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svp [43]
3 years ago
15

20 points if you help me on this proublem

Mathematics
1 answer:
VMariaS [17]3 years ago
3 0

Answer:

1) f(x) = x/8 - 7

2) f(x) = 1 - x/3

3) f(x) = 20 - 0.25x

4) f(x) = x + 7

Step-by-step explanation:

f^-1 = 8(x + 7)

x + 7 = y/8

x = y/8 - 7

f(x) = x/8 - 7

f^-1 = -3(x - 1)

y/-3 = x - 1

x = 1 - y/3

f(x) = 1 - x/3

f^-1 = 4(20 - x)

y/4 = 20 - x

x = 20 - y/4

f(x) = 20 - x/4

f(x) = 20 - 0.25x

f^-1 = x - 7

y = x - 7

x = y + 7

f(x) = x + 7

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11Alexandr11 [23.1K]

Answer:

m1 = 72°

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Hope I was able to help you:))

4 0
3 years ago
The simple interest earned on a deposit of 4000 at 5% for 120 days
Ymorist [56]

Answer:A = $4,066.00

Step-by-step explanation:

Calculation:

First, converting R percent to r a decimal

r = R/100 = 5%/100 = 0.05 per year.

Putting time into years for simplicity,

120 days / 360 days/year = 0.33 years.

Solving our equation:

A = 4000(1 + (0.05 × 0.33)) = 4066

A = $4,066.00

The total amount accrued, principal plus interest, from simple interest on a principal of $4,000.00 at a rate of 5% per year for 0.33 years (120 days) is $4,066.00.

* Hopefully this helps:) Mark me the brainlliest:)!!

<em>∞ 234483279c20∞</em>

5 0
3 years ago
a seismic wave is traveling through the earth at an average rate of speed of 8km/s. How long will it take the wave to travel 480
IrinaK [193]
The answer is 60 because 480 divided by 8 is 60.
4 0
3 years ago
Find the inequality represented by the graph​
FrozenT [24]

Answer:

y ≤ 1x-1

Explanation:

line is not dotted = ___ than or equal to

shaded area below line = less than

so: ≤

--

y=mx+b

y intercept -1 (line intersects y line on -1)

y=mx-1

points (1,0) (0, -1)

find slope

---

in conclusion, y ≤ 1x - 1

7 0
3 years ago
Read 2 more answers
Karen says every equilateral triangle is acute.is this true explain
goblinko [34]
Hey there!

An equilateral triangle is a triangle that has all equal sides and angles. All the angles in a triangle equal 180 degrees. All triangles have 3 angles. 180/3=60 Each angle in an equilateral triangle is equal to 60 degrees. Acute angles are less than 90 degrees, so: 60<90. This makes every equilateral triangle acute. 

I hope this helps!
~kaikers
5 0
3 years ago
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