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Georgia [21]
3 years ago
5

What is the x-coordinate of the midpoint of the segment between (4 , -5) and (8 , 2)?

Mathematics
1 answer:
brilliants [131]3 years ago
8 0

Answer: -5

Solution: Calculate the midpoint of a segment defined by two points A(Xa , Ya) and B(Xb,Yb). The midpoint is a point whose x and y coordinates are given by

X coordinate of Midpoint= (Xa+Xb) / 2

Y coordinate of Midpoint= (Ya+Yb) / 2

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Supplemental Activities - Ch 1
Deffense [45]

x \geq -9; x \leq 6 or in interval notation [-9,6]

To find out what are the steps in solving the below inequality:

Given equation is 2x - 3 > 15

The absolute value function takes any term and transforms it to its non-negative form. Therefore, we must solve the term within the absolute value function for both its negative and positive equivalent.

−15≤2x-3≤15

First, subtract 3  from each segment of the system of equations to isolate the x term while keeping the system balanced:

−15−3≤2x-3−3≤15−3

−18≤2x-6≤12

−18≤2x-6≤12

Now, divide each segment of the system by 2 to solve for x while keeping the system balanced:

-\frac{18}{2}\leq \frac{2x}{2} \leq \frac{12}{2}

-9 \leq x \leq 6

or

x \geq -9; x \leq 6

or in interval notation [-9,6]

on the horizontal axis.

The lines will be a solid line because the inequality operators contain "or equal to" clauses.

We will shade between the lines to show the interval:

Hence the steps to solve an inequality has been show

To learn more about inequalities click here brainly.com/question/24372553

#SPJ9

8 0
1 year ago
The number N of bacteria present in a culture at time t (in hours) obeys the equation N = 1000e^0.01t After how many hours will
jasenka [17]

Answer: N(t) = (2^t)*1500

Step-by-step explanation:

Let's define the hour "zero" as the initial population.

So if N(t)  is the number of bacteria after t hours, then:

N(0) = 1500.

Now, we know that the population doubles every hour, so we will have that after one hour, at t = 1

N(1) = 2*1500 = 3000

after two hours, at t = 2.

N(2) = 2*(2*1500) = (2^2)*1500

After three hours, at t = 3

N(3) = 2*(2^2)*1500 = (2^3)*1500

So we already can see the pattern, the number of bacteria after t hours will be:

N(t) = (2^t)*1500

5 0
3 years ago
N ÷ 10 exponent 2 = 0.123<br><br>(Help please)
Ilia_Sergeevich [38]

Answer:

n = 12.3

Step-by-step explanation:

I'm assuming we're looking for n, to find it, we need to isolate it.

Our equation will be solved through PEMDAS :

Parenthesis

Exponent

Multiply/Divide

Add/Subtract

n / 10^2 = 0.123

Get rid of the exponent by applying it to 10,

10^2 = 100

n/100 = 0.123

Now to get rid of the division, multiply the denominator (100) to both sides.

n/100 * 100 = 0.123 * 100

n = 12.3

4 0
3 years ago
Read 2 more answers
You can spend no more than $100 on a party you are hosting. The cost per guest is $8. What is the greatest number of guests that
spayn [35]

Answer:

the greatest number of guests is 12 guests

Step-by-step explanation:

100÷8=12.5

3 0
3 years ago
Read 2 more answers
A scientist measures a substance to be 0.8 grams. Calculate the percent of error in the measurement. Show all work for full cred
Volgvan
You'll need to give a bit more information for the question to be answered. You can only calculate the percentage of error if you know what the mass of the substance *should be* and what you've *measured* it to be.

In other words, if a substance has a mass of 0.55 grams and you measure it to be 0.80 grams, then the percent of error would be:

percent of error = { | measured value - actual value | / actual value } x 100%

So, in this case:

percent of error = { | 0.80 - 0.55 | / 0.55 } x 100%
percent of error = { | 0.25 | / 0.55 } x 100%
percent of error = 0.4545 x 100%
percent of error = 45.45%

So, in order to calculate the percent of error, you'll need to know what these two measurements are. Once you know these, plug them into the formula above and you should be all set!
6 0
3 years ago
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