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N76 [4]
3 years ago
12

Two buses are moving towards each other, one at a speed of 40 mph and the other at a speed of 50 mph. How much closer to each ot

her will they be in one hour? In two hours? In three hours?
Mathematics
2 answers:
lara31 [8.8K]3 years ago
8 0
What is the starting distance
gtnhenbr [62]3 years ago
8 0
They will be closer by ten hours in the first hour, but it'll get farther by ten as hours pass by, if you need a specific answer for this, you'll need a starting distance and an arrival place and specifically a time when the trains arrive in its destination. This problem lacks details.
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Choose the abbreviation of the postulate or theorem that supports the conclusion that the triangles are congruent.
Ber [7]

Answer:

Option D.

LA Theorem or Postulates

Explanation:

LA theorem or postulates is leg-acute states that if the leg and an acute angle of one right triangle are congruent to the corresponding leg and acute angle of another right triangle, then the triangles are congruent.

In \triangle ACB and  \triangle DFC

\angle C =\angle F = 90^{\circ}             [Given]

\angle B = \angle E   [Acute angle]      [Given]

BC=EF        [Given]

By LA theorems or postulates,

\triangle ACB \cong \triangle DFE

Therefore, LA theorems or postulates support the conclusion that the triangles are congruent.


     

8 0
3 years ago
Read 2 more answers
Sharon has some one-dollar bills and some five-dollar bills. She has 14 bills. The value of the bills is $30. Solve a system of
Scorpion4ik [409]

Answer:

10 one-dollar  and 4 five-dollar bills.

Step-by-step explanation:

Let x = the number of one-dollar bills and y = number of five-dollar bills.

Then:

x + y = 14

x + 5y = 30      (using the values of the bills)

Subtracting the 2 equations:-

-4y = -16

y = 4

so x + 4 = 14

x = 10.

There are 10  one-dollar bills and 4  five-dollar bills.

8 0
3 years ago
Dora wants to paint the walls, ceiling and floor of her playhouse. The dimensions of the playhouse are 3 m long by 4 m wide by 5
kotegsom [21]

Answer:

Dora has to paint a total ol 60m

Step-by-step explanation:

4x5x3

4x5= 20

20x3=60

6 0
3 years ago
Lines m and p are perpendicular. if the slope of line m is -3 what is the slope of line p
ivann1987 [24]
For two lines to be perpendicular, their slopes must be negative reciprocals of one another, mathematically:

m1*m2=-1, in this case our reference line has a slope of -3 so:

-3m=-1  divide both sides by -3

m=-1/-3

m=1/3

So the perpendicular line will have a slope of 1/3
4 0
3 years ago
Find x round your answer to the nearest integer.
daser333 [38]

Answer:

C

Step-by-step explanation:

Note that <em>x</em> is opposite to the given angle and we are also given the hypotenuse.

Since we have an angle and the side opposite to it and the hypotenuse, we can use the sine ratio. Recall that:

\displaystyle \sin \theta =\frac{\text{opposite}}{\text{hypotenuse}}

The opposite side is <em>x</em>, the hypotenuse is 15, and the angle is 53. Substitute:

\displaystyle \sin 53^\circ = \frac{x}{15}

Solve for <em>x: </em>

<em />x=15\sin 53^\circ<em />

Use a calculator (make sure you're in Degrees Mode!). Hence:

x=11.9795...\approx 12

Our answer is C.

4 0
3 years ago
Read 2 more answers
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