3 years ago

Represent the following algebraically. A number, x, decreased by the sum of 2x and 5

Mathematics

1 answer:

sashaice [31]3 years ago

8 0

The answer is x-(2x+5)

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Trick question<br> whats 50 divided by half plus 10

hoa [83]

$50:\frac{1}{2}+10=50\cdot\frac{2}{1}+10=50\cdot2+10=100+10=\boxed{110}$

5 0

3 years ago

The square below has a side length of 5 cm. What is the length of the missing side? Round your answer to the nearest whole numbe

Misha Larkins [42]

Answer:

D. about 7 cm

Step-by-step explanation:

You can use the pythagorean theorem.

You have a triangle with sides of 5 and 5, so that means the third side is:

$a^2 + b^2 = c^2 --> 5^2 + 5^2 = c^2\\25 + 25 = c^2\\50 = c^2\\c = 5\sqrt{2}$

rounding:

$5\sqrt{2} = 7$

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3 years ago

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One of the legs of a right triangle measures 9 cm and the other leg measures 16 cm.

aalyn [17]

Answer:

18.4 cm

Step-by-step explanation:

Using Pythagoras rule:

Hypotenuse =

$\sqrt{9 ^{2} + 16 ^{2} }$

= 18.4 cm

7 0

3 years ago

How do you express sin x + cos x in terms of sine only?

frez [133]

Answer:

$\sin x + \sqrt{1-\sin^2x}$

Step-by-step explanation:

Given: sin x + cos x

To change the given trigonometry expression in term of sine only.

Trigonometry identity:-

$\sin^2x+\cos^2x=1$
$\cos x=\sqrt{1-\sin^2x}$

Expression: $\sin x+\cos x$

We get rid of cos x from expression and write as sine form.

Expression: $\sin x + \sqrt{1-\sin^2x}$ $\because \cos x=\sqrt{1-\sin^2x}$

Hence, The final expression is only sine function.

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4 years ago

Lect the correct answer.

Reptile [31]

Answer:

b. day 2 is the farthest from 0

3 0

3 years ago

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