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ZanzabumX [31]
3 years ago
12

Ida scores 15 out of 25 marks in a maths test what is her score as a percentage?

Mathematics
1 answer:
inna [77]3 years ago
5 0
60% is her score as a percentage
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Heather, Shen, and Aldo served a total of 57 orders Monday at the school cafeteria. Shen served 2 times as many as Aldo. Aldo se
pishuonlain [190]

Answer:

Shen served 32 orders, Aldo served 16 orders and Heather served 9 orders

Step-by-step explanation:

Let S represent Shen, A, Aldo and H, Heather

Now, let's interpret the question

Shen served 2 times as many as Aldo, this gives:

S = 2A          ...eq 1

Aldo served 7 more orders than Heater

A = 7 + H     ... eq 2

Slot in the value of A in eq 1

Therefore,

S = 2 (7 + H)

Expand the bracket

S = 14 + 2H

Shen, Heather and Aldo served a total of 57 orders

S + A + H = 57

Slot in the values of S and A

(14 + 2H) + (7 + H) + H = 57

14 + 2H + 7 + H + H = 57

Collect like terms

14 + 7 + 2H + H + H = 57

21 + 4H = 57

4H = 57 - 21

4H = 36

H = 9

Substitute the value of eq 2

A = 7 + H

A = 7 + 9

A = 16

Substitute the value of A in eq 1

S = 2A

S = 2(16)

S = 32

Therefore, Shen served 32 orders, Aldo served 16 orders and Heather served 9 orders

5 0
3 years ago
Help me with these2 question plz and I will press the thanks button
den301095 [7]
7) 62 - 9.817
= 52 . 183

8) 35.1 + 4.89
= 39 . 99


Hope I can help you :)

6 0
3 years ago
PLZZ HELP ME THIS IS A NO RETAKE QUIZ IT WOULD BE GREATLY APPRECIATED
MariettaO [177]

Answer:122

Step-by-step explanation:

4 0
3 years ago
x+(x+3)+x^2=75 Please help........ Everyone is giving me answers i know arent true...
son4ous [18]

x + (x + 3) + x^{2} = 75

so you will add up all of the x 's but NOT the x^2

2x + 3 + x^{2} = 75

Rearrange to put the x^2 in front of 2x

x^{2} + 2x + 3 = 75

subtract the 75 from both sides

x^{2} + 2x - 72 = 0

8 0
3 years ago
Can someone help with these two questions
kherson [118]

11,513 is the answer I really don't know how to write it all out sorry

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2 years ago
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