Answer:
Step-by-step explanation:
The domain of a function is all the allowed x values that make the function defined. There is nothing to make this function undefined. So the domain is negative infinity to positive infinity. All those x values are in the domain. In order to show your work, just show yourself plugging in those numbers.
You get 9, 0, and 1
Answer:
All of them are in domain
Step-by-step explanation:
Ashley had a summer lemonade stand where she sold small cups of lemonade for $1.25 and large cups for $2.50. If Ashley sold total of 155 cups of lemonade for $265, How many cups of each type did she sell?
FJ= 24
JH = 3x-3
21. x = ?
can someone help asap please!!!
Answer:
[tex]\boxed {x = 7}[/tex]
Step-by-step explanation:
[tex]FJ[/tex] and [tex]JH[/tex] is half of the whole measurement of [tex]FH[/tex]. So, to find the value of [tex]x[/tex], you need to write an expression by using those measurements of both [tex]FJ[/tex] and [tex]JH[/tex]. Then, solve for [tex]x[/tex]:
[tex]FJ = 24[/tex]
[tex]JH = 3x - 3[/tex]
[tex]3x - 3 = 24[/tex]
-Solve:
[tex]3x - 3 = 24[/tex]
[tex]3x - 3 + 3 = 24 + 3[/tex]
[tex]3x = 27[/tex]
[tex]\frac{3x}{3} = \frac{27}{3}[/tex]
[tex]\boxed {x = 7}[/tex]
So, the value of [tex]x[/tex] is [tex]7[/tex].
Hi, how would I solve for Angle A without factoring? I don't know how to factor and always had trouble with it, but if someone can explain in-depth how to factor in this equation to find the measurement of angle A, that would be great.
If this figure was a parallelogram, then the opposite angles would be congruent. This would make angles B and D the same measure
angle B = angle D
x^2+20 = 7x+50
x^2+20-7x-50 = 0 .... get everything to one side
x^2-7x-30 = 0
(x-10)(x+3) = 0 ... see note below
x-10 = 0 or x+3 = 0
x = 10 or x = -3
Note: In this step is where the factoring occurs. To factor, we need to find two numbers that multiply to -30 which is the last term, and also add to -7 which is the middle coefficient. This is a trial and error process. You should find that -10 and 3 both multiply to -30 and add to -7. I suggest making a table as shown below (attached image) to list out all the possible choices.
Perhaps a much more efficient route is to use the quadratic formula.
-----------------
We found two possible solutions for x. If x = 10, then 7x+50 is 7(10)+50 = 120 which is an obtuse angle. If x = -3, then 7x+50 = 7(-3)+50 = 29 which is acute.
Assuming the diagram is drawn to scale, this means angle D is obtuse and we'll go with x = 10 and 7x+50 = 120
Angles A and D add to 180 degrees. This is true for any pair of adjacent angles in a parallelogram.
A+D = 180
A+120 = 180
A = 180-120
A = 60-----------------
Final Answer: Angle A = 60 degreesThis answer is based on the assumption that the diagram is drawn to scale and that this quadrilateral is a parallelogram.
Answer:
[tex]\angle A=60\textdegree[/tex]
Step-by-step explanation:
So we have the following parallelogram and we wish to solve for ∠A.
To do so, we will need to solve for x first. Look carefully at the parallelogram...
Notice that ∠A and ∠D are consecutive angles. In other words:
[tex]\angle A+\angle D=180[/tex]
Since we have an equation for ∠D, substitute:
[tex]\angle A+7x+50=180[/tex]
Notice that ∠A and ∠B are also consecutive angles. So:
[tex]\angle A+\angle B=180[/tex]
We know the equation for ∠B. Substitute:
[tex]\angle A+x^2+20=180[/tex]
Since both equations equal 180, we can set them equal to each other:
[tex]\angle A+7x+50=x^2+20+\angle A[/tex]
Let's subtract ∠A from both sides. This gives us:
[tex]7x+50=x^2+20[/tex]
Now, we can solve for x. This is a quadratic, so let's move all the terms to one side. To start off, let's subtract 50 from both sides:
[tex]7x=x^2-30[/tex]
Now, let's subtract 7x from both sides:
[tex]0=x^2-7x-30[/tex]
Solve for x. We can factor.
Here's the trick to factoring. If we have the following:
[tex]0=ax^2+bx+c[/tex]
The we will need to find two numbers, p and q, such that:
[tex]p+q=b\text{ and } pq=ac[/tex]
In our equation, a is 1, b is -7, and c is -30.
So, we want two numbers that sum to -7 and multiply to (1)(-30)=-30.
We can use -10 and 3. -10+3 is -7 and -10(3) is -30. So, let's substitute our b term for -10x and 3x. In other words, we have:
[tex]0=x^2-7x-30[/tex]
Substitute -7x for 3x-10x. This gives us:
[tex]0=x^2+3x-10x-30[/tex]
This is equivalent to our old equation.
Now, we can factor. Factor out a x from the first two terms:
[tex]0=x(x+3)-10x-30[/tex]
And factor out a -10 from the two last terms:
[tex]0=x(x+3)-10(x+3)[/tex]
Since the expressions within the parentheses are the same, we can use grouping to acquire:
[tex]0=(x-10)(x+3)[/tex]
Note that this is essentially the distribute property. If we distribute, we will get the same as above.
Zero Product Property:
[tex]x-10=0\text{ or }x+3=0[/tex]
Solve for x:
[tex]x=10\text{ or } x=-3[/tex]
So, we have two cases for x. Each case will yield a different answer for ∠A.
Case I: x=10
Use our original equation of:
[tex]\angle A+7x+50=180[/tex]
Substitue 10 for x:
[tex]\angle A+7(10)+50=180[/tex]
Multiply:
[tex]\angle A+70+50=180[/tex]
Add:
[tex]\angle A+120=180[/tex]
Subtract 120 from both sides:
[tex]\angle A=60\textdegree[/tex]
So, in our first case, ∠A is 60°
Case II: x=-3
Again, same equation:
[tex]\angle A+7x+50=180[/tex]
This time, substitute -3 for x. This yields:
[tex]\angle A+7(-3)+50=180[/tex]
Multiply:
[tex]\angle A-21+50=180[/tex]
Add:
[tex]\angle A+29=180[/tex]
Subtract 29 from both sides:
[tex]\angle A=151\textdegree[/tex]
So, in our second case, ∠A is 151°
However, 151° doesn't seem likely with how the figure is drawn.
Therefore, our final answer is 60°.
And we're done!
Edit: Fixed Incorrect Answer
Rita's water tank contains 7.8 gallons of water. Rita will begin filling her water tank at a rate of 2.1 gallons per minute.
Wendy's water tank contains 97.8 gallons of water. Wendy will begin draining her water tank at a rate of 0.9 gallon per minute.
After how many minutes will both water tanks contain the same amount of water?
A 25 min
B 30 min
C 35 min
D 75 min
Answer:
B 30 min
Step-by-step explanation:
i need help what happens when the food goes down the mouth where does it go
PLZZ HELP WILL MARK BRAINLIEST
write a different expression that has the same quotient as
(-3)/8 and (3/8)
Answer:
-3/8= -6/16=-9/24=-12/32=-15/40....
3/8=6/16=9/24=12/32=15/40=18/48=21/56.....
Do you still need help if so I can solve it for you
If it rains, then the game will be canceled
Hypothesis:
Conclusion:
Hypothesis = It rains
Conclusion = The game is canceled
=====================================================
Explanation:
The general format for a conditional is "If P, then Q".
P is the hypothesis and Q is the conclusion. They are placeholders.
In this case
P = It rainsQ = The game is canceledSome textbooks will write [tex]P \to Q[/tex] to indicate "if P, then Q"
For which data set is a linear regression most reasonable? A. A set of nine data pairs with a correlation coefficient r = –0.4 B. A set of five data pairs with a correlation coefficient r = 0.3 C. A set of four data pairs with a correlation coefficient r = –0.8 D. A set of six data pairs with a correlation coefficient r = 0.6
Answer:
Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.
Step-by-step explanation:
Linear regression is a primary type of predictive analysis. It describes does a variable does a useful job. Which variable is significant.
Set of nine data pairs with correlation coefficient r = -0.4
Set of five data pairs with correlation coefficient r= 0.3
Set of four data pairs with correlation coefficient r= -0.8
Setoff six data pairs with correlation coefficient r = 0.6
A setoff four data pair with correlation coefficient r = -0.8 is the valid data set.
Because
r = -0.8
r2 = 0.64,
This is very close to 1 as compared to any other data pair.
Hence, Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.
Answer:
C "a set of four data pairs with a correlation coefficient r = –0.8"
Step-by-step explanation:
Three pizzas are cut so each person at the table receives ¼ pizza. How many people are at the table?
Answer:
12 people!
Step-by-step explanation:
each pizza is cut into 4 pieces, and there are 3 whole pizzas. 4 times 3= 12!
Answer:
12
Step-by-step explanation:
Since we have 3 pizzas, and we know that the pizzas are cut 1/4, We can multiply 3 to 4. We should get 12!
Deeper explanation:
We have 3 pizzas and they're cut 1/4. Draw 3 pizzas cut by fourths. Now count the pizza slices. We have 12 slices!
4. The point
5 1/3 units from A and
2/3
units from B
Given :
A point x whose distance from A is 5 1/3 units.
distance between x and B is 2/3 units.
To Find :
Distance between A and B if they both are on left side of straight line from x.
Solution :
Let distance between A and B is d :
[tex]d=|A-B|\\\\d=|5\dfrac{1}{3}-\dfrac{2}{3}|\\\\d=|\dfrac{16}{3}-\dfrac{2}{3}|\\\\d=\dfrac{14}{3}\\\\d=4\dfrac{2}{3}\ units[/tex]
Therefore, distance between A and B is 4 2/3 units.
Hence, this is the required solution.
Pls help solve step by step... I will mark branliest.
Answer:
52 stickers
Step-by-step explanation:
I hope that this helps you. :)
can someone please answer this
Answer:
a. d/2 = r; b. 65 miles per hour
Step-by-step explanation:
d = 2r
d/2 = r
130/2 = r
65 = r
a=(1/2)bh =? pls help
Answer:
this is the formula for area of a trapezoid
Answer:
that formula is the area of a triangle
Step-by-step explanation:
I'm not sure what you are asking but I hope it helps.
Amy baked 114 brownies for a bake sale. She sold bags of brownies with
each bag containing 6 brownies. After the bake sale, she had 18 individual
brownies left. Which of the following equations represent b, the number
of bags of brownie Amy sold? *
O 114 = 185 - 6
18 = 6b +114
18 = 114 - 6b
Answer:
18=114-6b
Step-by-step explanation:
what is 10000*60??????????
Answer:
600000
Step-by-step explanation:
Answer:
600000
Step-by-step explanation:
10000×60
10000
× 60
---------------
1
× 6
---------------- (Eliminate all the zeros and than add them to the end of 1 × 6)
600000
-------------------
Hope this was helpful!!!!
help me asap please
Answer:
120 f
Step-by-step explanation:
A marathon runner ran 15 miles in 120 minutes. What is the ratio of minutes per mile?
Answer:
Step-by-step explanation:
Answer: So that means it would take him 7.9 minutes to run a mile
Step-by-step explanation:
Divide your run distance by your run time.
If you ran 2.5 miles and you ran for 20 minutes: 2.5 mi ÷ 20 min = 0.125 miles per minute. So the answer would be
15 miles= 79200
79200 divided by 120=660
PLEASE HELP ILL AWARD BRAINLIEST!!
Answer:
The second option with the ordered pairs.
Step-by-step explanation:
A function is basically when there is one and only one output for every input. Basically meaning there is only one x for every y. If you really want to learn more about functions, go to khan academy, they can explain it better than I can.
at a pizza place there are 4 diffrent sizes of pizza(small medium large and extra large. and 8 diffrent toppings (chicken, peporoni mushrooms peppers tomatos onions puneapple ham) whats the probability of ordering a medium pizza with peporoni
Answer:
1/32(I'm not sure if this is it)
Step-by-step explanation:
The total possible outcomes have 32 different outcome and there's only one that is medium with peporoni
How long will your trip take if you travel 350m/s at a speed of 180s?
Answer:
divide 350 m/ by 180s and you get 1.9 hours
Which is equivalent to the expression 2 + (-3) ?
Answer:
-1
Step-by-step explanation:
the hypptenuse of a right triangle ABS, lince segment AC, measures 13 cm. The legth of line segment BC s 5 cm hat is the approximate differnee between m angle c and m angle a
Answer:
The answer is mc 2.75 degrees and ma is 80 degrees.
Step-by-step explanation:
Solve y/-4 + 5 = 15. 80 -80 40 -40
Answer:
y = -40
Step-by-step explanation:
y/-4 + 5 = 15
y/-4 = 10
y = -40
Hey there!☺
[tex]Answer:\boxed{y=-40}[/tex]
[tex]Explanation:[/tex]
[tex]\frac{y}{-4}+5=15[/tex]
In our first step, we will simplify both sides of the equation:
[tex]\frac{x-1}{4}y+5=15[/tex]
Now we will subtract 5 from both sides:
[tex]\frac{-1}{4}y+5-5=15-5\\\frac{-1}{4}y=10[/tex]
Now in our last step, we will multiply both sides by 4/(-1):
[tex](\frac{4}{-1})\times(\frac{-1}{4}y)=(\frac{4}{-1})*(10)\\ y=-40[/tex]
y=-40 is your answer.
Hope this helps!☺
Suzie went to a candy shop. The candy shop has a sign that shows the cost of the candies at the shop. The sign is below:
Suzie bought 2 Snickers, 3 Skittles, and 5 Reese's Pieces. If she paid $20 to the shop, how much change would she get back?
Candy Cost per candy (in dollars)
Snickers 0.75
Skittles 1.00
Reese's Pieces 1.40
Answer:
i belive she will have 11.90 i think
Step-by-step explanation
Answer:
Step-by-step explanation:
.75 * 2= 1.50
1.00 * 3 = 3.00
1.40 * 5 = 7.00
7.00+3.00+1.50=11.50
20.00 - 11.50 = 8.50
5/6−1/3÷4= need to find answer
Answer:
Step-by-step explanation:52.75
Help plz due in a hour
Consider the reflection of ΔABC across the line of reflection, Line P T. 2 right triangles are shown. Line P T is the line of reflection. Line segment A prime A has a midpoint at point S. Line segment B prime B has a midpoint at point R. Line segment C prime C has a midpoint at point Q. Which statements must be true? Check all that apply. A'A = C'C C'Q = QC Line P T⊥ A'A C'C ⊥ B'B A'A || B'B m∠TRB = 90°
Answer:
B) C'Q=QC
C) PT⊥A'A with the line on top
E) A'A|| B'B
F) m∠TRB = 90°
Step-by-step explanation:
Answer:
it is B,C,E,F
PLEASE HURRY which of the following points on the number line below best approximates the value of negative square root of 7.
Answer:
C
Step-by-step explanation:
The value of negative square root of 7 can be determined by either using a calculator or even just solely thinking about it. If we think about, negative square root of 4 is -2 and negative square root of 9 is -3. Therefore, the answer is C. We can also use a calculator to confirm the answer. -√7 is approximately -2.65 and therefore is a value between -2 and -3 which is point C.
The point C (-2.4) best approximates the value of negative square root of 7 on the given number line.
What is Number system?A number system is defined as a system of writing to express numbers.
The square root of 7 is approximately 2.65, so the negative square root of 7 is approximately -2.65.
Among the given points on the number line, the point that is closest to -2.65 is point C, which is at -2.4.
Therefore, point C (-2.4) best approximates the value of negative square root of 7 on the given number line.
To learn more on Number system click:
https://brainly.com/question/22046046
#SPJ3
Help me answer first question
Answer:
answer is 12
Step-by-step explanation:
Answer: answer is B
Step-by-step explanation:
Calculate the following using proper number of significant
figures:
0.0702 - 1.35
a 0.0400
b 0.0520
C 0.0450
d 0.0500
ed a Hint
Answer:
0.0520
Step-by-step explanation:
In this expression, we conclude that 1 is the least significant figures after decimal in this problem. The answer will be 0.0520.
What is Significant figures?Significant figures is the figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
The rule apply for the multiplication and division is that the least number of significant figures in any number of the problem determines the number of significant figures in the answer.
The rule apply for the addition and subtraction is that the least precise number present after the decimal point determines the number of significant figures in the answer.
The given expression is: 0.0702 - 1.35
0.0702 - 1.35
= 0.0520
In this expression, we conclude that 1 is the least significant figures after decimal in this problem.
The answer will be 0.0520.
Learn more about the concept here;
https://brainly.com/question/13055274
#SPJ2
