Answer:
-7
Step-by-step explanation:
You use the quadratic formula of [tex]ax^{2} +bx+c = 0[/tex] to get:
a = 1
b = 7
c = -13
then you plug that into x= (-b ± √b²-4ac)/(2a) :
x= ( -7 ± √7²- 4(1)(-13) )/(2(1))
[tex]x=-\frac{7}{2} + \frac{\sqrt{101}}{2} \\\\x=-\frac{7}{2} - \frac{\sqrt{101}}{2}[/tex]
The sum of these two x values turns out to be:
[tex]x=-\frac{7}{2} + \frac{\sqrt{101}}{2}+( -\frac{7}{2} - \frac{\sqrt{101}}{2} )= -\frac{14}{2} = 7[/tex]
in mrs. smiths class every time you turn in assignments you earn 1 homework pass. write 3 equivalent ratios of turned in assignments to homework passes
help please I need it
Answer:
Assignment to Homework: 3:9 4:12 5:15
Answer:
3:9 4:12 5:15
i think
Step-by-step explanation:
On his way to the library , Jeff runs two blocks and then walks three more blocks.Sketch a graph to show the distance Jeff travels compared to time.
Answer:
Since I can't take a picture, I am going to explain how to draw it.
Step-by-step explanation:
When sketching the graph you must note if jeff is going up the y-axis and along the x-axis. In this case, run means he goes up every minute. So when jeff runs he is going up and 2 minutes have gone by. And when he walks he is going up 3 more but slower so it would double the time. Time would be on the x-axis and blocks would be labeled on the y-axis.
Hope this helps. : )
What is the slope of the line?
Answer:
Y= -4/-4x -1
Step-by-step explanation:
I think this is correct, I haven't done this in awhile though. I hope this helps
What is the solution for -10 -19
A.)x > -19
B.)x -1
Answer:A
Step-by-step explanation:positive is bigger then negative.
which of the following is the ratio of boys to girls in tamir's math class?
12/27
12/15
15/12
27/12
Answer:
12/15
Step-by-step explanation:
you put the number of boys over the number of girls
sometimes you can simplfy but it looks like the answer choice doens't want you too
Rapid Rental Car charges a $40 rental fee, $25 for gas, and $0.65 per mile driven. For the same car, Capital
Cars charges $55 for rental and gas and $0.75 per mile.
Part 1 out of 2
For how many miles is the rental cost at both companies the same?
The rental costs at both companies are the same at
miles.
40 + 15 + 0.25x = 45 + 0.35y
Solution
55 + 0.25x = 45 + 0.35y The only way you can do this is to assume that x and y are equal
subtract 45 from both sides
55 - 45 + 0.25x = 0.35x
10 + 0.25x = 0.35x Subtract 0.25x from both sides.
10 = 0.35x - 0.25x
10 = 0.1x Divide by 0.1
10/0.1 = x
x = 100 So if each car goes 100 miles, it should turn out to be the same no matter which company gets the rental.
Let's see if that is true.
Cost for the first company = 40 + 15 + 0.25x = 55 + 25 = 80 dollars.
Cost for the second company = 45 + 0.35x = 45 + 35 = 80 dollars.
Conclusion
Both rentals charge the same total amount when each car is driven 100 miles.
The charge is 80 dollars.
Hope this helped! :)
plssssssssssssss help
What are the 7 & 9 for? Obviously, you had info from somewhere else for the 9 & 7 if they are THE ONLY NUMBERS here
For 20 points, Round each mixed number to the nearest whole number. Then, estimate the quotient. 24 16/17 devided by 4 8/9
Answer:
you would round up because 24 16/17 is closer to 25 and 4 8/9 is closer to 5.
which would be 25/5 which estimates to 5.
Step-by-step explanation:
Complete the explanation of whether the graph represents a proportional or a nonproportional linear relationship
Answer:
your answer would be
proportional linear
Step-by-step explanation:
Evaluate the expression 2(5x -3y) if x = -1/2 and y = 1
What is the slope of the line?
Answer:
Its 1/1 or -1/-1
Step-by-step explanation:
Answer:
The slop of the line is 1
Step-by-step explanation:
To find slop of the line you look at rise over run, or the distance from one point to another up then across. In this graph, from the point (0,-3) to (1,-2) you go up one point and across one point. 1/1 = 1 so the slope is 1.
put 2/3 5/7 16/21 in order from least to greatest
Answer:
5/7, 2/3, and 16/21
Step-by-step explanation:
If you put them all under the same denominator you will get 2/3=14/21, 5/7= 10/21, and 16/21. And if you put them in order it is 10/21, 14/21, and 16/21. Hope this helps, let me know if correct!!
2/3, 5/7, 16/21
Step-by-step explanation:
turn them into decimals
Question below!!!!!!!!!!!!!
Answer:
A because they 35 needs to stay with 100 and x needs to stay with 275 and 100 and 275 have to be on the same part of the ratio
Step-by-step explanation:
Aubrey says that the product of 104 and 10–2 is 10–8. Is she correct? If not, explain why.
A. Yes, she is correct.
B. No, the exponent should be positive 8.
C. No, she multiplied the exponents instead of adding them.
D. No, she multiplied the exponents instead of subtracting them.
Answer:
C
Step-by-step explanation:
No, she multiplied the exponents instead of adding them.
HELP ME! 1/2h=17+2 solve for h.
Answer:
H=38
Step-by-step explanation:
Mark donated 15% of the money he earned last summer to the hurricane relief fund. If he donated at total of $475.00 how much did he earn last summer? (if needed, round your answer to the nearest cent)
Which number has only two factors?
A 21
B 27
C 25
D 23
please help-
Answer:
23
Step-by-step explanation:
A number is made up of 2 tens and 5 tenths.
A second number is made up of 6 ones and 8 hundredths.
A third number is made up of 2 tens and 6 hundredths.
A fourth number is made up of 5 ones and 8 tenths.
What is the difference between the greatest number and the least number?
Answer:
A:25
B:860
C:620
D;85
E:
Nicky and his parents recently Immigrated to the United States from Syria. Nicky attends school and is having a hard
time learning about his new country. His parents are interested in what happens in their community as well. Which
feature of national Identity is likely to make it hard for them to feel a part of the United States?
Language
innovation
competition
form of government
Answer:
Language
Step-by-step explanation:
Nicky is having a hard time with school - competition and form of government may be eliminated.
Help Help Help Help...What does it take for an orbiting spacecraft to escape its orbit?
Answer:
Manual Override??
Step-by-step explanation: I'm prop wrong
Answer:
To leave its orbit, the spacecraft must go very fast to break free of gravity.
Step-by-step explanation:
I really don't even remember learning this... PLEASE HELP. :) politely
I kind of already filled out some answer, please tell me if their wrong.
Answer:
Car C is going to have a constant of 55
Step-by-step explanation:
y=55x
y means that every hour you will have 55 miles
Lin was putting up lights for the holidays around the house. She put up 48 lights in her house and 36 of the lights were green. What percentage of the lights were green?
.
Explain the power of products property and give an example.
Answer:
We use the power of a product rule when there are more than one variable being multiplied together and raised to a power of something. The power of a product rule tells us that we can simplify a power of a power by multiplying the exponents and keeping the same base.
90 is what percent of 150
Answer:
60%
Step-by-step explanation:
Divide: 3/4 divided by 2/5
2 and 1/5
3 and 3/4
2 and 3/5
1 and 7/8
Answer:
1 and 7/8
Step-by-step explanation:
[tex]\frac{3}{4}[/tex] ÷ [tex]\frac{2}{5}[/tex]
When dividing you have to flip the second number. When the fraction/number flips the problem will turn into multiplication.
[tex]\frac{3}{4}[/tex] × [tex]\frac{5}{2}[/tex]
Now just multiply them. 3×5 and 4×2
[tex]\frac{15}{8}[/tex]
Simplify the fraction
[tex]1\frac{7}{8}[/tex]
I hope this helps!
Rewrite the rational exponent as a radical expression (3 raised to 2/3) 1/6
Hi everyone this is the last question can you please help me for brainliest
Estimate the percentage: 6,683 of 20,489
a. 0.3% c. 3%
b. 43.3% d. 33.3% Explain
Answer: B
Step-by-step explanation: B
PLEASE PLEASE HELP ME
Answer:
d
Step-by-step explanation:
An employee placed Ask Your Teacher books onto each of 5 shelves. How many books did she place on the shelves in all?
A. 16
B. 80
C. 120
D. 245
Answer: we need to know how many books she placed on each shelf in order to answer this sorry
Step-by-step explanation: