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3 years ago

If it takes 6 hr. for a 2,400 mi. flight from Philadelphia to Los Angeles, what is the average speed of the plane?

1 answer:

4 0

To find Average speed, you need to divide the overall time by the overall distance traveled. The equation used to solve this problem is 2,400 mi/ 6 hrs. The Average Speed would be 400 mi/ hr.

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Using your equation from #2, how many hours did the plumber work at your home? Solve the equation from #2

jek_recluse [69]

Answer:

the answer i got was 3 which would be none of the above bc i minused 40 on both sides to get 150 then i divided 150/50 which got me 3.

Step-by-step explanation:

:) your welcome

3 0

3 years ago

Read 2 more answers

Seismologists use the Richter scale to express the energy, or magnitude, of an earthquake. The Richter magnitude of an earthquak

vovikov84 [41]

Answer:

10¹⁸ ergs

Step-by-step explanation:

From the question,

Using the expression

M = $\frac{4}{5}$ log(E/10¹³)................. Equation 1

Where M = Richter magnitude of earth quake, E = Energy released in ergs.

Given: M = 4.0

Substitute into equation 1 amd solve for E

4 = $\frac{4}{5}$ log(E/10¹³)

Log(E/10¹³) = (4×5)/4

Log(E/10¹³) = 5

E/10¹³ = 10⁵

E = 10⁵×10¹³

E = 10⁵⁺¹³

E = 10¹⁸ ergs

6 0

3 years ago

If two triangles satisfy the SAS criteria, describe the rigid motion(s) that would map one onto the other in the following cases

liberstina [14]

Answer:

Reflection, rotation

Step-by-step explanation:

SAS congruency criteria:

2 sides of both triangles are equal

the angle between these two sides of both triangles are equal

Then, if the two triangles share a single common vertex and satisfy the SAS criteria, both reflection or rotation would map one onto the other .

4 0

3 years ago

X^4-256=0 numbers of rational roots

zhuklara [117]

Answer:

x = 8 or x = -8

Step-by-step explanation:

x^4 - 256 = 0

<=>x^4 - 4^4 = 0

<=>(x - 8)(x + 8)(x^2 + 64) = 0

Case 1 :

x - 8 = 0

<=>x = 8 (choose)

Case 2:

x + 8 = 0

<=>x = -8 (choose)

Case 3:

x^2 + 64 = 0

<=>x^2 = -64 (nonsense)

so x = 8 or x = -8

Done :))

7 0

3 years ago

Suppose the line y = 2.8333x - 22.4967 describes the relation between the club-head speed (in miles per hour), x and the dist

schepotkina [342]

Answer:

c) The golf ball will travel 260.8 yards.

d) Hence the residual is 4.2 yards.

Step-by-step explanation:

c) y' = 2.8333x - 22.4967

Now the golf ball will travel $= 2.8333\times100 - 22.4967$ = 260.8 yards

here y'= 260.8 yards.

d) The residual is : y - y' = 265 - 260.8 = 4.2 yards.

6 0

3 years ago

Read 2 more answers