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sergey [27]
3 years ago
12

Evaluate the value of x to 1 d.p Thank you

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0

Answer:

value of x = 2.8

Step-by-step explanation:

By law of cosines,

{a}^{2}  =  {b}^{2}  +  {c}^{2}   - 2 \times b \times c \times cos(100) \\  {x}^{2}  =  {13}^{2}  +  {10}^{2}  - (2 \times 13 \times 10 \times cos100) \\  = 169 + 100 - 260 \times 0.862 \\  = 269 - 260 \times 0.862 \\  = 7.758 \\x =  \sqrt{7.758 }  \\  = 2.785 \\  = approx \: 2.8

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KATRIN_1 [288]

Answer:

∠BAC = 105°

Step-by-step explanation:

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reduce:

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8 0
3 years ago
The question is in the photo. Determine an equation for the pictured graph. Please help!!
Misha Larkins [42]
<h3>Answer: (x+1)^3*(x-2)</h3>

Explanation:

It's probably not obvious, but the squiggly portion through the x intercept x = -1 is a triple root. This is because this portion resembles a cubic graph. If instead it was a more straightish line through this root, then we'd have a single root.

So because x = -1 is a triple root, this means the factor (x+1) has the exponent 3. We have the factor (x+1)^3

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3 years ago
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Kobotan [32]
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6 0
3 years ago
Complete the solution of the equation. Find the<br> value of y when x equals -8.<br> 3x + 5y = -59
Dafna1 [17]

Answer:

y = -7

Step-by-step explanation:

To answer this question, we must first plug in -8 for x:

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/5      /5

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7 0
3 years ago
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allsm [11]

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Step-by-step explanation:

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1/2 ⇒50%

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6 0
4 years ago
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