All Questions +0184527 Questions

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37
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In triangle ABC, sin A = 4/5. Find cos B.

Guest Nov 30, 2020
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42
1
+467

What is the numerical value of x = \frac{1}{2-\frac{1}{2-\frac{1}{2-\ldots}}} ?

dududsu2  Nov 30, 2020
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28
1

Find cos A

Guest Nov 30, 2020
0
57
1
+467

There exist several positive integers $x$ such that $\frac{1}{x^2+x}$ is a terminating decimal. What is the second smallest such integer?

dududsu2  Nov 30, 2020
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50
3
+467

Let $S = 1 - 2 + 3 - 4 + \cdots + 2009 - 2010$. What is the residue of $S$, modulo 2010?

dududsu2  Nov 30, 2020
0
74
1
Guest Nov 30, 2020
0
55
2
+467

What is the remainder when $5^{30}$ is divided by 7?

dududsu2  Nov 30, 2020
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43
1
Guest Nov 30, 2020
0
38
1
+467

If$$1+12+123+1234+12345+123456+1234567+12345678$$is congruent to $n$ modulo 9, where $0\le n<9$, what is the value of $n$?

dududsu2  Nov 30, 2020
0
65
1
+467

What is the ones digit of $1^{2009} + 2^{2009} + 3^{2009} + \cdots + 2009^{2009}?$

dududsu2  Nov 30, 2020
0
69
1
+467

Suppose that $p$ is prime and $1007_p+306_p+113_p+125_p+6_p=142_p+271_p+360_p$. How many possible values of $p$ are there?

dududsu2  Nov 30, 2020
0
57
3
+467

A base-10 integer $n=4\triangle_9=\triangle0_7$, where $\triangle$ represents a single digit. What is the value of $n$?

dududsu2  Nov 30, 2020
0
42
1

Two sectors of a circle of radius 12 overlap as shown

Guest Nov 30, 2020
0
39
1
+467

How many of the same digits are found in the base 7 and base 8 representations of $629_{10}$?

dududsu2  Nov 30, 2020
0
55
4

If $x$, $y$, and $z$ are real numbers for which? Then what is $xyz$

Guest Nov 30, 2020
0
35
0
Guest Nov 30, 2020
0
68
2

You have linear functions $p(x)$ and $q(x)$. You know $p(2)=3$, and $p(q(x))=4x+7$ for all $x$. Find $q(-1)$.

Guest Nov 30, 2020
0
63
3
+467

Find the sum of all values of $x$ such that $\log_{3^2}(x-1)^2 = -1.$

dududsu2  Nov 30, 2020
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40
0

24 + x chia hết cho 2 và 3

Guest Nov 30, 2020