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Snowcat [4.5K]
2 years ago
10

Please help will give lots of points and mark brainless

Mathematics
1 answer:
Liula [17]2 years ago
7 0

Answer:

4, his answer was way off... idk if this is right but I tried

Step-by-step explanation:

s= √21d

42=√21d

42/21=√d

2=√d

4=d

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What is the simplified value of the expression -2.6+5.8​
solniwko [45]

Answer:

[See Below]

Step-by-step explanation:

✦ Solve:

  ✧ -2.6 + 5.8 = 3.2

✦ Sometimes in math simplify could mean just solve and get the smallest version of that number. That's what it means in this case. So the simplified version would be 3.2.

~<em>Hope this helps Mate. Feel free to message me if you need anything. </em>

4 0
2 years ago
A boulder falls off the top of a cliff during a storm. The cliff is 90 feet high.
andreev551 [17]

Answer:

It will take the boulder approximately 4.28 seconds to hit the road

Step-by-step explanation:

The given height of the cliff from which the boulder falls, h = 90 feet

The equation that can be used to find the time it takes the boulder to fall is h = u·t + (1/2)·g·t²

Where;

h = The height of the cliff = 90 ft.

u = The initial velocity of the boulder = 0 m/s (The boulder is assumed to be at rest when it falls)

g - The acceleration due to gravity ≈ 9.81 m/s²

t = How long it will take for the boulder to hit the road below

Plugging in the values gives;

90 = 0 × t + (1/2)×9.81×t² = 4.905·t²

∴ t = √(90/4.905) ≈ 4.28

The time it takes the boulder to hit the road, t ≈ 4.28 seconds.

7 0
2 years ago
I don´t understand this: Lin’s father is paying for a $20 meal. a) He has a 15%-off coupon for the meal. How much is the discoun
Naddika [18.5K]

You'll have to set this up as two separate problems. First, we want to take 15% off the original $20 bill. To do this, you're going to multiply 20 by .15, which gives you $3. So, 15% off $20 is $17.

Now, we want to find 7% of the new bill, so we're going to multiply 17 by .07 to get $1.19, and add it to the $17, making the final bill $18.19. You could also multiply $17 by 1.07 to get your final total without the extra step in the middle, but only do that once you're comfortable with the math.

Pls give brainiest

7 0
3 years ago
Is the eye color of people on commercial aircraft flightseye color of people on commercial aircraft flights a discrete random​ v
const2013 [10]

Answer: The eye color of people on commercial aircraft flights is a discrete random​ variable.

Step-by-step explanation:

A discrete random variable is a variable with real values that are countable.

A discrete random variable has a probability that is between 0 and 1 for each possible values and the sum of all these probabilities equals 1.

7 0
3 years ago
Select the correct slope and y-intercept for the
Schach [20]

Answer:2. because slope can't be negative and we just did this question.

Step-by-step explanation:

4 0
2 years ago
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