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xenn [34]
3 years ago
7

The sum of two numbers is 21 and their difference is 7 what are those two numbers

Mathematics
2 answers:
True [87]3 years ago
6 0
If you need the sum than here is an equation for it 7x3= 21
Arturiano [62]3 years ago
5 0
Sum means the total from adding.
14+7=21
The difference of the two numbers
14-7=7
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Henry has $ 21.50 to ride the trolley around San Francisco this week. It will cost him $ 0.50 every time he rides. Identify the
dusya [7]

Answer:

The Independent Value is the Amount of Money he has

The Dependent Value is the amount of Times he can Ride the Trolley

Step-by-step explanation:

This is because the cost is taken into account for the amount of times he can ride the trolley but the amount of money he has is not reliant or controlled by another piece of information.

4 0
4 years ago
Determine and state the vertex of f(x) = x2 - 2x - 8 using the method of completing the square
Elza [17]

Answer:

vertex = (1, - 9 )

Step-by-step explanation:

The equation of a parabola in vertex form is

f(x) = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Given

f(x) = x² - 2x - 8

To complete the square

add/ subtract ( half the coefficient of the x- term )² to x² - 2x

f(x) = x² + 2(- 1)x + 1 - 1 - 8

     = (x - 1)² - 9 ← in vertex form

with vertex = (1, - 9 )

3 0
3 years ago
What is this answer helpppppppppo
slava [35]

Answer: the answer is 73.5 but it is not here so I think 89 is the

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do I do number 5?
rewona [7]
H(t)=-16t^2+15t+12
(e)
maximum height is reached when h'(t)=-32t+15=0, or tm=15/32 seconds.
maximum height reached = h(tm)=h(15/32)=-16(15/32)^2+15(15/32)+12
=993/64 ft
=15.516 ft.
(f) when Greg reaches water, h(t)=0=-16t^2+15t+12
Solve for t using quadratic formula,
t=[-15+/- sqrt(15^2+4*12*16)]/(2*-16)
=-0.516s or 1.4535s.
Reject negative root so
Greg reaches water at t=1.4535 seconds.
3 0
3 years ago
Kim plans to share her candy with 4 friends. If she has 9 chocolates and 6 lollipops, how many pieces of candy will they each ge
ira [324]

Answer:

3.75

Step-by-step explanation:

For Chocolates:

9 ÷ 4 = 2.25

For Lollipops:

6 ÷ 4 = 1.5

Now you add 2.25 and 1.5:

= 3.75

Hope I helped! If so, may I get Brianliest and a Thanks?

Thank you, have a good one! =)

5 0
3 years ago
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