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3 years ago

Three students were given the expression shown and were asked to take a common factor out of two of the terms.

Mathematics

1 answer:

vagabundo [1.1K]3 years ago

4 0

Answer:

Step-by-step explanation:

Expression given → 4 - 9x + 21

Chang's expression → 4 - 3(3x + 7)

Chang's expression is incorrect because the correct expression is [4 - 3(3x - 7)]

Benjamin's expression → 4 + 3(3x + 7)

Benjamin's expression is incorrect because the correct expression is [4 - 3(3x - 7)]

Habib's expression → 4 + 12x

Habib's expression is incorrect because the correct expression is [4 - 3(3x - 7)]

Correct expression → [4 - 3(3x - 7)]

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I am so confused on what to do with fractions.

Arada [10]

Using the power rule for differentiation, the first derivative of

$f(x) = -x^{\frac12}$

$f'(x) = -\dfrac12 \cdot x^{\frac12-1} = -\dfrac12 x^{-\frac12}$

and the second derivative is

$f''(x) = -\dfrac12 \cdot \left(-\dfrac12 \cdot x^{-\frac12 - 1}\right) = \dfrac14 x^{-\frac32}$

which makes E the correct choice.

6 0

3 years ago

Can someone help me please

kakasveta [241]

Answer:

12.32

Step-by-step explanation:

So by using y1 +y2/x1+x2 we can find the ratio.

the y1 will be 4 and y2 will be 13.

the x1 will be 5 and x2 will be 6

this is equivilent to 17/11 (4+13/5+6)

17/11 =1.54545454... we can simplify to 1.54

8*1.54=12.32

this might be wrong I haven't done this math in years

3 0

3 years ago

Read 2 more answers

Which equation is equivalent to 5= 4/3 (6y +9)?

vekshin1

Answer:

option C

Step-by-step explanation:

$5 = \frac{4}{3}(6y + 9)\\\\5 = \frac{4\times6y}{3} +\frac{4 \times 9}{3}\\\\5= 8y + 12$

8 0

3 years ago

Find the missing angle. Round your answer to the nearest degree.

Marta_Voda [28]

Answer:

53.52°

Step-by-step explanation:

cos x° = 22/37 = 0.59456

x = 53.52°

8 0

3 years ago

HELP PLEASE ALSO SHOW YOUR WORK SO I CAN UNDERSTAND IT!!!!!!! ASAP ASAP

Hatshy [7]

4. $\sqrt{1625}$
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5 0

4 years ago