3 years ago

Let f be a function such that f(x)=5x-3 is defined by the domain 2≤x≤5. The range of the function is

Mathematics

1 answer:

sasho [114]3 years ago

8 0

Answer:

1. Multiply like the - isn't there

2.add it

3. Idk I just out something XD

Step-by-step explanation:

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Jocelyn is 1.75 meters tall. At 1 p.m., she measures the length of a tree's shadow to be

bija089 [108]

The height of the tree = 15.34m

What is height?

Height is a way to measure someone or something from base to top or head to toe. In other words, height tells how tall someone or something is.

Given,

the height of Jocelyn = 1.75m

At 1 pm = 43.85

She is sway from tree = 38.6

therefore, 43.85 - 38.6 = 5.25

Therefore, height

1.75/5.25 = h/43.35

5.25h = 76.73

therefore, height = 15.34

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1 year ago

Find a quadratic model for the set of values: (-2, -20), (0, -4), (4, -20). Show your work.

Ivahew [28]

Ok... so this question can be solved by using simultaneous equations.

Use the general from of a parabola

$y = ax^2 + bx + c$

you know the value of c, the y-intercept... y = -4

which means the equation is

$y = ax^2 + bx - 4$

now use the other 2 points to get 2 equations in 2 unknowns

(-2, -20) just substitute

$-20 = (-2)^2a + (-2)b - 4 ~~~or~~~ -20 = 4a - 2b - 4$

this becomes

$4a - 2b = -16$

now the other equation using (4, -20)

The simplified form is

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3 years ago

A submarine is diving to a total depth of 45 feet. It descends 15% of the total depth in 1 minute. How deep will the submarine b

telo118 [61]

after 4 mins the sub reaches 27 feet

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3 years ago

A town uses positive numbers to track increases in population and negative numbers to track decreases in population. The populat

Alex73 [517]

Well heres what to do

300 residents 5yrs

divde 300 by 5= you get 60 a yr

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3 years ago