Answer:
q=8xp+4p²-12x
Step-by-step explanation:
its easy
PLEASE HELP I HAVT A 25 IN MATH
A college student shovels driveways to cover his weekly expenses. The student charges $7 for each hour he spend shoveling driveways
Which 2 unknown quantities in this situation are related?
A. The number of hours the student spends shoveling driveways
B. The number of driveways the student shovels
C. The amount of money the student earns
D. The number of college students shoveling driveways
Answer:
B and D.
Step-by-step explanation:
Hope this helps! :D
Harvey is studying the polynomial f(x) = (2x - 3)(x - 4)(x2 + 3) and determines that the polynomial has four real roots. Is
Harvey's statement CORRECT?
A. No, the polynomial f(x) has 2 real roots and 2 complex roots when solved.
O B. Yes, the polynomial f(x) has 4 x-intercepts so the function has 4 real roots.
C. Yes, the polynomial f(x) has a degree of 4 so the function has 4 real roots.
OD. No, the polynomial f(x) has 3 real roots because there are 3 factors.
Answer:
It is A, I highly suggest you should read my explanation.
Step-by-step explanation:
(2x - 3)(x - 4)(x^2 + 3)
Exponent of 2x = 1
Exponent of x = 1
Exponent of x^2 = 2
Add them all together to get the degree. 1 + 1 + 2 = 4
Now we can tell that the polynomial can have 1,2,3,4, or no roots at all. The max number roots it can have is 4
To see the number of roots it has, we have to set each part equal to 0
2x - 3 = 0
Add 3 to both sides
2x - 3 + 3 = 0 + 3
2x = 3
Divide both sides by 2
2x/2 = 3/2
x = 3/2 or 1.5
Next,
x - 4 = 0
Add four to both sides
x - 4 + 4 = 0 + 4
x = 4
Then,
x^2 + 3 = 0
Subtract 3 from both sides
x^2 + 3 - 3 = 0 - 3
x^2 = -3
Find the square root of both sides
sqrt(x^2) = sqrt(-3)
x = i*sqrt(3), -i*sqrt(3)
Those are imaginary numbers, therefore there are not real.
The real roots are x = 3/2, 4
Harvey stated that this equation has four real roots. We can cross options B and C out since they stated he was correct.
It is not D because finding a square root of a number gives two answers; the positive and negative version, so it will have two solutions. There were only two real roots and the other two roots are complex roots.
That leaves us to option A, which states that there are 2 real and 2 complex roots. It is correct
David has $40,000 in a savings account. The interest rate is 5% per year. How much
interest will he earn in 9 months?
Answer:
$4,537.55
Step-by-step explanation:
I did it on paper and you gotta calculate it, Hope this helps!
The perimeter of a triangle is 19 units. The second side is four units longer than the first side and the third side is three times the length of the first side. What are the lengths of the sides?
Answer:
First: 3 units Second: 7 units Third: 9 units
Step-by-step explanation:
19=x+(x+4)+3x
19=5x+4
15=5x
x=3
first side is 3 units
3+4=7
second side is 7 units
3*3=9
third side is 9 units
At a party, the amount of people who ate meatballs was 9 less than 3/5 of the total number of people. The number of people who ate meatballs was 24. How many people where at the party? Write an equation to help you solve the problem. Let x represent the number of people at the party.
Answer:
there were a total of 55 people at the party.
Step-by-step explanation:
In order to create the equation representing this scenario we first need to represent each step in a formula. Since the total number of people is represented by x we can multiply 3/5 by x and subtract 9 from that. This would then be equal to 24 like so...
3/5x - 9 = 24
Now that we have the formula we can perform opposite operations to isolate x and solve for it.
3/5x - 9 = 24 ... add 9 on both sides
3/5x = 33 ... divide both sides by 3/5
x = 55
Finally, we can see that there were a total of 55 people at the party.
Help me work out the equation of the line on this graph. I'll give out the brainiest!
Answer:
y=-1/4x+2
Step-by-step explanation:
The equation would be y=-1/4x+2 because the rise is -1 and the run is 4 (you could also say the run is -4 and the rise is 1. It doesn't really matter). The line also crosses the y axis at 2, which means that 2 is the y-intercept. :)
Answer:
y = (-1/4)x +2
Step-by-step explanation:
Having the actual graph is an easy way to calculate the equation of the line. Since the format is y = mx +b we just need to plug in numbers.
b = y-intercept
m = slope
We can automatically see that the y-intercept is 2, so b = 2. To find the slope we just calculate rise over run. The line is decreasing 1 unit for every 4 units it is "running". Therefore, -1/4 is your slope.
b = 2
m = -1/4
Now, all we need to do is plug in numbers.
y = (-1/4)x +2
how to simplify algebraic fractions
Answer:
You typically apply the same rules as you would for 'regular' fractions.
So you can multiply numerator and denominator by the same value if needed. If you want to add fractions you must make sure the denominators are the same, etc.
The value you multiply by can be an algebraic expression.
SMART PPL PLEASE HELP ME
Answer:
last one (d)
Step-by-step explanation:
adding subtracting or dividing is not how you use a growth factor(what my school calls a percentage in a decimal form).
1= x/25 please show your work
Answer:
Your question is
1
=
2
5
1=\frac{x}{25}
1=25x
Solve
1
Multiply all terms by the same value to eliminate fraction denominators
2
Simplify
Multiply the numbers
Cancel multiplied terms that are in the denominator
Move the variable to the left
=
2
5
Solution
=
2
5
Can someone help me with 9,10, and 11 please you don’t have to do all of them just atleast one for me
Hi! So what you will need to know is pythagorean theorm.
What the theorm basically says is a^2 + b^2 = c^2.
-- The (a,b,c) are referring to the sides of the triangles (3 letters for 3 sides).
Take note that "c" is always the side opposite of the right angle.
The other known side could be "a" or "b"
Taking a look at problem 9, identify the "c" value. The "c" value would be 35.
Then indentify the value of "b" or "a". "a" would = 20.
Plug it into the equation:
20^2 + b^2 = 35^2
400 + b^2 = 1225
solve for b.
1. subtract 400 from both sides.
b^2 = 825
b = [tex]\sqrt{825}[/tex]
you could solve for the square root but it would give a decimal numbers but I'm not sure what the teacher is looking for.
What is 5 - 5/7 = ? (Simplfy)
What is the solution to the equation?
x/7 +8 = 4
Enter your answer in the box.
x=
PLEASE ANSWER NOW
Answer:-28
Step-by-step explanation:
I WILL MARK BRAINLEST!!!!!!!!!!!!!!!!!!!
Which statements accurately describe religion in Africa? Select three options.
Folk religions are animistic.
Folk religions are based on traditions.
The major religions are Christianity and Islam.
Islam is primarily practiced in the eastern region of Africa.
Christianity is primarily practiced in the northern region of Africa.
Answer:
Folk religions are based in tradition
Folk religions are animistic
The major religions are christianity and islam
Correct statement regarding religion in Africa is that the major religions are Christianity and Islam.
At some point, Africans practiced traditional religions where they worshipped multiple gods and held deep reverence for their ancestors. This changed as Islam and Christianity took over the continent.
Islam was spread around Africa by:
wars of conquest in Eastern and Northern Africa trade and education in Western AfricaChristianity came later when:
Europeans colonized AfricaMissionaries held considerable influence with the colonial powers and so convinced many to join Christianity.Therefore, We can say in conclusion that due to Muslim and European incursions in Africa, the major religions became Islam and Christianity.
Learn more about Africa here:
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Three numerical expressions that are equivalent to (0.0004) x (0.005)
Answer:
Numerical expression 1
[tex]\frac{4}{10000} * \frac{5}{1000} = \frac{20}{10000000} = \frac{1}{500000}[/tex]
Numerical expression 2
[tex]\frac{1}{50000} = 0.2 * 10^{-4} = 2 * 10^{-5}[/tex]
Numerical expression 3
[tex]1 : 50000[/tex]
Step-by-step explanation:
Numerical expression 1
[tex]\frac{4}{10000} * \frac{5}{1000} = \frac{20}{10000000} = \frac{1}{500000}[/tex]
Numerical expression 2
[tex]\frac{1}{50000} = 0.2 * 10^{-4} = 2 * 10^{-5}[/tex]
Numerical expression 3
[tex]1 : 50000[/tex]
Shaq wants to buy a pair of sunglasses that is 35% off. The original price is $74. What is the amount of discount ( rounded to the nearest penny) ? What is the sale price? ( rounded to the nearest penny) .
Answer:
the new price is 25.9
Step-by-step explanation:
what is the equation of 1. -3x - 5= 16 x=?
Answer:
1. -3x - 5= 16
-16-5=3x
x=-21/3=-7
How far is the portion of her route from D to F? Round to the nearest whole number. Explain.
Answer:
DF = 1213ft
Step-by-step explanation:
click the photo and help me please
Answer:
5^10
Step-by-step explanation:
Hope I helped!
Caroline uses 9.1 pints of blue paint and white paint to paint her bedroom walls. 1 4 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?
Answer:
6.83 pints
Step-by-step explanation:
The first step is to calculate the volume of the blue paint
= 9.1 × 1/4
= 2.275
Therefore the volume of the white paint can be calculated as follows
= 9.1 - 2.275
= 6.83
Hence the volume of white paint that Caroline used to paint her bedroom walls is 6.83 pints
A parking lot has 25 empty spaces. If the percentage is 80, how many spaces are there in total?
Answer:
31
Step-by-step explanation:
25/0.80=31.25
(You cant have a quarter of a parking space.)
Lin's father is paying for a $20 meal. He has a 30%-off coupon for the meal. After the discount, a 8% sales tax is applied.
What does Lin's father pay for the meal? Just type the number answer (without the dollar sign), and be prepared to explain or
show your reasoning.
Answer:
15.12
Step-by-step explanation:
Cost of meal = $20
Discount (coupon) = 30%
Amount of discount = 30% of $20
= 30/100 * 20
= 0.3 * 20
= $6
Amount paid after discount= initial cost of meal - discount
= $20 -$6
= $14
Sales tax =8%
Amount of sales tax = 8% of $14
= 8/100 * 14
= 0.08 * 14
= $1.12
Total amount paid = Amount paid after discount + Amount of sales tax
= $14 + $1.12
= 15.12
Which of the following describes the graph of y- V8x--64 - 5 compared to the parent cube root function?
O stretched by a factor of 2 and translated 64 units right and 5 units down
O stretched by a factor of 8 and translated 8 units right and 5 units down
O stretched by a factor of 2 and translated 8 units right and 5 units down
O stretched by a factor of 8 and translated 64 units right and 5 units down
Answer: option 4
Step-by-step explanation:
The transformation of the parent function is stretched by a factor of 2 and translated 8 units right and 5 units down
How does the transformation of a function happen?The transformation of a function may involve any change.
Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs), etc.
If the original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:
Horizontal shift (also called phase shift):
Left shift by c units: y=f(x+c) (same output, but c units earlier)
Right shift by c units: y=f(x-c)(same output, but c units late)
Vertical shift:
Up by d units: y = f(x) + d
Down by d units: y = f(x) - d
Stretching:
Vertical stretch by a factor k: y = k × f(x)
Horizontal stretch by a factor k: y = f(x/k)
Given data ,
Let the parent function be represented as f ( x )
Now , the value of f ( x ) = ∛x
And , the given function is y = ∛ ( 8x - 64 ) - 5
On simplifying , we get
Taking 8 as the common factor , we get
y = ∛ 8 ( x - 8 ) - 5
Now , the cube root of 8 is 2
So , y = 2∛(x - 8 ) - 5
The transformed function is y = 2∛(x - 8 ) - 5
And , the transformation is a vertical stretching by a factor of 2
And , a horizontal right shift by 8 and a vertical down shift by 5
Hence , the transformation of function is stretching by a factor of 2 and translated 8 units right and 5 units down
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WILL MARK BRAINLIEST PLS HELP
If you are trying to find out the most popular movie for 2020, which of the following should you do? *
Ask every adult sitting in the movie theatre
Survey every fifth person walking out of a movie theatre
Ask the students in your homeroom at school
Survey every tenth person in the mall food court
Answer:
D
Step-by-step explanation:
what is the value of the discriminant? 4x2+15x=3x-9
Answer:
0
Step-by-step explanation:
Use the values of a , b , and c to find the discriminant.
Janice works at the We Are Cells. She earns $650 per week plus a 15% commission on all new cell phone contracts that she sells each week. Write a linear function that represents the weekly salary.
Answer:
y=650+15x
Step-by-step explanation:
y=mx+b, b is starting amount, m is the multiplier for the x
uwu
please help!! i’ll give you brainliest
Answer:
Step-by-step explanation:
The common ratio is 3, so multiply the numbers of the pattern by 3. So 1x3 is 3, 3x3 is 9, 9x3 is 27, 27x3 is 81, 81x3 is 243, and just continue until you're on the 7th number; 1 was the first, 3 was the second and 9 was the third.
examine the diagram.
what is the m
m
Answer:
78
Step-by-step explanation:
Answer: 76
Step-by-step explanation:
48 + 56 = 104
180 - 104 = 76
do please help (THESE ARE EXTRA WORDS BECAUSE BRAINLY WANTS SOME)
Answer:
2 units to the right
1 units up
Step-by-step explanation:
Find the value of x:
Geometry 6th Grade
Answer:
120°
Step-by-step explanation:
construct a line parallel to the two parallel lines through x
x = 70 + 50 = 120
There are two right angled triangles
given that Tan A = Tan B
Find the value of X
Answer:
[tex]x = \frac{2}{3}[/tex]
Step-by-step explanation:
Given
See attachment for triangles
Required
Find x
First, calculate tan A
From the first triangle:
[tex]tan\ A= \frac{x + 2}{x}[/tex]
Next, calculate tan B
From the second triangle:
[tex]tan\ B= \frac{4}{3x-1}[/tex]
[tex]tan\ A = tan\ B[/tex]
So, we have:
[tex]\frac{x + 2}{x}= \frac{4}{3x-1}[/tex]
Cross Multiply
[tex](x + 2)(3x - 1) = 4 * x[/tex]
Open brackets
[tex]3x^2 + 6x - x - 2 = 4x[/tex]
[tex]3x^2 + 5x - 2 = 4x[/tex]
Collect Like Terms
[tex]3x^2 + 5x - 4x- 2 =0[/tex]
[tex]3x^2 + x- 2 =0[/tex]
Expand
[tex]3x^2 + 3x - 2x- 2 =0[/tex]
Factorize:
[tex]3x(x + 1) - 2(x+ 1) =0[/tex]
Factor out x + 1
[tex](3x - 2)(x +1) = 0[/tex]
Split:
[tex]3x - 2 = 0\ or\ x + 1 = 0[/tex]
[tex]x = \frac{2}{3}\ or\ x = -1[/tex]
x can not be negative, so:
[tex]x = \frac{2}{3}[/tex]