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zhuklara [117]
3 years ago
13

Positive or negative depositing $85 in a bank account.Is that a positive or negative

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0
Negative because you take the money out
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URGENT PLEASE ANSWER THESE
Dimas [21]

Answer:

1A) 2 gallons of 20% solution and 3 gallons 15% solution needed

1B) 4 gallons of 20% solution and 1 gallons 15% solution needed

Step-by-step explanation:

1A) adding 20% salt and 15% water making 5 gallons of 17%

20% salt + 15% salt = 5 gallons of 17% salt

0.20x + 0.15(5 - x) = 0.17(5)

0.20x + 0.75 - 0.15x = 0.85

0.20x + 0.75 - 0.75 - 0.15x = 0.85 - 0.75

0.20x - 0.15x = 0.10

0.05x = 0.10

0.05x/ 0.05 = 0.10/0.05

x = 2 gallons (amount of 20% solution needed)

5 - x = 5 - 2 = 3 gallons (amount of 15% solution needed)

1B)

0.20x + 0.15(5 - x) = 0.19(5)

0.20x + 0.75 - 0.15x = 0.95

0.20x + 0.75 - 0.75 - 0.15x = 0.95 - 0.75

0.20x - 0.15x = 0.20

0.05x = 0.20

0.05x / 0.05 = 0.20/0.05

x = 4 gallons (amount of 20% solution needed)

5 - x = 5 - 4 = 1 gallons (amount of 15% solution needed)

Learn more about System of Equations here: brainly.com/question/12526075

4 0
2 years ago
21+19=40;19+21=40 a commutative property or associative property
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Answer:

it is a commutative property

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2 years ago
Help!!!! f(x)=10x+3 g(x)= -7x-4
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8x + 7

Step-by-step explanation:

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La parte superior de un edificio de 48m de altura es observada bajo un ángulo de elevación de 53°. ¿Cuál es la distancia entre e
mrs_skeptik [129]

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Step-by-step explanation:

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3 years ago
Guys, please please help me
agasfer [191]

Answer:

508.68

Step-by-step explanation:

Upper and lower surfaces of the cylinder:

\pi r^{2} =9\pi \\S=2*9\pi =18\pi

Side area of the cylinder:

S=sh=\pi dh=6\pi *3*8=144\pi

The total area:

S=114\pi +18\pi =162\pi =162*3.14=508.68

5 0
3 years ago
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