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leva [86]
2 years ago
13

Need help please

Mathematics
1 answer:
svp [43]2 years ago
4 0
-6,6 if it reflects on the left side
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Find the prime factorization: 49 i am stuck
ollegr [7]

Answer:

49 can be broken down into 7 * 7 so the prime factorization is simply 7².

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3 years ago
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What is the answer of 4x if x=2
Semmy [17]

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8

Step-by-step explanation:

4(x)

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8

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3 years ago
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Help with this please
aliina [53]
AB = 6 cm, AC = 12 cm, CD = ?

In triangle ABC, ∠CBA = 90°, therefore in triangle BCD ∠CBD = 90° also.

Since ∠BDC = 55°, ∠CBD = 90°, and there are 180 degrees in a triangle, we know ∠DCB = 180 - 55 - 90 = 35°

In order to find ∠BCA, use the law of sines:
 
sin(∠BCA)/BA = sin(∠CBA)/CA
sin(∠BCA)/6 cm = sin(90)/12 cm
sin(∠BCA) = 6*(1)/12 = 0.5
∠BCA = arcsin(0.5) = 30° or 150°
We know the sum of all angles in a triangle must be 180°, so we choose the value 30° for ∠BCA

Now add ∠BCA (30°) to ∠DCB = 35° to find ∠DCA.
∠DCA = 30 + 35 = 65°

Since triangle DCA has 180°, we know ∠CAD = 180 - ∠DCA - ∠ADC = 180 - 65 - 55 = 60°

In triangle DCA we now have all three angles and one side, so we can use the law of sines to find the length of DC.

12cm/sin(∠ADC) = DC/sin(∠DCA)
12cm/sin(55°) = DC/sin(60°)
DC = 12cm*sin(60°)/sin(55°)
DC = 12.686 cm
3 0
3 years ago
Fill in the blanks
katen-ka-za [31]
1 - 9
2 - 87
3 - -2
4 - -9
that’s the answers for them :), have a great day !! :)
5 0
3 years ago
Express 5.1146• 10^3 in standard notation
charle [14.2K]

Answer:

5,114.6

Step-by-step explanation:

5.1146 x 10^3 means move decimal point 3 to the right to get the answer

4 0
3 years ago
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