Answer:
-7x^3+8x^2+x-5
Step-by-step explanation:
We are simply adding the two functions:
f(x) + g(x) = (2x^2-5x^3+x-7) + (6x^2-2x^3+2) = 8x^2-7x^3+x-5 = -7x^3+8x^2+x-5
Question 14 options: x−93=28 Solve for x.
Answer:
x = 121
Step-by-step explanation:
In order to solve for "x" you need to get it on one side by itself. To do that you need to add 93 to the other side. 93 + 28 is 121.
Answer:
121
Step-by-step explanation:
x-93=28
x=28+93
x=121
please help will mark brainliest
Answer: 10.5/6 - 6.5/6 = 2/3
Step-by-step explanation:
The answer is 10.5/6 - 6.5/6 = 2/3
I HAVE 10 min to finish PLEASE I NEED HELP WITH MATH
Answer:
90 degrees
Step-by-step explanation:
A swimming pool has a leak and is losing 23.5 gallons of water every 5 days. What is the average change in water volume each day?
Step-by-step explanation:
If you divide the distance by the elapsed time, the result will be the rate of water loss (evaporation). To convert this evaporation rate in to gallons lost over a specific time period, you will need convert the measure into a volume. WTG GLAD U GOT IT RIGHT..
Plsssss help before it gets locked
Answer:
uhhh i might be l;ate lol
Step-by-step explanation:
Which digit is in the billions place?
281 847 583 332.9
Answer:
1
Step-by-step explanation:
281,847,583,332.9
Answer:
I think 847
Step-by-step explanation:
The order of place value is trillion, billions, millions, thousands, and ones. Billion comes third. This is why I think its 847.
I hope this helps u! :D
Please see the attachment. Thank you
Select the correct answer from each drop-down menu. How many solutions does each polynomial have? Equation y=-6x-9, y=2^5-x^4+2x^3-6x^2+2x+4, y=-4x^3-10x^2+7x+5 Number of Solutions
Answer:
-6x-9= 1
2x^5-x^4+2x^3-6x^2+2x+4= 5
-4x^3-10^2+7x+5= 3
Step-by-step explanation:
i just did and everything was right
last year, a popular mobile app was downloaded 2.47 x 10^8 times. write the number of times the app was downloaded in slandered form
Answer:
247000000
Step-by-step explanation:
10^8 = 10×10×10×10×10×10×10×10
=100000000
or, downloaded=100000000×2.47
=27000000
Answer: 453 more downloads 1,547 more downloads
7,549 more downloads 435 more downloads ( it will be one of these answers pls help me im doing a quiz) ~cries cutely~
Step-by-step explanation:
An app was downloaded 3,548 times last week. This week the app was downloaded 4,001 times. How many more downloads did the app have this week than last week
reflect point a (1,1) over y axis
Answer:
reflected across the y axis, the point (1, 1) becomes (-1, 1).
Step-by-step explanation:
To reflect a point across the y-axis, all you need to do is negate the x coordinate. That gives you (-1, 1)
Please I really need help!!
(Solve using tape diagrams)
Serena's mom is planning her birthday party. She bought balloons, plates, and cups. Serena's mom bought twice as many plates as cups. The number of balloons Serena's mom
bought was half the number of cups. If Serena's mom bought 84 items, how many of each item did she buy?
Answer:
look at the picture
Step-by-step explanation:
the picture explains everything
At a movie, 80% of the audience members were teenagers. If the number of teenagers at the movie was 56, what was the total number of audience members?
PLS ILL GIVE BRAINLIST TO WHOEVER ANSWERS N YOU DONT HAVE TO DO AN EXPLANATION)
Answer:
ANSWER IS 70!
Step-by-step explanation:
7.4 divided by 92.5 will have the same quotient as 74 divided by 925?
Yes because in it's the same variable do it will give the same answer
Nico did 42 push-ups in 3 minutes.
What is the unit rate?
push-ups per minute
At this rate, how many push-ups can Nico do in 5 minutes?
Answer:
14 pushups per min
70 pushups in 5 min
Step-by-step explanation:
(PLEASE HELP ASAP)
A plumber has a 12-foot piece of pipe. He needs 8 feet, 6 inches of pipe to repair a leak in a water line. How many inches of pipe will he have left after he makes the repair?
Answer:
3ft 6in or 42 inches in total
Step-by-step explanation:
hope this helps
Please answer whoever answer correct gets a brainlest Which character trait of Kim’s does the narration revel in this passage
Answer:
She is determined
Step-by-step explanation:
Answer:
Determined
Step-by-step explanation:
pls help me!! thank you!!
Answer:
4
Step-by-step explanation:
Solve for v.
v-8.4= 6.62
Answer:
v-8.4=6.62 +8.4
v=15.02
Step-by-step explanation:
prove me wrong
z
X
Y
34°
28
Х
Plz help
9514 1404 393
Answer:
2. x ≈ 17.74
3. x ≈ 16.64
Step-by-step explanation:
The tangent function relates an angle to the opposite and adjacent sides of a right triangle:
Tan = Opposite/Adjacent
Here, we're looking for the measure of the side opposite the angle, so we can rearrange this relation to ...
Opposite = Adjacent×Tan
__
2. x = 32×tan(29°) ≈ 17.74
3. x = 13×tan(52°) ≈ 16.64
_____
Hopefully, we've given enough decimal places so that you can round to the precision you need.
quick ASAP 25 POINTS AND BRAINLIEST FOR BEST ANSWER
Multiplying Rational Expressions
Simplify each expression
(1/p-9)*(p^2+6p-27/p+9)
Answer:
-9p3 + 6p2 + 9p - 26/ p
Step-by-step explanation:
hope this helps
please hurry i need an answer
Answer:
[tex]-\frac{11}{6}\ \frac{inches}{second}[/tex]
Step-by-step explanation:
Rate of Change
The average velocity is defined as the rate of change of the distance with respect to time. The table shows the distances of an object as a function of time.
It's required to find the average velocity between 8 s and 20 s.
The rate of change can be approximated as the slope between two points. We take from the table the points (8,32) and (20,10) and calculate the slope.
The slope can be calculated with the equation:
[tex]\displaystyle v=\frac{d_2-d_1}{t_2-t_1}[/tex]
[tex]\displaystyle v=\frac{10-32}{20-8}=\frac{-22}{12}[/tex]
Simplifying:
[tex]\displaystyle v=-\frac{11}{6}[/tex]
Choice: B. [tex]\mathbf{-\frac{11}{6}\ \frac{inches}{second}}[/tex]
My sister need help!!!
Answer:
nice hand writing
Step-by-step explanation:
How Many Solutions?
3x - 7 = 3(x - 3) + 2
No Solution
One Solution
Infinite Solution
Answer:
Infinite Solutions
Step-by-step explanation:
3x-7=3x(x-3)+2
3x-7=3x-9+2 - Distributive Property
3x-7=3x-7 - adding the right side together
Stefan sells Jin a bicycle for $137 and a helmet for $17. The total cost for Jin is 140% of what Stefan spent originally to buy the bike and helmet. How much did Stefan spend originally? How much money did he make bying the bicycle and helmet to Jin? Stefan originally spent $
Answer:
Stefan originally spent $110.
Stefan made a profit of $44.
Step-by-step explanation:
Given that:
Stefan sold the bike and helmet for $137 and $17
Total amount = 137+17 = $154
This is 140% of the price Stefan originally paid.
Let,
x be the original price paid by Stefan
140% of x = $154
[tex]\frac{140}{100}x=154\\1.4x = 154\\\frac{1.4x}{1.4}=\frac{154}{1.4}\\x=110[/tex]
Therefore,
Stefan originally paid $110 for the bicycle and helmet.
Profit made by Stefan = 154-110 = $44
Hence,
Stefan originally spent $110.
Stefan made a profit of $44.
Six out of the 12 members of the school choir are boys. In simplest form, what fraction of the choir is boys?
Answer:
1/2
Step-by-step explanation:
MATH URGENT PLEASSE HELP ME For the equation y = 2m + 6, what does y equal when m is 3?
Answer:
twelve
Step-by-step explanation:
y=2(3)+6
y=6+6
y=12
thats basically how you do it
Solve the compound inequality 4x – 7 > 5 or 5x + 4 ≤ –6. Question 18 options: A) –2 ≤ x 3 C) x 3
Answer:
x>3 or x≤-2
Step-by-step explanation:
4x-7>5 or 5x+4≤-6
4x>5+7 or 5x≤-6-4
x>3 or x≤-2
A random sample of 11 nursing students from Group 1 resulted in a mean score of 65 with a standard deviation of 4.7. A random sample of 16 nursing students from Group 2 resulted in a mean score of 74 with a standard deviation of 2.5. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2
Answer:
The calculated value of t= -1.118860 does not lie in the critical region t= -1.714 or t= -2.5. Therefore we accept our null hypothesis that the mean score for Group 1 is significantly lower than the mean score for Group 2 for both significance level of 0.05 and 0.01
Step-by-step explanation:
Groups Sample Size Mean Standard Deviation
1 11 65 4.7
2 16 74 2.5
Formulate null and alternate hypotheses as
H0 : u1 < u2 against Ha: u1 ≥ u 2
That is the mean of the group 1 is lower than the mean of the group 2
Degrees of freedom is calculated df = υ= n1+n2- 2= 11+16-2= 23
The significance level alpha is chosen to be ∝ = 0.05
The critical region t ≤ -t (0.05, 23) = -1.714
And if we choose alpha = 0.01 the critical region would be
t ≤ -t (0.05, 23) = -2.5
Here the difference between the sample means is x`1- x`2= 65-74= -9
The pooled estimate for the common variance σ² is
Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]
= 1/11+16-2 [ (65)²+(74)²]
= 1/23[ 4225+5476]
= 1/23[9701]
=421.782
Sp =√ 421.782=20.5373
The test statistic is
t = (x`1- x` ) /. Sp √1/n1 + 1/n2
t= -9/ 20.5373√1/11+ 1/16
t= -9/8.0439
t= -1.118860
The calculated value of t= -1.118860 does not lie in the critical region t= -1.714 or t= -2.5. Therefore we accept our null hypothesis that the mean score for Group 1 is significantly lower than the mean score for Group 2 for both significance level of 0.05 and 0.01
Identify the property demonstrated.
4(3+5) = 4.3 +4.5
-associative property of
multiplication
-commutative property of multiplication
-distributive property
-identity property of multiplication
Answer:
Distributive property
Step-by-step explanation:
A closed box has a square base with side length feet and height feet. Given that the volume of the box is cubic feet, express the surface area of the box in terms of only.
Complete Question:
A closed box has a square base with side length L feet and height h feet. Given that the volume of the box is 39 cubic feet, express the surface area of the box in terms of L only.
Answer:
[tex]A = \frac{156}{L} + 2L^2[/tex]
Step-by-step explanation:
Given
[tex]Volume = 39ft^3[/tex]
Required
Express the surface area in terms of L
Because the box has a square base:
The volume is:
[tex]Volume = Base\ Area * Height[/tex]
Where
[tex]Base\ Area = L * L[/tex]
So, we have:
[tex]Volume = L * L * H[/tex]
Substitute 39 for Volume
[tex]39= L * L * H[/tex]
[tex]39= L^2 * H[/tex]
Make H the subject
[tex]H = \frac{39}{L^2}[/tex]
The surface area (A) of a box with square base is:
[tex]A = 2(LH + LH + L^2)[/tex]
[tex]A = 2(2LH + L^2)[/tex]
Open bracket
[tex]A = 4LH + 2L^2[/tex]
Substitute [tex]\frac{39}{L^2}[/tex] for H
[tex]A = 4L * \frac{39}{L^2} + 2L^2[/tex]
[tex]A = \frac{4L *39}{L^2} + 2L^2[/tex]
[tex]A = \frac{4*39}{L} + 2L^2[/tex]
[tex]A = \frac{156}{L} + 2L^2[/tex]