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2 years ago

Write -0.7 (7 being repeated) as a fraction. Please show work, thank you!

Mathematics

1 answer:

KonstantinChe [14]2 years ago

3 0

The answer is -7/10
That one 0 is 10 since ten has one zero
And that 7 is a seven

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Solve: 2 + = 2. Give solutions in interval [0, 2)

Dovator [93]

$\because\cos 2x+\sin x=\sin 2x$ $\because\sin 2x=2\sin xcosx$ $\because\cos 2x=\cos ^2x-\sin ^2x$

→ Substitute cos 2x and sin 2x by their expressions

$\therefore\cos ^2x-\sin ^2+\sin x=2\sin x\cos x$

→ Subtract both sides by sin x

$\cos ^2x-\sin ^2x=2\sin xcosx-\sin x$

→ Take sin x as a common factor in the right side

$\therefore\cos ^2x-\sin ^2x=\sin x(2\cos x-1)$

From the graph, the equation has 4 solutions, the intersection points between the 2 graphs

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1 year ago

Fiona kept track of how many text messages she sent each day one week, the numbers were 21,57,32,25,33,42 and 46 on average how

Likurg_2 [28]

Answer:

256 just add them all up and u get the answer

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3 years ago

Here is the question !

Delvig [45]

Answer:

Step-by-step explanation:

Co-ordinates of F, G and H are:

F (-4, 5)

G (1, 10)

H (-9, 10)

You can find the lengths of sides by using the distance formula:

length(FG) = $\sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}}$ = $\sqrt{(1-(-4))^{2} + (10-5)^{2}} = 5\sqrt{2}$ units

Similarly,

length(GH) = 10 units

length(HF) = $5\sqrt{2}$ units

Hence, perimeter will be:

P = length(FG) + length(GH) + length(HF) = $10(\sqrt{2} + 1)$ units

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2 years ago

Why the product (-6)(-3) is positive

rewona [7]

Answer:

hope this helps

have a good day :)

Step-by-step explanation:

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2 years ago

What could the formula 2a + 2b represent?

sattari [20]

Becaus you have 2A and 2b this is what i think it could mean A+A+B+B

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3 years ago

Read 2 more answers