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Alex
3 years ago
11

Simply the expression-2.3(4r+5)-3.6r

Mathematics
2 answers:
marysya [2.9K]3 years ago
7 0
-12.8r - 11.5 that’s the answer to your question
laiz [17]3 years ago
3 0

Answer:

Step-by-step explanation:

you need to cancel out the brackets by multiplying -2.3 with every thing inside the brackets

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Maria added 45,273 and 37,687 and got the sum of 70,960. is maria's answer reasonable? explain.
ankoles [38]
Maria isn't correct of this. Adding these will get you 82960 (You add the numbers) She must have miscalculated.
7 0
3 years ago
Let f(x)=7x-13. Find f^-1(x).
vitfil [10]

Ok but allow my humble self to use y instead of f(x).

We have,

y=7x-13

If you wanna know what the inverse is swap the values of x and y,

x=7y-13

And now solve for y,

x+13=7y\implies\boxed{y=f^{-1}(x)=\frac{x+13}{7}}.

Hope this helps.

5 0
3 years ago
Read 2 more answers
How do you do trigonometric Ratios<br>​
iren2701 [21]
To calculate the sine of an angle, simply divide the length of the opposite side, 479.16, by the length of the hypotenuse, 610. To get the cosine, divide the length of the adjacent side, 377.5, by the length of the hypotenuse, 610.
4 0
3 years ago
What is the GCF of 42 and 91?
Neko [114]

Answer:

7

Step-by-step explanation:

7 0
3 years ago
The equation and answer
dolphi86 [110]

Answer:

The correct answer is 47 degrees.


Step-by-step explanation:

Use cosine.

cos(x)= adj/hyp

cos(x)=19/28

x=arccos(19/28)

Use a calculator

x is approximately 47 degrees.


8 0
3 years ago
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