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Zepler [3.9K]
4 years ago
13

Plsss help i don't knwo thai

Mathematics
1 answer:
topjm [15]4 years ago
7 0

Question 4: The value of x is 4.5.

Question 5: The value of x is 15.6.

Solution:

Question 4:

The given triangle is a right triangle.

Using trigonometric formulas for a right triangle.

$\sin \theta=\frac{\text { opposite }}{\text { hypotenuse }}

$\sin C=\frac{AB}{BC}

$\sin 45^\circ=\frac{x}{6.4}

$\frac{1}{\sqrt{2} } =\frac{x}{6.4}

Multiply 6.4 on both sides, we get

$\frac{6.4}{\sqrt{2} }=x

x = 4.5

The value of x is 4.5.

Question 5:

The given triangle is a right triangle.

Using trigonometric formulas for a right triangle.

$\sin \theta=\frac{\text { opposite }}{\text { hypotenuse }}

$\sin E=\frac{EF}{DF}

$\sin 60^\circ=\frac{x}{18}

$\frac{\sqrt3}{2} =\frac{x}{18}

Multiply 18 on both sides, we get

x = 15.6

The value of x is 15.6.

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zalisa [80]
Subtract 4 from both sides. 

2a+4>12

2a>8

Divide by 2. 

a>4

I hope this helps!

Brainliest answer is always appreciated!
4 0
3 years ago
Aleka and Helene both opened savings accounts that earn 2.5% interest a year. Aleka puts $2,500 into her account. Helene put $1,
Angelina_Jolie [31]

Answer:

h(x)=1000(1.025)^x-200x.

Step-by-step explanation:

We are given function f for Aleka's amount

f(x)=2500(1.025)^x

And function for Helene's amount

g(x) = 1500(1.025)^x+200x.

Now, we need to find the difference of the functions h(x) = f(x)-g(x).

Subtracting f(x) and g(x), function, we get

h(x) =2500(1.025)^x-(1500(1.025)^x+200x)

Distributing minus sign over second parenthesis, we get

h(x) =2500(1.025)^x-1500(1.025)^x-200x

Subtracting 2500(1.025)^x-1500(1.025)^x, we get 1000.

Therefore, h(x)=1000(1.025)^x-200x.

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4 years ago
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Answer:

What's the question?

Step-by-step explanation:

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alina1380 [7]
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Andreyy89
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Hope this helps!
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