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3 years ago

8

A runner crossed the finish line at the time shown on the clock. The runners time was 2 hours and 45 minutes. What time did the

race begin?

1 answer:

dsp733 years ago

7 0

Answer:

The race began at 12.

Step-by-step explanation:

He finish at 2 hours and 45 minutes. If you go back 2 hours and 45 minutes from the clock it is 12.

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A travel trailer is bought at the price of $35,000. The price decreases at the rate of .25 every year (t). The exponential expre

Debora [2.8K]

Answer:

$ 8300 (Approximately)

Step-by-step explanation:

Given:

Initial price of the trailer is, $P_0=\$35000$

Rate of decrease per year is, $r=0.25$

The time in years is, $t=5$

The exponential expression for the decrease in price after 't' years is given as:

$P=P_0(1-r)^t$

Plug in all the given values and solve for 'P'. This gives,

$P=35000(1-0.25)^5\\P=35000(0.75)^5\\P=35000(0.2373)\\P=\$8305.5\approx \$8300$

Rounding it to the nearest whole number, the price of the travel trailer after 5 years is $ 8,300.

3 0

3 years ago

Zoe is a chemistry teacher earning a salary of $38,000 per year. She also tutors part-time, charging $20 per session. Which of t

rjkz [21]

Earned Income because she is working full time, but also adds the extra 20$ for when she tutors in her free time<span />

8 0

3 years ago

Read 2 more answers

Which description explains how the graph of f(x)=√x could be transformed to form the graph of g(x) = √x-6

yawa3891 [41]

Answer:

b

c

Step-by-step explanation:

First question: x - 6 means there is a shift to the right.

Second Question: substitute the given values into the original equation for appropriate transformations.

Answer: 3 |x-4| + 2, because vertical stretch multiplies x, horizontal shifts are subtracted or added to x, and vertical shifts are added or subtracted to the entire function.

4 0

3 years ago

Perform the multiplication, (7x2+a2)(x2–3a2)

aksik [14]

Answer:

The given multiplied expression is

$(7x^2+a^2)(x^2-3a^2)=7x^4-20x^2a^2-3a^4$

Step-by-step explanation:

Given expression is $(7x^2+a^2)(x^2-3a^2)$

To find the multiplication of the given expression :

$(7x^2+a^2)(x^2-3a^2)$

By using the distributive property to solve the given expression as below

$(7x^2+a^2)(x^2-3a^2)=(7x^2)(x^2)+(7x^2)(-3a^2)+(a^2)(x^2)+(a^2)(-3a^2)$

$=7x^2.x^2-21x^2a^2+a^2x^2-3a^2.a^2$

$=7x^{2+2}-21x^2a^2+a^2x^2-3a^{2+2}$ ( by using the property $a^m.a^n=a^{m+n}$ )

$=7x^4-21x^2a^2+a^2x^2-3a^4$

Adding the like terms in the above expression we get

$=7x^4-20x^2a^2-3a^4$

Therefore $(7x^2+a^2)(x^2-3a^2)=7x^4-20x^2a^2-3a^4$

Therefore the given multiplied expression is

$(7x^2+a^2)(x^2-3a^2)=7x^4-20x^2a^2-3a^4$

8 0

3 years ago

Helppppopleaseee????

rosijanka [135]

Answer:

LQ = 5

Median = 6

Step-by-step explanation:

$\frac{n+1}{2}$ gives us 5.5, so we do the average of position 5 and 6. This gives us 6, so the median is 6.

Now we find the median of the bottom half of the numbers, which is 5, so the LQ is 5.

Now we find the median of the upper half of the numbers, which is 7, so the UQ is 7.

7 0

2 years ago