Mathematics question

Answer:

+49=(x+ 7)^2

hope that helped if yes give me brainliest and if no draw my attention by hitting the comment section

Answer:

x^2 + 14x + 49 = (x + 7)^2

Step-by-step explanation:

Answer:

multiply by 25 also.

Step-by-step explanation:

If the scores are multiplied by 25, that means that the mean will also multiply by 25. Since the mean and the scores all increased by 25 times, the standard deviation will increase by 25 times.

If instead, you added 25 (or any other number) to each score, then the standard deviation would not change. The mean and each score will increase by 25, bu the difference between them will not change.

Answer:

2. 122

3. 90 degrees

Step-by-step explanation:

Answer:

Selling price = $2.4

Step-by-step explanation:

Given:

Purchase price = $1.50

Increase in price = 60%

Find:

Selling price

Computation:

Selling price = Purchase price + (Purchase price)(Increase in price)

Selling price = $1.5 + (1.5)(60%)

Selling price = $1.5 + 0.9

Selling price = $2.4

Answer:

75 number of quarters

150 number of nickels

35 number of dimes

Step-by-step explanation:

Let x, y and z be the amount of quarters, nickel and dimes respectively.

​he learns that he has 260 coins, thus;

x + y + z = 260 - - - (1)

Now, we are told that he has twice as many nickels as quarters.

Thus, number of nickels = 2x

y = 2x - - - (2)

From online research, we have the following cost;

1 quarter = $0.25

1 nickel = $0.05

1 dime = $0.1

Total cost is $29.75. Therefore;

0.25x + 0.05y + 0.1z = 29.75 - - - (3)

Put 2x for y in eq (1) and eq (3) to get;

x + 2x + z = 260

3x + z = 260 - - - (eq 4)

0.25x + 0.05(2x) + 0.1z = 29.75

0.25x + 0.10x + 0.1z = 29.75

0.35x + 0.1z = 29.75 - - - (eq 5)

From eq(4), z = 260 - 3x

Thus;

0.35x + 0.1(260 - 3x) = 29.75

0.35x + 26 - 0.3x = 29.75

0.05x = 29.75 - 26

0.05x = 3.75

x = 3.75/0.05

x = 75

So, z = 260 - 3(75)

z = 260 - 225

z = 35

Since y = 2x,

Then,y = 2(75) = 150

Thus,we have;

75 number of quarters

150 number of nickels

35 number of dimes

Answer:

Infinitely many solutions

True for all y values

Step-by-step explanation:

Answer:

? ??

Step-by-step explanation:

You need to try and structure that question? or whatever that is better

Answer: 36 - 100%

43 - x  %

Step-by-step explanation 36 - 100%

43 - x  %

we multiply by cross ->  36 * x = 100 / 43  

we should remove '100%' from new value, because we find only increase.. no new value in percent.

x + 100 = (43 * 100)/36  

x =  4300/36 - 100

x = 119+ 16/36 -100

x = 19 +4/9

Answer:

I cant tell wich graph as all the options arnt present but I hope the picture will help you tell wich graph

Answer: the absolute value is 6.33

Answer:

Step 2: He should have added 3 to, rather than subtracting 3 from, both sides

Step-by-step explanation:

Finished assignment

Answer:

step 2

Step-by-step explanation:

Answer:

c = 149 + 0.02p

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

A and C are the only graphs it could be because they are the only graphs starting with (0, 0)

Graph C does not have (2, 4) on it but Graph A does meaning that the only possible answer is Graph A

Answer:

Yes, ( A )would be the correct answer

Step-by-step explanation:

Took the test.

Answer:

$176,250

Step-by-step explanation:

Multiply $3.75 million by Tomas commission on his total sales. Since you can't multiply a percentage you have to turn the commission into a decimal by moving it two spaces to the left. (Note: If it doesn't have a decimal add one at the end of the number then move it two spaces to the left)

$3,750,000 x .025 or 0.025 = $93,750

Add $93,750 to Tomas yearly salary

$93,750 + $82,500 = $176,250

So

If Tomas sold properties that totaled $3.75 million in sales during one year, his earnings for that year would be $176,250

Answer:

40

112

2n^2 + 2n       C

Step-by-step explanation:

a)The correct formula is 2n^2 + 2n

So for n =4, the answer is

2*4^2 + 2*4

2*16 + 8

32 + 8

40

b) For the seventh answer you get

2 * 7^2 + 2*7

2*49 + 14

98 + 14

112

c) The correct formula to use is

2n^2 + 2n  See diagrams for the number of matchsticks to be used.

n                    2n^2 + 2n

1                    2*1^2 + 2*1

1                    2 + 2

1                    4

2                    2*2^2 + 2*2

2                    2* 4 + 4

2                    8 + 4

2                    12

3                    2*3^2 + 2*3

3                    18 + 6

3                    24

What an extremely interesting sequence. I'll bet not one person in 100 could get this without the match stick diagrams.  I'm sorry I didn't read the question more carefully.

Answer:

y represents the money raised for charity

Step-by-step explanation:

Answer: The area of the triangle is 25 units^2.

Step-by-step explanation: The formula to find the area of the triangle is (base * height)/2. In this case, the base is 10 units long (on the x axis, it's the overall horizontal length of the triangle) and the height is 5 units long (the height can be calculated by finding the y axis length from the highest point of the triangle to the lowest). So (10*5)/2 = 50/2 which equals 25. And keep in mind, because this is the area, the unit will be units squared.

Answer:

B

Step-by-step explanation:

We have the expression:

[tex](3-5i)(-2+4i)[/tex]

Distributive Property:

[tex]=(3-5i)(-2)+(3-5i)(4i)[/tex]

Distribute:

[tex]=(-6+10i)+(12i-20i^2)[/tex]

Simplify:

[tex]=(-6+10i)+(12i-20(-1))[/tex]

Simplify:

[tex]=-6+10i+12i+20[/tex]

Combine like terms:

[tex]=(-6+20)+(10i+12i)[/tex]

Simplify:

[tex]=14+22i[/tex]

Hence, our answer is B.

Answer:

14+22i

Step-by-step explanation:

Answer:

you can alwayd use desmos for graphing

Answer:

I believe it is Isla Hoste in August

Answer: it is Isla Hoste in August

Step-by-step explanation:

i am sure pls give me brainliest

Answer:

A library contains only paperback and hardback books. If the ratio of paperback books to the total number of books is 3 to 5, the true statement is:

The ratio of paperback books to hardback books is 3 to 2.

Step-by-step explanation:

The number of books in the library = 5

The number of paperback books in the library = 3

Therefore, the number of hardback books in the library = 2 (5 - 3)

Then, the relationship between the paperback books and the hardback books in the library can be expressed as a ratio of 3:2.  This still gives the sum of the ratios as 5, which is the total number of books in the library, including paperback and hardback books.

Answer: C.

Explanation: X= -7

Answer:

9.2

Step-by-step explanation:

102/11

i would take him 9.2 months to pay back

Ideally, he will repay the whole amount of $102 in 10 months where he will pay $11 for first 9 months and $3 in the 10th month.

Given information:

Keith borrowed $102 from his dad, and he is paying him back $11 each month.

So, Keith will pay back his dad an amount of $11 every month till the debt is cleared.

Now, the number of months required by Keith to repay will be calculated as,

[tex]\dfrac{102}{11}=9+\dfrac{3}{11}[/tex]

Now, Keith will need [tex]9+\dfrac{3}{11}[/tex] months to completely repay his debt.

Fraction of month is not an option for repayment. So, he will pay $11 regularly for 9 months which will be $99 in the repayment, and the remaining $3 will be paid by him in the 10th month.

Therefore, ideally, he will repay the whole amount of $102 in 10 months where he will pay $11 for first 9 months and $3 in the 10th month.

For more details, refer to the link:

https://brainly.com/question/14937758

Answer:

mee two

Step-by-step explanation:

Answer:

8 9 16 7 hope this helps

Step-by-step explanation:

I'm not to good with math lol

Answer:

9

Step-by-step explanation:

I believe this is missing part of the equation. But if you are looking for the value of f(x)=3^2x+1 when x=1/2, this is the answer you are looking for.

You will have to substitute the given value into the function and evaluate.