What does -1/5 (-2 1/4) equal?

Answer:

please dont blame me if i get this wrong this is what i put.

Step-by-step explanation:

Using the following 3 equations, answer the questions:

11x + y =4, x+y = -2, x - 2y = 18

How can you determine which equations can be graphed more easily using x- and y-intercepts, rewriting in slope-intercept form, or using a table of values?

you can determin which is eiser to graph by wether or not they have numbers infront of the x and y intercepts.  i find it mutch eiser if they allready have the numbers there. its also eiser to graph 11x + y =4 and x - 2y =18 on a slope intercept rather than table of values because you allready can find the points for those two eiser than the last one which would be used on the table of values.  for the problem x+y=-2 you would use x and y intercepts. for 11x+y=4, rewriting in slope form is the corect method to use. and finaly use the table of values method for x-2y=18.

Which method works best for you personally? When does it not work as well?

the one that i find works best for me personally is probably gonna be the slope intercept method as apposed to many other methods. it doesnt work all the time because nothing can but normaly when i have a problem with this method i can just go to the table of values method and get the answer. (sorry if this is wrong this is what im putting for my answer. dont copy and paste this though if u do desiede to use it, read it and turn it into your own words so its not obvious you found the answer on the internet. and tbh i didnt read the lesson i just am ok at comming up with answers useing the question and getting away with it. )

I'll do the first problem to get you started.

In place of [tex]\sin^{-1}[/tex] I'll use arcsine

So [tex]\sin^{-1}(x) = \arcsin(x)[/tex]

-------------------------------------------------

Using that hint given, we can get the following

cos(arcsin(3x) - pi)

cos(arcsin(3x))*cos(pi) + sin(arcsin(3x))*sin(pi)

cos(arcsin(3x))*(-1) + sin(arcsin(3x))*(0)

-cos(arcsin(3x)) + 0

-cos(arcsin(3x))

Now the question is how to evaluate the cosine of an inverse trig function, especially when it's not inverse cosine.

The trick (often with many trig and geometry problems) is to draw out a triangle. Specifically we'll need a right triangle.

Check out the diagram below. I've drawn out a right triangle with reference angle theta, opposite leg of length 3x, and hypotenuse 1.

Note how sin(theta) = opposite/hypotenuse = 3x/1 = 3x

We can then go from sin(theta) = 3x to theta = arcsin(3x)

This ultimately means

cos(arcsin(3x)) = cos(theta)

cos(arcsin(3x)) = adjacent/hypotenuse

cos(arcsin(3x)) = sqrt(1-9x^2)/1

cos(arcsin(3x)) = sqrt(1-9x^2)

The sqrt(1-9x^2) is the result of using the pythagorean theorem.

---------------------------

So that means the final answer is [tex]-\sqrt{1-9x^2}[/tex]

Answer:

[tex]x \geqslant 4[/tex]

The expression above means x can be any number starting from 4 and above .

Answer:

in one year you will have total $63.60

Answer:

c. 63.60

Step-by-step explanation:

60(7%)=3.60=63.60

Answer:

I can barely believe my answer but

they are the same (112)

Step-by-step explanation:'

I am attaching a picture of my work. It's cross multiplying

someone, please (calmly) tell me if I'm wrong and I will try to fix it.

Answer:

Each would equal 10 lbs.

Step-by-step explanation:

60 pounds all together is the weight of 6 boxes, so if you divide 60 by 6, you'll get 10 lbs for each box.

Answer:

each box weighs 10lbs

Step by Step explanation:

if you do 10 20 30 40 50 60 70.... you will see what times what gives you 60 which in this case it is what times 6 gives you 60 so if you list your 6s you will will go until you  get to 6*10 which is 60 but you can do a list of your 10s it is easier that away to be honest. I hope this answer helps you:)

9514 1404 393

Answer:

  5.  4√2 N

  6. 20 N

Step-by-step explanation:

We're not sure how your diagram relates to the notion of the weight being "pushed". Usually T represents "tension," which would indicate a "pull" in up and to the right.

__

5. The side ratios in this triangle match exactly those in your problem 1. T is √2 times the equal side lengths, so is T = 4√2 N.

__

6. The sides ratios in the triangle match exactly those in your problem 2. T is 2 times the shorter side length, so is T = 20 N.

Answer:

Step-by-step explanation:

3/3 times -5 which is 3/-15 which is -0.2

Answer:

-1/5

Step-by-step explanation:

a/3b

substitute the values of 3 where a is and -5 where b is

=3/(3*-5)

=3 / -15

= -1/5

Answer:

Step-by-step explanation:

Given the population of insects in t months after being transported to be p(t)=50(1+0.05t)/2+0.01t., to get the insect population as time progresses, we will substitute t = infinity into the equation

p(infty) = 50(1+0.05(infty))/2+0.01(infty)

P(infty) = 50(1+infty)/infty

P(infty) = infty/infty (Ind)

Apply l'hopital rule

P'(t) = 50(0.05)+0/0.01

P'(t) = 2.5/0.01

P'(t) = 250

Hence the limiting factor on the insect population as time progresses is 250 populations

The factors that affect the population of the rare species of the mosquito are what are referred to as the limiting factors.

There are several limiting factors that affect population growth of the mosquitoes; some of them are:

As time progresses, the amount of mosquitoes may or may not increase.

This in other words means that, a limiting factor is anything that slows down or stops the population size of the mosquitoes

Read more about limiting factors at:

https://brainly.com/question/23358549

17. you can find the median by putting all of the numbers in order from largest to smaller and find the one in th middle the answer is 17

Answer:

8

Step-by-step explanation:

8x3=24

minus 15 is 9

half of 8 is 4

plus 5 is 9

therefore, the answer is 9.

Answer:

x = 11.8639

Step-by-step explanation:

cos∅ = adjacent / hypotenuse

Since we are dealing with right triangles, we can use trig to help solve for missing values:

cos22° = 11/x

xcos22° = 11

x = 11/cos22°

x = 11.8639

Answer :

Let the first term of both the terms be [tex]\: \sf \: x _1 \: \: \& \: \: x _2[/tex] and last term be [tex]\: \sf \: y _1 \: \: \& \: \: y_2\\ [/tex]

Now, by using the mid point formula to find the mid point of the segment -

[tex] \\ \sf \bigg( \frac{x_1 + x_2}{2} , \: \frac{y_1 + y_2}{2} \bigg) \\ [/tex]

Now, by substituting the values of both x and y -

[tex] \\ \sf \bigg( \frac{ - 7 + 6}{2} , \: \frac{ - 9 + 3}{2} \bigg) \\ [/tex]

Adding -7 and 6 -

[tex] \\ \sf \bigg( \frac{ - 1}{2} , \frac{ - 9 + 3}{2} \bigg) \\ [/tex]

Now, move the negative in front of the fraction -

[tex] \\ \sf \bigg( \frac{ - 1}{2} , \frac{ - 6}{2} \bigg) \\ \\ \\ \sf \bigg( \frac{ - 1}{2} , - 3\bigg) \\ [/tex]

Answer:

Freind

Step-by-step explanation:

Ima go tell my smarter friend to see if he will help

Answer: y=3x-9

Step-by-step explanation: To solve this, you'd first have to substitute 5,6 into an equation (you know that slope in standard form is y=mx+b, where m is slope and b is figure 0, or the y intercept), you have an x and a y. Then solve.

y=mx+b  (y=6, m=3, and x=5)

6=3(5)+b  --- Substitute values

6=15+b --- Subtract 15 from both sides (solving for b)

6-15=-9

b=-9

Hope this helps; let me know if you need further elaboration, as this is kind of hard to grasp at first.

Sincerely,

Lacia :)

Answer:

x = 5

Step-by-step explanation:

x + 1 = 6. subtract the given numbers

(5) + 1 = 6. find the solution (x)

x = 5

Answer:

x=5

Step-by-step explanation:

hope this helps

Answer:

Step-by-step explanation:

1/10 is literally 1 tenth of something. so 10% of x = 43.95 so 100% of x = 43.95 * 10 so x = 439.5

Answer:

D is the right answer

Step-by-step explanation:

[tex]3.0 {} \times 10^{8} = 6.5 \times 10^{9} \\ = 3.5 \times 10 ^{1} [/tex]

Here's the EXPLANATION !! Pls mark as brainliest...!!

Answer:

3,6,-2

Step-by-step explanation:

a+2a+b = 7

2a^2b = -36

a*2a + ab + 2ab = 0

or, a(2a+3b) = 0

so, b = -2a/3

Solve those and you find 3,6,-2

Answer:

4

Step-by-step explanation:

The plus and minus sign cancel each other out so it becomes 7-3=4

the correct answer is c 4

Answer:

none

Step-by-step explanation:

i checked every answer and none of the had a graph that was even remotely close to what is being shown

Answer:

I believe that it is none of the above, correct me if I am wrong.

Step-by-step explanation:

I went through each equation, none of which matched up.

Answer:

Hope this solution helps you

Answer:

16.75-6.03

1.72+9

6.53+4.19

Step-by-step explanation:

4.19 + 6.53 = 10.72

The expressions that is equal to 10.72 can be calculated as follows

4.2 +6.5 = 10.7

16.75-6.03 = 10.72

1.72 + 9= 10.72

15-4.38= 10.62

6.53 + 4.19= 10.72

Hence the expressions which is equal to 10.72 are

16.75-6.03 , 1.72+9 , 6.53+4.19

Answer:

a/b = a * 1/b

Step-by-step explanation:

a/b = a * 1/b

this looks easy....

But what about

a / (1/b) = a*b

if you see any division, you can always multiply BOTH the numerator AND the denominator by the same amount. That is allowed because that is the same as multiiplying by the number 1.

So multiply by b/b and see what happens.

a / (1/b) = b/b * a / (1/b)

group the numerator AND the denominator

a / (1/b) = (b * a ) / b*(1/b)

a / (1/b) = (b * a ) / b/b

a / (1/b) = (b * a ) / 1

a / (1/b) = (b * a )

a / (1/b) = a*b

It is allowed because you can always multiply any number by 1 and that is because that will not change the original number. The number multiplied by 1 remains the same number.

This notion is very powerful and it can be used to turn any division into a multiplycation, and vice versa.

a / (1/b) = a*b

Answer:

This equation generalizes the patterns seen in part D, where a and b represent real numbers:

(a + bi)(a − bi) = a2 + b2.

Answer:

He would run 4.5 miles in 42 minutes if the rate is the same!

Step-by-step explanation:

Answer: 0.75 divided by 30

Step-by-step explanation:you would divide 0.75 by 30. and you would get 40. there for if you gave the man $30 you would be able to ride 40 miles.

Answer:

x=-6

Step-by-step explanation:

2x+1=-x-5

3x+1=-5

3x=-6

x=-2

Answer:

it's not what the fraction is equal to its asked me which said it would give you the answer and by the way it's 8 / 8

Answer:

I believe it's B,hope this helps! :)