14.76
12.3
*
1.2. =14.76
Answer:
14.76
Step-by-step explanation:
12.3 x 1.2=
12.3
x 1.2
--------
24.6
+123.0
---------
14.76
Consider the polynomial equation x(x − 3)(x + 6) (x – 7) = 0. Which of the following are zeros of the
equation? Select all that apply.
-7
-6
-3
0
3
6
7
Answer:
0, 3, -6, 7
Step-by-step explanation:
x(x − 3)(x + 6) (x – 7) = 0
so x = 0
or x - 3 = 0, x = 3
or x + 6 = 0, x = -6
or x - 7 = 0, x = 7
Answer: 0, 3, -6, 7
PLEASE HELP! I can’t figure this out.
Find M.
[tex] \gray \bigstar \boxed{\angle 1 + \angle 2 + \angle 3= 180°}[/tex]
Reason :-
Sum of angles of triangle is equal to 180°
Formula :-
sum = (no. of angles - 2) × 180°Sum = (3 - 2) × 180°Sum = 1 × 180°Sum = 180°[tex] \\ \\ [/tex]
So:-
[tex] \\ [/tex]
[tex] \sf \dashrightarrow\angle 1 + \angle 2 + \angle 3= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow m + 3m +(m - 35) = 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow m + 3m +m - 35= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 4m +m - 35= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 5m - 35= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 5m= 180 \degree + 35 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 5m=215\degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow m= \dfrac{215}{5} \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow m= \cancel \dfrac{215}{5} \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \bf \dashrightarrow m=43 \degree[/tex]
[tex] \\ \\ [/tex]
Verification :-
[tex] \\ [/tex]
[tex] \sf \dashrightarrow m + 3m +(m - 35) = 180 \degree[/tex]
put value of m
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 43 + 3(43) +(43 - 35) = 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 43 + 3(43) +(8) = 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 43 + 3(43) +8= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 43 +129+8= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \sf \dashrightarrow 43 +137= 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \bf \dashrightarrow 180 \degree= 180 \degree[/tex]
LHS = RHS
Hence verified!
Explaining the SAS Similarity Theorem Criteria
What information is necessary to prove two triangles are
similar by the SAS similarity theorem?
Answer:
side, angle and side
Step-by-step explanation:
hope this helps!
pls help me i need help and ill give a brainly or 40 points how u want it :)
some number minus -15 is equal to the product of the number and 9
Answer:
x = 15/8
Step-by-step explanation:
Let x = unknown number
Given:
some number minus -15 is equal to the product of the number and 9
⇒ x - -15 = x · 9
⇒ x + 15 = 9x
⇒ 15 = 9x - x
⇒ 15 = 8x
⇒ x = 15/8
Answer:
15/8
Step-by-step explanation:
Let's assume that the number is 'n'. Provided that number 'n' minus -15 is equal to the product of the number 'n' and 9. Simply jot down the above statement in mathematical form:
[tex] \implies\:\sf{\red{n \: - \: ( - 15) \: = \: n \: \times \: 9}}[/tex]
Now, simply solve the above equation.
[tex]\implies\:\sf{n \: + \: 15 \: = \: 9n}[/tex]
Take the like terms on one sides.
[tex]\implies\:\sf{9n \: - \: n \: = \: 15}[/tex]
Do the rest calculations.
[tex]\implies\:\sf{8n \: = \: 15}[/tex]
[tex]\implies\:\sf{\red{n \: = \: \dfrac{15}{8}}}[/tex]
Hence, the required value of n is 15/8.
Find the number of solutions of the equation 9x^2+x+1=0 by using the
Answer:
x =(2+√40)/18=(1+√ 10 )/9= 0.462
or:
x =(2-√40)/18=(1-√ 10 )/9= -0.240
Find the slope of the line that passes through the following two points: (3, -7) and (5, -15) Give your answer as a number, rounded to the nearest tenth, if necessary
Answer:
the slope should be -4
Step-by-step explanation:
to find the slope we use the equation y2 - y1/ x2 - x1
-15 - (-7) / 5 - 3
-15 + 7 / 2
-8 / 2
-4
Complete the table using this rule : 3x-2=y
Answer:
To find the x-intercept, substitute in 0 for
y and solve for x. To find the y-intercept, substitute in 0
for x and solve for y. x-intercept(s): (2^3,0) y-intercept(s):
(0,−2)
7/(2sqrt(3) + 2sqrt(5)) + 5/(3sqrt(2) + 8sqrt(5))
Answer:[tex]-\frac{1057√3-1137√5+30√2}{604}[/tex]
â = √
Step-by-step explanation:
This data set represents the lengths in inches of pieces of ribbon used in a project. What is the mean of this data set? {1/4, 1 1/3, 2/3, 1/4, 1/2}
Please answer if you know it because I only have until 8pm
Giving brainliest to whoever is right and each answer gives 30 points :)
Answer:
3/5
Step-by-step explanation:
I did this on the test and I got this specific answer correct :)
The required mean of the data set is 3/5, or approximately 0.6 inches.
What is mean?The mean of the values is the ratio of the total sum of values to the number of values.
Here,
To find the mean of the data set, we need to add up all the values and divide by the total number of values.
1/4 + 1 1/3 + 2/3 + 1/4 + 1/2 = 1/4 + 4/3 + 2/3 + 1/4 + 1/2 (we convert all fractions to have a common denominator)
= 2/3 + 4/3 + 1
We need to convert these mixed numbers to improper fractions:
= 3
Now we divide by the total number of values:
= 3 ÷ 5
= 3/5
Therefore, the mean of the data set is 3/5, or approximately 0.6 inches.
Learn more about mean here:
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Is the average amount spent on textbooks per semester by accounting majors significantly
different from the average amount spent on text books per semester by management majors?
Answer this question with a 90% confidence interval using the following data from random
samples of students majoring in accounting or management. Discuss the assumptions
A confidence interval is simply the range of estimates for an unknown parameter, which is defined as an interval with a lower bound and an upper bound.
What is a confidence interval?
Your information is incomplete as the data is not given. Therefore, an overview of the confidence interval will be given.
A 90% confidence interval means that the researcher is 90% confident that the values of the results will simply fall between the upper and lower limits if the procedure is repeated again.
You can find a confidence level for data by simply taking half of the size of the confidence interval, then multiplying it by the square root of the sample size, and then dividing by the sample standard deviation.
Finally, look up the resulting Z or t score in a table in order to find the level.
Learn more about confidence interval on:
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For a certain company, the cost for producing x items is 60x+300 and the revenue for selling x items is 100x−0.5x2.
The profit that the company makes is how much it takes in (revenue) minus how much it spends (cost). In economic models, one typically assumes that a company wants to maximize its profit, or at least wants to make a profit!
Part a: Set up an expression for the profit from producing and selling x items. We assume that the company sells all of the items that it produces. (Hint: it is a quadratic polynomial.)
Part b: Find two values of x that will create a profit of $50 .
The profit function of the company is the difference between the cost and the revenue functions of the company
The expression of the profit function is [tex]- 0.5x^2 + 40x - 300[/tex]The two values of x that creates a profit of $50 are x = 10 and x = 70How to set up the profit functionThe given parameters are:
C(x) = 60x + 300 --- the cost function
R(x) = 100x - 0.5x^2 ---- the revenue function
The profit function is calculated as:
P(x) = R(x) - C(x)
So, we have:
[tex]P(x) = 100x - 0.5x^2 - 60x - 300[/tex]
Rewrite as:
[tex]P(x) = - 0.5x^2 + 100x - 60x - 300[/tex]
[tex]P(x) = - 0.5x^2 + 40x - 300[/tex]
This means that the expression of the profit function is [tex]- 0.5x^2 + 40x - 300[/tex]
The two values of x that creates a profit of $50This means that:
P(x) = 50
So, we have:
[tex]- 0.5x^2 + 40x - 300 = 50[/tex]
Subtract 50 from both sides
[tex]- 0.5x^2 + 40x - 350 = 0[/tex]
Multiply through by -2
[tex]x^2 - 80x + 700 = 0[/tex]
Expand
[tex]x^2 - 70x - 10x + 700 = 0[/tex]
Factorize
[tex]x(x - 70) - 10(x - 70) = 0[/tex]
Factor out x - 70
[tex](x - 10)(x - 70) = 0[/tex]
Solve for x
x = 10 or x = 70
Hence, the two values of x that creates a profit of $50 are x = 10 and x = 70
Read more about profit functions at:
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pleaseeeeee helppppp
Answer:
240 ounces is your answer
What number is
35% of 400?
I have the answer, just need the process
Answer:
Step-by-step explanation:
400 * 35% = 400 * 35/100 = 4 * 35 = 140
3 x − 7 y = − 17 determine slope
is -6.41 a rational number
Answer:
It is, in fact, a rational number.
Evaluate the expression. Give your answer in simplest form. 6/7 - 3/5=
Answer:
9/35
Step-by-step explanation:
To answer this question, you will need to find a common denominator.
The lowest common denominator between 7 and 5 is 35.
6/7 is equal to 30/35 and 3/5 is equal to 21/35
Use these numbers instead.
30/35 - 21/35 = 9/35
This number cannot be reduced any further, so it is the answer.
Answer:
9/35
Step-by-step explanation:
What whole numbers lie between 39
Answer: none
Step-by-step explanation: there are no WHOLE numbers between 39
What is the expression for f(x) when we rewrite 36^x•6^x-2 as 6^f(x)
Answer:
X
Step-by-step explanation:
[tex]36 {}^{x} (6 {}^{x - 2} )[/tex]
[tex]36 {}^{x} ( \frac{6 {}^{x} }{6 {}^{2} } )[/tex]
[tex]36 {}^{x} ( {6}^{x} ) \frac{1}{6 {}^{2} } [/tex]
[tex]6 {}^{2} (6 {}^{x} )6 {}^{ - 2} [/tex]
[tex]6 {}^{x} [/tex]
F(x)=x.
Answer: f (x) = 3x-2
Step-by-step explanation:
please leave a real answer it would be very helpful
The polynomial that represents the length is:
h(x) = 11x + 1.
How to find the length?
We know that the area of the top surface is given by:
f(x) = 66x^2 + 17x + 1
And the width of the top surface is:
g(x) = 6x + 1.
We can assume that the length, h(x), is another polynomial of degree 1, so we can write:
h(x) = a*x + b
Now, the area is the product of the width and the length, so we have:
f(x) = g(x)*h(x)
f(x) = (6x + 1)*(ax + b)
= 6ax^2 + (6b)x + (a)x + b
= (6a)x^2 + (6b + a)x + b
Now let's compare this with f(x), correspondent coefficients must have the same value.
66x^2 + 17x + 1 = (6a)x^2 + (6b + a)x + b
Then we have:
66 = 6a
17 = 6b + a
1 = b
From the first equation we have:
66/6 = a = 11
And from the third:
b = 1
Then the length is:
h(x) = 11x + 1.
If you want to learn more about polynomials, you can read:
https://brainly.com/question/4142886
A carpenter wants to cut an 84 inches long board into two -pieces such that one piece is twice as long as the other piece. Set an equation and find the length of each piece.
Answer:
The shorter piece is 28 inches
The long piece is 56 inches
Step-by-step explanation:
First, we need to write an equation:
-> Let x be the shorter piece after they are cut.
84 inches = x + 2x
84 inches = 3x
28 inches = x
x = 28 inches
Now we will find the length of each piece,
-> The shorter piece is 28 inches
[] x = 28 inches
-> The long piece is 56 inches
[] 2x = 2(28) = 56 inches
Checking work:
56 + 28 = 84
-> This solution should work
ABC DEF. The area of DEF is given. Find the area of ABC.
Answer:
C. 240 in^2
Step-by-step explanation:
is it stated that two triangles are similar.
If they are similar then their area must be proportional too.
The side lengths' proportion is :
12/60 = 1/5 this can be used to find the area of the smaller triangle, ABC
Let x represent the are of triangle ABC
1/5 = x/1200 cross multiply both sides
5x = 1200 divide both sides by 5
x = 240 since the area is indicated with square value so the answer is
C. 240 in^2
Answer:
b
Step-by-step explanation:
Please help me with this. Find the measurement of angle 4
Answer:
80
Step-by-step explanation:
The rule for triangles is that their angles must add up to 180. 30+50=80 and 180-80=100 so the angle next to 4 is 100. Since they are on a straight line the angle is 180 and 180-100 is 80
brainliest pls hardstuck ambitious.
he quad
B
3. You shoot a pool ball, and it rolls back to where it started (as shown
in the diagram). The ball bounces off each wall at the same angle at
which it hits the wall.
a. The ball hits the first wall at an angle of 53. So
MZAEF=mZBEH=53º.
What is mZAFE? Show your work.
ga
b. What is mZFEH?
c. What is mZEHG?
d. Is quadrilateral EFGH a parallelogram? Explain your reasoning,
ex and
Answer: its C
Step-by-step explanation: you measer MZAEF and mZBEH which is 53+53
these numbers form an addition and subtraction fact family for 6,7,13 here the choices 7+13=20 13+7=20 13-13=0 13-0=13 and 7+0=7 6+0=6 13-0=13 13-13=0 and 7+6=13 6+7=13 13-6=7 13-7=6 7+6=13 13=7+6 13-6=7 7=13-6
Answer:
7+6=13 6+7=13 13-6=7 13-7=6 7+6=13 13=7+6 13-6=7 7=13-6bStep-by-step explanation:
this involves any number that when subtracted or added it gives each other the values of the family
Example:-7 + 6 equals 13, 13 - 6 equals 7,
so you see how they relate,please mark me brainiest
^_^
Answer:
7+6=13 6+7=13 13-6=7 13-7=6 7+6=13 13=7+6 13-6=7 7=13-6b
Step-by-step explanation:
I studied. :)
Which is larger, 0.8 or 71/100?
Answer:
0.8
Step-by-step explanation:
Convert 71/100 into a decimal
.71
0.8 > .71
Sam has $50 in an account that earns 5% interest compounded annually.
To the nearest cent, how much will he have in 3 years?
Answer:
$57.50
Step-by-step explanation:
50×5/100×3
=7.5
50+7.5
=57.50
Solve for x in the equation x2-12x+36 = 90-
X = 6+3 V10
O x=6+27
12+3V22
O
X = 12+3 V10
X=
Answer:
5.4
Step-by-step explanation:
x2-12x+36 = 90
=> 2x - 12x + 36 = *90
=> 2x - 12x = 90 - 36
=> -10x = 54
=> (-10x)/-10 = (54)/-10
=> x = 5.4
I am 24 years old. My age is 2 less than twice my sister's age.
MAKE THE SOLUTION UNDERSTANDABLE NEED IT RN.
Answer: Therefore, the age of my sister is 13 years.
Step-by-step explanation:
Let the age of my sister is x yeas.
Then according to question..
24 = 2x -2
Or, 2x=26
or, x= 26/2
x= 13
Answer:
13
Step-by-step explanation:
you are two less so therefore you add two to 24 making it 26. then you divide by 2 giving you 13
Please help I will give brainliest and points, I cannot figure this out I also need the work please please please
Answer:
~Male Y/n here~ I think that your A will be 77 feet in distance and your B would be 25 feet above ground.
(Hope this helps!)