Answer:C
Step-by-step explanation:
The height of a boulder falling off a 500 meter cliff can be modeled using a quadratic equation.
Part A: Write the quadratic equation to represent this situation.
Part B: Determine the time it will take the boulder to reach the ground.
Part C: In one paragraph, using your own words, explain your work in Steps A and B.
Answer:
The answer is t=4 s
Step-by-step explanation:
Answer: T=4s
Step-by-step explanation: it is option 2
The diameter of the circles is 2
Cm what is the area of the shaded section
Who can help with this question please?
Answer:
Let the sum be x.
Using formula,
I=
100
PRT
=
100
x×
12
15
×
2
15
−
100
x×
12
8
×
2
25
=32.50
⇒
2400
25x
=32.50
⇒x=
25
32.50×2400
=3120
∴ Required sum =Rs.3120
Step-by-step explanation:
Which of the following is equivalent to x4 - y4? Select all that apply.
(-y)(x + y)3
(x2 - y2)2
(x - y)2(x + y)2
O 62 - y2)(x2 + y2)
o 6-y)6+y)(x2+x2)
Answer: (x^2-y^2) (x^2+y^2) and (x-y)(x+y)(x^2+y^2)
Step-by-step explanation:
(x2 − y2) (x2 + y2)Expand (x2 − y2) (x2 + y2) using the FOIL Method.
Apply the distributive property.
x^2 (x^2 + y^2 ) − y^2 (x^2 + y )
Apply the distributive property.
x^2 x^2 +x^2 y^2 - y^2 (x^2 y^2 )
Apply the distributive property.
x^2 x^2 + x^2 y^2 - y^2 x^2- y^2 y^2
Combine the opposite terms in x^2 x^2 + x^2 y^2 - y^2 x^2 - y^2 y^2.
Reorder the factors in the terms x^2 y^2 and − x^2 y^2.
x^2 x^2+ x^2 y^2 - x^2 y^2 - y^2 y^2
Subtract 2 2 from 2 2.
x^2 x^2+ 0 - y^2 y^2
Add 2 2 and 0.
x2 x2- y2 y2
Simplify each term.
Multiply x2 by x2 by adding the exponents.
x^4 − y^2y^2
x^4 − y^4
(x-y)(x+y)(x^2+y^2)(x − y) (x + y) (x^2 + y^2)
Expand (x − y) (x + y) using the FOIL Method.
(x ⋅ x + xy − yx − y ⋅ y) (x^2 + y^2)
Combine the opposite terms in x ⋅ x + xy − yx − y ⋅ y.
(x ⋅ x − y ⋅ y) (x^2 + y^2)
(x^2 − y^2) (x^2 + y^2)
Expand (x^2 − y^2) (x^2 + y^2) using the FOIL Method.
Apply the distributive property.
x^2 (x^2 + y^2) − y^2 (x^2 + y^2)
Apply the distributive property.
x^2 x^2 + x^2y^2 - y^2 (x^2 + y^2)
Apply the distributive property.
x^2 x^2 + x^2 y^2 - y^2 x^2 - y^2 y ^2
Combine the opposite terms in x^2x^2 + x^2y^2 − y^2x^2 − y^2y^2.
x^2x^2 − y^2y^2
x^4 − y^4
please give me brainliest :)
Mary rounds these numbers to the nearest hundred. Which number does she round to 400? Choose all that apply. A) 351. B) 369 C). 401. D) 413. E) 448
Answer:
401
Step-by-step explanation:
simplify. Rewrite the expression in the form 9^n. 9^7/9^5
Answer:
9²
Step-by-step explanation:
9⁷ / 9⁵
9⁽⁷⁻⁵⁾
9²
Helpp!!!!!!!Plz.....
Answer:
MJK=90
MJL=63
JLK=63
KML=27
MNL=126
Step-by-step explanation:
If this is a perfect rectangle, then I should be correct:
Each angle of a rectangle is 90 degrees, so MJK is 90
Since we know angle KJL is 27, and MJK is 90, just subtract them to get 63.
Angle JLK should be equal to angle MJL so it is also 63
Angle KML should be equal to angle KJL so it would also be 27
And finally, angle JKN should be 27 so 27+27=54. And since all angles of a triangle add up to 180, you can get angle MNL by subtracting 180-54 to get 126 because angle MNL and JNK/KNJ are equal to each other
Can some oen help me?
Answer: 12 + 21y
Step-by-step explanation:
Answer:
12 + 21y
Step-by-step explanation:
A 35 ounce bag of chips costs $4.99.
What is the price per ounce?
Answer:
The answer to the question provided is $7.01
5x+2y=13
2x+6y+26
what is the answer to the question
Step-by-step explanation:
5x+2y=13
2x+6y=26
[tex]5x = 13 - 2y \\ x = \frac{13 - 2y}{5} [/tex]
[tex]2( \frac{13 - 2y}{5} ) + 6y = 26[/tex]
[tex] \frac{26}{5} - \frac{4y}{5} + 6y = 26[/tex]
[tex]6y - \frac{4y}{5} = 26 - \frac{26}{5} \\ [/tex]
[tex]5.2y = 20.8 \\ y = 4 \\ x = \frac{13 - 2 \times 4}{5} = \frac{13 - 8}{5} \\ x = 1[/tex]
The edges of a cube are 5 centimeters each and the diagonal of a face is approximately 7 centimeters. What is the approximate area of the cross section passing through the diagonals of opposite faces of this cube? A. 12 square centimeters B. 25 square centimeters C. 35 square centimeters D. 49 square centimeters
Answer:
C. 35 square centimeters
Step-by-step explanation:
What we need for this question:
The edges of a cube are 5 centimeters each.
The face diagonal is about 7 centimeters. (actually 7.0710678118655 cm)
To find the cross sectional area here, multiply 5 cm by 7 cm.
5 cm * 7 cm
35 cm² is your final answer, so C is the answer.
Answer:
It is C. 35 square centimeters
Step-by-step explanation:
Can someone tell me the answers? Like for example point A is 5,3) please help
Sure! Please give brainly if I'm correct, and thank you!
A= 5,3
B= 0,0
C= -9,-4
D= -10,4
E= 4,-8
F= 10,10
G= -4,0
H= 0,7
I= -6,-8
J= 9,-2
PLEASE HELP ME NOT TOO HARD
Mary has to spend $12000 on expenses each year. If that amount of money is 20% of her salary, then how much money does Mary make working as an engineer per year?
ALSO PLEASE LEAVE A STEP BY STEP EXPLINATION TY
Answer:
Total salary = $60,000
Step-by-step explanation:
Well I'm just going to make this short and easy... ok?
12,000=20%
20%x5 = 100%
hmmmm....
12,000 x 5 = ???
Answer = $60,000
11. The poll wanted to announce a separate conclusion about the percent
who favor school prayer among those who identify themselves as
evangelical Christians. This group was a portion of the original group.
What can you say about the margin of error for this conclusion? Explain
your answer.
Answer:
The ratio of 6th grade students who play soccer to students who play basketball is 4:3. If there are 56 6th graders, how many play basketball?
Step-by-step explanation:
can you please help me
Which equation can be used to represent "three minus the difference of a number and one equals one-half of the difference of three times the same number and four”?
(1 – n) – 3 = 6 plus 2 left-parenthesis x plus 4 right parenthesis equals StartFraction one-half EndFraction left-parenthesis 3 minus x right-parenthesis.(4 – 3n)
3 – (1 – n) = 6 plus 2 left-parenthesis x plus 4 right parenthesis equals StartFraction one-half EndFraction left-parenthesis x minus 3 right-parenthesis.(4 – 3n)
(n
PleSe please help powaseee
Please hurry!
What is the rate of change of the function shown on the graph? Round to the nearest tenth.
A.) 2.00
B.) 2.50
C.) 5.25
D.) 10.50
Answer:
B
Step-by-step explanation:
which postulate proves the two angles are congruent?
Answer:
HL (hypotenuse leg)
Step-by-step explanation:
They share a leg, meaning they must be an equal length, and the hypotenuse is congruent, so the hypotenuse leg theorem says they are congruent.
– 2y – 10 = x
- 10x - y = -14
Answer:
hey there guys ^^
Step-by-step explanation:
Carmen is buying a fitness tracker that costs $129.95. She has a coupon for 20%. After the coupon is used, 7% tax will be charged. What is the final cost of the fitness tracker with tax?
9514 1404 393
Answer:
$111.24
Step-by-step explanation:
The use of a 20% off coupon causes the price to be multiplied by (1 -20%) = 0.80. The addition of 7% tax causes the discounted price to be multiplied by (1 +7%) = 1.07. Multiplying the price by these two factors gives ...
$129.95 × 0.80 × 1.07 = $111.24
The final cost with tax is $111.24.
please help me show my work!!! i got the answer but i need to show my work!
I WILL GIVE BRAINLIEST TO RIGHT ANSWER
write an equation of the line in a slope intercept form of a line that passes through (5,7) and (4,4)
Answer:
y = 3x - 8
Step-by-step explanation:
passes through (5, 7) and (4, 4)
Find slope:
(7 - 4) / (5 - 4)
= 3/1
= 3
This is your slope.
Now plug in a set of coordinates.
y = 3x + b
7 = 3(5) + b
7 = 15 + b
b = -8
Your equation is: y = 3x - 8
Check your work by plugging in the second coordinate pair.
y = 3x - 8
4 = 3(4) - 8
4 = 12 - 8
4 = 4
Your solution is correct.
What is solution of 5(x - 3)=4(x + 2)
Answer:
x=23
Step-by-step explanation:
You simplify both sides of the equation, then isolate the variable.
Answer:
x=23
Step-by-step explanation:
please please please help quick
Answer:
[tex]3\sqrt{5}[/tex]
Step-by-step explanation:
Since the triangle has a right angle, we are going to use pythaogoran theoem, which is [tex]a^{2} +b^{2} =c^{2}[/tex], where a and b are the legs and and c is the hypotunese/ slated side. Let set it up.
[tex]3^{2} +6^{2} =c^{2}[/tex]
9+36=c^2
45=c^2
[tex]\sqrt{45}[/tex]=
Then we are going to find a perfect squarre root(1,4,9,16,25....) to simplify the radical
The perfect square root is 9 because 9 goes into 45 5 times.
[tex]\sqrt{9x5}[/tex]
Then take the sqr root of 9 and we have [tex]3\sqrt{5}[/tex]
b)
Work out the size of one interior angle.
NEED HELP WITH B
thanks everyone
Terri wrote the system of linear inequalities.
-3x - 3y > -18
-X<-y
Select all of the ordered pairs that are part of the solution set for this system of linear inequalities.
(-1,5)
(2, 4)
(3, 3)
(4.6)
(5,2)
Answer:
Step-by-step explanation:
A,b,d
None of the ordered pairs is a solution to the system of linear inequalities.
The given system of inequalities is:
-3x - 3y > -18
-x<-y
From the inequality -3x - 3y > -18
-3(x + y) > -18
Multiply both sides by -1
3(x + y) < 18
Divide both sides by 3
x + y < 18/3
x + y < 6.......(*)
Also from the inequality -x < -y
Multiply both sides by -1
-1(-x) > -1(-y)
x > y...............(**)
Any ordered pair that is a solution to the system of linear inequalities must fulfil the inequalities in (*) and (**)
Since none of the ordered pairs given fulfill the conditions in (*) and (**), none of the given options is correct
Learn more on inequalities here: https://brainly.com/question/24372553
i
Identify the percent of change as an increase or a decrease.
15 ounces to 5 ounces
increase
decrease
Find the percent of change. Round to the nearest tenth of a percent if necessary.
The percent of change is
%.
Answer:
It is a 67% decrease
Step-by-step explanation:
First subtract the new amount from the old one
[tex]15-5=10[/tex]
Then divide the difference by the original amount.
[tex]10/15-0.67[/tex]
Move the decimal point over two spots (multiply by 100) to get your percentage.
0.67=67%
Solve the problem
-10n + 6 -4n
[tex]\bold{Hey\ there!}[/tex]
[tex]\bold{-10n+6-4n}[/tex]
[tex]\bold{COMBINE\ in\ YOUR\ LIKE\ TERMS}[/tex]
[tex]\bold{(-10n - 4n) = -14}[/tex]
[tex]\bold{6=6}[/tex]
[tex]\boxed{\boxed{\bold{Answer: -14n+6}}}\checkmark[/tex]
[tex]\text{\bold{Good luck on your assignment and enjoy your day!}}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
Please Help! Freshman in high-school Algerbra 1
Answer:
yes
Step-by-step explanation:
0-10 is obvious because when you look at the chart you can clearly see that theres alot kidsof
Pls help me I really need it
9514 1404 393
Answer:
y = 5
Step-by-step explanation:
Side lengths in an isosceles right triangle are the same length.
y = 5