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Hunter-Best [27]
3 years ago
14

If you multiply me by 2, then divide the answer by 2, then divide again by 2, you get a quotient of 5. What number am I?

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
3 0
The number is 10
10*2=20
20/2=10
10/2=5
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In triangleABC, angle B= 90 degrees, cos(C)=15/17 and AB = 16 what is the measure of Angle A, Angle C and angle AC
Sergeeva-Olga [200]

Answer:

m∠C=28°, m∠A=62°, AC=34.1 units

Step-by-step explanation:

Given In ΔABC, m∠B = 90°, , and AB = 16 units. we have to find m∠A, m∠C, and AC.

As,  cos(C)={15}/{17}

⇒ angle C=cos^{-1}(\frac{15}{17})=28.07^{\circ}\sim28^{\circ}

By angle sum property of triangle,

m∠A+m∠B+m∠C=180°

⇒ m∠A+90°+28°=180°

⇒ m∠A=62°

Now, we have to find the length of AC

sin 28^{\circ}=\frac{AB}{AC}

⇒ AC=\frac{16}{sin 28^{\circ}}=34.1units

The length of AC is 34.1 units

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3 years ago
Why is it undefined for the equation 0/0?
kodGreya [7K]

Answer:

Because anything divided by 0 is undefined. For example, 7/0 is undefined because 7 is being divided by 0 and that cant happen.

8 0
2 years ago
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Martin was given this expression to simplify: 23x + xy – y + 3y + 5 – 20x + 6xy He simplified the expression to: 43x + 7xy −3y W
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Answer:

Step-by-step explanation:

23x + xy - y + 3y + 5 - 20x + 6xy = 23x - 20x + xy  + 6xy -y + 3y + 5

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Errors:1) The combined coefficients of the x terms should be 3x, not 43x

2) The coefficients of the y terms have been multiplied.

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explicit formula for an, the nth term of the sequence 19,24,29

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Step-by-step explanation:

We need to Write an explicit formula for an, the nth term of the sequence 19,24,29

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The Formula used for explicit formula is: a_1=First \ term ; \ a_n=a_{n-1}+d

Where d is common difference and n is nth term of sequence.

So, explicit formula for an, the nth term of the sequence 19,24,29

a_1=19 ; \ a_n=a_{n-1}+5

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