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SCORPION-xisa [38]
2 years ago
6

Please help!! giving brainlydo as much as you can​

Mathematics
1 answer:
Blizzard [7]2 years ago
5 0

Answer:

Step-by-step explanation:

7)Fraction of apple pie after eaten by Jeremy = 1 - (1/3) = 2/3

Fraction of pie eaten by  Sara

= \dfrac{1}{4}*\dfrac{2}{3} \\\\\\= \dfrac{1}{2*3}\\\\=\dfrac{1}{6}

8)

Fraction \ of \ allowence \ spent \ on \ magazines = \dfrac{5}{8}*\dfrac{2}{3}=\dfrac{5*1}{4*3}=\dfrac{5}{12}

Fraction left = 1 -\dfrac{5}{12}=\dfrac{12}{12}-\dfrac{5}{12}=\dfrac{12-5}{12}=\dfrac{7}{12}

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torisob [31]

Answer:

Step-by-step explanation:

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3 years ago
450 g in the ratio 2:13
jonny [76]

450 g in 2:13

<u>Total proportion asked for </u>=2+13=15

<u>Now comparing g with ratio, or whatever </u>

450/15=30g \implies Therefore 1 in ratio depicts of 30g

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\huge\mathfrak\colorbox{white}{}

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3 0
2 years ago
A farmer has a 100 ft by 200 ft rectangular field that he wants to increase by 15.5% by cultivating a strip of uniform width aro
Advocard [28]

Answer:

(a) The strip should be 5ft wide

(b) The strip around the outside field is 10ft wide.

Step-by-step explanation:

Given:

Length of the rectangular field, L= 200 ft

width of the rectangular field, w = 100 ft

Area of the rectangular field, A = 200ft x 100ft = 20000 ft^2

let the width of the strip = x

The strip around the outside field = 2x

If the field is increased by 15.5%

New area of the field = 1.155 x 20000 = 23,100 ft^2

The increase in area of the field = 3,100 ft

3,100 = New area of field - old area of the field

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3100 = 20000 + 400x 200x + 4x^2 - 20000

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Divide through by 4

775 = 150x + x^2

x^2 + 150x - 775 = 0

Factorize

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x = 5 ft

The strip should be 5ft wide.

The strip around the outside field = 2 x 5 ft = 10 ft

Thus, the strip around the outside field is 10ft wide.

3 0
3 years ago
The sum of two numbers is 55. The smaller number is 15 less than the larger number. What are the numbers?
Viktor [21]

Step-by-step explanation:

55=x+15

-15     -15

40=x

Hope it helps!

7 0
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