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3 years ago

A 9-kg of mangoes for 12$_____per kg

1 answer:

5 0

If 9kg costs 12$, then a single kg costs around 1.3$

This is done with a simple proportion

9 : 12 = 1 : X
x = 12/9
x = 1.33

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Use a TENS fact to subtract 13 take away 5

podryga [215]

13 - 5 8 hic fhfgghgggfdfr

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3 years ago

Shown is a pentagon, with the size of<br> each angle shown. Work out the largest angle.

algol13

Answer:

I think it would be the bottom left angle, x + 20 = 20x.

Why the others are smaller:

10x (x + 10)

12x (2x + 10)

10x (x + 10)

Step-by-step explanation:

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3 years ago

Read 2 more answers

Graph the inverse circular function by hand, given f(x) = 3sin(2x) ;-pi/4 ≤ ≤pi/4

nasty-shy [4]

Part a)

a) The given function is

$f(x) = 3 \sin(2x)$

We let

$y = 3 \sin(2x)$

Interchange x and y.

$x= 3 \sin(2y)$

Solve for y;

$\frac{x}{3} = \sin(2y)$

$y = \frac{1}{2} { \sin}^{ - 1}( \frac{x}{3} )$

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

Part b) The range of f(x) refers to y-values for which f(x) exists.

The range of f(x) is

$- 3 \leqslant y \leqslant 3$

This is because the function is within y=-3 and y=3.

c) The range of

${f}^{ - 1} (x)$

$- \frac{ \pi}{4} \leqslant y \leqslant \frac{\pi}{4}$

The domain is -3≤x≤3

This is because the domain and range of a function and its inverse swaps.

Part d) The graph is shown in the attachment.

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4 years ago

Kevin ran 6/7 miles and his brother james ran 10 miles. How many miles did the two of them ran.

masya89 [10]

Answer:

16.7 miles

Step-by-step explanation:

6.7+10=16.7

The two of them ran 16.7 miles.

7 0

3 years ago

What is a proof of the volume of a pyramid

lora16 [44]

The formula for the volume of a pyramid (V) is 1/3 the area of the base (B) multiplied by the height (H). If that’s what you’re asking:)

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3 years ago