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Triss [41]
3 years ago
10

7 less than 4 times a number equals 13 ​

Mathematics
1 answer:
Lisa [10]3 years ago
4 0

Answer:

X = 5

Step-by-step explanation:

4x - 7 = 13

4x = 13 + 7

4x = 20

x = 20 / 4

x = 5

Hope it Helps :) !!

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Local extreme Value for each of the Following A) F(x)=x^² - 4x² +5​
kobusy [5.1K]

Answer:

max{x²-4x²+5} = 5 at x = 0

Step-by-step explanation:

1. Find the critical numbers by finding the first derivative of f(x), set it to 0 and solve for x.

f'(x)=0

We get:

f(x) = -3x^2+5\\f'(x) = -6x\\-6x = 0\\x = 0

So the critical number is x = 0.

2. Evaluate the first derivative by plugging in the critical number and see if the derivative is positive or negative on both sides:

f'(x) is positive when the x < 0 (for example: -6*(-1)=+)

f'(x) is negative when the x > 0 (for example: -6*(1)=-)

Therefore, you have a local maximum.

Now just get the Y value by plugging in the critical number in the original function. f(0)=5

local maximum is (0,5)

4 0
2 years ago
How do you write the following standard number in expanded notation?
Alex73 [517]
2 × 100 = 2002 × 10 = 202 × 1 = 20 × 0.1 = 07 × 0.01 = 0.07
D. <span>200 + 20 + 2 + 0.07</span>
3 0
3 years ago
Donovan got 39/50 on a test, Marci had 10% points higher than Donovan. What was her score?
Vikki [24]

Answer:

marci got 49/50

Step-by-step explanation:

3 0
3 years ago
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Can you write to me explaining this please
Neporo4naja [7]

Answer:

start by makeing your own graph with the line going though the two plotted points and see if the given equation fit you line. the do a commparion as ur explantion.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The center on a target has a diameter of 5 inches. The whole target has a diameter of 25 inches. The center of the target takes
Komok [63]
4%

To find the percentage, first find the area of both circles. The area formula is \pi  r^{2} . After finding the area of the center of the target (19.625) and the area of the large target (490.625), set up a percent proportion to determine the percentage that the center takes up: 

\frac{is}{of} =  \frac{percent}{100}


\frac{19.625}{490.625} =  \frac{percent}{100}


Cross multiplying and dividing by 490.625 will give a total of 4%.



4 0
3 years ago
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