Solve each data for x: (a) a rectangle has (2x + 1) and (x +2) as length and width. Its area is 77 (b.) a triangle has (2x+2) and (x+3) as base and height. Its area is 35

Answers

Answer 1
area of a rectangle: A= Length*width
(2x+1)(x+2)=77
2x^2+4x+x+2=77
2x^2+5x+2=77
2x^2+5x-75=0
(x-5)(2x+15)=0
x=5 or x=-7.5
Length cannot be negative, so x=5 only
the length is 11, the width is 7
Next, let's look at the triangle.
Area of a triangle: A=1/2 of base*height
(1/2)(2x+2)(x+3)=35
2x^2+8x+6=70
2x^2+8x-64=0
x^2+4x-32=0
(x-4)(x+8)=0
x=4
the base is 10, the height is 7

Related Questions

Points d, e, and f are plotted on a number line. the coordinate of point f is 5. points d and e are the same distance from point f. what could be the coordinates of d and e?
a. d = –7, e = –1
b. d = –2, e = 12
c. d = 0, e = 5
d. d = 8, e = 11

Answers

i think its b
hope i helped

The  coordinates of d and e b. d = –2, e = 12.

To find the coordinates of points D and E, we need to remember that they are the same distance from point F, which has a coordinate of 5. This means D and E are equidistant from F on the number line. Let's check each option to see which one satisfies this condition:

Option a: d = -7, e = -1

The distance from -7 to 5 is 12.

The distance from -1 to 5 is 6.

Since the distances are not equal, this option is incorrect.

Option b: d = -2, e = 12

The distance from -2 to 5 is 7.

The distance from 12 to 5 is also 7.

Since the distances are equal, this option is correct.

Option c: d = 0, e = 5

The distance from 0 to 5 is 5.

The distance from 5 to 5 is 0.

Since the distances are not equal, this option is incorrect.

Option d: d = 8, e = 11

The distance from 8 to 5 is 3.

The distance from 11 to 5 is 6.

Since the distances are not equal, this option is incorrect.

Therefore, the correct answer is option b: d = -2, e = 12.

The sum of 2 numbers is 44 the smaller number is 16 less than the larger number what are the numbers

Answers

x=27 and y=11
if you let each number equal x and y we know the sum is 38 so x+y=38
and the smaller is 16 less than the larger
. so if we say the smaller number is 7 then x-16=y
these can be solved as a simultaneous equation. x+(x-16)=38
2x-16=38
2x=54
x=27
(27)-16=y
y=11
so the answer is x=27 y=11

FOR 30 POINTS WILL MARK BRAINLIEST you have 500 sheets of notebook paper after one week you have 72% of the sheets left. you use the same number of sheets each week write an equation that represents the number y of pages remaining after 8 weeks

Answers

72% of 500 is 360 sheets, if you used 10 sheets each week it would be 72%*5 --(10x8)= 280 sheets left

4000 / 72 = y Is what I came up with.

The solution to the equation 4(x – 7) = 64 is shown. Which step is a result of combining like terms?

A) Step 2
B) Step 3
C) Step 4
D) Step 5

Answers

Step 3 we're adding 28 to both sides which leads to step 4, where we are combining like terms. On the left side -28+28 turns into 0 and effectively goes away. On the right side 64+28 becomes 92

Answer: C) step 4

Deon is saving money to buy a game. so far he has saved $20 , which is four-fifths of the total cost of the game. how much does the game cost?

Answers

Let y be the $ of the game
(4/5)y=20
4y=100
y=25

This writing prompts is hard

Answers

a.) Simplifying the equation would lead you to 15x^2-3x+9

b.) You know your answer is correct because you're adding the two polynomials together. 9x^2+6x^2 is 1tx^2. Now you have 2x-5x and since the negative is bigger, you get -3x. Then 5+4 is 9. You have no like terms therefore your answer is 15x^2-3x+9

Your survey indicates the following favorite beverage choices: 20 milk, 13 water, 22 soda, 32 coffee. What percentage of customers can you satisfy if you just serve milk or water?

Answers

20+13=33 out of 33+22+32=87
33 out of (/) 87 = 33/87=0.379 or 0.38 or 38% :)
28.71% of Customers will be satisfied from just milk or water.

work: 20+13=33 +(22+32)=87
87 x .33 = 28.71

Mrs. Noyes fills up a 5 gallon can of gas from the McIntosh’s local convenience store. They are selling gas at $2.099 a gallon. How much is she going to pay at the pump

Answers

Mrs. Noyes fills up a 5 gallon can of gas from the McIntosh’s local convenience store. They are selling gas at $2.099 a gallon. How much is she going to pay at the pumpp

Calculate the loss on selling 50 shares of stock originally bought at 13 and 3/4 and sold at 12

Answers

Note that 13 3/4 = 13.75.

The cost of purchasing the stock is
(50 shares)*(13.75 $/share) = $687.50

The revenue generated by selling the 50 shares at $12 per share is
(50 shares)*(12 $/share) = $600.00

Gain = 600.00 - 687.50 = - $87.50
The loss is $87.50

Answer: $87.50


how many outliers are there in this data set 1, 4, 6, 9, 12, 13, 13, 17, 19
A. 2
B. 3
C. None
D. 1

Answers

Just find the average and whatever is more than like say 5 away is an out lier

The value of 110 coins, consisting of dimes and quarters, is $20.30. how many of each kind of coin are there?

Answers

d + q = 110......d = 110 - q
0.10d + 0.25q = 20.30

0.10(110 - q) + 0.25q = 20.30
11 - 0.10q + 0.25q = 20.30
-0.10q + 0.25q = 20.30 - 11
0.15q = 9.30
q = 9.30/0.15
q = 62 <==== there are 62 quarters

d = 110 - q
d = 110 - 62
d = 48 <==== there are 48 dimes

Evaluate the determination for the following matrix [144] [522] [155]

Answers

Matrix :

1    4    4

5    2    2

1    5    5

=> Determinant =

1 * (2*5 - 2*5) - 4 * (5*5 - 1*2) + 4 * ( 5*5 - 2*1)

= 1*(10 - 10) - 4*(25 - 2) + 4*(25 -2) = 1*0 + 4* 23 + 4*(25 - 2) = 0 - 4*23 + 4*23 = 0

Answer: 0

A cheetah can run 103 feet per second. A zebra can run x feet per second. Use the Distributive Property to write and simplify an expression for how much farther the cheetah can run in 10 seconds

Answers

We are given that the rate of cheetah Rc is:

Rc = 103 ft / sec

 

And the rate of zebra Rz is:

Rz = x ft / sec

 

We are to find the distance between the two after 10 seconds, that is:

distance = (103 – x) 10

distance = 1030 – 10 x

Final answer:

The expression for how much farther a cheetah can run than a zebra in 10 seconds, given that the zebra's speed is x feet/second, is 1030 - 10x feet.

Explanation:

To find out how much farther the cheetah can run in 10 seconds, we need to determine the difference between the cheetah's speed and the zebra's speed, and then multiply by time.

Firstly, the cheetah's speed is 103 feet per second. Let x denote the zebra's speed. The difference in speed is expressed as (103 - x) feet per second.

To find out how much farther the cheetah runs in a given time, we multiply the difference in speed by time. Therefore, the expression for how much farther the cheetah can run in 10 seconds is 10 * (103 - x), which simplifies to 1030 - 10x feet.

Learn more about speed here:

https://brainly.com/question/6276874

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Solve for x: |2x + 12| = 18

Answers

2x + 12 = 18
18 - 12 = 6
2x = 6
x = 3
so you want to drop the absolute value signs and you need to make two equations:

2x + 12 = 18 OR 2x + 12 = -18
subtract both sides by 12 for both equations
2x = 6 OR 2x = -30
divide both sides by 2 for both equations
x = 3 OR x = -15

i hope this helps!!

Which inequality's solution is graphed here?
A) x + 9 < 5
B) x - 5 < 9
C) x + 5 < 9
D) x - 9 < 5

Answers

there is an open dot on 4.....an open dot means there is no equal sign in the problem....and it is shaded to the left...means it is less then. So ur looking for an inequality with the answer being x < 4.

x + 5 < 9 <== its gonna be this one
x < 9 - 5
x < 4 

Answer:

there is an open dot on 4.....an open dot means there is no equal sign in the problem....and it is shaded to the left...means it is less then. So ur looking for an inequality with the answer being x < 4.

x + 5 < 9 <== its gonna be this one

x < 9 - 5

x < 4 

which equation best represents the line graphed above
a x=4
b x= _ 4
y= x -4
y= - 4

Answers

Hi there!

The correct answer is option B

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

Since x = -4 is a vertical line(perpendicular to horizontal), so there is no y-intercept and the slope is undefined.

"A vertical line has undefined slope because all points on the line have the same x-coordinate.

So, the slope is undefined and we also don't have the y - intercept.

------------
Credit to my graphing calculator, it looks like this ↓↓

Best of luck with your studies!

The correct answer is option B. The equation best represents the line graphed is x = -4.

What is an equation of a line?

An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.

Since x = -4 is a vertical line(perpendicular to horizontal), there is no y-intercept and the slope is undefined.

A vertical line has an undefined slope because all points on the line have the same x-coordinate.

So, the slope is undefined and we also don't have the y-intercept.

To know more about an equation of the line follow

brainly.com/question/18831322

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what is the vertex of the graph of the function below y=x^2-10x+21

Answers

The vertex is at (5, -4)

What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?


24.8 units

27.8 units

28.5 units

30.9 units

Answers

To calculate the perimeter, consider each side separately.

Left side: This side is easiest - it's a straight vertical line that's 8 units long.

Top side: If you look carefully, this side is really the hypotenuse of a triangle that is 5 units tall and 9 units long. Using the Pythagorean Theorem, you can calculate the length of the hypotenuse to be 5^2 + 9^2 = c^2 --> c = 10.3

Bottom side: Just like the top side, this side is the hypotenuse of a triangle that is 3 units tall and 9 units long. Pythagoras again: 3^2 + 9^2 = c^2 --> c = 9.5

Add these sides up for the final perimeter: 8 + 10.3 + 9.5 = 27.8

Answer:

The answer would be 27.8


Can someone help me really quickly please? I already have an answer, but im not sure if it's wrong or right :/

Answers

Substitute in the values into the inequality.

11(-6) - 14(-6) > 18
-66 - (-84) > 18
-66+84 > 18
18>18

Since 18 is not greater than 18, the answer is false.

Hope this helps!
No! (-6, -6) Is the solution to 11x-14y>18

Θ is an acute angle and cosecant theta equals nine halves commacscθ= 9 2, find secant ((pi over 2) minus theta) .sec π 2−θ. do not use a calculator and express

Answers

?????????IM NOT SUREEEE

What is an equation of the line that passes through the points (1 3) and (8 5)? y+1+2/7(x+3), y-5=2/7(x-8), y-1=2/7(x+3), y+5=2/7(x-8)?

Answers

Given:
The line passes through the points (1, 3) and (8,5).

Let the equation of the line be
y - y₁= m(x - x₁)
where
(x₁, y₁) is a point on the line.

Calculate the slope of the line.
m = (5 - 3)/(8 - 1) = 2/7

Therefore, if we use (x₁, y₁) = (8, 5), then
y - 5 = (2/7)(x - 8)

Answer:  [tex]y-5= \frac{2}{7}(x-8) [/tex]

2. Pat is six years older than twice his Cousin Zach’s age. The sum of their ages is less than 36.

What is the greatest age that Zach could be?

Answers

P = Pat
C = Cousin Zach

2C + 6 = P
2C + 6 - 6= P - 6
2C = P - 6
2C/2 = P - 6/2
C = P - 3
C + 3 = P
so (C + 3) + P < 36
 (C + 3 - 3) + P < 36 - 3
C + P < 33

Can you see what I am doing?


Let denote Pat's age with P and Zach's age with Z.
We know the following facts:
1.Pat is six years older than twice his Cousin Zach’s age. We can rewrite this statement as:
P=2*Z+6
2. The sum of their ages is less than 36.
P+Z<36
In order to find the greatest age that Zach could be we should find for which Z 
P+Z=35 (the first whole number smaller than 36) 
P=35-Z
35-Z=2*Z+6
35-6=3Z
29=3Z
Z=29/3
Z=9

Marc earned $1,650 per month as an assistant technician at a recording studio. His new job pays $9.80 per hour with time and a half for all hours over 36 hours per week. How many hours of overtime per week will he need to work to earn the same amount per week as his current job?

Answers

Marc will need to work just over 4 hours of overtime each week at his new job, which pays $9.80 per hour and $14.70 per hour for overtime, to earn the equivalent of his previous monthly income of $1,650.

To determine the number of overtime hours Marc needs to work at his new job to earn the same monthly income he did at his previous job, we'll first calculate his weekly income at his old job, then use the overtime pay rates at the new job to find the equivalent number of hours needed.

Marc previously earned $1,650 per month. Assuming a standard 4-week month, his weekly income was:

$1,650 per month / 4 weeks per month = $412.50 per week.

At his new job, Marc earns $9.80 per hour with time and a half for all hours over 36 hours a week. This means his overtime pay is 1.5 times his hourly rate, which is:

$9.80 per hour x 1.5 = $14.70 per hour for overtime.

Marc's income for the first 36 hours at his new job would be:

36 hours x $9.80 per hour = $352.80

To earn the equivalent of his old weekly salary, we must make up the difference with overtime pay:

$412.50 (old weekly income) - $352.80 (new regular pay) = $59.70 needed from overtime.

To determine the overtime hours needed to make $59.70: $59.70 / $14.70 per hour = approximately 4.06 hours.

Therefore, Marc will need to work just over 4 hours of overtime each week to earn the same amount he did at his previous job.

Children younger than ______ years of age must be restrained in an approved child passenger safety seats unless they are at least 4 ft, 9 inches in height.

Answers

Children younger than __8___ years of age must be restrained in an approved child passenger safety seats unless they are at least 4 ft, 9 inches in height.

Two trains leave a station at 11:00am. one train travels north at a rate of 75 mph and another travels east at a rate of 60 mph. assuming the trains do not stop, about how many minutes will it take for the trains to be 150 miles apart

Answers

it should be about 7.5 hours

-10x-2(5x+4)-[-2(3x-4)-2x]=0

Answers

If you're looking for what is, x = 4/3 (or) 1.3...

Mark as brainliest if l helped!

need help with this geometry question, solving for x and please explain the formula for this

Answers

Alright, so what we can take as a given is that arcDE/2= ∠CDE=2x+20 since the arc corresponding to the angle is 2*the angle. To solve for arcDE, we multiply both sides by 2 to get 2(2x+20)=4x+40=arcDE. Since the arcs in a circle add up to 360 degrees and we only have -20+30x and arcDE, we have -20+40+4x+30x=360 using the associative property. Simplifying, we get 20+34x=340. Subtracting 20 from both sides, we get 340=34x. Next, we can divide both sides by 34 to get 10=x. 

what is the constant rate of change of y=7-13x

Answers

Final answer:

The constant rate of change in the linear equation y=7-13x is -13, representing the slope of the line which remains constant for any value of x. This is different from nonlinear functions, where the rate can vary with x.

Explanation:

The constant rate of change in the equation y=7-13x refers to the slope of the line represented by this linear equation. In this case, the constant rate of change, or the slope, is -13. This means for every one unit increase in x, y decreases by 13 units. Since the equation is linear, this rate does not change regardless of the value of x, unlike in nonlinear functions where the rate of change can vary with x.

To elaborate, if we have a nonlinear function, the rate of change depends on the interval of x we are looking at. For a linear function like this one, the slope is the same over any interval, so there's no need to compute it over smaller ranges of x to understand the rate of change.

Moreover, in calculus, the derivative represents the rate of change, and for a linear function, the derivative is simply the coefficient of x. Hence, the derivative of y with respect to x is -13. The derivative is zero for any constant term in a function, such as the 7 in the given equation.

Kevin's bucket contains 2 1/2 gal of water. If he gives his horse 2/3 of the water, how much water does the horse get?

Answers

2.5 Gallons of water ..
2/3 of the 2.5 Gallons = 1.67 Gallons of water is the amount the horse will get :)

Answer:

2.5

Step-by-step explanation:

Jana is on a two-day hike. The function graphed shows the total distance she hiked, in miles, after x hours on the second day.

Select from the drop-down menus to correctly identify the information about Jana's hike provided by the graph.

Answers

Just took the same quiz.

The slope is 2.
The slope represents the number of miles hiked every hour.

Answer:

The slope is 2.

Step-by-step explanation:

The function graphed shows the total distance she hiked, in miles, after x hours on the second day.

Seeing at the graph, we have the following points.

(2,8) , (3,10) , (4,12)

For slope we will do the following.

[tex]\frac{10-8}{3-2} =\frac{2}{1}[/tex] = 2

[tex]\frac{12-10}{4-3} =\frac{2}{1}[/tex] = 2

So, the slope is 2.

The slope represents that 2 miles is hiked in each hour.

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