3 years ago

Can someone answer these? You will be marked brainliest with 25 points

Mathematics

1 answer:

Pie3 years ago

4 0

Answer:

it is sideways i cant read it

Step-by-step explanation:

I am confused

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3 years ago

Write an expression for 5 times the difference of twice a number and 4

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1. 50-x

2. 2x+189

3. x+109

4. x+99

5. x*(76-39)

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7. 45-3x

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Step-by-step explanation:

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2 years ago

The number of kilograms of water in a human body varies directly as the mass of the body. An 87-kg person contains 58 kg of wat

katen-ka-za [31]

Answer:

50 kg water.

Step-by-step explanation:

We have been given that the number of kilograms of water in a human body varies directly as the mass of the body.

We know that two directly proportional quantities are in form $y=kx$ , where y varies directly with x and k is constant of variation.

We are told that an 87-kg person contains 58 kg of water. We can represent this information in an equation as:

$58=k\cdot 87$

Let us find the constant of variation as:

$\frac{58}{87}=\frac{k\cdot 87}{87}$

$\frac{29*2}{29*3}=k$

$\frac{2}{3}=k$

The equation $y=\frac{2}{3}x$ represents the relation between water (y) in a human body with respect to mass of the body (x).

To find the amount of water in a 75-kg person, we will substitute $x=75$ in our given equation and solve for y.

$y=\frac{2}{3}(75)$

$y=2(25)$

$y=50$

Therefore, there are 50 kg of water in a 75-kg person.

3 0

3 years ago

You purchase a cell phone for $125. the value of the cell phone decreases by about 20% annually. write a function at models the

djverab [1.8K]

F(x)=125-(125*0.2x)
to find the value of the phone after 3 years, you put x=3.
f(3)=125-(125*0.2(3))
f(3)=50

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3 years ago

Bob flipped a coin and got "heads" 9 times in a row! What is the probability that the next flip will be a "head?"

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Answer:

50/50 chance

Step-by-step explanation:

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2 years ago