Which of the following could be a solution to x^2 = 400
a. -200
b. -20
c. 40
d. 100
Answers
Answer:
a. -200
Step-by-step explanation:
Square root both sides:
x = +/- 200
x = -200, 200
x = -200
Answer:
b
Step-by-step explanation:
Given
x² = 400 ( take the square root of both sides )
x = ± \(\sqrt{400}\) = ± 20
Thus x = - 20 is a solution of the equation → b
Related Questions
I need help with this question, I'm not very good at math and all help is appreciated!
Answers
Answer:
A
Step-by-step explanation:
We can solve for H by isolating it on one side of the equation, as follows:
J/H - I/H = G
Taking H as the common denominator:
(J - I)/H = G
Multiplying both sides by H:
J - I = GH
Adding I to both sides:
J = GH + I
Dividing both sides by G:
H = (J - I)/G
So the answer is
(A)
H = (J - I)/G.
Answer: A
Step-by-step explanation:
\(\frac{J}{H} = G + \frac{I}{H}\) >Since you are solving for H bring I/H to the other side
by subtracting I/H from both sides
\(\frac{J}{H}- \frac{I}{H} = G\) >There is a common denominator so you can
combine the fractions
\(\frac{J-I}{H} = G\) >Multiply both sides by H or cross multiply whichever
way your mind things about how to get H on top
\(J-I = G(H)\) >Divide both sides by G
\(\frac{J-I}{G} = H\) >Answer is A
Can someone please help with the Surface Area of this. I need the right answer so that i wont get murdered by my mom and so i can stay alive longer
Answers
Answer:
32
Step-by-step explanation:
you use different formulas on different sides. bh, 1/2bh
How many times does 15 go int 135? who ever gets it right gets 500 points
Answers
Answer:
9 times
Step-by-step explanation:
The number 15 multiplied to the number 9 which gives the value 135.
To find the that how many 15 is to get 135, division should be performed.
So, dividing 135 by 15 gives:
= 135 ÷ 15
15 | 135 | 9
135
_______
0
Thus, the quotient is 9.
Therefore, 15 goes into 135 exactly 9 times.
Learn more about Division here:
https://brainly.com/question/2273245
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What is the angle made by the hour hand and the minute of the clock at 8:57
Answers
Answer:
85 degrees
Step-by-step explanation:
A gift shop sells rectangular glass dishes in different sizes. Some of the dimensions are given in the table. Fill in the missing dimensions.
Answers
Answer: 3, 4, 5, 5, 4
Step-by-step explanation: For the 18 times 3x2 which is 6 now 6x?= 18 so the ? is 3
3x2=18 6x?=18 (3)
3x2=6 6x?=24 (4)
3x2=6 6x?=30 (5)
4x2=8 8x?=40 (5)
4x3=12 12x?=48 (4)
Answer: 3, 4, 5, 5, 4
Step-by-step explanation: 3 x 3 = 9. 9 x 2 = 18. The length in inches is 3 inches. 2 x 4 = 8. 8 x 3 = 24. The width in inches is 4 inches. 3 x 2 = 6. 6 x 5 = 30. The height in inches is 5 inches. 5 x 4 = 20. 20 x 2 = 40. The length in inches is 5 inches. 4 x 3 = 12. 12 x 4 = 48. The height in inches is 4 inches.
The distance between Franklin City and Williamsville on a map is 3.2 inches.
If the scale of the map is 1 inch = 15 miles, how many miles apart are the two cities?
Answers
Answer:
15 miles .....
Step-by-step explanation:
Brainlest
NED HELP NOW 69 POINTS
Answers
Answer:
c
Step-by-step explanation:
I say c because i couldn't decide between c or d.
A project will take a total of 720 person-days to complete. If the project must be completed in 30 days, how many people must be employed? PLEASE HURRY
Answers
Answer:
192 hours per day / 8 hours per person per day = 24 people
Step-by-step explanation:
Assuming each person works for 8 hours a day, the total number of hours needed to complete the project is:
720 person-days x 8 hours = 5,760 hours
To complete the project in 30 days, the total number of hours needed per day is:
5,760 hours / 30 days = 192 hours per day
can someone help? im not sure about this questons and its getting me so stressed out :( pls help :(
Answers
Answer:
Lets start:
Picture 1:-
1. Length of EH= 12cm
2. Angle G= 55 degrees
Picture 2:-
1. Scale factor= 1/4 (I'm not sure about this but this is what I think it is ;-;)
2. Value of y= 28 cm
Picture 3:- [Picture 3 is cropped so I'm guessing its the last one so imma answer those questions :D]
1. Scale factor= 5 (Again I'm not sure but its my best guess)
2. Value of z= 5
Picture 4:-
1. Scale factor= 4 (I'm pretty sure you know that my scale factor answers are guesses so yea ;-;)
2. Value of b= 12
Step-by-step explanation:
Since i can't add links in answers you can watch:
Similar figures
-By The Organic Chemistry Tutor
It'll help you understand how we solve these questions
Well anyways i hope this clears your concepts :D
Answer:
Step-by-step explanation:
EH is 12cm as the shape has been enlarged by scale factor two (all sides have been multiplied by 2).
Angle G remains the same at 55 degrees.
PART A
Scale factor for the triangle = 1/4
Value of y = 28cm
3) z = 5, scale factor = 5
SIMILAR RECTANGLES:
Scale factor = 4
Side b = 12cm
Hope these answers work out for you
For five days, Diego recorded the lengths, in minutes, of his walk to school. The mean for his data is 11 minutes. Determine which data set below is Diego’s, and prove that your choice is correct.
Answers
Data Set A: 9, 11, 13, 10, 12
Data Set B: 8, 10, 12, 14, 16
Data Set C: 10, 10, 10, 10, 10
Data Set D: 11, 11, 11, 11, 11
To find the mean, we sum up all the values in each data set and divide by the number of values:
Data Set A: (9 + 11 + 13 + 10 + 12) / 5 = 11 minutes
Data Set B: (8 + 10 + 12 + 14 + 16) / 5 = 12 minutes
Data Set C: (10 + 10 + 10 + 10 + 10) / 5 = 10 minutes
Data Set D: (11 + 11 + 11 + 11 + 11) / 5 = 11 minutes
Comparing the mean of each data set to 11 minutes, we can see that only Data Set A and Data Set D have a mean of 11 minutes. However, to prove that our choice is correct, we need to analyze the individual values in the data set.
In Data Set A, we can observe that the values are relatively close to 11 minutes, with some values slightly above and below. This variation suggests a realistic scenario where Diego's walk to school might take slightly different amounts of time each day.
In Data Set D, all the values are exactly 11 minutes. While it is not impossible for Diego's walk to consistently take exactly 11 minutes each day, it seems less likely than having some variation in the durations.
Based on these observations, we can conclude that the most plausible data set for Diego is:
Data Set A: 9, 11, 13, 10, 12
This data set has a mean of 11 minutes and exhibits a realistic variation in walk durations, making it the most likely choice for Diego's recorded lengths.
The length of a rectangle is 5/2 units greater than twice its width. If its width is w, which expression gives the perimeter of the rectangle in terms of w?
A.
2(5/2w) + w
B.
5/2w + w
C.
3w + 10/2
D.
6w + 5
Answers
Width = w
Length = 2w + 5/2
Perimeter = 2(Length + Width)
Perimeter = 2( w + 2w + 5/2)
Perimeter = 2(3w + 5/2)
Perimeter = 6w + 5
-----------------------------------------------------
Answer: The perimeter is 6w + 5 (Answer D)
-----------------------------------------------------
Answer:
6w+5
Step-by-step explanation:
If width=w then twice the width is 2w and 2w+5/2 is 5/2 units greater than twice the width. The perimeter is 2(width+length)=2(w+2w+5/2)=2(3w+5/2)=6w+5.
How does the graph of g(x) = 2^x+3 differ from the graph of f(x) = 2^x ? **WILL BE GIVING BRAINLIEST**
Answers
Answer: 3 units up
Step-by-step explanation:
The 2^x is the same, but the first equation is +3 (y-intercept), so it is translated 3 units up.
Which systems are most responsible for removing unwanted substances from the body?A.nervous and skeletal B.respiratory and urinary C.digestive and endocrine
D.circulatory and muscular
Answers
Answer:
c
Step-by-step explanation:
50 points for this i really need help
Answers
Because it’s showing that both the lines are 120
Answer:
A
Step-by-step explanation:
It shows 120 for both the sides of the angle, which makes it parallel.
B is wrong because they don't have the same angle measure.
C is wrong because they don't have the same angle measure.
D is also wrong, because it shows both the measures of angle A, and you don't know what angle B is.
Hope this helps!
Please put me as Brainliest.... if you want
A total of $8000 is invested in 2 funds paying 4% and 5% annual interest. The combined annual interest is $350. How much of the $8000 is invested in each fund? Please show work!!
Answers
Answer:
$5000 and $3000
Step-by-step explanation:
x = money invested in the first fund
y = money invested in the second fund
first equation: 0.04x + 0.05y = 350
4x + 5y = 35000
second equation: x + y = 8000
x = 8000 - y
Plug in x into the second equation:
4(8000 - y) + 5y = 35000
Solve:
32000 - 4y + 5y = 35000
y = 3000
x = 8000 - y
x = 8000 - 3000
x = 5000
$5000 and $3000
Hope this helps!
Answer:
$3000.
Step-by-step explanation:
$Po invested at 4%.
$(8000-Po) invested at 5%
Po*0.04*1 + (8000-Po)*0.05*1 = 350.
0.04Po + 400 - 0.05Po = 350,
Po = $5000.
8000-Po = 8000-5000 = $3000.
Hope this helps :)
-ilovejiminssi♡
Adrian is throwing a ball into a pail. With 50 attempts, the ball goes into the pail and stays 8 times, goes into the pail and bounces out 6 times, and misses the pail 36 times. If Adrian throws the ball again, what is the probability of each outcome?
Probability the ball goes into the pail and stays =
Probability the ball goes into the pail and bounces out =
Probability the ball misses the pail =
Answers
The probability the ball goes in to the pail and bounces out is 12%
The probability the ball misses the pail is 72%
STEPS:
Divide each number by 50.
36 divided by 50: 0.72
6 divided by 50: 0.12
8 divided by 50: 0.16
Remove the 0’s from the numbers
0.72 -> 72
0.12 -> 12
0.16 -> 16
We want to make sure that all these numbers equal 100 because 100% is 50 in this equation.
12 + 16 + 72 = 100
Because those numbers equal 100, 50 is equal to 100%
Hope this helps!
Answer:
The approximate probability that the ball goes into the pail and stays is 8/50 or 4/25.The approximate probability that the ball goes into the pail and bounces out is 6/50 or 3/25. The approximate probability that the ball misses the pail is 36/50 or 18/25.Step-by-step explanation:
Experimental probability is the ratio of the number of times an event occurs to the total number of trials or times the activity is performed. It is based on the results of an experiment or a simulation. For example, if you toss a coin 10 times and get 7 heads and 3 tails, the experimental probability of getting heads is 7/10 = 0.7. This may not match the theoretical probability of getting heads, which is 1/2 = 0.5, because of random variation or error. The more trials you perform, the closer the experimental probability will get to the theoretical probability.
To find the probability of each outcome, we need to divide the number of times the outcome occurred by the total number of trials. Using the given data, we can calculate the probabilities as follows:
The probability the ball goes into the pail and stays = 8/50 = 0.16 The probability the ball goes into the pail and bounces out = 6/50 = 0.12 The probability the ball misses the pail = 36/50 = 0.72We can check that these probabilities add up to 1, which means they are valid.
9x + 9x − 21 = 33
Please solve for x C:
Answers
Answer:
x = 3
Step-by-step explanation:
Combine like terms
18x - 21 = 33
add 21 to both sides
18x = 54
divide both sides by 18
x=3
Could somebody explain this to me please?
Answers
\(\dfrac{5^{10}}{5^{12}}=5^{10-12}=\huge\boxed{5^{-2}}\\\\\\a^m:a^n=a^{m-n}\)
Answer:
your are correct
Step-by-step explanation:
i don't fell like geting brainlyest so the person who answer this question first can have it
Two AP's have the same first and last terms. The first AP has 21 terms with a common difference of 9. How many terms has the other AP if it's common difference is 4?
Answers
Answer:
The second AP value is 46.
Step-by-step explanation:
It's solved through the arithmetic sequence process.
Simplify -15- |-7.5|
Answers
Answer:
-22.5
Step-by-step explanation:
-15- |-7.5|
after taking the absolute value off, -7.5 would become positive 7.5. But then the negative outside the absolute value makes it negative again.
-15-7.5
=-22.5
The simplified expression -15 - |-7.5| is equal to -22.5.
To simplify the expression -15 - |-7.5|, we'll follow these steps:
Evaluate the absolute value: |-7.5|.
The absolute value of a number is its distance from zero on the number line. In this case, |-7.5| is equal to 7.5 because 7.5 units away from zero.
Substitute the absolute value into the expression:
-15 - 7.5.
Perform the subtraction:
-15 - 7.5 = -22.5.
Therefore, the simplified expression -15 - |-7.5| is equal to -22.5.
To know more about an expression follow;
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plss help me with this
I need to know which table in the photo represents a proportional relationship
Answers
Answer:
The third one sis
Step-by-step explanation: i did this problem alr
Cn somebody answer this, please? if it's write I will give the brainliest!
Answers
Answer:
4 times
Step-by-step explanation:
take the first two rows, the numbers are 3 & 12. 3×4= 12. 1×4= 4.
the graph displays the population of bacteria in a petri dish. describe the change in population over time.
Answers
Solve and show each step
Answers
Explanation: The y intercept it set on -10 and the x intercept is on 4. To find the slip you will count how far the y intercept is from the origin which is 10 spots away, then how far the x intercept is away from the origin which is 4 spots away. Since both are factors of 2 you divide each part my 2 to give you the slope of 5/2
Answer:
A. Slope = 5/2 , y-intercept = -10
Step-by-step explanation:
To find the y-intercept, it is always at the point on the y-axis where x=0. In the graph, the function crosses over -10 at x=0. So the y=intercept would be -10.
The slope "equation" is rise/run, aka y / x. In this case, an easy way to find it is by taking the y-intercept and seeing how far it is away from the origin. It is 10 away from the origin. Since this graph is heading right and upwards, it is increasing, resulting in the slope being positive. To find the "x" portion, from the origin, find when the graph crosses the x-intercept (the point where the line crosses through the x-axis). In this case, it will be 4.
Now that we know our y value and x value, put them into the slope formula.
Slope = rise/run --> 10/4 ---> 5/2
VIEWS The number of daily views during the first 10 days for a video posted on the Internet decreases according to the function 20(0.8¹). In the equation, x represents the number of days since the video was released and y represents the number of daily views, in thousands. Identify the relevant domain and range. Round to the nearest tenth if necessary.
Answers
Answer:
Answer is b i took the test
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
Answers
Help me please il give 20 points!
Answers
Answer: 1. a. 15 b. 11 c. 2 d. 7 e. 5.5
2. Stem: Leaf:
1 9
2 5, 9
3 3, 3, 8
4 0, 7, 9
5 4, 5
6 1, 5
7 2, 7
8 1
3. a. 13 inches b. I'm pretty sure that it is the second quarter because there is more snow. c. The first quarter because it's section is more spread out among the numbers.
Step-by-step explanation:
2. Stem:
Leaf:
9
2
5, 9
3
3, 3, 8
4
0, 7, 9
5
4, 5
6
1,5
7
2, 7
8
1
3. a. 13 inches
b. I'm pretty sure that it is
the second quarter because there is more show.
c. The first quarter because it's
section is more spread out among the numbers.
Step-by-step explanation:
WHOEVER ANSWERS CORRECTLY GETS BRAINIEST!
Han's cell phone plan costs $200 to start. Then there is a $50 charge each month.
a) What is the total cost (start up fee and monthly charge) to use the cell phone plan for 1 month? $
b) What is the total cost for x months?
Answers
Answer:
A) $250 B) 50x+200
Step-by-step explanation: A) 200+50(1)=200+50=250
B) 200+50x=50x+200
what are 3/4 equivalent to?
Answers
Answer:
6\8
Step-by-step explanation: Because 3/4 times 2/2 is 6/8
Mike sold half of his comic books and then bought 9 more. He now has 16. How many did he begin with?
Answers
Answer:14
Step-by-step explanation:
Answer:
Mike had 14 to begin with.
Step-by-step explanation:
16 - 9 = 7
7 x 2 = 14
14 / 2 = 7
9 + 7 = 16