By substituting
[tex]a = {2}^{x} [/tex]
solve the equation
[tex] {4}^{x} + 3 = {2}^{x + 2} [/tex]
can someone help me solve this question please
What are the possible numbers of positive, negative, and complex zeros of f(x) = −x6 − x5 − x4 − 4x3 − 12x2 + 12
Answer:
Positive roots = 1 or 0
Negative roots = 0, 2, or 4
Complex roots = 0, 2, 4, or 6
Step-by-step explanation:
We are given the polynomial:
f(x) = -x⁶ - x⁵ - x⁴ - 4x³ − 12x² + 12
Now, by inspection, the highest degree is 6 and as such the polynomial is therefore a polynomial with more than 2 as a degree.
Applying Descartes Rule of Signs to the polynomial :
f(x) = -x⁶ - x⁵ - x⁴ - 4x³ − 12x² + 12
Signs are: - - - - - +
There is only 1 sign change and thus, it means there is 1 or 0 positive roots
To find number of negative roots, we will use f(-x);
f(−x) = -(−x)⁶ - (−x)⁵ - (−x)⁴ - 4(−x)³ − 12(−x)² + 12(−x)
f(-x) = -x⁶ + x⁵ - x⁴ + 4x³ − 12x² - 12
Signs are: - + - + - -
There are 4 sign changes and thus, it means there are 4, 2 or 0 negative roots
Thus; Complex roots = 0, 2, 4, or 6
What is 7 x 7 x 7 written using an exponent?
Answer:
7x7x7=7^3
Step-by-step explanation:
Parents are having twin babies and have put 7 unique name cards in a bowl.
* When the first baby is born, a parent draws a card and gives the baby that name.
* When the second baby is born, the parent draws a card from the remaining names.
How many combinations of names were possible for those two babies?
Answer: 42 Hope this helps!
Step-by-step explanation:
Okay so if there are 7 names lets just say the names are
1
2
3
4
5
6
7
The combos on names can be
1,2
1,3
1,4
1,5
1,6
1,7
2,1
2,3
2,4
2,5
2,6
2,7
3,1
3,2
3,4
3,5
3,6
3,7
4,1
4,2
4,3
4,5
4,6
4,7
5,1
5,2
5,3
5,4
5,6
5,7
6,1
6,2
6,3
6,4
6,5
6,7
7,1
7,2
7,3
7,4
7,5
7,6
There are 42 combos that can happen!
Cane buys candy in bulk and sells it at a 25% markup. If c represents the original cost of the candy, which expression represents the markup price?
Answer:
D
Step-by-step explanation:
which of the following sets of numbers could represent the three sides of a triangle?\
{10,21,32}
{13,17,32}
{14,24,40}
{13,16,27}
Answer:
14,24,40
Step-by-step explanation:
u cute
Answer:25 = 25 Right Triangle. 3, 7 and 9 Squaring each side = 9, 49 and 81. sum of the squares of the short sides = 9 + 49 = 58. 58 < 81 Obtuse Triangle. For determining if the 3 sides can even form a triangle, the triangle inequality theorem states that the longest side must be shorter than the sum of the other 2 sides.
Step-by-step explanation:
00:00
Select all the expressions that are equivalent to 312.79.
A. 33. 34.49
B. (33) • (736
C. 73. (3-4)-3.76
D. (33 + 39) • (76 + 73)
E. 320. (73)3 • (34)-2
Answer:
i think D
Step-by-step explanation:
WILL GIVE BRAINLEST PLZZZ HELPP MEEEE
Answer: its C
Step-by-step explanation:
A gym membership costs $50 to join a club and then $15 per month. Which equation below represents the equation for the total cost of the gym membership and the number of months ?
Answer:
d. y = 15x + 50
Step-by-step explanation:
Look for the keywords here :
A gym membership costs $50 to join a club and then $15 per month. Which equation below represents the equation for the total cost of the gym membership and the number of months?
Start with $50, this is the entry free, along with the question being the "total cost of the gym membership." Therefore any equation that puts a negative in front of 50 is incorrect.
a) y = 15x - 50 is crossed out
Now look at $15 per month, this is the amount that is paid per time and can be increased through a variable. Therefore any equation that does not put 15x is incorrect.
c) y = 50x + 15 and b) y = 65mx is crossed out
Leaving us with d) y = 15x + 50
Mr Baffoe's farm is 20 km from his house . He uses his car to travel y km of the distance from his and walks (3÷2) hours at the rate of 3km per hour to get to his farm. Find the value of y
Help help help help
Answer: The solution to this is y=10x-4
Step-by-step explanation:
Also please check out our yoo toobe channel that we have been working hard on, it is called Evimero Academy
thank you
I need help figuring out how to make a notation out of this equation: x>-2 or x>3
I’m trying to figure out if I can even put them in a notation together since it’s or.
Its an or because one is negative and the other is positive so they will go opposite directions
please help me please
Answer:
y coordinate is (0,-3) slope is 2
Step-by-step explanation:
it is bro
Answer:
y-int = -3
slope = 2x
Step-by-step explanation:
What is the circumstance of the circle
Answer:
c=pie r squared is the equations and the answer is 50.27
Step-by-step explanation:
I need help on this question plis
Answer:
the answer is D because all of the other ones are completely different expressions. but D is the expression that's in the problem, except they combine 6x and 7x because they're like terms
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The answer is D because you want to add the same variables together (6x+7x) to simplify. and you would leave the 5 alone because it does not have the same variable.
Answer:
D 13x+5
9/16 as a decimal rounded to the nearest hundredth.
Answer:
0.56
Step-by-step explanation:
(x+8)(x+2) = 10x+x^2
Answer:
.
Step-by-step explanation:
x^2 + 2x + 8x + 16 = 10x + x^2 (FOIL)
x^2 + 10x + 16 = 10x + x^2 (add like terms)
16 = 0 (10x and x^2 cancel out on both sides)
(x+8)(x+2) is NOT equal to 10x+x^2
A Six packs of undershirt cost $13.98. This is $3.96 less the cost of buying six individual shirts if each undershirt cost the same amount how much does each undershirt cost when purchased individually?
Jada raised 60% of $20 goal. How much did she raise?
Answer:
$12
Step-by-step explanation:
setting up a proportion and putting 20 of 100 and 60 over x, we multiply 60 and 20 then divide one hundred from both sides leabing. We should have 100/x = 1200/100. Doing this gives us x = 12.
Answer:
Jada raised $8
Step-by-step explanation:
$20 with 60% discount, you will pay 20 - 12 = 8 dollars.
For the function f(x)=-3(x-1) find f(0)
What is the measure of DA? 15 90 105 165
Answer:
D. 165
Step-by-step explanation:
if A+n=180
75+90+n=180
165+n=180
n=180-165
n=15
A+n=180
A+15=180
A=180-15
A=165 (D)
Which of the following does not state a principle related to why ground wires are an effective safety device? O A. Electronic devices are protected from power surges by having insulated wires. B. Electricity will travel more easily through metal than through insulators. C. When enough electricity builds up, it could pass through highly resistant materials to get to the Earth. D. Electricity always wants to travel "downhill" toward the Earth.
A; electronic devices are protected from power surges by having insulated wires.
The option that does not state a principle related to why ground wires are an effective safety device is:
A. Electronic devices are protected from power surges by having insulated wires.
Insulated wires protect electronic equipment against power surges, however, this has nothing to do with the usefulness of ground wires as a safety precaution.
The idea of earth wires is to provide a safe conduit for electrical currents to go into the Earth, avoiding harmful electrical potential from building up.
Thus, options B, C, and D all state principles that are directly related to the effectveness of ground wires as a safety device.
Hence, the correct answer is A.
Learn more about the insulated wires here:
https://brainly.com/question/3264493
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whats 0.22 as a percentage
Answer:
22%
Step-by-step explanation:
convert the decimal to a percentage
Answer: 22%
Step-by-step explanation: Ok so we know there are 100 1s in the number 100. So if the decimal is .22 all you have to do is multiply that number times 100 using a calculator, or just by moving the decimal over two spaces to the right. This would give you the answer of 22% in this problem. Also, this trick works for all decimals when turning them into percents. Merry Christmas
Which inequality is graphed on the coordinate plane?
A. y ≥ -3x + 2
B. y ≤ -3x + 2
C. y > -3x + 2
D. y < -3x + 2
Answer:
The answer is (B)y ≤ -3x+2
The inequality is graphed on the coordinate plane is option B. y ≤ -3x + 2
What is inequality?Inequality is defined as the relation which makes a non-equal comparison between two given functions.
If the equation or inequality contains variable terms, then there might be some values of those variables for which that equation or inequality might be true.
Such values are called solutions to that equation or inequality.
A set of such values is called a solution set to the considered equation or inequality.
From the given figure of graphed function;
The inequality is graphed on the coordinate plane is
B. y ≤ -3x + 2
Learn more about inequalities here:
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If the empire state building stands at around 1,454 feet and something is born every 0.00000000000000000000005 second how long is the average toenail length for a standard bridge troll? (I'm asking for a friend of mine..)
Answer:
Length = 0
Step-by-step explanation:
The bridge troll is tearing his toe nails up climbing the Empire State Building.
Use the diagram to solve. What is 135% of 280? Percent Total 100% 5% 5% 5% 5% 5% 5% 596 13596 245
Answer:
B. 378
Step-by-step explanation:
hope this helps
What is the y-intercept of the graph of
y = 5x – 2?
What is the solution to 18 = 2(2x + 7)?
Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?
Answer:
0.00005
Step-by-step explanation:
We have the average fraction defective as p = 1%
= 0.01
N = 100
Then 95.5% deviation = 2σ
From there we have,
σ = √p*(1-p)/n
When we input these values, into the formula, we will have
σ = √0.01(1-0.01)/100
= √0.01(0.99)/100
= √0.000099
= 0.00995
The LCL = p - 2σ
= 0.01 - 0.00995
= 0.00005
lower control chart limit be is 0.00005
The 95.5% lower control chart limit be is 0.0005.
Given,
The average fraction percent in the past defective as p = 1% = 0.01
Sample size N = 400
Then ,
According to the question ,
95.5% deviation = 2x
We have,
x = [tex]\frac{\sqrt{p (1-p)} }{n}[/tex]
We put these values, into the formula,
x = [tex]\frac{\sqrt{0.01 ( 1 - 0.01) } }{400}[/tex]
= [tex]= \frac{\sqrt{(0.01) (0.99)} }{400}[/tex]
= [tex]\frac{0.99}{400}[/tex]
= 0.0000245
The LCL = p - 2x
= 0.01 - 0.0000245
= 0.00005
The Lower control chart limit be is 0.00005
For the more information about Standard deviation click the link given below.
https://brainly.com/question/23907081
A runner runs 15 miles in 3 hours. Find the constant of proportionality (k), that relates the miles, y, to the time, x. Also, write the equation (y = kx) for this relationship.
Answer:
y=10x; y is the miles driven, x is the hours driven
Step-by-step explanation:
The independent variable is x, and the dependent variable is y.
