Can someone explain this please ? Like explain how to do it

8+1/82, 882/100 so you get 8 and 1/82

There are a few ways to solve this, the simplest of which is probably factoring. Start by finding factors of C (10) that add up to be B (-2).

fac(10) { -10, 1 ; -5, 2 }

Well, there are no factors of 10 that can add to b - so we will use the quadratic formula.

(-b +- sqrt(b^2 - 4ac)) / 2a

where a = 1, b = -2, c = 10

b^2 - 4ac = (-2)^2 - 4(1)(10) = 4 - 40 = -36

-b +- sqrt(-36) / 2a

(2 +- sqrt(-36)) / 2

sqrt(-36)

sqrt(-1 * 36)

sqrt(-1) * sqrt(36)

i * 6

6i

2 + 6i / 2 ; 1 + 3i

2 - 6i / 2 ; 1 - 3i

Solutions: 1 + 3i, 1 - 3i

Answer:

x = 1± 3i

Step-by-step explanation:

x^2-2x+10=0

We can complete the square to solve by subtracting 10 from each side

x^2-2x+10-10=-10

x^2 -2x = -10

We need to add (2/2) ^2  to each side or 1

x^2 -2x+1 = -10 +1

x^2 -2x+1 = -9

The left side factors into (x- (2/2) ) ^2

(x-1) ^2 = -9

Take the square root of each side

sqrt((x-1) ^2 =± sqrt(-9)

x-1 = ±sqrt(-1) sqrt(3)

Remember the sqrt(-1) = i

x-1 = ± 3i

Add 1 to each side

x-1+1 = 1± 3i

x = 1± 3i

Answer:

-4r

Step-by-step explanation:

r + (-5r)

1r + (-5r)

Factor out an r

r( 1 -5)

One minus 5 is negative 4.   If you have one dollar and you borrow five dollars,  how much did you borrow?  4  but that 4 is borrowed so it is negative

r (-4)

-4r

Answer:

x=3

Step-by-step explanation:

Basically the question is asking what value of x gives the same value for y

(or where do the 2 lines cross)

the input is x=3, the out put is y =-1

Answer:

x = 3

Step-by-step explanation:

X - LINE: Horizontal

Y - LINE: VERTICAL

The reason why it's x = 3 is because it's where both line up to, where they both intersect.

Input (x) is 3 & output (y) is -1

Hope this helps you!!! :)

Answer:

AC= 6 cm

Step-by-step explanation:

It is given that ABCD is a trapezoid

Also AC divides the trapezoid into two similar triangles

ΔABC≈ΔDCA

The ratio of corresponding sides of similar triangles are equal, so we have

[tex]\frac{AB}{CD} =\frac{BC}{AC} =\frac{AC}{AD}[/tex]

now we can take

[tex]\frac{BC}{AC} =\frac{AC}{AD}[/tex]

[tex]\frac{4}{AC} =\frac{AC}{9}[/tex]     ( since BC=4 and AD= 9)

now we cross multiply

[tex]4(9)=AC^{2}[/tex]

[tex]AC^{2}=36[/tex]

[tex]AC=\sqrt{36}[/tex]    (taking square root )

AC= 6 cm

Answer:

The median is four.

Step-by-step explanation:

First you put the numbers in order from least to greatest and write the number as many times as indicated.

2 2 2 3 4 4 4 4 6 6 7 7 7 8 9

then start from one side then go to the other crossing out numbers. So cross out a two, then nine, then another two, then eight, then the last two, then the first seven and so on. When your done you should be left with one middle number, in this case it's four.

Answer is provided in the image attached

Slope-intercept form:

y = mx + b   "m" is the slope, "b" is the y-intercept

For lines to be perpendicular, their slopes have to be the opposite/negative reciprocal (flipped sign and number)

For example:

slope is 2

perpendicular line's slope is -1/2

slope is -3/4

perpendicular line's slope is 4/3

#1: The slopes are the same, meaning they are parallel lines

#2: First isolate the "y" in the first equation

-4x + 5y = -5

5y = -5 + 4x

y = -1 + 4/5x   They are not perpendicular because the slopes are 4/5 and -4/5

#3: Isolate "y" in the second equation

8y = 3x - 32

y = 3/8x - 4         They are perpendicular

#4: Isolate "y" is the 1st equation

10y = -9x

y = -9/10x     They are parallel lines

The 3rd choice is your answer

Find the volume of the bath tub by multiplying all the dimensions together:

18 inches = 1.5 feet:

5 ft x 3 feet x 1.5 feet = 22.5 cubic feet.

The tub is 3/4 full so multiply the volume by 3/4 to find the amount of water in the tub:

22.5 x 3/4 = 16.875 cubic feet of water.

The tub drains at 1 cubic foot per minute, so it would take about 17 minutes to drain.    (16.875 rounded to the nearest whole minute).

Answer:

$0.13 (this is a rounded answer)

Step-by-step explanation:

The unit cost is the cost of a 1 ounce bottle so you would divide the cost by the total number of ounces:

$2.00 divided by 16 is 0.125 but you would round because you need a cost not a decimal.

So your final answer would be $0.13 per ounce.

Answer:

$.13 per fl oz

Step-by-step explanation:

To find the unit cost, we take the cost and divide by the number of units

$2.00/16

$.125 per fl oz

Since this is money we round to the nearest cent.

$.13 per fl oz

Answer:

1915/22

Step-by-step explanation:

5745 / 66

Factor the numbers:

5745 = 3 * 1915

66 = 3 * 22

(3 * 1915) / (3 * 22)

Cancel the common factor:

1915/22

To divide 5,745 by 66, first determine how many times 66 fits into 574, then bring down the next digit and repeat. The result is 87 with a remainder of 3 or 87.068 as a decimal. The answer to 5,745 ÷ 66 is 87.068.

To find the result of 5,745 ÷ 66, follow these steps:

The answer to 5,745 ÷ 66 is 87.068.

Answer:

1: 6

2: 1,2,3

3: 4m-1>5m-4

4: Not enough data

5: n = 11

6: The ceiling is lower than 3m

7: G = 7

8: C = 18

9: p + 18 = 41; p = 23

10: D = 100t

Step-by-step explanation:

Question 1:

5*2+x/2-7

5*2+6/2-7

10+6/2-7

10+3-7

13-7

6

Question 2:

4*2<16

8<16 True

4*1<16

4<16 True

4*3<16

12<16 True

4*4<16

16<16 False

Question 3:

Let's plug in 1 for m

4*1-1____5*1-4

4-1_____5-4

3_____1

3>1

Question 4:

You did not give an equation, so I cannot answer.

Question 5:

2*11 + 5 =27

22 + 5 = 27

27 = 27

So n = 11

Question 6:

x<3

The ceiling is lower than 3m because x<3

Question 7:

5.1g = 35.7

5.1g/5.1=35.7/5.1

g = 7

Check: 5.1 * 7 = 35.7

Question 8:

36 + c = 54

36 + c -36 = 54 - 36

c = 18

Check: 36 + 18 = 54

Question 9:

p + 18 = 41; p = 23 is correct because the number of paperback books plus the number of hardcover books would equal the total number of books sold. Check: 23 + 18 = 41

Question 10:

d=100t is correct because each time t goes up one it goes up 100. Example: if it is at one hour, than it is 100, if it is at 3 hours, than d = 100*3 = 300, which is the same pattern as the table.

Hope this helps!

The expression 5x² + x - 7 is calculated by substituting x with 6. Inequality and equation solving techniques are used to find the solutions to 4n < 16, 4m - 1 compared to 5m - 4, and other given problems, resulting in specific numerical solutions and identifying suitable real-world scenarios like a ceiling height represented by x < 3.

To solve the expression 5x² + x
- 7 where x equals 6, we substitute and get 5(3)² + (3) - 7 = 45 + 3 - 7 = 41.

The solutions to the inequality 4n < 16 from the set {1,2,3,4} are 1, 2, and 3, since 4 times each of these is less than 16.

Comparing the expressions when m = 3, we get 4m - 1 and 5m - 4. Substituting we have 12 - 1 < 15 - 4, thus 11 < 11, which is false, so 4m - 1 = 5m - 4.

The inequality 15 > w is only true for w = 14. Values w = 15 and w = 21 do not satisfy the inequality.

In the equation 2n + 5 = 27, solving for n within the replacement set gives n = 11 as the correct solution.

The inequality x < 3 represents a situation where The ceiling is lower than 3 m.

To solve 5.1g = 35.7, divide both sides by 5.1 to find g = 7.

For the equation 36 + c = 54, subtract 36 from both sides to get c = 18.

Cassandra's situation is best represented by the equation p + 18 = 41, resulting in p = 23 paperback books sold.

The relationship between the distance d and time t from the truck table is d = 100t, since distance is increasing by 100 kilometers every hour.

Answer:

The difference of given expressions is [tex]\frac{x^2+7x+10}{x^3-9x}[/tex].

Step-by-step explanation:

The given expression is

[tex]\frac{2x+5}{x^2-3x}-\frac{3x+5}{x^3-9x}-\frac{x+1}{x^2-9}[/tex]

Find factors of denominators.

[tex]\frac{2x+5}{x(x-3)}-\frac{3x+5}{x(x^2-9)}-\frac{x+1}{x^2-9}[/tex]

Use [tex]a^2-b^2=(a-b)(a+b)[/tex]

[tex]\frac{2x+5}{x(x-3)}-\frac{3x+5}{x(x-3)(x+3)}-\frac{x+1}{(x-3)(x+3)}[/tex]

Take  [tex]x(x+3)(x-3)[/tex] as LCD.

[tex]\frac{(x+3)(2x+5)-(3x+5)-x(x+1)}{x(x+3)(x-3)}[/tex]

[tex]\frac{(2x^2+5x+6x+15)-3x-5-x^2-x}{x(x^2-3^2)}[/tex]

[tex]\frac{2x^2+5x+6x+15-4x-5-x^2}{x(x^2-9)}[/tex]

[tex]\frac{x^2+7x+10}{x^3-9x}[/tex]

Therefore the difference of given expressions is [tex]\frac{x^2+7x+10}{x^3-9x}[/tex].

Answer:

(x+5)(x+2)/x^3-9x

Step-by-step explanation:

For short if taking on edgen then option A is correct.

Answer:

[tex]4x^2+34x-28=0[/tex]

x = 0.76

Step-by-step explanation:

We can write the area of steel before it is cut as:

Area = [tex](11+2x)*(6+2x)cm^2[/tex]

Expanding it by multiplying the brackets to get:

Area = [tex]4x^2+22x+12x+66[/tex]

Area  area of steel before cutting = [tex]4x^2+34x+66[/tex]

Then we need the area of steel after 11*6 inside dimensions are cut out:

[tex]4x^2+34x+66-(11*6)=4x^2+34x[/tex]

This area should be close to 28 cm[tex]^2[/tex], hence the equation becomes:

[tex]4x^2+34x-28=0[/tex]

Moreover, plotting the graph gives us a value of x = 0.76.

Answer:

Step-by-step explanation:

4x2+34x-28

0.76cm

plato

Answer:

Cameron will make 15 baskets out of 50 tries.

Step-by-step explanation:

Since Annie can take out 18 baskets out of 30 and her brother can take out half as much, then we know that 18:2 is 9, so we know that Cameron can take out 9 baskets out of 30. Since this is our proportion( 9:30 ), we can simplify it which brings us to 3:10. And since we must find how much he will take out in 50 tries, We multiply the proportion by 5 which is 15:50, meaning he will make 15 baskets.

Final answer:

Cameron can make 15 baskets out of 50 attempts based on his success rate, which is half of his sister Annie's success rate of 60%.

Explanation:

Annie can make 18 baskets out of 30 attempts, which means her success rate is 60% (since 18 is 60% of 30). Her younger brother Cameron can make half as many baskets in the same number of attempts, so Cameron's success rate is 30% because half of 18 is 9, and 9 is 30% of 30. If Cameron were to attempt 50 shots, we would calculate the number of baskets he can make by applying his success rate to these 50 attempts. Therefore, 30% of 50 is 15. This means Cameron can make 15 baskets out of 50 attempts.

3=x/100*12

x/25*3=3

x=3:3/25

x=25

The answer is 25%. Hope this helps! <3

Answer:

3 is 25% of 12

Step-by-step explanation:

Answer:

Correct answer is C.

Step-by-step explanation:

Note that graph in the diagram has period [tex]\pi.[/tex]

Consider the function [tex]y=-2\cos (2(x+\pi ))-1.[/tex]

This function has a period [tex]T=\dfrac{2\pi}{2}=\pi.[/tex] Functions in another options have period that differes from [tex]\pi.[/tex]

The graph of this function passes through the point (0,-3), because

[tex]y(0)=-2\cos (2(0+\pi ))-1=-2\cos 2\pi-1=-2\cdot 1-1=-3.[/tex]

Answer:

[tex]y=-2cos (2(x+\pi ))-1[/tex]

Step-by-step explanation:

We are a given a graph from which we can clearly see that y = -1 when x  = 0.

Next, we will find out which of the options is the equation of the given graph and for that we need to set our calculator to the radian mode and then put the value of x to be 0.

1. y = -2 cos (4(x + pi)) - 1 = -2 cos (4(0 + pi)) - 1  = 3

2. y = 2 cos(x + pi) = 2 cos(0 + pi) = -1

3. y = -2 cos (2(x + pi)) - 1 = -2 cos (2(x + pi)) - 1 = -3

We get y = -1 when x = 0 in equation number 3, y = -2 cos (2(x + pi)) - 1, so that is the equation of the given graph.

Answer: 9 gallons

Step-by-step explanation:

Set up the proportion, then multiply to solve for the variable.

[tex]\dfrac{\frac{1}{2}\ \text{gallon}}{4\ \text{pints}}=\dfrac{x}{72\ \text{pints}}[/tex]

[tex](72\ \text{pints})\dfrac{\frac{1}{2}\ \text{gallon}}{4\ \text{pints}}=(72\ \text{pints)}\dfrac{x}{72\ \text{pints}}[/tex]

[tex]\dfrac{36\ \text{gallons}}{4}=x}[/tex]

9 gallons = x

To convert pints to gallons, divide the number of pints (72) by the number of pints in a gallon (8), resulting in 9 gallons.

To determine how many gallons are the equivalent of 72 pints, we use the conversion factor that 1 gallon is equivalent to 8 pints.

First, we divide the given number of pints by the number of pints in a gallon:

Therefore, 72 pints is equivalent to 9 gallons.

Answer:

Equation of the line with m=3  and b = 8.25 is y=3 x+8.25

Step-by-step explanation:

m = 3 and b = 8.25

To get equation of line we use y=mx+b

Where m represents the slope = 3

b represents the y intercept = 8.25

Plug in the values in y=mx+b

y= 3x + 8.25

Equation of the line with m=3  and b = 8.25 is y=3 x+8.25

Answer:

y = 3x + 8.25

Step-by-step explanation:

y = mx + b

y = 3x + 8.25

Answer:

A) 2(6x + 13)

Step-by-step explanation:

2(5 + 8 + 6x)

= 2(13 + 6x)

= 2(6x + 13)

Answer:

2(6x + 13)

Step-by-step explanation:

Answer:

slope = - [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

note that BC is perpendicular to AB, hence the slope of BC is the negative reciprocal of the slope of AB

[tex]m_{BC}[/tex] = - [tex]\frac{1}{2/3}[/tex] = - [tex]\frac{3}{2}[/tex]

Answer: y = 0

Step-by-step explanation: Since the degree of the numerator is lower than the degree of the denominator, the horzontal asymptote is 0.

To find the side length of Rachael's square patio with an area of 290 square feet, you have to take the square root of the area. The square root of 290 is approximately 17. So, the side length of the patio is approximately 17 feet.

The subject at hand pertains to the geometry and area calculation of a square. In a square, all sides are equal. Thus, to find the side length when only given the area, you can simply take the square root of the area. The square root of 290 is approximately 17. Therefore, Rachael's patio has a side length of approximately 17 feet, making option C the correct answer.

https://brainly.com/question/3120622

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Answer:

10 is 5,650

9 is 18.5

11 is 71.24

Step-by-step explanation:

11 .2.74  x25

3x-5y=n

3x-5y=1

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

Final Answer:

The difference in the unit price per ounce for the laundry detergent Mr. and Mrs. O’Brien purchased is $0.045 per ounce, with Mr. O’Brien's detergent being the more cost-effective option.

Explanation:

To find the unit price per ounce for each type of laundry detergent, we first determine the cost per ounce by dividing the total cost by the total weight. For Mrs. O’Brien's detergent, which is 112 ounces for $13.44, the unit price per ounce is $13.44/112 = $0.12 per ounce. For Mr. O’Brien's detergent, which is 17.5 pounds for $19.60, we convert pounds to ounces (1 pound = 16 ounces) and calculate the unit price per ounce as $19.60/(17.5 * 16) = $0.165 per ounce.

The difference in unit price per ounce is then found by subtracting Mrs. O’Brien's unit price from Mr. O’Brien's unit price, resulting in $0.165 - $0.12 = $0.045 per ounce. The positive value indicates that Mr. O’Brien's detergent is more cost-effective on a per-ounce basis.

This mathematical approach provides a clear comparison of the unit prices, allowing consumers to make informed decisions based on cost-effectiveness. The calculated difference highlights the savings per ounce associated with Mr. O’Brien's laundry detergent.

Answer:the last one, 25 tenths

Step-by-step explanation:

(x, y) = (-7, 2)

Divide the second equation by 4 and add it to the first.

... (-x) +(4)/4 = (-6y+19) +(-4x -12y)/4

... -x +1 = -9y -x +19 . . . . simplify

... 9y = 18 . . . . . . . add 9y +x -1

... y = 2 . . . . . . . . . divide by 9

... -x = -6·2 +19 = 7

... x = -7

The solution is (x, y) = (-7, 2).