Step-by-step explanation:
f(x) = -7x² - x
g(x) = 9x² - 4x
(f - g)(x) = (-7x² - x) - (9x² - 4x)
(f - g)(x) = (-7x² - 9x²) + (-x + 4x)
(f - g)(x) = -16x² + 3x
(f - g)(1) = -16(1)² + 3(1)
(f - g)(1) = -16.1 + 3
(f - g)(1) = -16 + 3
(f - g)(1) = -13
A sum of money is shared among Ben, jack, and Sarah in the ratio 6:8:10. If Sarah receives $50 how much does Ben receive?
Step-by-step explanation:
Sarah receives $50 in ratio 10
if 10÷2=5
$50÷2=25
hence 6=1
1=x Cross Multiply
6x÷6 = 1÷6
x = 0.1666…
Hence Ben gets ($50÷2+{0.1666…})
$25+0.166… = $25.166…
work out the value of 35-3×9
Answer:
[tex]35 - 3 \times 9 \\ = > 35 \: - 27 \\ = > 08[/tex]
hope helpful <3
Answer:
8
Step-by-step explanation:
the most important thing to remember here is the priority, multiplication before substraction
35 - 3 * 9 = 35 - 27 = 8
How to write the value of 17 tens in standard form
-5x=5 solve for x plssss help
Answer:
x=-1
Step-by-step explanation:
-5x=5
-x=1
x=-1
or solve this way
-5x=5
5x=-5
x=-1
[tex] \Huge\begin{gathered} {\underline{\boxed{ \mathcal{\purple{Answer}}}}}\end{gathered}[/tex]
[tex]{{ \large{ \orange{ \rm{{➥}}}}}} \rm \large \: \:5x \: = \: 5[/tex]
[tex]{{ \large{ \orange{ \rm{{➥}}}}}} \rm \large \: \:x \: = \: \cancel\frac{5}{-5} \\[/tex]
[tex]{{ \large{ \orange{ \rm{{➥}}}}}} \rm \large \: \:x \: = \: -1[/tex]
what are the names of four coplanar points
Answer:
the answer is Points P, M, F, and C are coplanar.
Step-by-step explanation:
I hope this helps
A restaurant wants to test a new in-store marketing scheme in a small number of stores before rolling it out nationwide. The new ad promotes a premium drink that they want to increase the sales of. 20 locations are chosen at random and the number of drinks sold are recorded for 2 months before the new ad campaign and 2 months after. The 90% confidence interval to estimate the true average difference in nationwide sales quantity before the ad campaign and after is (3.96, 28.79). Which of the following is the appropriate conclusion?
1) We are certain the average difference in sales quantity between after the ad campaign to before for all stores is between -3.83 and 1.83.
2) We are 95% confident that the difference between the average sales after the ad campaign and the average sales before the ad campaign is between-3.83 and 1.83.
3) The proportion of all stores that had a difference in sales between after the ad campaign to before is 95%.
4) We are 95% confident that the average difference in the sales quantity after to before of the stores sampled is between -3.83 and 1.83.
Answer:
2 or 4
Step-by-step explanation:
Help this is due today!!!!
Answer:
The second option: 3.5x+685[tex]\leq \\[/tex]85
Step-by-step explanation:
The addition fee is 6 meaning adding not subtracting. Cancel out the first and last one. Then, it says without going over. Meaning it could equal exactly $85. Which means [tex]\leq[/tex]. So it would be the second option.
3^8*__^8 = 12^__ Please help!!!!! I need urgent help!! Please!! I'll give you brainliest!!!!
Answer:
See below:
Step-by-step explanation:
Hello! My name is Galaxy and I will be helping you today :DD. I hope you are having a nice day.
So based on the question we need to do two steps, Rules of Exponents, and Solving. I'll go ahead and start with Exponential Rules first.
Rules of Exponents
The rules of exponents are simple, they boil down to a few things at this level of math:
+ To Multiply Exponents, we can add the Exponents of the Bases.
(Example: [tex]x^{2}*x^{3}=x^{5}[/tex])
+ To Divide Exponents, we need to subtract the Exponents of the Bases.
(Example: [tex]\frac{x^{5} }{x^3}=x^2[/tex])
Now that we know that, we can solve for the equation.
Solving
So, we need to solve for the blanks in this equation:
[tex]3^8*x^8=12^y[/tex]
**Where x and y are unknown.
So, first we know that for the multiplication of exponents, we need to add the exponent, so with that we know that it has to be 8 giving us our y.
Second of all, we know to multiple and solve for x we need to divide 12 by 3.
After doing that, and using basic math, we get x is equal to 4.
We can check our answers by inserting what we found into the equation:
[tex]3^8*4^8=12^{8}\\\\429981696=429981696[/tex]
Therefore, the answers are:
First blank is equal to 4, and the second blank is equal to 8.
We've checked our answers and they are correct!
Cheers!
What does 312,819 round to, to the nearest ten thousand?
Answer:
310,000
Step-by-step explanation:
6. Light travels about 180 million kilometers in 10 minutes. How far des trave
minute? How far does it travel in 1 second? Show your reasoning,
from Unit 2, Lesson 9.)
260 Student Edition
Grates in KM
Answer:
The light travels distance in 1 minute=18 million kilometers
The light travels distance in 1 second=0.3 million kilometers
Step-by-step explanation:
We are given that
Light travels total distance in 10 minutes=180 million kilometers
We have to find the distance travels by light in 1 minute and in 1 seconds.
By unitary method
Distance travel by light in 1 min=million kilometers=18 million kilometers
Distance travel by light in 1 min=18 million kilometers
We know that 1 minute=60 seconds
In 60 seconds, light travels distance =18 million kilometers
In 1 second, light travels distance = million kilometers
Hence, the light travels distance in 1 minute=18 million kilometers
The light travels distance in 1 second=0.3 million kilometers
Hope this helps, have a nice day/night! :D
HELP ASAP WILL MARK BRAINLIEST PLEASE!!
Express your answers in simplest form. An isosceles triangle has a base with a measure of u cm. If the triangle has a perimeter of 16 cm, what is the measure of one of its legs in terms of u?
The angles of a triangle add up to 180 degrees.
The second angle is 25 degrees larger than the smallest angle.
The third angle is 3 times as big as the smallest angle.
Find the measure of the smallest angle (in degrees)
You have 1000000 small cubes.
Each cube measures 1 inch on a side.
If you arranged the cubes on the floor to make a square, what would be the length of each side?
Answer:
1000 in
Step-by-step explanation:
Given
The dimension of the small cube is 1\ in.1 in.
No of the cubes is 10^6106
If the small cubes are arranged on the floor
The area of the cubes is
\Rightarrow 10^6\times 1^2\ in.^2⇒106×12 in.2
Given the figure below, find the values of x and z.
Answer:
x=5, z=107
Step-by-step explanation:
z=107 (vert opp angles)
z+13x+8=180 (adj angles on a str line)
107+13x+8=180
13x+115=180
13x=180-115
=65
x=65÷13
=5
What's the increasing & decreasing interval of f(x)=1/2|x+7|?
Answer:
Increasing interval is for all values of x that the function is defined by, in other words x is greater or equal to 0.
And there are not decreasing intervals.
Increasing interval is when the slope of the tangent at the function is positive.
Decreasing interval is when the slope of the tangent at the function is negative.
II. Find the mean, media and mode of each set of data.
1. 12, 12, 14, 16, 18, 20
2. 80, 83, 82, 85, 87, 93, 83, 85, 88, 80
3. 125, 100, 150, 125, 175
Answer:
1. Mean = 15.33
Median = 15
Mode = 12
2. Mean = 84.6
Median = 84
Mode = 80, 83, 85
3. Mean = 135
Median = 125
Mode = 125
Step-by-step explanation:
Hope it helps:)
I. Mean = Sum of all observations / No. of observations
=> 12 + 12 + 14 + 16 + 18 + 20 / 6
=> 92 / 6
= 15.33333.....
= 15.3
Mode = 12
Because 12 is occurring most frequently.
Median
Step 1 => Arrange the values in ascending order.
Step 2 => Then the middle observation will be the median of the data.
Here we will get 2 numbers as the median but since it is not applicable we will use another method.
12, 12, 14, 16, 18, 20
Find average of 14 and 16
14 + 16 / 2
30 / 2 = 15
Therefore Median of the data is 15.
The answers to other 2 question are there in the image attached.
How many different four-digit numbers can be formed with the numbers 7; 4; 5; 1; 2; 9; and 8?
Answer:
I believe it's 2401.
Step-by-step explanation:
7 x 7 x 7 x 7 = 2401
Answer:
2 answers.
Step-by-step explanation:
ANSWER 1: With Repetition
Numbers: 1,2,4,5,7,8
There are 4 digits __ __ __ __
1st digit can be filled by any of the 6 numbers.
Similarly 2nd, 3rd and 4th digits.
Hence each digit will have 6 possibilities.
Therefore no.of 4 digit numbers that can be formed are 6 x 6 x 6 x 6 = 1296
ANSWER 2: Without Repetition
4 digits __ __ __ __
Now the first digit can be filled by any of the six numbers. Therefore there are 6 possibilities
The second digit will have only 5 possibilities as one of the numbers gets used up by the 1st digit.
Similarly the 3rd and 4th digits will have 4 and 3 possibilities respectively.
Therefore no.of 4 digit numbers that can be formed are 6 x 5 x 4 x 3 = 360
HELP PLEASE!
I need the answer please!
Answer:
The triangles are similar in that the smaller triangle was dilated by a scale factor of 1/4 which means that the length of the missing side is 20m
Step-by-step explanation:
5.
Are the graphs of the lines in the pair parallel? Explain.
y = 3/7 + 11
–3x + 7y = 13
A. No, since the slopes are different.
B. No, since the y-intercepts are different.
C. Yes, since the slopes are the same and the y-intercepts are the same.
D. Yes, since the slopes are the same and the y-intercepts are different.
Answer:
D. Yes, since the slopes are the same and the y-intercepts are different.
Step-by-step explanation:
yes because both line have a slope of .857/2
...................................................................................................................................................
yes; both have a slope of 3/7
...................................................................................................................................................
Yes. They have the same slope.
The width of a rectangular painting is 3 in. less than the length. The area of the painting is 40 in ^2 .Find the length and width.
Answer:
Mark me as brainlist
Step-by-step explanation:
a) (h + 5)(2h + 8) is the expression for the combined area of the painting and frame
b) The combined area when h = 12 is 544 square inches
c) The combined area when h = 15 is 760 square inches
Solution:
Given that,
A frame that is 2.5 inches wide goes around the painting
The frame will go around all 4 sides of the painting.
That means that the length of each side of the painting will increase by 2.5 inches
Therefore,
The height of painting and frame is:
h = h + 2.5 + 2.5
h = h + 5
(2.5 inches on the top and the bottom)
Also given that,
Width of a rectangular painting is 3 inches more than twice the height
w = 3 + 2h
Now the width of painting and frame is:
w = 3 + 2h + 2.5 + 2.5
(Again, 2.5 inches on the top and the bottom)
w = 2h + 8
Thus the combined area of the painting and frame is:
B) Substitute h = 12 inches
Thus the combined area when h = 12 is 544 square inches
C) Substitute h = 15 inches
Thus combined area when h = 15 is 760 square inches
find a polynomial of degree 4 that has integer coefficients and zeros 3i and 4 multiplicity 2
Answer:
f(x) = x⁴ - 8x³ + 25x² - 72x + 144
Step-by-step explanation:
f(x) = (x-4)²(x+3i)(x-3i)
= (x²-8x+16)(x²+9)
= x⁴ - 8x³ + 25x² - 72x + 144
2/3(x-6)=6 what value does x have to be to get 6
Answer:
The X would have to be 12!
Step-by-step explanation:
Because 2/3 is 6, 6 x 2 = 12 - 6 = 6
Answer:
15
Step-by-step explanation:
Using gemdas you would have to work in the parenthesis first and 15-6 is 9 multiplied by 2/3 is 6
2. How many solutions are there to a quadratic equation? (Hint: Give your answer as it
relates to the x-axis
Heidi must pay 7.25% sales tax on her purchase of $25. Which expression can be used to calculate the amount of sales tax she must pay?
Answer: $1.81
Step-by-step explanation:
x=a(amount of money) * b(tax)
Solve this equation by completing the square 2 −12 + 36 = 44. Show your work. No other method will be accepted
Iḿ sorry I cannot be specific but it´s either 12.633 or 0.6.33
Sorry if it is not helpful
10.
Which of the following is the maximum value of the function y = −2x2 + 5?
A. 0
B. 5
C. 25
D. −2
Answer:
Step-by-step explanation:
Hello, the answer in this case would have to be 5 as the vertex of the lowest point of 0.
Therefore x would have to be 0.
Answer:
A. 0
Step-by-step explanation:
Use the formula x = − b /2 a to find the maximum and minimum.
( 0 , 5 )
Is p→q≡∼p∨q true or false?
Show that (p → q) ∨ (p → r) and p → (q ∨ r) are logically equivalent. By the definition of conditional statements on page 6, using the Com- mutativity Law, the hypothesis is equivalent to (q ∨ ¬p) ∨ (¬p ∨ r). ... This means that the conditional from the second-to-last column the last column is always true (T).
A piece of brass contains 1.66 grams of copper and 0.34 gram of
zinc. What is the mass of the piece of brass in grams?
Answer:
2.00 grams
Step-by-step explanation:
1.66 + 0.34 = 2.00
2.00 grams
what is 2:110 simplified
Answer:
fraction way:1/55
0Step-by-step explanation:
Help me for 100 points yessir thanks you
Answer:
Step-by-step explanation:
