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3 years ago

11

Damon drove 120 miles in 2 hours and Ashley drove 135 miles in 2.3 hours Ashley insists that she was traveling at a faster rate

than Damon Is she accurate?

1 answer:

Svetlanka [38]3 years ago

6 0

Ashley is incorrect, they’re traveling at the same rate. hope this helped

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Someone plz help me :(

saul85 [17]

the answer is A

hope this helps

4 0

2 years ago

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There are 1,920 fences posts used in a 12- kilometer stretch of fences How many fences posts are used in 1 kilometer of fence

Nastasia [14]

1920÷12= 160

Step-by-step explanation:

1920÷12= 160

4 0

3 years ago

X^6 * x^-4<br><br> EXPONENTS QUIZ <br> ( YOU CANT GET A FRACTION OR A DESMIL!)

Varvara68 [4.7K]

Answer:

The answer is x².

Step-by-step explanation:

1) Use product rule: x^a x^b = x^a + b.

${x}^{6 - 4}$

2) Simplify 6 - 4 to 2.

${x}^{2}$

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>x</u><u>²</u>

6 0

3 years ago

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A ladder reaches the top of a 20 foot building. the ladder is 4.5 feet away from the building. how long is the ladder?

KATRIN_1 [288]

Answer:

C

Step-by-step explanation:

do that with pithagoras:

20² + 4,5² = x²

400 + 20,25 = x²

420,25 = x²

x = $\sqrt{420,25}$

x ~ 20,5

Letter C: 20,5 feet

4 0

3 years ago

Question 16 (Essay Worth 7 points)<br><br> Verify the identity.<br><br> tan (x + π/2) = -cot x

Rus_ich [418]

Step-by-step explanation:

We know that tan=sin/cos, so tan(x+π/2)=

$\frac{sin(x+pi/2)}{cos(x+pi/2)}$

Then, we know that sin(u+v)=sin(u)cos(v)+cos(u)sin(v),

so our equation is then

$\frac{sin(x)cos(\pi/2)+cos(x)sin(\pi/2)}{cos(x+\pi/2)} = \frac{cos(x)}{cos(x+\pi/2) }$

Then, cos(u+v)=cos(u)cos(v)-sin(u)sin(v), so our expression is then

$\frac{cos(x)}{cos(x)cos(\pi/2)-sin(x)sin(\pi/2)} = \frac{cos(x)}{-sin(x)} = -cot(x)$

6 0

3 years ago