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2 years ago

PLEASE HELP I'LL GIVE BRAINLY AND POINTS

Mathematics

1 answer:

erastovalidia [21]2 years ago

4 0

Answer:

i think maybe it is 2*(j-4)

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Solve four square root of six plus eight square root of four and explain whether the answer is rational or irrational.

Inga [223]

Answer:

$4\sqrt{6}+16$

Step-by-step explanation:

Given the expression: $4\sqrt{6}+8\sqrt{4}$

$\sqrt{4}=2\\$Therefore, \\4\sqrt{6}+8\sqrt{4} =4\sqrt{6}+8*2\\ =16+4\sqrt{6}$

We can re-write the answer as:

$4\sqrt{6}+16$

The answer is irrational because the sum of a rational number and irrational number is an irrational number.

<u>The correct option is B.</u>

7 0

3 years ago

If f(x)=x^4+3x^3-x^2+6, find f(-3).

docker41 [41]

Answer:

f(-3) = -3

Step-by-step explanation:

Step 1: f(x) means "f of x" and f(-3) means "f of -3", so you have to replace all the "x" letters in the function with the value -3.

$f(x)=x^4+3x^3-x^2+6\\f(-3)=(-3)^4+3(-3)^3-(-3)^2+6$

Step 2: Apply the exponents. <em>Make sure you remember to put in the -3 and not just 3.</em>

$f(-3)=81+3(-27)-9+6$

Step 3: Use BEDMAS rules to complete the calculation.

$f(-3)=81-81-9+6$

$f(-3)=-3$

Therefore the answer is f(-3) = -3.

4 0

3 years ago

Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 50.7 d

Svet_ta [14]

Answer: The mean of the frequency distribution is 51.7°.

The computed mean 51.7° is greater than the actual mean 50.7° .

Step-by-step explanation:

The given table :

Low Temperature (°F) Frequency Mid -value

Class interval f x fx

40-44 2 42.5 85

45-49 7 47.5 95

50-54 9 52.5 105

55-59 5 57.5 115

60-64 1 62.5 25

$\text{Now, Mean}=\dfrac{\sum fx}{\sum f}\\\\=\dfrac{85+332.5+472.5+287.5+62.5}{24}\\\\=\dfrac{1240}{24}=51.6666666667\approx51.7$

The computed mean 51.7° is greater than the actual mean 50.7° .

5 0

3 years ago

The measures of angles X and Y are the same, x degrees. The measure of angle Z is twice the measure of angle Y.

Ne4ueva [31]

Answer:

If you're trying to find the measurement of angle z then it'd be 2x degrees, since its twice that of angle y, which is x degrees

Step-by-step explanation:

5 0

3 years ago

What is the slope of the form of (1,2) m= -2

Triss [41]

Answer:

m = -2

Step-by-step explanation:

slope is m in y = mx + b

You already said what m is

7 0

2 years ago