Answer:
C. 0.81; The least-squares regression line, given by ŷ = −126.08 + 122.67x, is a good fit to the data.
The equation x = -7y^2 describes a parabola. Which way does the parabola
open?
Answer:
left
Step-by-step explanation:
y²=4ax opens right.
y²=-4ax opens left
x²=4ay opens up
x²=-4ay opens down.
7. What is the mass of 20.6cm3 of iron if iron
has a density of 7.87g/cm3?
A. 162.1 g/cm3
B. 162.1 cm3
C. 162.1 g/mL
D. 162.1 g
Answer:
Option B
Step-by-step explanation:
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which point is collinear to the point (0,0)?
A) (1,0)
B) (3,2)
C) (4,1)
D) (1,3)
Answer:
All of them are right
Step-by-step explanation:
Are you sure the question was that?
Collinear means that it lies on the same line
Now, from every 2 points passes a unique line
So(0,0) and (3,2) are in a line
(0,0) and (1,0) are in an other line and so on
The polynomial p(x)=3x^3-19x-30 has a known factor of (x+2). Rewrite p(x) as a product of linear factors. p(x) =
A linear combination of elements. p(x) =(x-10)(x-19)(x+2)
How do linear factors work?The first-degree equations that make up a polynomial's linear factors serve as the foundation for higher-order and more complicated polynomials.
The formula for a linear factor is ax + b, and it cannot be factored further.
A polynomial is what?Sums of terms with the form k xₙ, where k is any number and n is a positive integer, make up polynomials.
According to the provided equation, for instance,
3x+2x-5 is a polynomial;
p(x)=3x3-19x-30
x(x-19)-10 =0
=(x-10)(x-19)(x+2).
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2a^(2) – (4b + c); a = –3, b = –2, and c = 1
Answer:
= 25
Step-by-step explanation:
2 (-3)^2 - (4(-2) + 1)
2 (9) - (-8 + 1)
18 - (-7)
25
An expression is a combination of numbers, variables, and functions such as addition, subtraction, multiplication or division, etc.
The value of the expression 2a² - ( 4b + c ) is 25.
What is an expression?An expression is a combination of numbers, variables, and functions such as addition, subtraction, multiplication or division, etc.
We have,
2a² - ( 4b + c ) ______(1)
a = -3, b = -2 and c = 1
Substitute a, b, and c in (1)
= 2 x (-3)² - ( 4(-2) + 1 )
= 2 x 9 - ( -8 + 1 )
= 18 - ( -7 )
= 18 + 7
= 25
Thus the value of the expression 2a² - ( 4b + c ) is 25.
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Help meeeee plssss!!!!!!!!
18. Two planes left an airport at the same time. One flew north at a set speed and the other
flew south at one-and-a-half times the speed of the other plane. Three hours later the planes
were 2400 miles apart. How fast was each plane flying?
Answer: plane A = 333.33mph
Plane B = 500mph
Step-by-step explanation:
Given data:
Distance between the two planes = 2400miles.
Plane A flew North
Plane B flew south
Solution:
Let v represent plane A.
Let 2v represent plane B.
Distance between the two plane
v + 1.5* v = 3*v
7.5v = 2500miles
v = 333.33mph
Plane B has one and half times the speed of plane A
= 1.5 * 333.33
= 500mph
What is the slope? The coordinate plane line has one point on (-4,4) and the other line on (0,-1)
M = -5/4
M = 5/4
M = -4/5
M = 4/5
PLS HURRY!!!!
10. Simplify r +6 - 3x - 8.
F. -2x-2 G. -2x-14
H. -3x-14
I.-3x -2
G-3-8 2x-8
Your payment is $515 per month for 24 months and you made a 3,000 down payment ?
Answer:
is this a question?
Step-by-step explanation:
if it is, your correct
Which is the best estimate of each percent?
32% of 19
A. 0.6
B. 600
C. 60
D. 6
Answer:
Option D
Step-by-step explanation:
In order to find the answer to this question you need to multiply the precent by the number and then divide by one-hundred.
[tex]32=19[/tex]
[tex]32\times19=608[/tex]
[tex]608\div100=6.08[/tex]
[tex]6.08=6[/tex]
[tex]=6[/tex]
Hope this helps.
I need help with solving for x please
Answer:
1. x = 16
2. 2x + 9 = 41
Step-by-step explanation:
So this is the first step.
2x + 9 + 3x + 1 = 90 (collect like terms)
5x + 10 = 90 (subtract 10 on both sides)
5x = 80 (divide by 5 on each side)
x = 16
Plug in to 2x + 9
2(16) + 9 =
32 + 9 =
41 = 2x + 9
Hope this helps! Have a blessed day!
Please help! It’s due today
Answer:
y=1x+2
Step-by-step explanation:
()) What is 8 cubed? Submit
Answer:
512
Step-by-step explanation:
8 to the 3rd power is 512
w=3(2a+b)-4 when making a the subject
1/4(4+x)=4/3
---------------
Find the difference.
(8x^5+ 6x^3 – 2x² + 10x) – (9x^5– x^3– 13x² + 4) =
Answer:
Step-by-step explanation:
(8x^5+ 6x^3 – 2x² + 10x) – (9x^5– x^3– 13x² + 4) =
-x^5+7x^3+11x^2+10x-4
Nigel wants to average 85% on his four tests. He got 77%, 89%, 78% on his first three tests. What does he need to get on his last test to average 85%?
Answer:
Step-by-step explanation:
Let x be the value of the test score needed to get 85
Equation
(77 + 89 + 78 + x)/4 = 85 Combine the left side to like terms
(244 + x)/4 = 85 Multiply by 4
244 + x = 85 * 4
244 + x = 340 Subtract 244
x = 340 - 244
x = 96
He needs to get 96 to average out to 85
Solve w + (-2) = -18 for w.
w =
Answer:
Step-by-step explanation:
w - 2 = -18
w - 2 + 2 = - 18 + 2
w = -16
Answer:
-16
Step-by-step explanation:
w + (-2) = -18 w= -16
In order to be allowed to go on a field trip to the zoo, 80% of the students in Mrs. Henry's class must pass a pop quiz. If there are 30 students in the class, how many students must pass the quiz?
Answer:
X = 24
Step-by-step explanation:
Answer:
the answer is 24
Step-by-step explanation:
Personal finance free help me !! :(( math!!
Answer:i say c or b either one.
calculate each
!!!!!!!!!
Step-by-step explanation:
1. (4m² - 1.5m + 2) + (9m - 2m³ + 2m)
= 4m² - 1.5m + 2 + 9m - 2m³ + 2m
= 4m² + (-1.5m + 9m + 2m) + 2 + 2m³
= 4m² + 9.5m + 2 + 2m³
= 2m³ + 4m² + 9.5m + 2
2. (-3y + 2y² - 6) + (3y + 4y² + x)
= -3y + 2y² - 6 + 3y + 4y² + x
= (-3y + 3y) + (2y² + 4y²) - 6 + x
= 0y + 6y² - 6 + x
= 6y² - 6 + x
Container A and container B have leaks. Container A has 800 ml of water, and is
leaking 6 ml per minute. Container B has 1000 ml, and is leaking 10 ml per minute.
How many minutes will it take for the two containers to have the same amount of
water?
**Write an equation to represent the situation (first blank). Use the variable m, for
minutes.
**Then solve for m (second blank).
**Finally, use your solution to determine the water level at that time (third blank).
The equation
can represent this situation. It will take
minutes for the two containers to have the same amount of water. At this time,
both containers will have ml left.
Answer:
a) 50 minutes
b) The water level at 50 minutes for Container A and B would be 500ml
Step-by-step explanation:
a) Let number of minutes at which both containers leak be represented by m.
Container A has 800 ml of water, and is leaking 6 ml per minute.
800ml - 6ml × m
800 - 6m
Container B has 1000 ml, and is leaking 10 ml per minute.
1000ml - 10ml × m
1000 - 10m
How many minutes will it take for the two containers to have the same amount of water?
Container A = Container B
800 - 6m = 1000 - 10m
Collect like terms
-6m + 10m = 1000 - 800
4m = 200
m = 200/4
m = 50 minutes
It will take 50 minutes for the two containers to have the same amount of water.
b) Finally, use your solution to determine the water level at that time.
Since m = 50 minutes
Container A = Container B
800 - 6m = 1000 - 10m
800 - 6 × 50 = 1000 - 10 × 50
800 - 300 = 1000 - 500
500 ml = 500 ml
Therefore, the water level at 50 minutes is 500 ml
15 points!! Please help!
What do I do if I have a money problem but the answer is like this, 17.199?
(They don’t say to round)
Answer:
You need to round thats how you are supossed to do those equasions. I had that before too your supossed to round.
sorry for bad spelling
Step-by-step explanation:
Past experience
1.Read the passage given below.
I have found that nothing in life is worthwhile unless you take risks. Nothing.
Nelson Mandela said: “There is no passion to be found playing small, in settling
for a life that is less than the one you are capable of living.”
I am sure your experiences in school… in applying to college… in picking your
major…in doing what you want to do with life, people have told you to make
sure you’ve something to “fall back on”.
But if I am going to fall, I don’t want to fall back on anything, except my faith.
I want to fall forward. At least I figure that way I will see what I am about to hit.
Thomas Edison conducted 1,000 failed experiments. Did you know that? I
didn’t either, because 1,001 was the light bulb.
Fall forward.
Every failed experiment is one step closer to success. You have got to take risks.
And I am sure you’ve probably heard that before. But I want to talk about why
it is so important.
You will fail at some point in life. Accept it. You will lose. You will embarrass
yourself. There is no doubt about it. That’s not a traditional message for a
graduation ceremony.
But, hey, I am telling you- embrace it. Because it is inevitable.
And I should know; in the acting business you fail all the time.
Early in my career, I auditioned for a part in a Broadway musical. A perfect role
for me, I thought- except for the fact that I can’t sing. So, I start to sing and
they are not saying anything. I think I must be getting better, so I start getting
into it. The director cuts me off saying I will be hearing from him.
I assumed I didn’t get the job.
But the next part of the audition, the acting part, he called me back, though I
didn’t get that too.
But here’s the thing. I didn’t quit. I didn’t fall back.
I walked out of there to prepare for the next audition, and the next audition,
and the next one. I prayed and I prayed, but I continued to fail, and failed and
failed.
But it didn’t matter because if you try long enough you’ll catch your break.
And I did catch a break.
On the basis of your understanding of the passage, answer the questions that
follow. (1x5=5)
I. The speaker will fall back only on his
a) savings
b) faith
c) relations
d) physical strength
II. Which of the following does not mean the same as ‘fall forward’ here?
a) try again
b) another attempt
c) retry
d) fall on the ground
III. What are the two things that the listeners would have heard before,
according to the speaker?
1.making sure that one has something to fall back on.
2.one has got to take risks.
3.always settle for what one has
4.every failure is one step close to success.
a) 1 and 2
b) 2 and 3
c) 3 and 4
d) 1 and 3
IV. What is the Literary Device used in the paragraph “I walked out of there
to prepare for the next audition, and the next audition, and the next one.
I prayed, and I prayed, but I continued to fail, and failed and failed.”
a) parallelism
b) hyperbole
c) repetition
d) irony
V. What do you understand about the profession of the speaker from the
passage?
a) singer
b) writer
c) poet
d) actor
Answer:
singe
writer
poiter
and many many things
if sec(∞) < 0 and the sin(∞) = 15/17 what is the exact value of cot (∞)
Amount saved ($)
90
у
80
70
60
50
40
30
20
10
Х
0 1 2 3 4 5 6 7 8 9
Time (weeks) which one is the y-intercept
Answer:
amount saved
Step-by-step explanation:
At that rate, how many minutes will it
take for the plane's altitude to change
by -5,400 meters?
Please answer I need to finish this now it’s already past due
Answer:
It would require 12 minutes for the plane's attitude to change by -5,400 meters.
Step-by-step explanation:
As the altitude (or height) of a plane landing at an airport-changes at a rate of -450 meters per minute.
∴ unit rate = -450 meters/per minute
We have to determine how many will it take for the plane's altitude to change by -5,400 meters.
Altitude change per minute = -450 metersi.e.
-450 × 1 = -450 meters (altitude change in 1 minute)
so
-450 × 12 = - 5400 meters (∴ unit rate = -450 meters/per minute)
At this rate, it would require 12 minutes for the plane's attitude to change by -5,400 meters.
Because -450 × 12 = - 5400 meters
Therefore, it would require 12 minutes for the plane's attitude to change by -5,400 meters.
pls help will mark brainliest!
Answer:
Step-by-step explanation:
4L 255ml
-
2L 755ml
--------------
1.5L or 1500ml or 1L 500ml
CAN SOMEBODY HELP ME WITH THIS?????? I WILL MARK BRAINLIEST
CAN SOMEBODY HELP ME WITH THIS?????? I WILL MARK BRAINLIEST
Answer:
2/7 or about 29%
Step-by-step explanation:
2 are blue and there are 7 cards total so 2/7 and 2 divided by 7 is .2857 or .29 (29%).
Answer:
2/7
Step-by-step explanation:
There are 7 envelopes and 2 blue envelopes so the probability that the envelope will be blue is 2/7