Answers
Answer:
D = <-2, 10>Step-by-step explanation:
Domain is from x to x.
You can use a ruler to determine it:
Put ruler perpendicular to X-axis at the left end. Move the ruler slowly along X-axis to the right.
When the ruler touch the graph there the x is the beginig of the domain.
Move along to the right. When the ruler touches end of graph there the x is end of the domain.
The filled dot means < >, and the empty dot means ( ).
Related Questions
Find the length of the segment AB if points A and B are the intersection points of the parabolas with equations y=−x2+9 and y=2x2−3 . URGENT PLS HELP
Answers
Answer:
The length is 4
Step-by-step explanation:
Type in the equations into Desmos, and you will find the intersected points in the graph. Then just look at the distance between the 2 points
Answer:
AB=4
Step-by-step explanation:
1. Since you are finding the intersection points of two parabolas:
a. y=-x²+9
b. y=2x²-3
2. You have to set them equal to each other:
2x²-3= - x²+9
2x²+x=9+3
3x²=12
x²=4
This is the crucial part; the absolute value of x is equal to plus minus the square root of 4, since either -2 squared with parentheses or 2 squared is equal to 4.
√x²=±√4
x=±2
or
x=2; x=-2
3. Then you substitute them into each equation. For this step, any sign 2 will work.
a. y=-(2)²+9
y=-4+9
y=5
b. y=2(2)²-3
y=8-3
y=5
4. So our coordinates will be (2,5) and (-2,5). These are the points of intersection.
5. Now we use the distance formula:
[tex]\sqrt{(x₂-x₁)^{2} +(y₂-y₁)^{2} }[/tex]
The subscripts didn't work for this but I mean the square root of x 2 - x 1 in parentheses plus y 2 -y 1.
[tex]\sqrt{(2+2)^{2} +(5-5)^{2} }[/tex]=
√16=
4
The absolute value rule that I mentioned above doesn't work for this because its a distance and you can't have a negative distance.
So AB=4
Which number gives you a rational sum when you add it to 4/7?
Answers
Answer:
Thus, the rational number 93/77 should be added to -7/11 so as to get 4/7.
Which term has an expression with a base of 8
Answers
Answer:
8^4
Step-by-step explanation:
A 'base' is a number with an exponent.
The expression [tex]8^4[/tex] has the base 8.
We need to find which of the given term has an expression with a base of 8.
What is base of an expression?A numerical system's number basis, or base for short, informs us of the particular or distinctive symbols and notations it employs to express a value. The number used to construct a power with an exponent, such as the 3 in 3², is known as the base.
In the expression [tex]8^4[/tex], 8 is the base and 4 is the power or exponent.
Therefore, the expression [tex]8^4[/tex] has the base 8.
To learn more about the base of an expression visit:
https://brainly.com/question/13261883.
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I really really need help with this question!!! I do not know how to write it and everywhere else I've looked for help with this tries to make me pay to get help and an understanding. Will someone please help me with this???? I will give you "brainliest." I just REALLY need help with this one question. Someone please help me!!!
Answers
Answer: for part c the gas would not remain a liquid.
Step-by-step explanation: Because as stated, the tempature dropped to -49 degrees farhenheit, and for instance, oxygen, a gas, becomes a liquid if you cool it down to - 297 degrees Fahrenheit (really, REALLY cold) and if you cool it down further to -362 degrees Fahrenheit it becomes a solid, so therefore it definetly couldnt stay a liquid if the temp raised so high. it would seconense back.
i do not know if this is correct but i did try so i am deeply sorry if this fails.
Soccer ball profit
y=-6x^2 + 100x - 180
Suppose the store wants to earn a daily profit of $150 from the sale of soccer balls. To earn this profit, what price should the store charge for each soccer ball? Explain how to solve this problem.
Answers
Answer:
$8.33 per soccer ball.
Step-by-step explanation:
Y max is =236.67 is the max profit from the soccer balls. This goes on when you charge 8.33 a ball
Answer:
need to solve the equation 150 = -6x2 + 100x - 180. I can subtract 150 from both sides and use the quadratic formula to find x = 4.53 and 12.13. This means that if the store sells soccer balls for $4.53 or $12.13, it will earn a daily profit of $150.
A metal bar ten feet long weighs 128 pounds. What is the weight of a similar bar that is two feet four inches long?
Round to the nearest whole pound. (Use cross multiplication to solve the ratio).
Answers
Answer:
Seems like 29 pounds (29.44 not rounded)
Step-by-step explanation:
s = 2d/t solve for d
Answers
you isolate the variable by dividing both sides by factors that don’t contain the variable
La suma de dos numeros es 208 y su diferencia es 122¿cuales son los numeros?
Answers
Answer:
Los números son:
43 y 165
Step-by-step explanation:
Planteamiento:
a + b = 208
a - b = 122
Desarrollo:
de la segunda ecuación del planteamiento:
a = 122 + b
sustituyendo este último valor en la primer ecuación del planteamiento:
(122+b) + b = 208
2b = 208 - 122
2b = 86
b = 86/2
b = 43
a = 122 + b
a = 122 + 43
a = 165
Comprobación:
165 + 43 = 208
165 - 43 = 122
Solve for y in 2y + 5 = - 3y - 10.*
Answers
Answer:
y = -3
Step-by-step explanation:
2y +3y = -10 -5 (collect the terms then calculate)
5y = -15 ( divide both sides )
then you'll get your answer which is y = -3
Help? : )) thank yall
Answers
Answer:
Third option: [tex]-10x^7y^2[/tex]
Step-by-step explanation:
[tex]12x^4\left(-\frac{5}{6}x^3y^2\right)[/tex]
Remove brackets:
[tex]12x^4\times-\frac{5}{6}x^3y^2[/tex]
Multiply the [tex]x^2[/tex]:
[tex]12\times-\frac{5}{6}x^{4+3}\times y^2[/tex]
[tex]12\times - \frac{5}{6}x^7y^2[/tex]
Multiply:
[tex]-\frac{5\times \:12x^7y^2}{6}[/tex]
[tex]-\frac{60x^7y^2}{6}[/tex]
Divide:
[tex]-10x^7y^2[/tex]
Answer:
the answer to your question is -10(x^7) (y^2)
if 18 more than twice a number is -10,what is the number?
Answers
Answer:
-14
Step-by-step explanation:
Let the number be x
[tex]2x + 18 = - 10 \\ 2x = - 28 \\ x = - 14[/tex]
2x. -18= -10 -18
2x= -28
X=-14
Solve for y.
8+4y= -8
Answers
Answer:
-4
Step-by-step explanation:
8+4y= -8
4y= -8 -8
4y= -16
divide both sides by the coeffient of the variable. in this case divide both sides by 4
y=-4
Answer:
y = -4
Step-by-step explanation:
8+4y= -8
4y = -8 -8
4y = -16
y = (-16) ÷ 4
y = -4
Find the sum. 5+(-7)= 0
Answers
5+(-7)=-2
i hope this helps :)
Answer:
That doesn't make sense! Do you have a picture of the problem?
Step-by-step explanation:
I need more info in order to give a better, more acurate answer!
\small \angle L and \small \angle M are supplementary, \small m\angle L=12x+45 and \small m\angle M=18x-30. Determine the measure of each angle. \small m\angle L= degrees \small m\angle M= degrees
Answers
Answer:
[tex]L = 111[/tex]
[tex]M = 69[/tex]
Step-by-step explanation:
Given
[tex]L = 12x + 45[/tex]
[tex]M = 18x - 30[/tex]
Required
Determine L and M
Since both angles are supplementary;
[tex]L + M = 180[/tex]
Substitute values for L and M
[tex]12x + 45 + 18x - 30 = 180[/tex]
Collect Like Terms
[tex]12x + 18x= 180 - 45 + 30[/tex]
[tex]30x= 165[/tex]
Divide both sides by 30
[tex]x = \frac{165}{30}[/tex]
[tex]x = 5.5[/tex]
Substitute 5.5 for x in [tex]L = 12x + 45[/tex] and [tex]M = 18x - 30[/tex]
[tex]L = 12 * 5.5 + 45[/tex]
[tex]L = 111[/tex]
[tex]M = 18 * 5.5 - 30[/tex]
[tex]M = 69[/tex]
6. During the school fundraiser, the 4th grade raised $2,124. The 5th grade raised $396 less than 4th grade. How much money did the 4th and 5th grades raise together?
Answers
Answer:
$3,852
Step-by-step explanation:
Total for 4th grade: 2,124
5th grade: raised 396 less
2,124-396= total amount 5th graders raised
2,124-396=1,728
2,124+1,728=3,852
They raised $3,852 dollars.
Answer: 3,852
there you go
Carlos is buying drinks to bring to a study group. The table shows some combinations of the drinks he might buy. If Carlos buys 7 bottles of water, how many bottles of lemonade will he buy?
Answers
find the diffrence between -2 and 7 on the number line
Answers
Answer:
9 units
Step-by-step explanation:
Calculate the absolute value of the difference, that is
| - 2 - 7 | = | - 9 | = 9 , or
| 7 - (- 2) | = | 9 | = 9
What is the answer??
Answers
Answer:
x = -2±i
Step-by-step explanation:
Select the answer choice showing the correct conversion of 2 miles to feet. There are 5280 feet in 1 mile.
Answers
Answer:
you need to provided the answer choices
Step-by-step explanation:
What is the area of the figure? I need help ASAP. I will mark brainlest!!
Answers
Answer:
Picture explains all, 252.
Step-by-step explanation:
Convert the fraction into a percentage.
1
7
10
=
%
Answers
Answer:
170%
Step-by-step explanation:
(6.42)-(-3.2) Btw I need to show my work...
Answers
Answer:
9.62
Step-by-step explanation:
Simplify the expression.
(6.42)+(-3.2)= 9.62
What is the value for X, Y, and Z?
Answers
Answer:
_________
z is 48
x is 48
y is 132
_________
Answer:
x+132=180 [ linear pair]
x=180-132=48
y=132[ opposite angles]
z=x=48 [ opposite angles]
if we add all these four angles we get 360 degree.
Mark it as brainliest!!!
A point has the coordinates (0, k).
Which reflection of the point will produce an image at the same coordinates, (0, k)?
Answers
Answer:
B
Step-by-step explanation:
I took the assignmen.
The reflection of point that will produce the image at same coordinate (0, k) is across the y - axis
We have a Point with coordinates (0, k).
We have to find the reflection that will produce the image at the same coordinate (0, k).
Consider a Point P (x, y). Find the image of the point across x - axis and y - axis.For a Point P [tex](x,y)[/tex] the image across -
x - axis is (x, -y).y - axis is (-x, y)We can use the above laws to find the reflection of point
For Point P(0,k) , the -
image across x - axis will be (0, -k).image across y - axis will be (-0, k), which is same as (0, k).Hence, the reflection of point that will produce the image at same coordinate [tex](0,k)[/tex] is across the y - axis.
To solve more questions on finding the reflection of a point, visit the following link -
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1
A line segment has the endpoints (-7,-4) and (9,8). What are the coordinates of the
midpoint of this line segment?
Answers
What does an arrow as an endpoint
imply for a function? How does it
effect your domain and range?
I
Answers
Answer:
Step-by-step explanation:
Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis
Answer:
It menas that it keeps going.
Step-by-step explanation:
If you have a line with an arrow at the end it means that the numbers keep on going. So say that you had a number line that ended at ten but there is an arrow, this means that there is more or less.
<- ->
10 less than ten 10, more than ten.
Nerissa has 5 pink bows,1 blue bow and 4 purple bows in a box. She will randomly choose 1 bow form the box.
What is the probability nerissa will choose a purple bow?
Answers
Joseph drove to Carly's house for dinner. He was away from his house for 2 hours. He spent 50 minutes at Carly's house. Driving to and from Carly's house he drove at a speed of 45mph. How far away from Carly does Joseph live?
Answers
Answer:
I'd say about 30 minutes away
Step-by-step explanation:
What is the surface area of a capri sun box with the length of 35cm width of 9 cm and a height of 12cm
Answers
Answer: 3780
Step-by-step explanation: 35 x 9 x 12= 3780
Answer:
3,780 cm
Step-by-step explanation:
L x W x H
1. A point is named or labeled using? 2. Three distinct points are collinear if ? 3. Three distinct points are coplanar if ? PLZ HELP
Answers
Answer:
1) A point P is named or labeled by using a coordinate pair, where the regular notation is:
P = (x, y).
Where x and y are the horizontal and vertical components.
2) Three distinct points are collinear if exists a line that passes through the 3 points.
3) Three distinct points are complanar if they are not collinear, this means that:
We can have two colinear points (so one line connects them) and another point outside that line.
Then the set of 3 points is coplanar.