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dangina [55]
3 years ago
6

Okay so like for integers I use a number line to help me like negative on one side and positive on the other but how do I deal l

ike with these problems? And please explain :)

Mathematics
1 answer:
DENIUS [597]3 years ago
5 0

Answer:

Step-by-step explanation:

remember this:-

if +,- comes: change sign to - (eg. 8+(-4)= 8-4=4)

if -,+ comes: change sign to - (eg. 8-(+4)= 8-4=4)

if -,- comes: change sign to + (eg. 8-(-4)=8+4=12)

if +,+ comes: change sign to + (eg. 8+(+4)=8+4=12)

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URGENT PLEASE ANSWER ASAP!!!!!!!!!!!
Harrizon [31]

Answer: The gravity's constant value is 9.8 m/sec^2.

Explanation:

The given function shows the distance from the ground (in meters) at time t (in sec).

d(t)=-4.9t^2+50

First derivative of displacement is velocity and the second derivative of displacement is acceleration.

Differentiate the given equation with respect to t.

v(t)=d'(t)=-9.8t+0

Differentiate the above equation with respect to t.

a(t)=v'(t)=d''(t)=-9.8

It is given that gravity is the only acceleration affecting the object and the negative sign shows the downward direction of the object.

Therefore, the gravity's constant value is 9.8 m/sec^2.

7 0
3 years ago
Why is probability limited to numbers between 0 and 1​
jok3333 [9.3K]

Answer:

Probability by definition is the extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.

Since number of elements in the set of favourable cases is less than or equal to the number of elements in the set of whole number of cases, their ratio would always end up being 1 or less than one.

Probability equals one when favourable number of cases are same as that of the whole number of cases and probability equals zero when there is no favourable case

3 0
3 years ago
A study was done to investigate the relationship between a between eating sugary snacks and a test that measures a
tia_tia [17]

Answer:

Each additional sugary snack eaten is associated with a loss of five points on the test.

Step-by-step explanation:

6 0
3 years ago
1. Complete the following table for the proportional relationship:
RoseWind [281]

Add 1.50 to each time the price goes up

Step-by-step explanation: Multiply by two each time and you will have your answer 1 hot dog is 1.50 two are 3.00 use that method and you will have the correct answer

5 0
3 years ago
Given: △KLM, LM=20 3 <br> m∠K=105°, m∠M=30°<br> Find: KL and KM
hjlf

Okay, so the angle of K is 45° (180 - 135).

Draw a line that goes straight down from angle L and let's say that point is point Z. You can see that this triangle can be separated into two special triangles: the 45 45 90 triangle on the left (ΔLKZ) and the 30 60 90 triangle (ΔLMZ) on the right.

I don't know if you've learned this yet (just google them if you're confused):                                                                       - for a 45 45 90 triangle the sides are x, x, and x√2.                                                 - for a 30 60 90 triangle the sides are x, 2x, and x√3.

Since we know that LM is 20√3, using the 30 60 90 trick, you can see that LZ is 10√3 and MZ is 30.

Next, since LZ is 10 sqrt(3), using the 45 45 90 trick, <em>KL is 10√6</em> and KZ is 10 sqrt(3). Therefore, KM = KZ + MZ = <em>10√3 + 30</em>

<u>The answer: KL is 10√6, KM is 10√3 + 30</u>

(I'm sorry it's such a long explanation, pictures would have been better)

6 0
3 years ago
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