Thank you to whoever helps me. I'm confused a little bit.

A delivery truck has 40,000 miles on its odometer and travels an average of 22,000 miles per year.

Arturiano [62]

Answer:

Since the truck adds 22,000 PER YEAR, this would be the number we multiply by the variable depending on how many years they are calculating for. So we have y = 22,000x

The truck already has 40,000 miles on it so it s STARTING at 40,000, this is our y-intercept, or b.

Now we have y = 22,000x + 40,000

6 0

2 years ago

The half-life of the radioactive element unobtanium-43 is 10 seconds. If 48 grams of unobtanium-43 are initially present, how ma

natka813 [3]

Answer:

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

Step-by-step explanation:

Given;

initial mass of the radioactive element = 48 grams

half life, t = 10 seconds

time of decay (s) remaining mass of the radioactive element

0 ------------------------------------------------- 48 grams

10------------------------------------------------- 24 grams

20 ------------------------------------------------- 12 grams

30 -------------------------------------------------- 6 grams

40 --------------------------------------------------- 3 grams

50 ----------------------------------------------------- 1.5 grams

60------------------------------------------------------0.75 grams

Thus;

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

7 0

3 years ago

PLZ HELP!! ILL GIVE BRAINLIESTT

Nadya [2.5K]

Answer:i am not sure about this

Given Statement:

Angela is very tired after working outside all day.

Conditional Statement:

If she was working outside all day, then angela is very tired.

Converse Statement:

If angela is very tired, then she was working outside all day.

Inverse Statement:

If angela did not work outside all day then she will not be tired

Contrapositive Statement:

If angela is not tired then she did not work outside all day

Biconditional Statement:

Angela is very tired if and only if she worked outside all day

Step-by-step explanation:

6 0

3 years ago

A boat is traveling at an average speed of 15 meters per second. How many kilometers per second is the boat traveling

damaskus [11]

$15 \frac{m}{s} \to 15\frac{10^{-3} km}{s} \to\boxed{0.015 \frac{km}{s}}$

8 0

3 years ago

Read 2 more answers

Selected value of each decimel number when it is rounded to the nearest whole number

PtichkaEL [24]

Answer:

5
6
6
5

Remember the decimal <em>hundredths</em> rounding ruleset.

If a decimal is below .50, round down.
If a decimal is .50, round up.
If a decimal is above .50, round up.

View this array below to get a better image.

$\left[\begin{array}{ccc}0.49(down)&0.50(up)&0.51(up)\end{array}\right]$

So, for example, if you had 6.51, you would round that up to 7, and if you had 8.47, you would round that to 8

6 0

1 year ago