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4 years ago

I need help please?!!!!!!

Mathematics

1 answer:

Vadim26 [7]4 years ago

3 0

Answer:

simplified is

x ^5 y ^15 z ^10

Step-by-step explanation:

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Heather left the hospital and drove toward the desert at an average speed of 35 km/h. Danielle left sometime later driving in th

elena55 [62]

Answer:

Danielle drove 3 hours

Step-by-step explanation:

Suppose Heather moved in the x direction.

Then Danielle moved in the opposite direction, that is, she moved in the -x direction.

Let's call $V_1$ , $x_1$ , $t_1$ at the speed, distance and time that I code Heather

Let's call $V_2$ , $x_2$ , $t_2$ at the speed, distance and time Danielle codes.

Observe the following diagram:

(x) Heather <------ $x_1$ --------- hospital ---------- $x_2$ -----------> Danielle (-x)

So:

$V_1 = 35\ km/h$

$t_1 = 4\ h$

$V_2 = 50\ km/h$

We know that after 4 hours the distance between Heather and Danielle was 290 km.

That is to say:

$x_2 + x_1 = 290\ km/h$

We know that $x_1= v_1t_1$

$x_1 = 35(4)$

$x_1 = 140\ km$

We already know $x_1$ , the distance from the hospital to Heather, so we can find $x_2$ and thus know $t_2$

So:

$x_2 = 290 - 140\\\\x_2 = 150\ km$

Then:

$t_2 = \frac{x_2}{v_2}\\\\t_2 = \frac{150}{50}\\\\t_2 = 3\ h$

7 0

3 years ago

Which of the following statements is true about the IQR, range, and standard deviation? A - The IQR is the least resistant to ex

Lemur [1.5K]

Answer:

Step-by-step explanation:

I took quiz

6 0

4 years ago

How to determine AB ?

Zanzabum

Multiply 30 and 6? i don't really know

6 0

3 years ago

Read 2 more answers

HELP!!! I NEED HELP!!!!!!

Oliga [24]

Answer:

0.0365 pounds per dollar

$2.79 per pound

$2.79 per pound is typically used

Step-by-step explanation:

13.95/5 = $2.79 per pound

5/13.95 = 0.0365 pounds per dollar

7 0

3 years ago

A ternary digit is either 0, 1, or 2. How many sequences of 6 ternary digits containing a single 1 and a single 2 are there?

hram777 [196]

Answer:

30sequences

Step-by-step explanation:

Using nx (n-1)

And

n is the number of ternary digits in the number.

So For 6 digits n is 6 so the number of numbers that have exactly one 1 AND exactly one 2 is 30.

That is 6(6-1)= 30

7 0

3 years ago