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natulia [17]
3 years ago
5

You need $2,500 as a deposit for a new car. You have already saved 50% of this amount. Which calculation could you use to check

how much you still need to save?
Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0

well, 50% is pretty much half.


you need 2500 for the deposit, you have 50% or half of that.


whatever% of anything is just (whatever/100) * anything.


50% of 2500 is just (50/100) * 2500 or 0.5 * 2500 or 1250.


how much more do you need? well, you need the other 50%.


50% of 2500 is just (50/100) * 2500 or 0.5 * 2500 or 1250.

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Please help i beg i never get these right
Anuta_ua [19.1K]

Answer:

\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}

Step-by-step explanation:

Given

\sin(105^o)

Required

Solve

Using sine rule, we have:

\sin(A + B) = \sin(A)\cos(B) + \sin(B)\cos(A)

This gives:

\sin(105^o) = \sin(60 + 45)

So, we have:

\sin(60 + 45) = \sin(60)\cos(45) + \sin(45)\cos(60)

In radical forms, we have:

\sin(60 + 45) = \frac{\sqrt 3}{2} * \frac{\sqrt 2}{2} + \frac{\sqrt 2}{2} * \frac{1}{2}

\sin(60 + 45) = \frac{\sqrt 6}{4} + \frac{\sqrt 2}{4}

Take LCM

\sin(60 + 45) = \frac{\sqrt 6 + \sqrt 2}{4}

Rewrite as:

\sin(60 + 45) = \frac{\sqrt 2 + \sqrt 6}{4}

Hence:

\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}

3 0
2 years ago
The axis of symmetry for the graph of the function f start bracket x end bracket equals one-quarter x square plus b x plus 10 is
zimovet [89]

The value of b is -3.

<h3>What is axis of symmetry?</h3>

Axis of symmetry is a line that divides an object into two halves,thereby creation a mirror like reflection of either side of the object.

Now the given function is,

f(x) = 1/4 x^2 bx + 10

and axis of symmetry is at x = 6

Now the quadratic function in standard form is given as,

f(x) = a x^2 bx + c

By comprison we get,

a = 1/4

c = 10

Since axis of symmetry is a vertical line

x = -b/2a

Therefore,

6 = -b/2*(1/4)

-b = 6*2*(1/4)

or, b = -12/4

or, b = -3

Hence,The value of b is -3.

More about axis of symmetry :

brainly.com/question/3514150

#SPJ1

3 0
1 year ago
A student records the feather colors and beak shapes of every bird observed in a park. What kind of data is the student recordin
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Answer:

the feather colors and beak shapes of every bird observed in a park.

Step-by-step explanation:

you said it in your question

4 0
3 years ago
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Effectus [21]

Answer:25

Evan has a summer job to pick berries on a farm.

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Step-by-step explanation:

3 0
3 years ago
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Answer:

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Hope this helps

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3 0
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