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Vinvika [58]
3 years ago
9

Help me problems! asap 1-7

Mathematics
1 answer:
Westkost [7]3 years ago
7 0
Multiply the triangles then divide to find the missing number
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Help please; I need the right answer ​
Ad libitum [116K]

Answer:

C.

Step-by-step explanation:

\cos x+\sqrt{2}=-\cos x \\ 2\cos x = -\sqrt 2 \\ \cos x = -\dfrac{\sqrt 2}{2}\\ \\ \Rightarrow x = \pm \arccos\Big(-\dfrac{\sqrt 2}{2}\Big)+2k\pi,\quad x\in \mathbb{Z}\\ \Rightarrow x =\pm\dfrac{3\pi}{4}+2k\pi\\ \\ \\k = -1 \Rightarrow x < 0\\\\ k=0 \Rightarrow x 2\pi

3 0
4 years ago
Read 2 more answers
F (x) = 5x^2 – 3x + 2, what is f(2)?<br><br> Please help!
butalik [34]

Answer:

f(x) = 32

by substituting the 2 in place of x

6 0
3 years ago
A manufacturing company uses crates to transport boxes of supplies. Two crates can hold 250 boxes. If the company needs to ship
il63 [147K]

Answer:

7 crates

Step-by-step explanation:

Let

x ----> the number of crates needed

we know that

Two crates can hold 250 boxes

so

using proportion

Find out how many crates they'll need for 875 boxes

\frac{2}{250}\frac{crates}{boxes} =\frac{x}{875}\frac{crates}{boxes}\\\\x=2(875)/250\\\\x=7\ crates

7 0
3 years ago
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How many tens and 15 ones equals 6 tens and 5 ones
alexdok [17]
65-15=50
50/10=5

You need 5 tens and 15 ones to equal 6 tens and 5 ones
8 0
3 years ago
Find an equation of the line through (1,8) and parallel to y = 4x +3. Write the equation using function notation.
brilliants [131]

Answer:

f(x) = 4x + 4

Step-by-step explanation:

When a line is parallel to another line, the slopes are always equal. Therefore,  the coefficient for x has to be four. If you multiply the y-coordinate by 4, you get 4. To get 8, you have to add four, so the equation is simply f(x) = 4x+4.

5 0
3 years ago
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