All categories

2 years ago

Please answer I will mark as the brainliest the one whose going to answer right

Mathematics

1 answer:

abruzzese [7]2 years ago

6 0

A. Right triangles.

B. Height of 16cm with bases 20cm

C. 320

D.?

You might be interested in

What is f–1(8)??<br><br> Please select the best answer

notka56 [123]

Answer:

$f^{-1}(8)=\frac{3}{2}$

Step-by-step explanation:

Given f(x)= $2x+5$

We have to find $f^{-1}(8)$

In order to find $f^{-1}(x)$ we have to make x as the subject of the formula

Let us assume f(x)=y

⇒ $2x+5=y$

Subtracting both sides by 5

$2x+5-5=y-5$

$2x=y-5$

Dividing both sides by 2

$\frac{2x}{2}=\frac{y-5}{2}$

⇒ $x=\frac{y-5}{2}$

Now substituting y with x

we have $f^{-1}(x)=\frac{x-5}{2}$

Now $f^{-1}(8)=\frac{8-5}{2}$

= $\frac{3}{2}$

So option (ii) is correct

5 0

2 years ago

Read 2 more answers

What is the value of the function at x = 3?<br><br> Enter your answer in the box.

Ainat [17]

When x is 3, y is 4
To do this, go to the right 3 units and go up until the line intersects with a grid point
At three, y is 4
Hope this helps!

5 0

3 years ago

Read 2 more answers

Does any one live in/by utah

erma4kov [3.2K]

What, huh? Oh wait what.

4 0

3 years ago

Read 2 more answers

Joe was planning a business trip to Canada, so he went

nika2105 [10]

Answer:

2203.20 pesos

Step-by-step explanation:

Joe's original amount was $200

#We convert this amount to $CDN:

$\$1=1.02\$CDN\\\\=200\times 1.02\\\\=204\$CDN$

Joe now has to convert the Canadian dollars to Mexican pesos(at a rate of 10.8 pesos per $1 CDN):

$=204\times10.8\\\\=2203.2$

Hence, he gets a total of 2203.20 pesos in exchange for his Canadian dollars.

4 0

3 years ago

Read 2 more answers

I dont have much time to do this.Hi! i really need help on the last paragraph(its a question) i know the ones before it, but you

Umnica [9.8K]

153.6x1.05= $161.28

$153.6 is the price. tax is 5% 1.05 represents tax and the whole so you can do it in one step

4 0

3 years ago