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Alchen [17]
3 years ago
15

A train drove the distance of 440 feet in 20 seconds. Select ALL the unit rates that are equivalent to the speed of the model ai

rplane.
Mathematics
2 answers:
lys-0071 [83]3 years ago
8 0

Answer:

Step-by-step explanation:

The units of measurement listed below are suitable:

ft/sec

ft/min

miles/hr

Weren't there more choices?

ArbitrLikvidat [17]3 years ago
7 0

Answer:

22 feet/s

Step-by-step explanation:

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How do I work out A & B ?
Sonja [21]

Answer:

see explanation

Step-by-step explanation:

(a)

Given

x² + 5x + 6

Consider the factors of the constant term ( + 6) which sum to give the coefficient of the x- term ( + 5)

The factors are 3 and 2, since

3 × 2 = 6 and 3 + 2 = 5, hence

x² + 5x + 6 = (x + 3)(x + 2) ← in factored form

(b)

To solve

x² + 5x + 6 = 0 ← use the factored form, that is

(x + 3)(x + 2) = 0

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x + 2 = 0 ⇒ x = - 2

4 0
3 years ago
Read 2 more answers
Select the equation below that could represent:
Irina-Kira [14]

Answer:

I think it might be the 2 one

3 0
3 years ago
The class president is organizing a class trip to a nearby amusement park for 314 students. The regular price is $35 per ticket.
salantis [7]

Answer:

287 students were eligible for the discount :)

Step-by-step explanation:

7 0
2 years ago
The function f(x) = 4(4)x represents the growth of a fly population every year in a remote swamp. Jackie wants to manipulate the
Sauron [17]

The function f(x) = 4(4)x represents the growth of a fly population every year in a remote swamp.

calculates three times a year, not just once a year.

f(x)= 4(4)^x

3 times a year

so x becomes 3x

f(x)= 4(1+r)^{3x}

4(4)^x=4(1+r)^{3x}

Take log on both sides

log(4)^x=log(1+r)^{3x}

log(4)^x=log(1+r)^{3x}

Use log property and move exponent before log

xlog(4)=3xlog(1+r)}

Divide both sides by x

log 4 = 3 log(1+r)

Solve for '1+r'

log 4 = log(1+r)^3

Remove log from both sides

4 = (1+r)^3

take cube root on both sides

1.584740= 1+r

1+r = 1.59

f(x)= 4(1+r)^{3x}

so equation becomes

f(x)= 4(1.59)^{3x}

1+r = 1.59

subtract 1 from both sides

So r= 59 = 59%

So growth factor is 59%

Answer is option C



5 0
3 years ago
What is the vertex of the quadratic function f(x) = (x - 6)(x + 2)?
earnstyle [38]
The vertex is (2,-6)
8 0
3 years ago
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