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LenaWriter [7]
3 years ago
11

An item is sold for £305. If this includes a mark up of 7%. Find the buying in price

Mathematics
1 answer:
Lady_Fox [76]3 years ago
4 0

Answer:

Let the original price be 'x'

7/100 * x + x = 305

(7x+100x)/100 = 305

107x = 305 * 100

107x= 30500

x= 30500/107

x= 285.04

Therefore, the original buying price is £ 285.04

Hope you understood......

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Answer:

∠GJK is 22°

Step-by-step explanation:

Because the shape is a rectangle we know that GH is parallel to JI

This means that because of the alternate angle rule we know that

5x+8 = 7x-16

Then we solve for x

5x+8-5x = 7x-16-5x

8+16=2x-16+16

\frac{24}{2}=\frac{2x}{2}

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So this means that ∠HJI is 68°

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3 years ago
Here are five number cards. 2 5 7 8 9 One of the cards is removed and the mean average of the remaining four number cards is 6.
Lubov Fominskaja [6]

Answer:

Card 7

Step-by-step explanation:

2+5+7+8+9 =31

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The only way to get a multiple of 6 is to subtract card 7, so card 7 is the answer.

7 0
3 years ago
For what value of x will the function f(x) = -3(x - 10)(x - 4) have a maximum value? Find the maximum value.
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Hello!

To find the maximum value of the function f(x) = -3(x - 10)(x - 4), the easiest way is to find the vertex using the formula: x = -b/2a.

Firstly, we need to simplify f(x).

f(x) = -3(x - 10)(x - 4)

f(x) = -3(x² - 14x + 40)

f(x) = -3x² + 42x + -120

Since the equation f(x) is now simplified to standard form, we can find the vertex.

a = -3, b = 42, and c = -120

x = -(42)/2(-3) = -42/-6 = 7

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f(x) = -3(-3)(4)

f(x) = 27

The vertex of f(x) is (7, 27).

Therefore, the maximum x-value for the function f(x) is 7.

4 0
3 years ago
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Dvinal [7]

Answer:

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Step-by-step explanation:

There are eight 2's so that equals 2^{8}

Hope this helps! :)

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