How many complex roots does the polynomial equation have?
-3x4 – 7x + 17 = 0
2
3
4
5
Answers
Answer:
4
Step-by-step explanation:
Related Questions
Someone help me with 12 pls plsssss plsssss
Answers
Answer:
Equation is 7n-9, a10=61
Step-by-step explanation:
nth term of an arithmetic sequence with first term a and common difference d is a+(n-1)d
Here, a=-2 , d=7
nth term is -2+(n-1)7=7n-9
a10=7*10-9=70-9=61
A particular computer takes 13-minutes to download a 52-minute TV show. How long will it take the computer to download a 2.5-hour movie?
Answers
Answer: 37.5 minutes
Step-by-step explanation:
1. divide 52 by 13
52/13 = 4
2. take divide 150 (minutes in 2.5 hours) by 4
150/4 = 37.5
your answer is 37.5 minutes
f(t)=2t-3
f(7)=
(khan academy evaluate functions)
Answers
Answer:
11
Step-by-step explanation:
f(t) = 2t - 3
substitute t for 7
f(7) = 2*7 - 3
f(7) = 14 - 3
f(7) = 11
Brendan is going to paint a wall that measures 10 feet tall by 13 feet wide. The wall has two windows that are 2.5 feet wide by 4 feet tall. What is the area of the wall that he is going to pain
Answers
Answer:
Total area of paint = 110 ft²
Step-by-step explanation:
Given:
Measurement of wall = 10 feet tall by 13 feet wide
Measurement window = 2.5 feet wide by 4 feet tall each
Find:
Total area of paint
Computation:
Total area of paint = Area of wall - 2[Area of window]
Total area of paint = [10 x 13] - 2[2.5 x 4]
Total area of paint = [130] - [20]
Total area of paint = 110 ft²
The area of the wall Brenda is going to paint = 110 sq. ft.
Recall:
Area of rectangle = Length × widthGiven:
Measurement of the wall = 10 feet tall by 13 feet wide
Area of the wall = 10 × 13 = 130 sq. ft
Measurement of a window = 2.5 feet wide by 4 feet tall
Area of a window = 2.5 × 4 = 10 sq. ft
The windows won't be painted, therefore, the area of the wall that Brenda is going to paint = Total area of the wall - 2(Area of a window)
Area of the wall to be painted = 130 - 2(10)
Area of the wall to be painted = 110 sq. ftLearn more about area of rectangle on:
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Mirna earned $145 baby-sitting during the spring break. She needs to save $105 for the German Club trip. She wants to spend the remainder of the money shopping. Use s for the amount of money Mirna can spend. Enter your inequality in the most simplified form.
Answers
Answer:
$145 - $105 ≤ $40
Step-by-step explanation:
Amount earned = $145
Amount to save = $105
Amount to spend, s = $145 - $105
= $40
The inequality is
Amount earned - Amount to save ≤ Amount to spend
$145 - $105 ≤ s
$145 - $105 ≤ $40
Claire earns $50 per week. How long would she need to wor
earned $1757
Answers
Answer:36 weeks
Step-by-step explanation:
1757/50=35.1
Kennith and three of his friends shared a basket of apples. The basket weighed 14.75 pounds. What is the weight of the apples that each of them recieved
Answers
Answer:
3.6875 lbs per person
Step-by-step explanation:
Calculation for the weight of the apples that each of them recieved
Based on the information given we were told that Kenneth shared the basket of apples with 3 of his friends which means that they are 4 in total which is Kenneth + 3 of his friends.
Hence,
Weight of apples=14.75 pound/4
Weight of apples=3.6875 lbs per person
Therefore the weight of the apples that each of them received will be 3.6875 lbs per person
Sara kicked a football. The height of the ball (in meters above the ground) ttt seconds after Sara kicked it is modeled by h(t)=-5t^2+20th(t)=−5t 2 +20th, left parenthesis, t, right parenthesis, equals, minus, 5, t, squared, plus, 20, t Sara wants to know the height of the ball above the ground at its highest point. 1) Rewrite the function in a different form (factored or vertex) where the answer appears as a number in the equation. h(t)=h(t)=h, left parenthesis, t, right parenthesis, equals 2) At its highest point, how far above the ground was the ball? meters
Answers
Answer:
[tex]h(t) = -5(t-2)^2+20[/tex]
20 meters
Step-by-step explanation:
The vertex form of the equation is h(t) = -5(t-2)^2 - 4 and the ball was 20 meters above the ground
Vertex form of an expressionThe standard vertex form of a quadratic equation is expressed as (a-h)^2 + k
Given the height of the ball (in meters above the ground) t seconds after Sara kicked it is modelled by h(t)=-5t^2+20t
Write in vertex form
h(t)=-5t^2+20t
h(t) = -5(t^2 - 4t)
h(t) = -5(t^2 - 4t + 2^2) - 2^2
h(t) = -5(t-2)^2 - 4
Hence the vertex form of the equation is h(t) = -5(t-2)^2 - 4
At the highest point t = -b/2a
t = -20/2(-5)
t = -20/-10
t = 2ssecs
Substitute t = 2 into the function
h(2) = -5(2)^2 + 20(2)
h(2) = -20 + 40
h(2) = 20 meters
Hence the ball was 20 meters above the ground
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what is the independent variable in this example HURRY PLEASE
Answers
Answer:
Volume
Step-by-step explanation:
x axis is always independant y axis is always dependant
Whats the midpoint between 1 and 2
Answers
Answer:
1.5
Step-by-step explanation:
Think of a number line, on the number line are the points 1 and 2, the number between those points is the midpoint.
You can also average 1 and 2 to get the midpoint. To average any number sequence, simply add all of the numbers and then divide the sum of those numbers by the amount of numbers there are.
In this case add 1 and 2 to get 3 then divide 3 by 2 (because there are two numbers) to get 1.5
The midpoint between 1 and 2 is 1.5.
What is the midpoint?A location that is halfway between two other points is considered to be a line segment's midway. The distance between the midway and each endpoint is the same.
Given points are 1 and 2. The midpoint is calculated by using the formula as ( x₁ + x₂ ) / 2.
Average 1 and 2 to get the midpoint. To average any number sequence, simply add all of the numbers and then divide the sum of those numbers by the number of numbers there are.
The midpoint will be calculated as:-
M = ( x₁ + x₂ ) / 2.
M = ( 1 + 2 ) / 2.
M = ( 3 ) / 2.
M = 1.5
Therefore, the midpoint between 1 and 2 is 1.5.
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Which term can be added to both sides of the equation
by completing the square?
+
a
a so that the equation can be solved
2
O
2a
O
ca.
Help please
Answers
Step-by-step explanation:
my instagram account bdq.frk follow please
Yasmin purchased 6 heads of cabbage that each weighed 2 and StartFraction 3 over 8 EndFraction pounds. How much did the cabbage weigh all together? 9 and three-fourths pounds
Answers
Answer:
Step-by-step explanation:
Amount of cabbage bought = 6 heads of cabbage
Weight of one cabbage = 2 3/8 pounds
6 cabbage will weight x pounds
Use the equality postulate to find x:
1 cabbage = 19/8 pounds
6 cabbages = x pounds
Cross multiply
1 * x = 6 * 19/8
x = 114/8
x = 14 2/8
x = 14 1/4
Hence the cabbage altogether will weight 14 1/4 pounds
Simplificar: 8x + 2x - y
Answers
Answer:
= 10x - y
Step-by-step explanation:
When a certain number is divided by 8, the quotient is 13. What is the number? Let m = the number.
Answers
Answer:
M=104
Step-by-step explanation:
8 times 13 equals 104. Therefore is you divide by 8, you get 13 and vice versa
Katherine opens an exercise studio, and after the first month, she has 100 members. The table shows the membership growth from
January-May. If the pattern continues, when will Katherine's gym have 375 members?
A)
December
B)
November
09
October
D)
September
Answers
Answer:
December (A)
Step-by-step explanation:
The growth per month on average is 25 people, if you continue that through June-December she will reach 375 at December.
A train travels 90 miles in 1.5 hours. How many miles will the train go in 6 hours if it continues to travel at the same rate of speed?
Answers
Answer:
360
Step-by-step explanation:
the train is going 60 mph. 60*6=360
A quantity of 22% acid solution is being diluted with some 8% acid solution. The final solution must be 12% acid and contain 101 mL. How much of each solution must be added to achieve the result? ROUND TO THE NEAREST mL.
Answers
Answer:
Amount of 22% acid solution needed = 29 ml
Amount of 8% acid solution needed = 72 ml
Step-by-step explanation:
Let x=amount of 22% solution needed
Then 101 - x= amount of 8% solution needed
The pure acid in the 22% solution (0.22x) plus the amount of pure acid in the 8% solution 0.08(101 - x) has to equal the amount of pure acid in the final mixture (0.12*101).
The equation to solve is:
0.22x + 0.08(101 - x) = (0.12*101)
0.22x + 8.08 - 0.08x = 12.12
0.14x = 12.12 - 8.08
0.14x = 4.04
x = 4.04 / 0.14
= 28.86
x = 29 ml to the nearest ml
Amount of 22% acid solution needed = 29 ml
Amount of 8% acid solution needed = 101 - x
= 101 - 29
= 72ml
Can someone help me with part b?
Answers
Answer: x^2+3x+5
Step-by-step explanation:
Substitute (x+4) in so that you get f(x)=(x+4)^2-5(x+4)+9. Then expand so you get x^2+8x+16-5x-20+9. Now simplify and you get x^2+3x+5. That is your final answer.
What is the domain of the relation below? A. {-1,0, 1, 3} B. {-2,0, 1, 3) C. -2,-1,0, 1, 2, 3} D. {0, 1, 2, 3)
Answers
Answer:
C
Step-by-step explanation:
[x = 6y +16
19x - 2y = -12
one solution
two solutions
O infinitely many solutions
O
no solution
Answers
114y + 304 -2y = -12
112y = -316
Y = 2.82
EMERGENCY! Please give me the correct answer!
Answers
Answer:
Its the one all the way to the right.
Step-by-step explanation:
PLEASE HELP ME ASAP
I will mark brainliest
Answers
Answer:
1846 - 21.37% increase
1847 - 7.75% decrease
1848 - 9.92% increase
Hope this helps!
Me ayudan con esto porfavor es para hoy
Answers
Answer:
Lo siento, no puedo ayudarte, ya es debido
How do I find the missing sides for this special triangle?
Answers
Answer:
I assume you can do the simple calculations to get the full answer
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below :)
What is the lowest value of the range of the function shown on the graph
Answers
But check it and see cuz that’s the lowest but -3 is also low
What is the solution to this equation?
-6x + 3 = 21
Answers
Answer:
x=(-3)
Step-by-step explanation:
-6x(-3) is 18
18+3=21
Answer: -3
Step-by-step explanation:
Move all terms that don't contain
x to the right side and solve.
x = −3
PLS GIVE ME BRAINLIEST, IT WILL MEAN A LOT TO ME
Will give brainliest
Answers
Answer:
2√10
Step-by-step explanation:
√5*√8
=√40
simplify:
2√10
Apple announced that the new iphone 12 is coming out soon. Best Buy has reduced the price of a iphone 11 from $500 to $300. By what percent was the price of the iphone 11 reduced
Answers
Answer:
40%
Step-by-step explanation:
Answer:
40%
Step-by-step explanation:
HOW DO YOU DO THIS PROBLEM?
Answers
Answer:
You multiply the 15 and 140 by four. Then you will have your 60 minutes which equals an hour and your 560 calories per hour.
Step-by-step explanation:
Answer:
I answered in the picture
target sells 24 bottles of water for $3, and 36 of water for $4 witch is the better buy and by how much
Answers
Answer:
36 bottles for $4
Step-by-step explanation:
First you need to calculate the price for one bottle, the lower the cost, the better buy. Do this by dividing the price by the amount of bottles:
= $3 ÷ 24
= 0.125 cents
= $4 ÷ 36
= 0.111 cents
The cheaper option and the better buy is the 36 bottles for $4.