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3 years ago

20a+12a-8 simplified

Mathematics

2 answers:

bixtya [17]3 years ago

7 0

That would 32a - 8, Good Luck!

Luden [163]3 years ago

6 0

32a-8....................

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What are the coordinates of the image of Q for a dilation with center (0, 0) and scale factor 1/2?

Amanda [17]

The answer would be D. (2,2)
Since the scale factor is 1/2, all you have to do is multiply 1/2 by each of x-coordinate and y-coordinate of Q.
Multiplying by 1/2 is the same as dividing by 2, so you divide the x and y coordinates of Q to get the dilation image of Q as (2,2).

8 0

3 years ago

As a motorcycle accelerates at 5.1 m/s2, its speed changes from 16 km/h to 118 km/h. How long does this take?

ser-zykov [4K]

Acceleration (a) = 5.1 m/s²
Initial speed (u) = 16 km/h ⇒ $\frac{16*1000}{3600}$ m/s ≈ 4.5m/s
Final speed (v) =118 km/h ⇒ $\frac{118*1000}{3600}$ m/s ≈ 32.8m/s

Distance(S) travel in that particular instant is carried out by 'Third equation of motion' i.e., v² = u² + 2aS

So, When all quantities are in S.I. unit then,
putting the values in the equation of motion,

As we have to carry out the distance covered,
2·a·S = v² - u²
S = $\frac{ v^{2} - u^{2} }{2a}$
Putting values in derived equation,
⇒ S = $\frac{ (32.8)^{2} - (4.5)^{2} }{2*(5.1)}$
⇒ S = $\frac{ 1075.84 - 20.25}{10.2}$
⇒ S = $\frac{1055.59}{10.2}$
⇒ S ≈ 103.489 m

The total distance covered in that given condition is approx. 103.289 m.

8 0

3 years ago

Read 2 more answers

451 mi + 7.2 hr = ___ ___ (Round to the appropriate number of significant digits.)

gladu [14]

Answer:

Step 1: Enter the number in the respective input field

Step 2: Now click the button “Solve” to get the answer

Step 3: Finally, the significant figures of the number will be displayed in the output field

What is Meant by Significant Figures?

In Mathematics, the significant figures define the number of important single digits that contribute to the degree of accuracy of the given number. The five important rules for the significant figures are as follows:

All the non zero numbers are significant figures

The zero present in between the non zero numbers are significant figures

The leading zeros are not significant

The trailing zeros present at the right side of the decimal point are significant figures

Trailing zeros of the number without a decimal point are not significant figures

The trailing zeros present in the whole number with the decimal point are significant figures

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8 0

2 years ago

What the answer is I don't get it

NISA [10]

The answer is 1/2 because 1 = 2/2 3/2 minus 2/2 = 1/2

6 0

3 years ago

Read 2 more answers

Aviation:

kolezko [41]

Change in altitude:

42,000 - 18,000 = 24,000 feet

Rate of change = 24,000 feet / 12 minutes = 2,000 feet per minute

Because the plane was going down, the rate of change would be negative.

The rate would be -2,000 feet per minute.

8 0

2 years ago