Answers
Problem 1
Answer: C) No solution
---------------------------
Explanation:
We have z = -4 and 4z = -4 at the same time. Solving 4z = -4 leads to z = -1
So in effect we have z = -4 and z = -1 at the same time, but this is a contradiction. A variable can only hold one number at a time.
======================================================
Problem 2
Answer: C) Infinitely many solutions
---------------------------
Explanation:
The two equations are equivalent. You can prove as such by isolating 2y in the first equation.
5x = 8-2y
5x+2y = 8
2y = 8-5x
2y = -5x+8
-5x+8 = 2y
This shows the first equation is equivalent to the second, and vice versa. They both graph the same line. Any point along the line is a solution. So that's why there are infinitely many of them.
======================================================
Problem 3
Answer: Choice A) [tex]-6 < y \le 3[/tex]
---------------------------
Explanation:
The range is the set of the possible y values. We're concerned with every y coordinate of each (x,y) solution. So we only focus on the shaded region.
The dashed line means we exclude the boundary. It's an electric fence we cannot touch. So y > -6 or -6 < y describes part of the range
The other part is [tex]y \le 3[/tex] since y = 3 is the when the highest point occurs.
So writing [tex]-6 < y \le 3[/tex] describes all possible y values of each (x,y) solution in the shaded region.
Related Questions
Please explain how to solve: 35.15 x 3.7
Answers
Answer:
multiply
Step-by-step explanation:
you multiply them together to get the answer. I do not know how else to explain really.
The sum of two numbers is (−12). What two numbers could you have?
Answers
Answer:
you could have something like umm -36 + 30 It also gives the answer as -12 so I guess you could choose any two numbers that add up to -12
What are the two meanings of division for x and y?
Answers
Help me please please please
Answers
Answer:
I think it would 12 and 14
How do I find the value ?
Answers
decimal : 4.629630
3 times what equals -18
Answers
Answer:
-6
Step-by-step explanation:
Let "what" be termed as "x".
Set the equation:
3 * x = -18
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Divide 3 from both sides:
(3x)/3 = (-18)/3
x = -18/3
x = -6*
*Note: When you divide a negative number with a positive number, your answer will be negative.
-6 is your answer.
~
The value of number which is 3 times to -18 is -6 .
Given,
3 *x = -18
So,
Let "what" be termed as "x".
Form the equation including the variable x ,
3 * x = -18
Isolate the variable, x.
Note the equal sign, what you do to one side, you do to the other. Divide 3 from both sides:
(3x)/3 = (-18)/3
x = -18/3
x = -6
-6 is the required answer .
Know more about equations,
https://brainly.com/question/20906227
#SPJ6
Find the interest earned on the account
$970 at 4 1/4% simple interest for 2 years
Answers
Kirin is saving money to enter a craft fair with his new jewelry business. The entry fee is $150. He sells bracelets for $4 each and he has saved up $36. so far. What is the least number of bracelets he would need to sell to afford the entry fee?
Answers
Answer:
28.5 equals ab 29 bracelets
Step-by-step explanation:
Answer:
29 bracelets
Step-by-step explanation:
The first thing you (always) need to do is highlight important details. Some things you should highlight are: The entry fee is $150, He makes $4 off of each bracelet, and that he has $36 so far. We know that 4 times 10 is 40. if we add 40+ the 36, we get 76. now we need 74 more dollars, so let's do: 74 divided by 4 = 18.5. since we can't do that, we add one more bracelet to make it 19. This makes sure we get enough money for the fee. All we have to do now is add is together. 10+19= 29 bracelets
r(x)=2[tex]\sqrt{x}[/tex] s(x)=[tex]\sqrt{x}[/tex]
(rs)(4)
Answers
Answer:
Im not sure
Step-by-step explanation:
but I advise you use a calculator or as an teacher
1.If mZA = 4x+12 and x = 15, is ZA acute, obtuse, or right? Explain or justify your answer.
2.Given: ZBAM is a right angle. If mZBAM = 4x + 22, then solve for the value of x.
Answers
9514 1404 393
Answer:
acute17Step-by-step explanation:
1. Put the value of x in the expression and see what the angle measure is.
m∠A = 4x +12 = 4(15) +12 = 60 +12 = 72
The angle is less than 90°, so is acute.
__
2. The measure of a right angle is 90°, so you have ...
4x +22 = 90
4x = 68 . . . . . subtract 22; next, divide by 4
x = 17
When I am rounded to the nearest ten, I am 80. The digit in my tens place is 5 more than the digit in my ones place. Who am I?
Answers
Answer:
81.6
Step-by-step explanation:
8 divided by 5 is 1.6.
Hope this helps! Sorry if it is incorrect :(
The times for three runners in a 100 yard dash are 9.85 s, 9.6 s and 9.625 s. What is the winning time?
Answers
Answer:
9.6 is first
Step-by-step explanation:
9.6 , 9.625, then 9.85 is the order finished the race, the larger the time (number) the later they crossed the finish line
Hope this helps : )
lim x>-1 x^2-x-2/x+1
Answers
Answer:
-3
Step-by-step explanation:
If we directly evaluate the function at -1, we get 0/0, meaning we may still have a limit to find.
In this case, factoring the polynomial at the top would be helpful.
The polynomial can be factored to (x+1)(x-2), so the function would now turn out to be (x+1)(x-2)/(x+1)
The (x+1) cancel out, leaving you with (x-2), which you can directly evaluate by plugging in x as -1:
-1-2 = -3
Quick disclaimer: the function is still undefined at -1; it's just that the function gets closer and closer to -3 as you approach -1.
I hope this helped you.
Triniti had $500 in a savings account at the beginning of the summer. She withdraws $25 each week for food, clothes, and movie tickets. Write an inequality that represents Triniti’s situation and use w for the number of weeks. How many weeks can Triniti withdraw money in her account?
Answers
Answer:500-25x
Step-by-step explanation:
4hundred 38tens and 18ones. What number am I?
Answers
Answer:
798
Step-by-step explanation:
to get the answer you add 400 + 380 + 18
Answer:
400 + 380 + 18 = 798 :)
PLEASE SOLVE! IT'S REALLY EASY, BUT MY BRAIN IS DEAD AT THE MOMENT.
Answers
Answer:
What is the question???
Step-by-step explanation:
the cost of the food that was originally 300 php was reduced to 180 php. what was the percent of the reduction
Answers
Answer: 60% of 300 is 180
PLZ SOLVE FAST FOR 800 ROBUX TOO
Answers
Answer:
[tex] x = 22.5[/tex]
[tex]180 - 4x + 2x = 6x \\ x = 180 \div 8 = 22.5 \\ so \: x = 22.5[/tex]
Answer:
22.5
Step-by-step explanation:
username Maxracker1
Vanessa solved 244 problems in a recent Marathon. She solved four times as many problems as her friend Bethany. What equation could be used to find the correct solution?
A) 244 = 4 B
B) (244) 4 = B
C) 244 B = 4
D) 244 + 4 = B
Answers
Answer:
b
Step-by-step explanation:
Answer:
b) 244*4= b
Step-by-step explanation:
Question
Solve the following system of equations.
- x² – 3y² = - 12
–4x² - y² = -37
Provide your answer below:
I
I need the exact answer please. There are 8 sets of answers for this question what are they fill in the question mark. I hope I’ll get my answers quickly. Thank you
(?,?),(?,?),(?,?),(?,?)
Answers
Answer:
(3,1) (3,-1) (-3,1) (-3,-1)
Step-by-step explanation:
9. Tony bought x boxes of cookies to bring to a party. Each box has 28 cookies. He decides
to keep 2 boxes for himself. He brings 84 cookies to the party.
Which equation can be used to find the number of boxes Tony brought to the party?
A. 2x - 28 = 84
B. 28x - 2 = 84
C. 28x – 56 = 84
D. 56 – 28x = 84
Answers
The correct answer is C. 28x – 56 = 84
Explanation:
Writing an equation using a description or situation involves including all the factors mentioned and relating these appropriately through mathematical symbols. In the case presented, the correct equation is 56 – 28x = 84. This is because this equation includes the total of boxes Tony took to the party 84 and this has been correctly included after the symbol =. Also, the total of boxes is equal to the boxes tony bought each with 28 cookies, which can be represented as 28x (x represents the value of boxes that multiplied by 28 leads to the total of cookies) minus the cookies Tony bought (2 boxes each with 28 cookies). This makes the final equation to be 28x – 56 = 84.
please help i need this urgently
Answers
Answer:
Angle YZX = 19.7 degrees
This is the same as saying angle Z = 19.7 degrees
====================================================
Explanation:
Since there are only three letters, and nothing else, we can refer to "angle YZX" as "angle Z" to shorten things. The middle letter is what determines the vertex of the angle.
With Z as the reference angle, side XY = 7.5 is the opposite side. It's the leg furthest from the reference angle. SIde ZY = 22.3 is the hypotenuse. The hypotenuse is always opposite the 90 degree angle.
We'll use the sine rule since it connects the opposite and hypotenuse
sin(angle) = opposite/hypotenuse
sin(Z) = XY/ZY
sin(Z) = 7.5/22.3
sin(Z) = 0.336323
Z = arcsin(0.336323)
Z = 19.653008983888
Z = 19.7
In this case, rounding to 3 sig figs means rounding to 1 decimal place (the first two digits are part of the whole number while the last digit is the decimal portion).
Make sure your calculator is in degree mode. The notation "arcsin" refers to arcsine which is the same as inverse sine. Your calculator would likely have the button [tex]\sin^{-1}[/tex] to indicate inverse sine.
Answer:
Degrees: 19.7
Radians: 0.343
Step-by-step explanation:
First, let x = angle YZX.
You can solve this using sine (which as a reminder, is opposite over hypotenuse):
sin(x) = 7.5/22.3
x = arcsin(7.5/22.3)
Now you can grab out a calculator and evaluate.
If it's in degrees: 19.7
If it's in radians: 0.343
(Remember to round to 3 significant figures like the problem said)
I hope this helped you.
The local hamburger shop sold a combined total of 552 hamburgers and cheeseburgers on tuesday there werw 52 more cheeseburgers sold than hamburgers how many hamburgers were sold on tuesday
Answers
Answer:
250 Hamburgers
302 cheeseburgers
Step-by-step explanation:
you sold X number of hamburgers
and x+52 number of cheeseburgers
total was 552
make an equation x+x+52=552
so 2x+52=552
now solve for x
x=250
to find cheeseburgers
(250)+52=302
hamburgeres =x=250
Are the given lines parallel? Explain your reasoning.
3. y = 2, y = -4
Answers
Expression above should be further simplified for which value of X?
Answers
Answer:
D. 329
Step-by-step explanation:
119 can be expressed as the factors of 2 prime numbers: 7 and 17.
There would be no need to further simplify the expression if x does not have one of these factors.
We can check that D is the only one that has one of these factors: 7, since 329/7 = 47.
I hope this helped.
2 2/5 x 5/7 in simplest form
Answers
Answer:
1 5/7
Step-by-step explanation:
2 2/5 x 5/7
= 12/5 x 5/7
= 12/7
1 5/7
Pang dagdag points niyo.... sagutan niyo nalang ng tamang sagot, yung tamang sago i high rate ko......
2×2×4÷5-8+10=?
Answers
Answer:
26/5
Step-by-step explanation:
(2)(2)(4)/5 −8+10
(4)(4)/5−8+10
=16/5−8+10
=−24/5+10
=26/5
Alternate form
5.2
The answer :
26/5
The explanation :
Slope worksheet. Please help me!!!
Answers
Slope= y2-y1/x2-x1
Question 4: (-1,-2) and (1,0)
-1 is x1, -2 is y1
1 is x2, 0 is y2
0- -2=2 (0 subtract -2, two minus signs equal to an addition sign.)
1- -1=2
2/2= 1
The slope is 1.
2. $3 to $2
Find each percent of change
Answers
Answer:
33.33%
Step-by-step explanation:
2/3 = is 33.33%
(5x^2)^3+16y divide 4y for x=2andy=3
Answers
Answer:
30 2/3
Step-by-step explanation: