}$

$3=(1+\frac{r}{4})^{28}$

Apply log both sides

elevated both sides to 1/28

$\sqrt[28]{3}=(1+\frac{r}{4})$

Multiply by 4 both sides to remove fraction

$4\sqrt[28]{3}=4+r$

subtract 4 both sides

$r=4\sqrt[28]{3}-4$

$r=0.1601$

convert to percentage

$r=0.1601*100=16.01\%$

4 0

3 years ago

Helpppppp I forgot

ivann1987 [24]

30
multiply 3.0 times 10

3 0

3 years ago

Graph 2 + 3y = 6. Please hurry

vitfil [10]

Answer:

Step-by-step explanation:

5 0

3 years ago