Answer:
a) 186
b) 6
c) 42
Step-by-step explanation:
[tex]f(x) = m {x}^{2} - 6x - 3[/tex]
f'(1) = 12
f'(x) = 2mx - 6
12 = 2(1)m - 6
12 - 6 = 2m
[tex] \frac{2m}{2} = \frac{6}{2} [/tex]
[tex]m = 3[/tex]
[tex]f(x) = 2 {x}^{2} - 6x - 3[/tex]
a)
f(9) = 3( 9)^2 - 6(9) - 3
f(9) = 186
b)
f( 3) = 3( 3)^2 - 6( 3) - 3
f(3) = 6
c)
f( - 3) = 3( - 3)^2 - 6( - 3) - 3
f(-3) = 42
Answer number 15 please. Thank you
Answer:
I got 84% increase
Step-by-step explanation:
Subtract final value minus starting value
Divide that amount by the absolute value of the starting value
Multiply by 100 to get percent increase
Conor reads 3 pages every 4 minutes. At this rate, how many pages can he read in 30 minutes?
answer
22.5pages
example: 30÷4*3
what two numbers add up to -12 and multiply to 36
Answer:
-6 and -6
Step-by-step explanation:
[tex](-6)+(-6)=(-12)\\(-6)(-6)=36[/tex]
Adding a negative is the same as subtracting.
Multipling a negative by a negative is the same as multiply two even numbers. The negative signs cancel each other out.
Car insurance companies want to keep track of the average cost per claim. The current data in use for Auto Insurance R Us is an average of $2,200 for each claim with a standard deviation of $500. With this average, the company can stay competitive with rates but not lose money. However, the statistician for the company believes that the cost of the average claim has increased. He pulled 40 recent claims and found the average to be $2,350. Which most restrictive level of significance would suggest that the company should raise rates
Answer:
The answer is 5% because its correct lol
Step-by-step explanation:
The most restrictive level of significance that would suggest the company should raise rates is a p-value less than or equal to 0.01.
What is hypothesis testing?Hypothesis testing is a statistical method that is used to make decisions about a population based on a sample of data.
It involves testing a null hypothesis (H0) against an alternative hypothesis (Ha) using statistical techniques.
We have,
To determine if the increase in the average cost per claim is statistically significant, we can perform a hypothesis test.
Let's use a one-sample t-test, where:
Null hypothesis (H0): The average cost per claim is still $2,200.
Alternative hypothesis (Ha): The average cost per claim is greater than $2,200.
We can use a t-test because we have a sample mean, sample size, and population standard deviation.
The test statistic is calculated as:
t = (sample mean - hypothesized mean) / (standard deviation/√ (sample size))
Plugging in the values given, we get:
t = (2350 - 2200) / (500 / √(40))
t = 4.38
Using a t-table with degrees of freedom (df) = 39 (sample size - 1), we can find the p-value associated with this test statistic.
At the 0.01 level of significance (most restrictive level), the critical t-value is 2.704.
Since our calculated t-value is greater than the critical t-value, we reject the null hypothesis and conclude that there is evidence to suggest that the average cost per claim has increased.
Therefore,
The most restrictive level of significance that would suggest the company should raise rates is a p-value less than or equal to 0.01.
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A student said that the sum of the measures of a pair of adjacent angles must equal 180°. Is the student correct?
Choose the correct answer and explanation
OA) The student is correct; adjacent angles must share a common vertex and sum to 180°
OB) The student is not correct; two adjacent angles form a right angle, so the sum is always equal to 90°
OC) The student is correct; any pair of adjacent angles forms a straight line, and the angle measure of a straight line is 180°
D) The student is not correct; a pair of adjacent angles must share a common vertex, share a common side, and not overlap. They
may equal 180° but do not have to
Answer:
Step-by-step explanation:
D) The student is not correct; a pair of adjacent angles must share a common vertex, share a side, and not overlap have to
Solve the quadratic function by completing the square. what are the missing pieces in the steps? –32 = 2(x2 10x) –32 = 2(x2 10x 25) 18 = 2(x 5)2 9 = (x 5)2 ± = x 5 x = –2 or x =
An equation is formed of two equal expressions. The missing pieces of the solution of the quadratic equation are 50, 3, and -8.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
To fill the missing piece of the solution of the quadratic equation, you need to balance each of the equations. Therefore, the solution to the problem can be written as,
[tex]-32 = 2(x^2 + 10x)\\\\-32 + 50 = 2(x^2 + 10x + 25)\\\\18 = 2(x + 5)^2\\\\9 = (x + 5)2\\\\\pm 3= x + 5\\\\x = -2\ \ {\rm or}\ \ x = -8[/tex]
Thus, the solution of the quadratic equation is -2 or -8.
Hence, the missing pieces of the solution of the quadratic equation are 50, 3, and -8.
Learn more about Equation:
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Find the length of the third side. If necessary, round to the nearest tenth.
18
30
Answer:
24
Step-by-step explanation:
[tex]let \: the \: length \: of \: \: the \: third \: side \: = y \\ using \: pythaoras \: theorem \: \\ 30 {}^{2} = y { }^{2} + 18 {}^{2} \\ y {}^{2} = 30 {}^{2} - 18 {}^{2} \\ y {}^{2} = 900 - 324 \\ y {}^{2} = 576 \\ y = \sqrt{576} \\ y = 24 \\ lenht \: of \: the \: third \: side = 24[/tex]
what is the following states of the pythangorean theorom triangles
What is the range of the data set? 32, 21, 88, 64, 88, 107, 101 enter your answer in the box.
Work out length of x
to 3 Significant Figures
image not drawn accurately
HURRY UP TO ANSWER I HAVE 10 MINUTES REMAINING BEFORE I HAVE TO ANSWER
Answer:
3.32
Step-by-step explanation:
[tex]4.7 ^2 = 22.09[/tex]
[tex]22.09/2 = 11.045[/tex]
then we can find the square root, [tex]\sqrt{11.045} = 3.32[/tex]
now we can check our answer:
[tex]a^2 + b^2 = c^2[/tex]
[tex]3.32^2 + 3.32^2 = 4.7^2[/tex]
[tex]11.0224 + 11.0224 = 22.0448[/tex]
and [tex]\sqrt{22.0448} = 4.6951[/tex] or 4.7
Hannah is experimenting with a new drawing program on her computer. She created quadrilateral MATH with coordinates M(1, 2). A(-5, 3), T(- 6,-3), and H(0,- 4). Hannah believes that she has created a square. Prove that Hannah is correct.
Answer:
It is a square, Hannah is a G.
Step-by-step explanation:
You can plug it in for visual, see attachment. You can see that it is a bit rotated square.
But real proof should be done with the points.
For it to be square all sides need to equal each other.
What's the x distance of M and A?
It is 1-(-5) = 1+5 = 6
What is the x distance of H and T?
It is 0-(-6) = 0+6 = 6
What is the y distance of M and H?
It is 2-(-4) = 2+4 = 6
What is the y distance of A and T?
It is 3-(-3) = 3+3 = 6
All are 6 so all sides are equal so it is a square.
PLS HELP!!! No links pls and Ty <333
Sid is making a pizza. The diameter of the pizza is 15 inches.
What is the area of the pizza (use 3.14 for pi and round to the nearest
tenth)?
Answer:
176.6 inches.
Step-by-step explanation:
15 is the diameter, so 15/2 is 7.5 which is the radius
A of a circle is 3.14 x r^2
7.5^2=56.25
56.25 x 3.14=176.625
rounded makes it 176.6
What is 3185 divided by 1625?
Answer:
1,96
Step-by-step explanation:
= 3185 ÷ 1625
= 1,96
#off
#thankyou:))
Carly typed 180 words in two minutes enter the number of words Carly typed in five minutes at this rate
Answer:
the answer is 450
Step-by-step explanation:
180 × 2= 360. but that only gives us 4 mins we need one more min. so we divide 180 by 2 and get 90. we add 90 to 360 and get an answer of 450
How to subtract mixed numbers with unlike denominators?.
To subtract mixed numbers with different denominators, follow these steps:
1. Rename the fractions using a common denominator.
2. Subtract whole numbers from whole numbers. You might need to regroup first.
3. Subtract fractions from fractions.
4. Simplify, if needed.
Let's try it with [tex]2\frac{3}{5}-1\frac{1}{4}[/tex]
First, rename the fractions using a common denominator. The least common denominator of these fractions is 20. Multiply to make equivalent fractions with 20 as the denominator.
[tex]\frac{3x4}{5x4}=\frac{12}{20}[/tex] [tex]\frac{1x5}{4x5}=\frac{5}{20}[/tex]
Rewrite the problem and subtract the whole numbers.
[tex]2\frac{12}{20}-1\frac{5}{20}=1\frac{?}{?}[/tex]
Now, subtract the fractions. Subtract the numerators and keep the denominator the same.
[tex]2\frac{12}{20}-1\frac{5}{20}=1\frac{7}{20}[/tex]
This answer is already in its simplest form, so there is no need to simplify it.
What is the Equivalent of 9/5 and 18/10?
Answer:
Writing 9/5 as a decimal using the division method. To convert any fraction to decimal form, we just need to divide its numerator by denominator. Here, the fraction is 9/5 which means we need to perform 9 ÷ 5. This gives the answer as 1.8.
Step-by-step explanation:
hope this helps if not let me know
HELP PLS WILL GIVE BRAINLIEST
Answer:
The answer is B and D :)
Step-by-step explanation:
It is b because the x value is getting bigger while the y value is getting smaller. :)
Have an amazing day!!
Please rate and mark brainliest!!
Answer:
Options B and D
Step-by-step explanation:
Step 1: Determine what negative association is
Negative association basically means that the best-fit line for the scatter plot would be in a downwards slope which means that it has a negative association.
In the given examples, Option A wouldn't work because we can see that the best-fit line would be going up which is a positive association. Option B would work because we see the downward slope. Option C wond't work for the same reason as Option A. And finally Option D would work since we have a downward slope.
Answer: Options B and D
please help
photo down below
Answer:
x=102⁰
Step-by-step explanation:
180⁰-47⁰-31⁰=180⁰-78⁰=102⁰
The expression (8+8+8+8+8)−(6+6+6+6+6) is equal to 10 .
Use any of the operations below to create another expression that is equal to 10 , but only uses the numbers 6 and 8 .
Addition (+)
Subtraction (−)
Multiplication (⋅)
Division (÷)
Squaring ( )2
Square Root ( )−−√
6²-(8+8)
Solution:There are plenty of expressions with numbers 6 and 8 that are equivalent to 10.Here is one of them:6²-(8+8)→36-16=10Hope it helps.
Do comment if you have any query.
what is the distance between the points (-7, -8) & (2, -8)
Answer:
5 units cause that ordinates are same abssisae is different
A paper company needs to ship paper to a large printing business. The paper will be
shipped in small boxes and large boxes. Each small box of paper weighs 50 pounds
and each large box of paper weighs 80 pounds. A total of 19 boxes of paper were
shipped weighing 1280 pounds altogether. Determine the number of small boxes
shipped and the number of large boxes shipped.
Answer:
x = 8
y = 11
Step-by-step explanation:
Total small box weight = 50x [x being the number of small boxes]
Total large box weight = 80y [y being the number of large boxes]
Total boxes = x+y = 19
Total weight = 1280
Determine x and y.
You know 2 equations. One for weight and another for number of boxes each.
1280 = 50x +80yx+y = 19Rewrite second equation:
x+y=19
y=19-x
You have to plug in one into another.
1280 = 50x + 80(19-x)
Solve for x
1280 = 50x + 1520 - 80x
-240 = -30x
x = 8
Solve for y by plugging in x into one of the equations:
8+y = 19
y = 11
All of the following are considered migration push factors EXCEPT...
A. Employment Opportunity
B. Violence or war
C. Outsourcing
D. Pollution
Answer:
c. outsourcing
Step-by-step explanation:
just didbthat
Answer:
b
Step-by-step explanation:
because it shows it talks about factor
Find the least number 1008 would need to be multiplied by to give a square number.
Step-by-step explanation:
7 to make a perfect square
Can you help finish my trigonometry maze?? And show me the equation for each I know some of them are finding angles and I’m stuck please help.
Using the trigonometric ratios of sine, cosine and tangents will help solve navigate the maze.
What is trigonometry?Trigonometry is the study of the relationships between side lengths and angles of triangles.
The three main trigonometry functions are sine, cosine and tangent.
For right-angled triangles, the ratios of the three trigonometric functions are:
Sine = opposite/hypotenuseCosine = adjacent/hypotenuse Tangent = opposite/adjacentFor the given maze, the missing measures are found using the angles and the side given.
For example:
tan 52 = 40/x
x = 40/tan 52 = 31.3
Therefor, using the trigonometric ratios will help solve navigate the maze.
Learn more about trigonometry at: https://brainly.com/question/24236629
What type of polygon is needed to use the Pythagorean theorem?
A. Acute triangle
B. Right triangle
C. Rectangle
D. Isosceles triangle
Ahh, yes, the Pythagorean Theorem!
The Pythagorean Theorem is applied to right triangles. Only right triangles. So our answer would be B.
I hope this makes sense. I can continue to expand on this if you like.
-Toremi
The correct answer is option (B) Right triangle.
What is a right triangle?A triangle with one of its angles measuring 90° is known as a right triangle.
The Pythagorean theorem is applicable only to a right triangle.
The Pythagorean theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the legs of the triangle.
Hence, the correct answer is option (B) Right triangle.
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A cone has a volume of 1,570 in. If
the height of the cone is 15 inches,
calculate the radius of the cone.
Step-by-step explanation:
1/3×π×r^2×15=1570. r^2=1570×21/(22×15);r=10.00
Which shows one way to determine the factors of 12x3 – 2x2 18x – 3 by grouping? 2x2(6x – 1) 3(6x – 1) 2x2(6x – 1) – 3(6x – 1) 6x(2x2 – 3) – 1(2x2 – 3) 6x(2x2 3) 1(2x2 3)
The factor of the given expression 12x^3 - 2x² + 18x-3 is as follows (6x-1)(2x²+3).
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given expression is
12x^3 - 2x² + 18x-3
= 2x²(6x-1) + 3(6x-1)
= (6x-1)(2x²+3)
Learn more about quadratic equations;
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Answer:
A.
Step-by-step explanation:
Please help me asap with my grade 11 trigonometry math! I'll give brainliest, please help, thank you. *URGENT*
Answer:
37.8579
This value is approximate and rounded to four decimal places
===============================================
Explanation:
The tangent function is being applied to some unknown angle x. To isolate x, we undo whatever tangent is doing. So we apply the inverse function. Specifically the inverse tangent function. This is also known as "arctangent" and your calculator most likely shows it as a button with a "-1" exponent above the "tan"
So apply the arctangent to both sides to get
tan(x) = 0.7773
arctan(tan(x)) = arctan(0.7773)
x = 37.8579
heres a diagram to help
ANSWER ASAP!! 40 POINTS!! what is the 10% of the number 90,500
We start with 90,500
to get 10% we multiply it by .10
90,500 * .10 =
9050
Answer:
D
Step-by-step explanation:
A door's shape is made by combining a rectangle and a semicircle. What is the area of the door?
Will mark brainlyest!!!
Answer:
I am not sure but I think the answer is 34.28
Step-by-step explanation:
Sorry if that is the wrong answer
Hope this helped
Answer:
34.28 ft^2
Step-by-step explanation:
Area of rectangular portion 7 x 4 = 28
area of semicircle with radius 2
1/2 * pi (2)^2
Added together = 34.28 ft^2