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OLga [1]
3 years ago
6

What is the midpoint of AB?​

Mathematics
2 answers:
Dima020 [189]3 years ago
7 0

Answer:

(-4,-0.5)

Step-by-step explanation:

goldfiish [28.3K]3 years ago
3 0

Answer:

-4

Step-by-step explanation:

It’s -4

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Becky bought a new Apple computer for $1,205. The purchase price included a 6% sales tax. What's the actual selling price of the
blagie [28]

Answer:

D. $1,136.79

Step-by-step explanation:

In this example, we want to learn what the original price of the computer would be if the price is $1,205, and this includes a 6% sales tax. This means that this price is 106% of the original price (100% is the price, while 6% is the tax). Therefore:

1205 * 1.06 = 1136.79

7 0
3 years ago
The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm^2/
VARVARA [1.3K]

Answer:

The base is decreasing at 2 cm/min.

Step-by-step explanation:

The area (A) of a triangle is given by:

A = \frac{1}{2}bh   (1)

Where:

b: is the base

h: is the altitude = 10 cm

If we take the derivative of equation (1) as a function of time we have:

\frac{dA}{dt} = \frac{1}{2}(\frac{db}{dt}h + \frac{dh}{dt}b)

We can find the base by solving equation (1) for b:

b = \frac{2A}{h} = \frac{2*120 cm^{2}}{10 cm} = 24 cm

Now, having that dh/dt = 1 cm/min, dA/dt = 2 cm²/min we can find db/dt:

2 cm^{2}/min = \frac{1}{2}(\frac{db}{dt}*10 cm + 1 cm/min*24 cm)

\frac{db}{dt} = \frac{2*2 cm^{2}/min - 1 cm/min*24 cm}{10 cm} = -2 cm/min    

         

Therefore, the base is decreasing at 2 cm/min.

               

I hope it helps you!  

7 0
2 years ago
Simplify the following algebraic expression. 3/4(1/2x-12)+4/5​
Nana76 [90]

Answer:

Step-by-step explanation:

(3/8)x - 9 + 4/5

40(3/8x - 9 + 4/5)

15x - 360 + 32

15x - 328

5 0
3 years ago
Read 2 more answers
Make d the subject of this formula<br><br> H=d/3+2
Effectus [21]

Answer:

d= 3(h-2). hope you like it.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the slope and u-intercept of the equation represented by the following graph?
Alisiya [41]
The answer is E, the fifth answer choice,
slope = -1; y-intercept = 5

Hope this helps :)
8 0
3 years ago
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