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tino4ka555 [31]
3 years ago
7

In a test Freya scores 25% more marks than Eva. Eva scores 50% more marks than Dominic. In total the three children score 140 ma

rks. The test if out of 80. What percentage does Dominic score in the test?​
Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0

Answer:

40

Step-by-step explanation:

Dominic: 32/80

Eva: 48/80

Freya: 60

32+48+60= 140

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Which is a solution to the equation?
Brrunno [24]

Answer:

-7 or 4

Step-by-step explanation:

use foil to get the quadratic equation:

x^2+5x-2x-10=18

x^2+3x-10=18

bring "18" to the left:

x^2+3x-10-18

x^2+3x-28

so what*what= -28

and

what+what=3

factors of -28: -7,4   -4,7   14,-2   -14,2    -28,1   -1,28

factors whose sum is 3: 7,-4

so substitute "7,-4" in place of 3:

x^2+7x-4x-28

2) split it in two groups

group 1) x^2+7x

group 2) -4x-28

x^2+7x has a GCF of "x"

x(x+7)

group 2) -4x-28 has a gcf of "-4"

-4(x+7)

3) (x-4) (x+7)=0

x-4=0

x=4

x+7=0

x=-7

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Hope this helps!

4 0
3 years ago
Velma must make five bottles of lemonade for the kids playing outside. Each bottle requires 3?4 cup of sugar. How much sugar doe
Nat2105 [25]

5×3/4=3.75

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4 years ago
Soro bought a $50.00 bus card at the beginning of the week. Each bus ride costs $2.50. He needs to have at least $20.00 on his c
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If Soro wants $20.00 on his card at the end of his month, you should subtract $20 from the $50 right away. This would give you $30. Each bus ride costs $2.50. So what you want to do is divide 2.50 by 30. Your answer should then be 12 rides.

4 0
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Read 2 more answers
If f(x) = –3x – 2, what is f(–5)?
Step2247 [10]
F(x) = -3x - 2
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3 0
3 years ago
Plz help me with this
guajiro [1.7K]

Answer: A) y = -4

<u>Step-by-step explanation:</u>

The midline is usually at y = 0.  In the given equation, the graph is shifted down 4 units so the new midline is at -4.

4 0
3 years ago
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