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3 years ago

HELPPPP WILL GIVE BRAINLIEST TO FIRST RIGHT ANSWER

Mathematics

2 answers:

DIA [1.3K]3 years ago

8 0

Answer:

D. (0, 7)

Step-by-step explanation:

formula:

y = mx + b

x is an unknown variable.

m is the slope.

b is the y-intercept.

y = 8x + 7

(m) (b)

you are looking for b.

b = 7

faltersainse [42]3 years ago

6 0

Answer:

The answer is D

Step-by-step explanation:

sorry if im incorrect

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Aidan is participating in an 8 mile walk for his favorite charity. The organizers used a coordinate grid to plot the course. The

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Answer:

Aidan is 2 miles far from the ending point when he reaches the water station.

Step-by-step explanation:

The locations of the starting point, water station and ending point are (3, 1), (3, 7) and (3, 9), all expressed in miles. First we determine the distances between starting and ending points and between starting point and water station by the Pythagorean Theorem:

From starting point to ending point:

$D = \sqrt{(3-3)^{2}+(9-1)^{2}}$ (Eq. 1)

$D = 8\,mi$

From starting point to water station:

$d = \sqrt{(3-3)^{2}+(7-1)^{2}}$ (Eq. 2)

$d = 6\,mi$

The distance between the water station and the ending point is:

$s = D-d$ (Eq. 3)

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$s = 2\,mi$

Hence, Aidan is 2 miles far from the ending point when he reaches the water station.

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3 years ago

Shaquille bought 2 umbrellas and 3 hats and spent between $30 and $50. Each umbrella costs the same amount. EAch hat costs the s

DiKsa [7]

Answer:

The least she could of spent would be $41

Step-by-step explanation:

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3 years ago

The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated

statuscvo [17]

We want to see how long will take a healthy adult to reduce the caffeine in his body to a 60%. We will find that the answer is 3.55 hours.

We know that the half-life of caffeine is 4.8 hours, this means that for a given initial quantity of coffee A, after 4.8 hours that quantity reduces to A/2.

So we can define the proportion of coffee that Jeremiah has in his body as:

P(t) = 1*e^{k*t}

Such that:

P(4.8 h) = 0.5 = 1*e^{k*4.8}

Then, if we apply the natural logarithm we get:

Ln(0.5) = Ln(e^{k*4.8})

Ln(0.5) = k*4.8

Ln(0.5)/4.8 = k = -0.144

Then the equation is:

P(t) = 1*e^{-0.144*t}

Now we want to find the time such that the caffeine in his body is the 60% of what he drank that morning, then we must solve:

P(t) = 0.6 = 1*e^{-0.144*t}

Again, we use the natural logarithm:

Ln(0.6) = Ln(e^{-0.144*t})

Ln(0.6) = -0.144*t

Ln(0.6)/-0.144 = t = 3.55

So after 3.55 hours only the 60% of the coffee that he drank that morning will still be in his body.

If you want to learn more, you can read:

brainly.com/question/19599469

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Answer:

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What happened to the snowman during the heat wave

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