Answer:
x = 15
Step-by-step explanation:
x+10=4x−35
x+10−4x=4x−35−4x
−3x+10−10=−35−10
−3x=−45
x = 15
Which of the following sets of values correctly completes the t-chart for the equation y = 2x2 - 1. image below
Answer:
y=3
Step-by-step explanation:
you times 2 and 2 together and it give you 4
3. Find the slope of the line that passes through (8, 1) and (3, 2). *
Answer:
your learning about slopes too :(
Step-by-step explanation:
Slope = change in y over change in x.
Slope = (2-1) / (3-8) = 1/-5 = -1/5
The answer is -1/5
Charlie runs laps around a track. The table shows how long it takes him to run different numbers of laps. How long would it take Charlie to run 7 laps? Numbers 2 4 6 8 10. Time 18 36 54 72 90
Answer:
42
Step-by-step explanation:
Answer:
63
Step-by-step explanation:
find one lap
2/2=1
18/2=9
1 lap = 9
1·7=7
9·7=63
i dont know functions
Answer:
6, -8
Step-by-step explanation:
You need to find out the possible values of which X cannot equal
In fractions the only way that's possible is if the denominator= 0
Because everything in the denominator is being mulitplied this is pretty simple
We need either parantheses to equal 0
so we take them and solve for 0
we have
x-6= 0
x=6
x+8=0
x= -8
What is 234475 x 45678 =?
What is it !, help !
Answer:
an isosceles triangle
Step-by-step explanation:
it has two equal sides so this is isosceles triangle
two coins are tossed at the same time. what is the probability they both land on tails?
Answer:
1/3
Step-by-step explanation:
Answer:
Step-by-step explanation:
30%
What is the volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm?
O 60 cm
O 1207 cm
O 300 cm3
O 1200 cm
Answer:
Step-by-step explanation:
Area of base = πr² = 25π sq cm
Volume = πr²h = 300π cu cm
ABC and def are parallel lines
BG=BE
Angle DEG =38 degrees
Angle GEB= 65 degrees
Find the size of angle ABG
Answer:...
Step-by-step explanation:
V70
Estimate the square root of the number below to the nearest tenth
In the book club, the girl to boy ratio is 6 to 9. If there are a total of 45 students, how many girls are there
For the figure shown on the right, find m<1 (I used someone else’s picture)
This items has Parts A and B.
Please scroll to the bottom of the page to answer each part.
Complete each of the 2 activities for this Task.
Use the information to answer the following questions.
Describe the probability of each given outcome using one of the phrases shown.
Certain
Likely
Unlikely
Neither likely nor unlikely
Impossible
Activity 1 of 2
Part A: A bag contains 10 Snickers bars and 1 Twix bar, and the outcome is drawing a Twix bar. Which phrase BEST describes the probability?
A.
Likely
B.
Neither likely nor unlikely
C.
Certain
D.
Impossible
E.
Unlikely
Activity 2 of 2
Part B: A bag contains 4 Snickers bars and 1 Twix bar, and the outcome is drawing a Twix bar. Does the phrase that describes the probability of drawing a Twix bar change from Part A?
A.
Yes, because it is still less likely to have an outcome of drawing a Twix.
B.
Yes, because there are still only two possible outcomes.
C.
No, because it is still less likely to have an outcome of drawing a Twix.
D.
No, because there are still only two possible outcomes.
Answer: part A: ( E : unlikely )
Step-by-step explanation:
Help me and you get 100 points and Brainliest
The table shows the test scores and the sleep averages of several students.
a. Write the least squares regression equation that models the data. Let x = hours of sleep and y = test score.
b. Use the equation to determine the approximate test score of a student who sleeps an average of 8 h a night. Show your work.
hey someone else has already answered this!
a. To find the least squares regression equation for a group of (x,y) points:
Step 1: For each point(x,y), we need to calculate x² and xy first.
Step 2: Sum all x, y, x² and xy, which gives us Σx, Σy, Σx² and Σxy
Step 3: Calculate Slope m: m = (NΣxy − Σx Σy)/ N(Σx²) − (Σx)² , here N is the number of data.
Step 4: Calculate Intercept b: b = Σy − m(Σx)/ N
Step 5: Assemble the equation as y= mx+b
Here, we have ∑x = 120, ∑y= 1379, ∑x²= 919.5, ∑xy= 10466 and N= 16
So, m= (NΣxy − Σx Σy)/ N(Σx²) − (Σx)²
=
=
=
= 6.33
and b = Σy − m(Σx)/ N
=
=
=
= 38.71
So, the least squares regression equation is : y= mx+b ⇒ y= 6.33x +38.71
b. When x= 8, then y= (6.33×8)+38.71 = 50.64 + 38.71 =89.35
The approximate test score of a student who sleeps an average of 8 h a night is 89.35%
EVERYTHING IS FROM sicista on brainly!
Answer:
A way to write the least regression equation that models is data y = mx + b => y= 6.33x + 38.71 and as for problem B when X = 8 then y = (6.33 x 8) + 38.71 = 50.64 = 38.71 = 89.35 so the estimated test score of a student who sleeps eight hours a night is equal to 89.39%
Step-by-step explanation:
brainliest for the correct answer
Answer:
5.5 ft ^2
Step-by-step explanation:
1.5 * 5= 5.5
100 POINTS AND BRAINLIEST!
Which of the following statements is true?
The most common biological evidence used in DNA testing is sweat.
DNA testing cannot be done on cells that have been dead for more than five years.
Inconclusive DNA test results usually means the suspect is guilty.
Some DNA tests analyze the mitochondria instead of the nucleus of a cell.
i think the answer is c hope this helps
Answer:
Some DNA tests analyze the mitochondria instead of the nucleus of a cell.
what is the actual length?
Answer:
Step-by-step explanation:
2ft
Hi I need help with #9 please I’m not sure what I’m supposed to do on this
Answer:
assuming ABCD is a parallelogram angleB+angleA=180°
Step-by-step explanation:
118°+2x+7+9x-33=180
125+11x-33=180
92+11x=180
11x=180-92
11x=88
x=88/11
x=8
✌
I need help again?????
Answer:
Step-by-step explanation:
Answer:
A. 180
Step-by-step explanation:
57*3 = 171
171 is about 180
Hope this helps!!!
First answer gets brainliest:
Answer:
5.5
Step-by-step explanation:
100-34 = 66
66/12 = 5.5
The perimeter of the triangle is 34 cm. Solve for x.
X-3
x-3
5x-2
X =
type your answer.
Answer:
x=6
Step-by-step explanation:
The first thing you do is combine all the equations.
[tex](x-3)+(x-3)+(5x-2)=34\\7x-8=34\\7x=42\\x=6\\[/tex]
Now, with some quick algebra, you got it!
The floor of a rectangular living room is 12 feet by 16 feet. What is the distance between
opposite corners of the living room?
Answer:
The width of Dana's living room is 16 feet.
Explanation:
Because Dana's living room is rectangular and we are given the length of one side and the length of the diagonal we can use the Pythagorean Theorem to solve this problem.
For a right triangle which the length, width and diagonal make up the Pythagorean Theorem states:
a
2
+
b
2
=
c
2
Let the length of 12 be
a
and because the diagonal is the hypotenuse of the triangle (the side opposite the right angle) we let
c
be 20. Substituting and solving gives:
12
2
+
b
2
=
20
2
144
+
b
2
=
400
144
−
144
+
b
2
=
400
−
144
0
+
b
2
=
256
b
2
=
256
√
b
2
=
√
256
b
=
16
Find the product. (6x2 + 8)(3x2 – 5x + 7)
o 4234 – 70x3 + 98x
18x4 – 30x3 +66x2
40x + 56
O 18x4 – 30x3 + 42.2 + 8
O 18x4 + 36x2
402 + 56
Answer:
18x^4 – 30x³ +66x²- 40x + 56
Step-by-step explanation:
A rectangular flower garden has a length that is 3-feet greater than its width. If the flower garden is surrounded by a 1 foot wide concrete path, write a quadratic equation that represents this situation.
If x is to y as 4 is to 5, then what is y : x?
Answer:
4:5
Step-by-step explanation:
You are doing ratios
1/3 of 18 using a tape diagram.
Answer:
6 6 6
____ ____ ____
Michael buys a computer that is on sale for 10% off the original price. The original price is $38 more than the sale price. What is the original price of the computer?
Answer:
380
Step-by-step explanation:
10%->38
100%-> 38÷10×100=380
The function is defined by g(x) = 2x^2 + 5
Find g(5x)
b(b-5)²=0
what is the answer?
Answer:
this is your answer..
OK hope this is k
helpful for you.
HELP!!!!! Algebra II Help needed
Find a formula for the nth term of the arithmetic sequence.
First Term -2
Common Difference 8
Gotten this far:
an=8n+?
Thank you!!!
Answer:
[tex]a_{n} = 8n - 10[/tex]
Step-by-step explanation:
[tex]a_{n} = a_{1} + (n - 1)d[/tex] is the formula you want to use
[tex]a_{n} = -2 + (n - 1)8[/tex]
= -2 + 8n - 8
= 8n - 10