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2 years ago

10 tens - 1 ten 1 tenth

Mathematics

1 answer:

Ann [662]2 years ago

3 0

1 tens cause 1 ten plus one 1 tenth is 11 and 11-10 is 1 right

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In a word game, you choose a tile from a bag, replace it, and then choose another. If there are 21 vowels and 18 consonants, wha

Nonamiya [84]

Answer:

21 vowels.....15 consonants.......added = 36 tiles

probability of first picking a consonant : 15/36 reduces to 5/12

replacing it...

probability that second pick is a vowel : 21/36

probability of both : 5/12 * 21/36 = 105 / 432 reduces to 35/144 <===

Step-by-step explanation:

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2 years ago

Find exact values for sin θ and tan θ if cos θ = -4/9 and tan θ > 0.

julsineya [31]

Answer:

Part 1) $sin(\theta)=-\frac{\sqrt{65}}{9}$

Part 2) $tan(\theta)=\frac{\sqrt{65}}{4}$

Step-by-step explanation:

we have that

The cosine of angle theta is negative and the tangent of angle theta is positive

That means that the sine of angle theta is negative

step 1

Find $sin(\theta)$

we know that

$sin^{2}(\theta) +cos^{2}(\theta)=1$

we have

$cos(\theta)=-\frac{4}{9}$

substitute

$sin^{2}(\theta) +(-\frac{4}{9})^{2}=1$

$sin^{2}(\theta) +\frac{16}{81}=1$

$sin^{2}(\theta)=1-\frac{16}{81}$

$sin^{2}(\theta)=\frac{65}{81}$

square root both sides

$sin(\theta)=\pm\frac{\sqrt{65}}{9}$

Remember that

In this problem the sine of angle theta is negative

$sin(\theta)=-\frac{\sqrt{65}}{9}$

step 2

Find $tan(\theta)$

we know that

$tan(\theta)=\frac{sin(\theta)}{cos(\theta)}$

we have

$sin(\theta)=-\frac{\sqrt{65}}{9}$

$cos(\theta)=-\frac{4}{9}$

substitute the given values

$tan(\theta)=-\frac{\sqrt{65}}{9}:-\frac{4}{9}=\frac{\sqrt{65}}{4}$

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3 years ago

Claire wants to start a stamp collection. She spends $15 on an album to hold her stamps and $1.25 for each stamp. If she has $40

enyata [817]

Answer:

Step-by-step explanation:

40 - 15 = 25

25/1.25=20

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2 years ago

A boy stands 12 metres from the foot of the building and observes the angle of elevation of the top of the building. The height

nikitadnepr [17]

Answer:

What!!

Step-by-step explanation:

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1 year ago

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185 times 28 please help me

aev [14]

The answer is 5,180! I used a calculator

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2 years ago

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