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MissTica
2 years ago
7

Need help with this questions

Mathematics
1 answer:
lora16 [44]2 years ago
3 0

Answer:

8.2cm

Step-by-step explanation:

Using SOH CAH TOA

cos theta = adjacent/hyp

cos 47 = h/12

h = 12cos47

h = 12(0.6819)

h = 8.18

Hence the height h to 1 dp is 8.2cm

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6 0
3 years ago
Ten less than three times the sum of a number and five is equal to twenty-nine. What is the number ?
kozerog [31]
Hello!
So the following would be your equation.
3(x+5)-10= 29
Your first step would be to use the Distributive Property based upon PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction). Since we have Parenthesis, we distribute first.
3(x+5)-10=29
^ ^
——————
So, your new equation would be—
3x+15-10=29
Now, you need to combine like terms—
15-10=29
3x+5=29
——————
Therefore your new equation is—
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Now you need to move the constants (5,29) to one side of the equal sign. To do this, you would use the Subtraction Property of Equality and rid the 5–
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——————
Your equation is now—
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Finally, you need to remove the 3 from x. This means you must use the Division Property of Equality, and rid the 3.
3x=24
— —
3 3
Your solved equation is—
X=8

Hope this helped!
~KayEmQue

3 0
3 years ago
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