HELP PLEASEEE!! THIS IS HARD

Solution given:

[tex] \sin( \alpha ) = \frac{\sqrt{5} }{3}[/tex]

so

P=√5

h=3

b=[tex] \sqrt{3 {}^{2} - \sqrt{5} {}^{2} } [/tex]

b=2

so

[tex] \cos( \alpha ) = \frac{b}{h} = \frac{2}{3} [/tex]

Note

[tex] \alpha = 0[/tex]

b:⅔

Perpendicular=√5

Hypotenuse=3

Base

CosØ

Answer:

C. make purchases

Step-by-step explanation:

took the test

Answer:

-9 + 4i

Step-by-step explanation:

The additive inverse ("opposite") of a complex number a + bi  is  -a - bi.

Just use the opposites of  a  and  b.

Answer:

C. 72

Step-by-step explanation:

I calculated it logically

Answer:

Didn't post the picture

Step-by-step explanation:

Answer:

1140 liters.

Step-by-step explanation:

We need 40% to top it up.

60 % = 1710

1%    = 1710 / 60

40% = (1710/60) * 40

= 1140 liters.

Answer:

a) The margin of error for the interval is of 11.35.

b) The 98% confidence interval estimate for the population mean using the Student's t-distribution is between 298.65 and 321.35 millimeters.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.98}{2} = 0.99[/tex]. So we have T = 2.539

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 2.539\frac{20}{\sqrt{20}} = 11.35[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

Thus, the margin of error for the interval is of 11.35.

The lower end of the interval is the sample mean subtracted by M. So it is 310 - 11.35 = 298.65 millimeters.

The upper end of the interval is the sample mean added to M. So it is 310 + 11.35 = 321.35 millimeters.

The 98% confidence interval estimate for the population mean using the Student's t-distribution is between 298.65 and 321.35 millimeters.

Answer: [tex]3x^{-2.5}[/tex]

Step-by-step explanation:

Given

Expression is

[tex]\dfrac{12\sqrt{x}}{4x^3}[/tex]

Using exponent property [tex]x^a\cdot x^b=x^{a+b}[/tex]

Writing expression in the form of [tex]k\cdot x^n[/tex]

[tex]\Rightarrow \dfrac{12\sqrt{x}}{4x^3}=\dfrac{3\times 4}{4}\times \dfrac{x^{0.5}}{x^3}\\\\\Rightarrow \dfrac{3\times 4}{4}\times x^{0.5-3}\\\\\Rightarrow 3x^{-2.5}[/tex]

70 =

219.91 =

(That's what math.way told me)

Answer: 1,000

Step-by-step explanation: if you multiply the 900 in 157,900 by a 1,000 you get the 900,000 in 901,532.

Answer:

0.3 liters each student

Step-by-step explanation:

3 liters = 3.000 ml so 3.000(ml) : 10(students) =300 ml which is 0.3 liters

Answer: the answer is  80

Step-by-step explanation: How i got this answer is i followed the PEMDAS order (parenthesis, exponent, multiplication, division, addition, subtraction)

So according to the order, i had to do the parenthesis first, (4+3.50+6+2.50)

(( what i did was i just broke the problems into 2 so it would be much more easier))   (4 + 3.50  = 7.5)   and the next  (6 + 2.50 = 8.5) Then you would add those numbers together (7.5 + 8.5 = 16)  

We can see that we still have the 5 left over, so now all you gotta do is just multiply now. (16 x 5 = 80)

So the answer u r left off with is 80.

~hope this has helped you out, have  a gr8 day/night my friend!~

Answer:

16n + 7

Step-by-step explanation:

Answer:

7 + 16n

Step-by-step explanation:

The use of more than indicates addition.

Answer:

78.5 ft²

Step-by-step explanation:

In this situation, the dog's 5 ft leash is the radius of the circle that he forms.

So, the radius is 5.

Use the area formula, A = [tex]\pi[/tex]r². Plug in 5 as r, and 3.14 as [tex]\pi[/tex]

A = [tex]\pi[/tex]r²

A = (3.14)(5²)

A = (3.14)(25)

A = 78.5

So, the area of the grass he can cover is 78.5 ft²

Answer:

It's D

Step-by-step explanation:

since kelly bought three tickets, you divide by three to find the cost of each individual ticket

Step-by-step explanation:

A 106 offered history to students

Answer:

a = 3/4.

Step-by-step explanation:

2a/3 - 1/6 = 1/3

Multiply thru by the LCD 6:

4a - 1 = 2

4a = 3

a = 3/4.

Answer:

120 degrees

Step-by-step explanation:

beacuse this is

Answer:

tan 0 = -2.4

sin 0 = 0.3846

Step-by-step explanation:

sec 0 = -13/12, and cot 0 < 0

the angle 0 is in quadrant II

sec 0 = -13/12 = cos 0 = -12/13 = x/r

=> y = √13²-12²=√169-144=√25=5

so,

tan 0 = y/x = -12/5 = -2.4

sin 0 = y/r = 5/13 = 0.3846

Answer:

Solution given;

Sec θ=-[tex]\frac{13}{12}[/tex]

cotθ< 0,

It lies in second quadrant.

where sin and cosec is positive.

Now

[tex] \frac{1}{cosθ}=-\frac{13}{12}[/tex]

cosθ=[tex]\frac{12}{13}[/tex]

[tex]\frac{b}{h}[/tex]=[tex]\frac{12}{13}[/tex]

b=12

h=13

By using Pythagoras law

p=[tex] \sqrt{13²-12²}=5 [/tex]

Now

exact values of tan θ=[tex]\frac{p}{b}[/tex]=[tex]\frac{5}{12}[/tex]

since it lies in II quadrant

tan θ=-[tex]\frac{5}{12}[/tex]

and

sinθ=[tex]\frac{p}{h}[/tex]=[tex]\frac{5}{13}[/tex]

since it lies in II quadrant

sin θ=[tex]\frac{5}{13}[/tex]

Answer:

questions 2 answe is x+3less than equal to 13

Answer:

Explanation:

hope it will helps please heart my answer!

Answer: The sample space S for a probability model is the set of all possible outcomes. For example, suppose there are 5 marbles in a bowl. One is red, one is blue, one is yellow, one is green, and one is purple.

Step-by-step explanation: Hope this helped :)

Answer:

8 apples and 24 strawberries.

Step-by-step explanation:

2 + 6 = 8

32 ÷ 8 = 4

2 apples x 4 = 8 apples

6 strawberries x 4 = 24 strawberries

Answer:

Plot each graph on the same coordinate system.

f(x)=−2

(2)x+4

Step-by-step explanation:

Answer:

y=^3Vx is the domain function

Answer:

The formula for the area of the base of a cylinder is π r²

Answer:

[tex]-9\frac{1}{4}[/tex]

Step-by-step explanation:

[tex]-5\frac{3}{4}-3\frac{1}{2}[/tex]

Step 1: Factor out the common term [tex]-1[/tex]

[tex]=-\left(5\frac{3}{4}+3\frac{1}{2}\right)[/tex]

Step 2: Add the whole numbers

[tex]5 + 3 = 8[/tex]

Step 3: Combine the fractions:

[tex]\frac{3}{4}+\frac{1}{2} = \frac{5}{4}\\\\=-\left(8+\frac{5}{4}\right)[/tex]

Step 4: Convert the improper fractions to mixed numbers

[tex]\frac{5}{4} = 1\frac{1}{4}\\\\=-\left(8+1\frac{1}{4}\right)[/tex]

Step 5: Add the numbers

[tex]8 + 1 =9 \\\\=-9\frac{1}{4}[/tex]

Therefore, the answer to the equation is [tex]-9\frac{1}{4}[/tex] in fraction, and decimal; [tex]9.25[/tex]

Answer:

Step-by-step explanation:

The new equation is  y = a(x - 2h)^2 + k

= y = a(x - ( h + h))^2 + k  so this is like f(x) ----> f(x + h) therefore:

The whole graph will translate h units to the right.