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wariber [46]
3 years ago
8

HELP PLEASE!! will Mark brainliest!!!

Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

sf=3/7

..................

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Please help I'm desperate :(
zubka84 [21]

Answer:

x=5

Step-by-step explanation:

<u>Similar Triangles</u>

By looking at the construction of the figure, we can safely assume both triangles are similar, i.e. their internal angles are equal and their sides are proportional. Following the proportion of the heights and bases of both triangles we can set this relationship:

\displaystyle \frac{45}{36}=\frac{5x}{20}

Simplifying both fractions

\displaystyle \frac{5}{4}=\frac{x}{4}

Solving for x

x=5

8 0
3 years ago
Find the f^-1(x) and it’s domain
borishaifa [10]

Answer:

f^{-1}(x) = (x + 8)^2

x \ge -8

Step-by-step explanation:

Given

f(x) = \sqrt x - 8

Solving (a): f^{-1}(x)

We have:

f(x) = \sqrt x - 8

Express f(x) as y

y = \sqrt x - 8

Swap x and y

x = \sqrt y - 8

Add 8 to both\ sides

x + 8 = \sqrt y - 8 + 8

x + 8 = \sqrt y

Square both sides

(x + 8)^2 = y

Rewrite as:

y = (x + 8)^2

Express y as: f^{-1}(x)

f^{-1}(x) = (x + 8)^2

To determine the domain, we have:

The original function is f(x) = \sqrt x - 8

The range of this is: f(x) \ge -8

The domain of the inverse function is the range of the original function.

<em>Hence, the domain is:</em>

x \ge -8

3 0
3 years ago
What is 0.0000465 written in scientific notation
Marta_Voda [28]
465•10-5
(That -5 is suppose to be an exponent
6 0
3 years ago
Read 2 more answers
PLEASE HELP ME BY SHOWING YOUR WORK TO THIS ANSWER!
ArbitrLikvidat [17]
Hey Dammy17,
Ok so what we need to do is "plug in" 2oz for x in the equation, 

So, 0.6 (2) + 11 = 
      0.12 + 11= 11.12 oz is the finishing weight. 
4 0
3 years ago
1. Find the mean of the data set: 11, 8, 18, 9, 15, 11.<br><br><br>Please help asap!​
Stels [109]

Answer:

12

Step-by-step explanation:

The mean is the average. Which is all of the numbers added together divided by the amount of numbers.

11+8+18+9+15+11=72

72÷6=12

7 0
3 years ago
Read 2 more answers
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