Answer:
200 seconds
1:2 ratio for 2,000 meters and 1:3 ratio for 3,000 meters
Step-by-step explanation:
It takes the racer 100 seconds to run 1,000 meters and there is 3'000 meters so you multiply 100 times 3 to get 300.
Solve each system of equations algebraically
y=x+2
y=-3x
Answer:
Your answer is: (-1/2, 3/2)
Step-by-step explanation:
y = x + 2
y = -3x
Use substitution by plugging the second equation into the first.
-3x = x +2
Subtract x from both sides to combine the variables.
-4x = 2
Divide both sides by -4 to isolate the variable x.
x = 2/-4
Simplify.
x = -1/2
Plug x into one of the equations to find y.
y = (-1/2) + 2
y = 3/2
Plug x into the other equation to confirm your answer.
y = -3(-1/2)
y = 3/2
Your answer is: (-1/2, 3/2)
may someone help me ASAP? I am solving polynomial equations and I don't know how to do it, here is the equation... x^4+11x^2=3x^2+128
Answer:
[tex]x=2\sqrt{2}[/tex], [tex]x=-2\sqrt{2}[/tex], [tex]x=4i[/tex], [tex]x=-4i[/tex]
Step-by-step explanation:
[tex]x^4+11x^2=3x^2+128[/tex]
First, we subtract 128 from both sides:
[tex]x^4+11x^2-128=3x^2[/tex]
Then, we subtract [tex]3x^2[/tex] from both sides:
[tex]x^4+8x^2-128=0[/tex]
Rewrite the equation:
[tex]u^2+8u-128=0[/tex]
Insert and solve:
[tex]u^2+8u-128=0\\u=8,u=-16\\x^2=8:x=2\sqrt{2},x= -2\sqrt{2} \\x^2=-16:x=4i,x=-4i[/tex]
Please give Brainliest
Find the volume of this right rectangular prism. [type your answer as a number]
Answer:the answer is 70 u welcome text me if wrong armstrongtamarion
Step-by-step explanation:
Don deposited $3,500 for 5 years on 2.40 pa interest rate in his savings account how much simple interest will he earn
4. David makes $ 16,000 a year. He gets paid SEMIMONTHLY (24 times a year). What is the amount
per pay?*
Answer:
$384,000
Step-by-step explanation:
Answer: Well if we have to round up i would say he makes about 6660.60 dollars a day
If there are any answer choices maybe i could help a bit morec
Step-by-step explanation:
Joey has already taken 3 pictures at home, and he expects to take 1 picture during every
day of vacation. How many days will Joey have to spend on vacation before he will have
taken 13 pictures?
Help please!
The points (0,-14), (1,-3), (2,0), (3,5) are on a parabola. Write the function to represent this parabola.
Answer:
y= -4x^2 + 15x - 14
Step-by-step explanation:
A parabola is always in the form y = ax^2 + bx + c.
Substitute each point to produce different equations:
-14 = 0a + 0b + c = c
so c = -14
-3 = a1^2 + b1 + c = a + b - 14
so a + b = 11
0 = a2^2 + b2 + c = 4a + 2b -14 = 0
so 4a + 2b = 14
if we double a + b = 11 we get 2a + 2b = 22
Subtract this from 4a + 2b = 14 and we get 2a = -8 so a= -4 and b = 11 - a = 15
We don't need to use the (3,5) points as we have all the information we need.
Answer:
y= -4x^2 + 15x - 14
Step-by-step explanation:
Can someone please help I’ll mark you the brainiest
Answer:
try photo math it's meant for this kind of stuff
MONEY Claudio went for a walk. While he was walking, $1.35 fell out of his pocket. When he returned home, he counted his money and had $2.55 left. Write and solve an equation to find how much money was in Claudio’s pocket when he started his walk.
Answer:
3.9 that's how much he had
Answer:
He had $3.90 at the start of his walk.
Step-by-step explanation:
To find out how much money he had before his walk, you would take 2.55 + 1.35 and that you give you 3.9. But since we are dealing with money, you need to have the 0 at the end. So he started with $3.90 when he started his walk.
Simplify the following
16a^2b^3c^6/48ab^5c^6
Answer:
a/3b^2
Step-by-step explanation:
16a^2b^3c^6/48ab^5c^6
the c^6 cancel out, then simplify a^2 and a: 16a^2b^3/48ab^5 = 16ab^3/48b^5
Then divide 48 and 16 you get 3 16ab^3/48b^5 = ab^3/3b^5
And lastly, simplify b^3 and b^5 ab^3/3b^5 =
a/3b^2
If 15 is 25% of a value, what is that value? A. 40 B. 65 C. 75 D. 60
Answer:
d. 60
Step-by-step explanation:
x=15/0.25
15/0.25=60
please help and show work
Answer:
[tex]since \: the \: three \: sides \: are \: not\: equal : \\ its \: a \to \:\underline{\boxed{scalene}} \\ line \: \overline{AB} = 2 \\ line \: \overline{AC}= 6 \\ line \: \overline{BC} = 2 \sqrt{10} [/tex]
Step-by-step explanation:
[tex]to \: prove \: this \to \: we \: will \: need \: to \: find \\ \: the \: lenghts \: of \: the \: sides \: of \: \\ this \: triangle \to \\ using \: the \: shortest \: distance \: between \: \\ two \: points \to \: d \: = \sqrt{( {x_2 -x_1) }^{2} + (y_2 - y_1)^{2} } \\ \\ \underline{ \boxed{\overline{AB}}} \\ line \: \overline{AB} \: has \: points \to: ( - 3, - 3) \: and \:( 3, 5) \\ d \: = \sqrt{ (( - 3) - ( - 3))^{2} +( 5 - 3))^{2} } \\ d = \sqrt{(0) + (4)} \\ d = \sqrt{4} \\ \boxed{ d = 2 = AB} \\ \\ \underline{ \boxed{\overline{AC}}} \\ line \: \overline{AC} \: has \: points \to: ( - 3, - 3) \: and \:( 5, - 1) \\ d \: = \sqrt{ (( - 3) - ( - 3))^{2} +(( - 1) - 5)^{2} } \\ d = \sqrt{(0) + ( - 6) {}^{2} } \\ d = \sqrt{36} \\ \boxed{ d = 6 = AC} \\ \\ \underline{ \boxed{\overline{BC}}} \\ line \: \overline{BC} \: has \: points \to: ( 3, 5) \: and \:( 5, - 1) \\ d \: = \sqrt{ (5 - 3)^{2} +(( - 1) - 5)^{2} } \\ d = \sqrt{(2) {}^{2} + ( - 6) {}^{2} } \\ d = \sqrt{40} \\ \boxed{ d =2 \sqrt{10} = BC} \\ its \: a \: scalene : since \: the \: three \: sides \: are \: not\: equal[/tex]
Find the indicated term of each sequence by repeatedly multiplying the first term by the common ratio. Enter your answer to 7 decimal places if necessary. Use a calculator. 12, −2.4, 0.48, ...; 7th term The 7th term of the sequence is
Answer:
The 7th term of the sequence is 0.000768
Step-by-step explanation:
As given, the sequence is : 12, -2.4 , 0.48, ....
The first term = 12
Second term = -2.4
Third term = 0.48
Common ratio = [tex]\frac{-2.4}{12} = \frac{0.48}{-2.4} = -0.2[/tex]
Fourth term = 0.48(-0.2) = -0.096
Fifth term = -0.096(-0.2) = 0.0192
Sixth term = 0.0192(-0.2) = -0.00384
Seventh term = -0.00384(-0.2) = 0.000768
A factory can fill 225 bottles of orange juice each hour. Each bottle of orange juice contains 24 fluid ounces. Each bottle of juice sells for $5.50. How many fluid ounces of juice are filled in each 12-hour shift?
Answer:
27 i think
Step-by-step explanation:
I divided them to make sure its right im not 100 percent sure tho
2(x-5)=8x+14-2X
what is the first step
Answer:
Distribute the 2 through to the (x-5)
Step-by-step explanation:
After that you get x by itself and stuff like that, but first is distributing.
what is the solution to the equation -3a +5=a-3(2a+1)
Answer:
the answer is a = -4
Step-by-step explanation:
pls mark brainliest
Answer:
a = -4
Step-by-step explanation:
To find a, we need to get the variable on one side of the equation. So first we distribute.
-3a+5=a-6a-3 Now we subtract 5 from both sides and add the a to the -6a
-3a=-5a-8 Now we add 5a to both sides
2a=-8 And lastly divide both sides by 2
a= - 4
I hope this helps and please add me as brainliest! Thanks! <3
The legs of a right triangle measure 10 feet and 24 feet. What is the length of the hypotenuse, in
feet?
A. 27
B. 26
C. 34
D. 71,644
E. 48
Answer:26
Step-by-step explanation:
a squared+b squared= the hypotenuse squared
Input
10 squared+24 squared=the hypotenuse squared
100+576=676 squared
Now we need to find the square route of 676 because this is the hypotenuse squared, and we need to find the hypotenuse. And the square route of 676 is 26.
A class is made up of 12 boys and 13 girls. What percent of the class is boys?
Answer:
12/13 or 92.31%
Step-by-step explanation:
Answer:
48%
Step-by-step explanation:
So, we have to find what percentage is 12 out of the whole thing so:
We add the boys and the girls together to get the whole thing:
12 + 13 = 25
Then we turn it into a fraction:
12/25 = 48/100
So, 48% of the class is boys
Zainab has 25 beads.
She gives 6 of the beads to Lucy.
What fraction of the 25 beads does Zainab have now?
Give your answer in its simplest form.
Answer:
19/25 it cant simplified
Step-by-step explanation:
please help on this
Answer:
Try the first one but I think i that it
Step-by-step explanation:
Hope that helps
what percent is 28 out of 50
56%
thx r points
bye
I typing this because it said the answer was too
Help me please I need this grade!
Which expression is equivalent to 24x + 18y?
A) xy + 42
B) 6(4x + 3y)
C) 6xy(4 + 3)
D) 42xy
Step-by-step explanation:
The Answer is C I got it right on edge.
Answer:
B) 6(4x + 3y)
Step-by-step explanation:
I got that one wrong I got a 90 but B is it
D Question 1 10 pts Which digit is in the hundredths place of 107.263? 07 2 6 Question 2 10 pts
btw can u help me with that
Answer:
6
Step-by-step explanation:
We are given the number 107.263.
Using place value, locate the hundredths place.
107.263
The number 6 is in the hundredths place.
Hope this helps.
-3 -5 1 0 3
Three different numbers from the list are added together to give the smallest possible total.
Complete the sum below.
Fractions easy.
I just need answer for c and d
Answer:
i think C is 27 1/2 and D is 2 1/22 i dont know though let me know if its wrong
Step-by-step explanation:
i just turned them into mixed numbers
In this cube each small square has a side length 1 unit what is the surface area of this cube
==============================================================
Work Shown:
x = side length = 1 unit
SA = surface area of cube
SA = 6x^2
SA = 6*1^2
SA = 6*1
SA = 6
The surface area of the cube is 6 square units.
-------------------------
Side note:
In general, each face is x*x = x^2 units in area, and there are 6 of those faces. This is why the general surface area is 6x^2. In this case, each face is 1 square unit, so all 6 faces lead to a total of 6 square units.
The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23√h , where h is the height (in feet) above the transmitter.
Estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. Round your answer to the nearest tenth.
Answer:
182.4 nautical milesStep-by-step explanation:
Given
x = 1.23√hh = 22000 ftSubstitute h and find the value of x:
x = 1.23√22000 = 182.4 nautical miles (rounded)Dylan and Beatrice are working with the same function. Dylan input −8 into the function and got an output of 8.
Part A:
Based on this information, which statement is correct?
If Beatrice inputs −8 into the function, she must get an output of −8.
If Beatrice inputs −8 into the function, she must get an output of 8.
If Beatrice inputs 8 into the function, she must get an output of −8.
If Beatrice inputs 8 into the function, she must get an output of 8.
Part B
Which of the following points could the graph of the function possibly include? Select ALL that apply.
(−8,4)
(−4,8)
(4,−8)
(8,−4)
Answer:
Part A: If Beatrice inputs −8 into the function, she must get an output of 8.
Part B: (−4,8) , (4,−8) , (8,−4)
Step-by-step explanation:
Part A:
We know that a function is a relation that maps elements from one set (The domain, the set of the inputs) into elements from another set (the range, the set of the outputs)
Such that each input can be mapped into only one output.
Then if we know that our function maps the input -8 into the output 8.
Always that we use this function with the input -8. we will have the same output, 8.
Then we can conclude that the correct option to the first part is:
"If Beatrice inputs −8 into the function, she must get an output of 8. "
Part B:
Remember, -8 is mapped into 8, then the point (−8,4) (this says "-8 is mapped into 4) can never be on the graph of the function.
But the points:
(−4,8) , (4,−8) , (8,−4)
Could be on the graph of the function.
Answer:
correct A:-8,8
B: -4,8
Step-by-step explanation:
What is the value of x? Enter your answer in the box.
What is the distance from A(-3, 6) to B(4, -3)?
\/~~32
\/~~-32
\/~~10
\/~~130
Answer:
D) √130
The distance of the given points
AB = √130
Step-by-step explanation:
Explanation:-
Given points are A(-3,6) and B( 4,-3)
The distance formula
AB = [tex]\sqrt{x_{2}-x_{1})^{2} +(y_{2} -y_{1} )^{2} }[/tex]
AB = [tex]\sqrt{(4-(-3))^{2} +(-3-6)^{2}[/tex]
AB = [tex]\sqrt{(7)^{2} +(-9)^{2} }[/tex]
AB = [tex]\sqrt{49+81}[/tex]
AB = √130