Khan academy question

Khan Academy Question

Answers

Answer 1

Answer:

56.25

Step-by-step explanation:

cos-1(5/9)

cos the angle=adjacent ÷hypotynous


Related Questions

Hannah buys ice cream and onions at the store

She pays a total of 35.16

She pays a total of 4.44 for the ice cream

She buys 6 bags of onions that each cost the same amount

Write and solve an equation which can be used to determine x, how much each bag of onions costs

Answers

Answer:

x=5.12

Step-by-step explanation:

35.16= 4.44+6x

30.72=6x

5.12=x

x=5.12

Hope this helps :)

What's true about a regular polygon?

Answers

Answer:

Both the angles and sides are congruent.

Answer:

B

Step-by-step explanation:

I think

Please help me with these please i give brainliest.

Answers

Answer:

the answer is x<4

and the line is an open circle line going to the left from positive 4 onward

The measure of one angle is 130. Which statement is true regarding the 130 angle and angle 3?

Answers

Answer: The measure of one angle is 130°. Which statement is true regarding the 130° angle and angle 3? They are same-side interior angles, so angle 3 measures 50°. They are alternate interior angles, so angle 3 also measures 130°.

Step-by-step explanation:

answer:

the answer is b

The cost of chartering a bus for the great america trip was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost of chartering the bus? Please answer me with an explanation

Answers

Answer:

20c= 30(c-9)

Step-by-step explanation:

The first step in solving a word problem is always to organize the information you have, and put it into equations to solve.

Let c be the cost per student originally.

The cost of the bus has not changed, so the cost/student * the number of students has not changed:

help please quick!!!

Answers

Answer:

9,000 is the answer you are looking for

An amusement park sold an average of 280 tickets in 4 hours. If this rate continues, how many tickets will they sell in 7 hours? *

Answers

Answer:490 tickets in 7 hoursStep-by-step explanation:

280 tickets per 4 hours

We need to find out how many tickets they made per hour.

So: 280/40

=70 tickets

70 tickets per hour

We then need to find how many ticket they made in 7 hours.

So: 70 x 7

=490 tickets

Answer:

490

Divide 280 by 4 to get average of 70 tickets an hour.

Multiple 70 X 7= 490

HURRY HELP i need helppp

Answers

Answer:

that answe is b

Step-by-step explanation:

b because i took this test

I think it is b.........

Please help what is I need it for school 4/5 + 3/7 x 2

Answers

the answer for it is 58/35

Answer:

[tex]\frac{58}{35}[/tex] is the answer.

Step-by-step explanation:

1) Use this rule: [tex]\frac{a}{b} * c = \frac{ac}{b}[/tex]

[tex]\frac{4}{5} + \frac{3*2}{7}[/tex]

2) Simplify 3 * 2 to 6.

[tex]\frac{4}{5} + \frac{6}{7}[/tex]

3) Simplify.

[tex]\frac{58}{35}[/tex]

Therefor, the answer is 58/35 and if you need it on decimal form it would be, 1.657143.

the directions say, determine whether the triangles are similar by AA, SSS, SAS, or not similar if the triangles are similar write a valid similarity stating why (9, 10, 11, 12, 14, 15)​

Answers

Answer:

9) ASA

10) SAS

11) SAS

12) SAS

13) not similar

14) AA

15) not similar

Step-by-step explanation:

HELP PLEASE OMGGGGGGGGGGGGG

Answers

Answer:

7x-2+5x-10+4x=180°

16x-12=180

16x=192

x=192/16

x=12

ABC
A rectangular prism has a volume of 990 feet cubed, a width of 9 feet, and a height of 10 feet. What is the measure of the length of the
prism

Answers

I’m pretty sure the answer would be 11 because if 9×10xa(or whatever letter you use) equals 990 then a=11. Hope this helps!

regan's website had 7 links on each of 9 pages. how many links did she have on her website? i need equation and solution!!

Answers

Answer:

63

Step-by-step explanation:

all you need to do is 9*7

a
.
b.
2.
L
37°
B
LABD =
LHFG =
d.

Answers

What in the hell is this

Please help


what is 2 x 1 1/2

Answers

Answer:

3

Step-by-step explanation:

2 times 1 is 2 and then multiply 1/2 by 2 and you'll get 1 then add those two numbers together and you will get 3.  Note: The best way to do these types of things in multiplication is to split the numbers up among the decimal places so if you did 15 times 4 then an easy way to do it would be to split the 15 with 10 and 5 so then multiply the 10 by 4 and you get 40 now do the same to the 5 and you get 20 so now add those two numbers together and you get 60(This has nothing to do with the answer i just want to help make it easier for future problems such as this).

Answer:

3

Step-by-step explanation:

[Given]

2 * [tex]1\frac{1}{2}[/tex]

[Make improper fractions and solve by multiplying across]

[tex]\frac{2}{1}*\frac{3}{2} =\frac{6}{2}=3[/tex]

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

YO SOMEBODY HELP PLS IM STUCK

Answers

Answer:

X is less than or equal to -3

Hope that answers your question

The cost for 15 cases of oranges is $75. What is the cost for 1 case? *

Answers

Answer:Ok I This question can be solved using a system of equation, which requires translating the above word problem into something that can be algebraically

Let O=oranges and  Let G=Grapefruit

5O +8G=235

3O + 2G=85

To solve, you must isolate one of the variables and then work from there. To do that multiply both sides of the bottom or second equation by four and then subtract the bottom equation from the top.

Which would look like this

5O +8G=235

12O + 8G= 340

Then subtract the bottom from the top to get this

-7O=-105

Solving for O we divide both sides by -7, and end up with O=15

Plugging that value back into one of our original equations to solve for G we get this

3(15) + 2G= 85

45 +2G=85

2G=40

G=20

So 1 case of each altogether would equal 15+20, or $35.

Hope this helps have a awesome night/day❤️✨

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

PLEASE HELP QUIKLY THIS IS DUE TODAY I WILL GIVE U POINTS THE PICTURE TO THE PROBLEM IS BELOW!!!! Ms. Jackson wrote a question on the board. Then she collected student responses to the question and recorded them in a tally chart. What question could she have asked? Is there more than one possible response to the question? Explain

Answers

Answer:

Critical-thinking skills and knowledge of enviromental regulations, 71 A or -15/2

Step-by-step explanation:

HELP FOR 20 POINTSSS


x =3 ; y=8.4

x = 3 ; y = 15

x = 6 ; y =7.5

x = 6; y =18

Answers

Answer:

The first one.

Step-by-step explanation:

solving for x:

5/2 = 7.5/x

cross multiply

2 ×7.5 =5x

x= 2×7.5/5

x= 3

solving for y:

values of the small triangle over the bigger triangle-

5/6 =7/y

cross multiply and solve for y

y= 8.4

therefore (x= 3; y= 8.4)

YOU ARE VERY WELCOME!

Please help asap will mark brainliest if right #32 points!

Answers

1a.) -5.36

Franco is requesting a group of negative numbers, so in this case, -5.36 is negative and would fall under that category.

1b.) 4.6272727

Mai is requesting the group to have repeating decimals, in this case, 4.62727 would work.

Angle P and angle Q make a
90° angle.
Angle P = 62°
Angle Q = 4x
What is the value of x?

Answers

sorry i really don’t know i just need to answer some questions so i can put up a question but 62 is the value of c

Hope this helps

Substitute the values of angles P and Q in an equation that equals 90 degrees

62° + 4x = 90°

Then isolate the variable by first subtracting 62 from both sides

62 + 4x = 90           →    4x = 28

-62           -62

Then divide both sides by 4

4x = 28               →  x = 7

/4    /4  

Giorgio fenced off an area for a vegetable garden.
1
2
He made the garden 9 feet long and 8 feet wide.
2
3
What is the area of the vegetable garden?

Answers

Answer: The area is 72ft.

A bag holds 4 red marbles, 3 green marbles, 2 yellow marbles, and 1 blue marble. You pull one out without looking. What is the probability that you pull a marble that is not green?

Answers

Answer:

the probability of pulling a marble that is not green is 7/10

Answer:

- 7 / 10

- 70%

Step-by-step explanation:

4 red + 3 green + 2 yellow + 1 blue = 10 marbles

If you remove green marbles:

4 red + 2 yellow + 1 blue = 7 marbles

So the probability of not pulling a green marble is 7 out of 10.

What happens to the inequality sign when you multiply or divide by a negative
number?

Answers

Answer:

Much like when you divide by a negative number, the sign of the inequality must flip! ... When you multiply both sides by a negative value you make the side that is greater have a "bigger" negative number, which actually means it is now less than the other side!

Step-by-step explanation:

Answer:

It switches sides

Step-by-step explanation:

Example 2<4, 2<4(-2)=2<-8




Find the volume of the triangular prism in the picture shown. Round your answer to the
nearest tenth. *

1: 167
2:77.3 yd
3: 77 yd²

Answers

Given:

A figure of a triangular prism.

Height of triangular base = [tex]9\dfrac{2}{3}[/tex] yd

Base of triangular base = 4 yd

Height of prism = 4 yd.

To find:

The volume of the triangular prism.

Solution:

Volume of a triangular prism is:

[tex]V=Bh[/tex]              ...(i)

Where, B is the area of triangular base and h is the height of the prism.

Area of triangular base is:

[tex]B=\dfrac{1}{2}\times base\times height[/tex]

[tex]B=\dfrac{1}{2}\times 4\times 9\dfrac{2}{3}[/tex]

[tex]B=2\times \dfrac{29}{3}[/tex]

[tex]B=\dfrac{58}{3}[/tex]

Putting [tex]B=\dfrac{58}{3}[/tex] and h=4 in (i), we get

[tex]V=\dfrac{58}{3}\times 4[/tex]

[tex]V=\dfrac{232}{3}[/tex]

[tex]V=77.33...[/tex]

[tex]V\approx 77.3[/tex]

The volume of the triangular prism is 77.3 cubic yards. Therefore, the correct option is 2.

Muchii unui cub are lungimea de 16cm.Care este perimetrul unei freţe a cubului? va rog rapid dau coroana

Answers

Răspuns:

64 cm

Explicație pas cu pas:

Perimetrul fiecărei margini a unui cub:

4 * lungime laterală

Lungime laterală = 16cm

Prin urmare, perimetrul va fi:

4 * 16cm

= 64cm

HELP QUICK PLEASEEEEEEE

Answers

the answer should be B

Which of the following choices is the definition for a "variable"? *

Answers

Answer:

a symbol, usually a letter, used to represent a number in mathematical expressions or sentences

Step-by-step explanation:

Hope it helps

Answer:

4) choice 2, "a symbol, usually ......."

5) choice 1, "one variable equals ...."

Step-by-step explanation:

a term is either a single number or variable, or the product of several numbers or variables.

Work out the size of angle x.
105°
to

Answers

Answer:

105

Step-by-step explanation:

cuz it is corresponding angle

please help i don’t understand

Answers

Step-by-step explanation:

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