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bezimeni [28]
3 years ago
11

Help pleaseee really dont know how to start with this​

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0

Answer:

Slope is positive for all x, so always increasing

Step-by-step explanation:

Increasing/decreasing depends on the slope of the function, which is f'

f'(x) = 9x² + 18x + 25

If f'(x) > 0 for all x, then his claim is correct (increasing for all x)

If there's even 1 x-value for which f'(x) is not positive, his claim is incorrect

f'(x) is a quadratic function.

9x² + 18x + 25

9(x² + 2x) + 25

9(x² + 2(x)(1) + 1² - 1²) + 25

9(x + 1)² - 9 + 25

9(x + 1)² + 16

Since the minimum value of f' is 16, it's always positive.

Hence, the claim is correct

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Can someone help.
r-ruslan [8.4K]

Answer:

m∠C = 38°  (nearest whole number).

Step-by-step explanation:

To find the missing angle, use the Sine Rule.

<u>Sine Rule</u> (for angles)

\sf \dfrac{\sin A}{a}=\dfrac{\sin B}{b}=\dfrac{\sin C}{c}

where:

  • A, B and C are the angles
  • a, b and c are the sides opposite the angles

Given:

  • A = 53°
  • a = 18
  • c = 14

To find m∠C, substitute the given values into the formula and solve for C:

\implies \sf \dfrac{\sin 53^{\circ}}{18}=\dfrac{\sin C}{14}

\implies \sf \sin C= \dfrac{14 \sin 53^{\circ}}{18}

\implies \sf C= \sin^{-1} \left( \dfrac{14 \sin 53^{\circ}}{18}\right)

\implies \sf C= 38.40096301...^{\circ}

Therefore, m∠C = 38°  (nearest whole number).

Learn more about the sine rule here:

brainly.com/question/27089170

brainly.com/question/27704834

5 0
2 years ago
Aaron is 5 years younger then Ron. Four years later, Ron will be twice as old as Aaron. Find their present ages.​
Katyanochek1 [597]

Answer:17

Step-by-step explanation:

tommy  was 14 ten years ago 2times old as ron.14/2=7 . so we add the 10 years ron is 17..c;

6 0
3 years ago
Read 2 more answers
Percent of change from 115 to 338
MrRa [10]

Answer:

237 ⁹/23% change

Step-by-step explanation:

115=100%

337-155=273 which represents the increase

115=100

273=?

273×100÷115= 237 ⁹/23%

Answer =237⁹/23%

7 0
3 years ago
PLEASE SOMEONE TO HELP ME WHAT ARE THE CORRECT ANSWERS AND IM GIVING BRAINLY
GrogVix [38]

Answer:

10 times greater

Step-by-step explanation:

When you write these as numbers, you get:

800,000,000 (8 hundred million place)

80,000,000 (8 ten million place)

Then divide the greater number by the less number:

800,000,000/800,000,00

make this easier by eliminating 0's:

80<u>0,000,000</u>/8<u>0,000,000</u>

80/8

10

10 times greater is your answer

Hope this helps!

4 0
3 years ago
Read 2 more answers
2+2x7+(89 x0)+90+50-12 - 20=
aalyn [17]

Answer:

124

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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