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katrin2010 [14]
3 years ago
13

Solve the system of equations and choose the correct ordered pair. 2x+4y=16 2x-4y=0

Mathematics
1 answer:
miss Akunina [59]3 years ago
8 0

Answer:

(4, 2)

Step-by-step explanation:

Start by combining the equations

2x + 2x = 4X

4y - 4y = 0

16 + 0 = 16

4x = 16

x = 4

Now that you have one variable plug it back in to one of the original equations

2(4) + 4y = 16

8 + 4y = 16

4y = 8

y = 2

(4, 2)

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which of the following expressions is the definition of the derivative of f(x)=ln(x) at the point (5,ln5)
Doss [256]
The definition of the derivative is
\frac{f(x + h) - f(x)}{h}
as h goes to 0. So since the f is ln(x)

\frac{ln(x+h)-ln(x)}{h}

Since it is evaluated at 5 (the point 5, ln5), it is

\frac{ln(5+h)-ln(5)}{h}
8 0
3 years ago
At 10:57 A.M. A submarine was at a depth of feet. Its depth then changed at a rate of -8 feet per minute. What was its depth at
Tatiana [17]

Answer:

<h3>48 feet</h3>

Step-by-step explanation:

First we need to get the total minutes used by the submarine from  10:57 A.M to  11:03 A.M. The total minutes used within the specified period of time is 6 minutes.

If its depth then changed at a rate of 8 feet per minute, the submarine depth after 6 minutes will be expressed as shown;

8 feet = 1minute

x feet = 6 minutes

cross multiply;

x * 1 = 8 * 6

x = 48 feet

Hence the submarine depth at 11.03AM is 48 feet

4 0
3 years ago
Jamiyah and Samantha went to a grocery store and purchased a bag of 22 apples. Let x represent the Jamiyah’s portion of the appl
Serhud [2]

Answer:

 

Step-by-step explanation:

5 0
3 years ago
Sarah is renting a car for her weekend trip to the mountains. The total cost of the rental, f(x), as it relates to the number of
STatiana [176]

Answer:

f(x) = 1/4x + 25

Step-by-step explanation:

8 0
3 years ago
Given the point (2,3) and the slope of 4, find y when x =22
Lisa [10]
<span>y = mx + b
3 = 8 + b
3 - 8 = b
-5 = b
m = 4 and b = -5
y = 4x - 5
x = 22:
y = (4 x 22) - 5
y = 88 - 5
y = 83
</span>
Hope This Helps You!
Good Luck Studying :)
7 0
3 years ago
Read 2 more answers
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