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ycow [4]
3 years ago
12

What is the missing term to make these ratios equal 21 : 3 = :9

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
7 0

Answer:

63:9 is equal to 21:3

Step-by-step explanation:

Zielflug [23.3K]3 years ago
4 0
63. The ratio 63:9 is equal to 21:3 because 3x3 is 9 and 21x3 is 63
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Let f(x) = (x − 3)−2. Find all values of c in (1, 7) such that f(7) − f(1) = f '(c)(7 − 1). (Enter your answers as a comma-separ
Sidana [21]

Answer:

This contradicts the Mean Value Theorem since there exists a c on (1, 7) such that f '(c) = f(7) − f(1) (7 − 1) , but f is not continuous at x = 3

Step-by-step explanation:

The given function is

f(x)=(x-3)^{-2}

When we differentiate this function with respect to x, we get;

f'(x)=-\frac{2}{(x-3)^3}

We want to find all values of c in (1,7) such that f(7) − f(1) = f '(c)(7 − 1)

This implies that;

0.06-0.25=-\frac{2}{(c-3)^3} (6)

-0.19=-\frac{12}{(c-3)^3}

(c-3)^3=\frac{-12}{-0.19}

(c-3)^3=63.15789

c-3=\sqrt[3]{63.15789}

c=3+\sqrt[3]{63.15789}

c=6.98

If this function satisfies the Mean Value Theorem, then f must be continuous on  [1,7] and differentiable on (1,7).

But f is not continuous at x=3, hence this hypothesis of the Mean Value Theorem is contradicted.

 

3 0
3 years ago
Pls answer this for brainly
zimovet [89]

Answer:

54

Step-by-step explanation:

x-1=3

2xy=24

3+24=27

27·2=54

4 0
3 years ago
Read 2 more answers
The length of a side of an equilateral triangle is 40cm. what is the length of the altitude of the triangle?
podryga [215]

Answer:

20√3 cm

Step-by-step explanation:

Altitude of an equilateral triangle splits it into 2 equal right triangles, it bisects the base and the angle opposite to the base.

<u>Let the altitude be x. Then as per Pythagorean theorem:</u>

  • x² = 40² - (40/2)²
  • x²= 1600 -400
  • x²= 1200
  • x= √1200
  • x= 20√3 cm

<u>Correct choice is</u> the second one

4 0
3 years ago
A train travels between two stations A anf B at a distance of 108 km in 45 minutes
frosja888 [35]
It travels 45 minutes to stations A and B duhh
8 0
3 years ago
Kerri has a germen shepherd that has a mass of 30,000 grams. how many kilograms is 30,000 grams
wolverine [178]
Answer: 30 kilograms

explanation: Each 1000 grams converts to 1 kilogram
8 0
2 years ago
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