Is (4,12) a solution to 2x+y=40

Answers

Answer 1
No.

2x + y = 40
2x = 40
x = 40/2
x = 20

1y = 40
x = 40/1
x = 40

The right solution is (20,40)

Related Questions

-1, -2, -4, -8….
What is the 8th term for this geometric sequence!

Answers

-4....................just took the quiz..........

Answer:

-128

Step-by-step explanation:

-1, -2, -4, -8, -16, -32, -64, -128

you are multiplying the previous number in the sequence by 2

hope this helped :)

Plot all points that are a distance of 7 units from 4. What are their values?

Answers

Distance is the number of units between points.

The distance that are 7 units from 4 are: 11 and -3

A distance of 7 units from 4 means:

[tex]x - 7 = 4[/tex]  or [tex]x + 7 =4[/tex]

Where:

x is the required distance

Solve for x in both equations.

[tex]x - 7 = 4[/tex]

[tex]x = 7 + 4[/tex]

[tex]x = 11[/tex]

[tex]x + 7 =4[/tex]

[tex]x =4 - 7[/tex]

[tex]x =- 3[/tex]

So, the distance that are 7 units from 4 are: 11 and -3

See attachment for illustration

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Evaluate -c when c = 12

Answers

Answer: [tex]-12[/tex]

Step-by-step explanation:

[tex]-c=-(12)=\boxed{-12}[/tex]

A student has scores of 66.75, 66, and 72.25 on his first three tests. He needs an average of at least 70 to earn a grade of C. What is the minimum score that the student needs on the fourth test to ensure a C?

Answers

The answer is 7.25

Step-by-step explanation:

You need to just subtract thr toher numbers to get a differrnce. Then add up all of the differences so that you get thr correct answer.

Model and Solve the problem.
5x1/2 Please hurry!!

Answers

2.5

please make me brainiest if helped!

Answer:

2.5

Step-by-step explanation:

i just did 5 times 0.5 hope this helped.

and 2.5 is greater then 2.05

Shaniqua is taking a test. After 20 minutes she has 35 questions left. After 40 minutes she has 15 questions left. If Shaniqua takes the same amount of time for each question how many questions are on the test

Answers

There were 55 questions in the test.

Answer:

55

Step-by-step explanation:

20pens cost #300 and 50pens cost #750
(a)is the cost of pens directly proportional to the number of pens?​

Answers

Answer:

669

Step-by-step explanation:

Look at the pictuse below i would copy and paste but I can't copy a picture

Answers

Answer:

15

Step-by-step explanation:

The constant of proportionality is 15 books per shelf.

If you look at the graph, you can see that for every 1 shelf, there are 15 books. For 1 shelf, there are 15 books, and for 2 shelves, there are 30. And the pattern continues.

Let me know if you have any questions, thanks!

Suppose the sum of two integers is negative. Must both be negative

Answers

No, because -5+3=-2 This is the same as 3-5=-2.

Answer: Not necessarily. There are many ways to write a basic equation with a negative answer. For example, -3-4 = -7.

Step-by-step explanation:

which expression is equivalent to -8m-8+3m-6?
-11m-2 -5m-2
-5m-14 or -16m-3

I need help!!!!

Answers

Poop fart and YAZ girl periODT
The answer is -5m-14

Find the perimeter of the triangle whose vertices are (−4,4), (−4,1), and (−8,−4). Write the exact answer. Do not round.

Answers

Answer:

Step-by-step explanation:

The perimeter of the triangle is [tex]3 + \sqrt{41} + 5\sqrt{5}[/tex] units

How to determine the perimeter?

The coordinates are given as:

(−4,4), (−4,1), and (−8,−4).

Calculate the distance between the vertices using:

[tex]d = \sqrt{(x_2 -x_1)^2 + (y_2 -y_1)^2[/tex]

So, we have:

[tex]AB = \sqrt{(-4 + 4)^2 + (4-1)^2} = 3[/tex]

[tex]BC = \sqrt{(-4 + 8)^2 + (1+4)^2} = \sqrt{41[/tex]

[tex]AC = \sqrt{(-4 + 8)^2 + (4+4)^2} = \sqrt{80[/tex]

The perimeter is the sum of the side lengths.

So, we have:

[tex]P = 3 + \sqrt{41} + \sqrt{80}[/tex]

Expand

[tex]P = 3 + \sqrt{41} + 4\sqrt{5}[/tex]

Hence, the perimeter of the triangle is [tex]3 + \sqrt{41} + 5\sqrt{5}[/tex] units

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what is the decimal of 3/8

Answers

Answer:

3/4 in decimal form= 0.375

have a nice day <3

given:

[tex] \frac{3}{8} [/tex]

to find:

the decimal form

solution:

to convert to decimal just divide the numerator by the denominator.

[tex] \frac{3}{8} [/tex]

[tex] = 0.375[/tex]

[tex]1sf = 0.4[/tex]

Determine the value of x.
X 1
X 1.5

A)x=1
B)x=2.5
C)x=2
D)x=2.9​

Answers

Answer:

The correct option is C. (x=2)

Step-by-step explanation:

Given

Length of the hypotenuse of the right angled triangle (h) = 2.5 cm

Length of one of the side (a) = 1.5 cm

Let the length third side be 'b' cm

By Pythagoras theorem

h² = a² + b²

Adding Values on both sides

⇒ (2.5)² = (1.5)² + b²

⇒ 6.25 = 2.25 + b²

⇒ 6.25 - 2.25 = b²

⇒ 4 = b²

⇒ √4 = b

⇒ 2 = b

b = 2

Trigonometry prove that LHS=RHS​

Answers

Answer:

bc cot 0

Step-by-step explanation:

You owe $1,753.42 on a credit card with a limit of $3,000.00 at a rate of 15.5% APR. You pay $400.00 the first 2 months and then
$200.00 until the bill is paid off. You pay the bill on the due date each month.
1) Complete the table showing the decreasing debt.
2) How much is your last payment?
3) What is the total amount paid by the time you pay off the credit card?
4) What was your debt ratio at the beginning?
Be sure to include in your response:
All parts of the table are complete and calculations correct
The answers to the additional questions
Month
Principal
Interest
accrued
Payment (on
due date)
End-of-
month
balance

Answers

9514 1404 393

Answer:

see attached$33.97$1833.970.584

Step-by-step explanation:

1. We cannot be sure of your table headings, so we used ones that seem to fit. The completed table is attached.

The amount of interest is computed first. It is the product of the previous balance and the monthly interest rate: 0.155/12. This amount is rounded to cents, as it would be in real life.

The remainder of the payment after interest is paid goes to reduction of the principal amount owed. That payment to principal is subtracted from the previous EOM Balance to give the new end-of-month balance.

The total of payments to date is found in the Accrued Pmt column.

__

2. For the last payment, we made note of the interest owed and the outstanding balance, and added those values to get the payment amount. The result is the final balance is zero. The last payment is $33.97.

__

3. The total of all payments is $1833.97.

__

4. The "debt ratio" is presumed to mean the ratio of the credit card balance to the credit card limit. That ratio is ...

  1753.42/3000 ≈ 0.584 . . . . "debt ratio"

_____

Additional comment

Various definitions of "debt ratio" are used by different folks for different purposes. Sometimes, it means the ratio of debt to income. Sometimes it means the ratio of minimum payments due to income. Here, we're not given any income information, so we presume the ratio is supposed to mean the fraction of credit limit that is being utilized.

8.9776 to nearest hundredth

Answers

Answer:

8.9770

Step-by-step explanation:

if sn = 1395 a = 3 and d = 3 find and =?​

Answers

Answer:

Simplify:=-1

Step-by-step explanation:

HELP! Which expression is equivalent to a^b/c

Answers

Answer:

[tex]{ \rm{ {a}^{ \frac{b}{c} } \: \dashrightarrow \: ( {a}^{b}) {}^{ \frac{1}{c} } }} \\ \\ { \boxed{ \rm{ \boxed{} \: \: \sqrt[c]{ {a}^{b} } }}} \\ [/tex]

You would like to start a club for psychology majors on campus, and you are interested to find out what proportion of psychology majors would join. The dues would be $35 and used to pay for speakers to come to campus. You ask five psychology majors from your senior psychology honors seminar whether they would be interested in joining this club and find that four of the five students questioned are interested. Is this sampling method biased, and if so, what is the likely direction of bias

Answers

From the sample used to find out what psychology majors would join the club and if it is biased, we can say that;

- Yes, the sampling method is biased.

- The likely direction of the bias is because you only asked 5 people which

is  not a significant percentage of those offering psychology majors and as

such the 4 out of 5 gotten is likely going to be an over estimation of those

who are willing to pay to join this club.

We are told that;

You want to start a club.This club is for psychology majors.You want to find the proportion of those in the psychology majors that will join this club you want to organize.

Now, out of all the students offering psychology majors, you only asked 5 of them if they will be interested. Since 4 out of the 5 are interested and you want to use that to form a basis of the proportion of those interested , it would lead to sampling bias since the population is not adequately represented.

Therefore, this would lead to sampling bias and thus the sample is biased.

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Dan and Brian have played 51 tennis matches.
Dan has won 29 times.
Brian won the rest.
a) Estimate the probability that Dan wins.
b) Estimate the probability that Brian wins.

Answers

Answer:

A = 29/51   B = 22/51

Step-by-step explanation:

(E) =  number of favorable outcomes/ total number of possible outcomes

- number of possible outcomes= 51

- number of favorable outcomes= 29

therefore, P(E) = 29/51

- number of possible outcomes= 51

- number of favourable outcomes = 51 - 29 = 22

therefore, P(E)= 22/51

A loan is payed off in 15 years with a total of 250,000. It had 4% interest

Answers

Answer:

5.2%po joke Lang Hahahahahahah

Answer:

$137,339.88

Step-by-step explanation:

Use the compound interest formula and substitute the values given:

$250,000=P(1+0.0412)12(15)

Simplify using order of operations:

$250,000=P(301/300)180

Solve for P:

P=$250,000(301/300)180≈$137,339.88

Find the area of the triangle.
6
8

Answers

Answer:

24

Step-by-step explanation:

the area formula for a triangle is

base x high

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

   2

so 6x8=48 and divided by 2 is 24

Answer:

24

Step-by-step explanation:

8×6 then Divide by 2........

What is 11,885 as a percentage (round to 2 decimal places X.XX)?

Answers

Answer:

9.25

Step-by-step explanation:


When x = 2, 10+ 3(12= (3x)) = ?
A. 12
B. 16
C. 26
D.34
E. 104

Answers

Answer: E

Step-by-step explanation:

25 POINTS HELP ME ASAP

Answers

Answer:

$14

Step-by-step explanation:

the cost for 2 shirts, prior to the discount, is $140

60% of 140 is 84

therefore, reduce 140 by 84 to get 56

you pay 70-56 more to get 1 shirt, or $14

given that x is an acute angle and cos x equals to 2 root 5/5 find without using mathematical tables or a calculator tan (90 - x)​

Answers

Answer:

whats cos? i dont understand if its written in question please explain

Step-by-step explanation:

A piece of wire 3/7 m long as we cut into six pieces of the same length what is the length of each piece

Answers

Answer:

Each piece is 1/7 m long

Step-by-step explanation:

Wire length = 3/7 m

Pieces = 6

1 piece = 3/7 ÷ 6

= 3/7 ÷ 6/1

= 3/7 × 1/6

= 1/7 m

7 divided by $15.02. Round it by the nearest cent. QUICK!!

Answers

The answer would be 7/15.02= approximately 0.47

What is the product of -4.6 and 3.2?

Steps to get there would be helpful too!

Answers

Answer:-14.72

Step-by-step explanation:

Answer:

The answer is negative 14.72

Step-by-step explanation:

this is because if you multiply negative 4.6 and 3.2

Nikita bought a flat for rupees 4987653. Round off the price of the flat to the nearest thousands. ​

Answers

If you round to the nearest thousands then it would be 4988000.
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