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3 years ago

Mrs. Simpson drove 105 miles in 2 1/2 hours. What was Mrs. Simpson's average speed in miles per hour?

2 answers:

5 0

105 m = 2.5 h

x miles = 1 hour

You cross multiply since it's a proportion:
2.5 * x
105 * 1

=

2.5x = 105

Then you divide everything by 2.5

The answer is 42

PilotLPTM [1.2K]3 years ago

5 0

The answer is 42.You get this when you divide 105 by 2 1/2

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The answer is 4 right??

Step2247 [10]

Yes, you are correct. The answer to your problem is indeed 4.

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2 years ago

Plot the line for the equation on thr graph. y-2=-2(x+4)

julia-pushkina [17]

Answer:

see attached

Step-by-step explanation:

y-2=-2(x+4)

y -2 = x(-2) + 4(-2)

y -2 = -2x - 8

y = -2x - 8 + 2

y = -2x - 6

When x = 0, y = -6. Hence (0,-6) is a point on the line

when y = 0, x = -3. Hence (-3,0) is a point on the line.

Plot these 2 points and connect with a line (see attached)

6 0

2 years ago

Please help asap! really important!!

Alexxandr [17]

Answer:

4th graph

6th graph

3rd graph

Step-by-step explanation:

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it is 4th graph

when you substitute x = 0 y is 3

and when y = 0 x is -3

Quadratic = y = 3x^2

It is 6th graph

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Exponential = y = 3^x

it is 3rd graph

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for positive values of x, y is exponentially rising

for negative values of x it is nearly almost touches zero

6 0

2 years ago

There are 86400 frames of animation in 1 hour of anime. How many frames are there per second?

a_sh-v [17]

Answer:

1400

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Ba%5E2%20-2a-b%5E2%3D0%7D%20%5Catop%20%7B2b%2B2ab%3D0%7D%7D%20%5Cright

oksian1 [2.3K]

Given :-

a² - 2a - b² = 0
2b + 2ab = 0

To find :-

Value of a and b .

Solution :-

Taking second equation:-

2b + 2ab = 0
2b ( 1 + a ) = 0
2b = 0 or (1+a) = 0
b = 0 , a = -1

Substitute in first equation :-

a² - 2a - b² = 0

When b = 0 ,

a² - 2a - 0² = 0
a² - a = 0
a( a -1) =0
a = 0 , 1

When a = -1 ,

(-1)² - 2*(-1) - b² = 0
1 + 2 - b² = 0
b² = 3
b = ±√3

Answer :-

a = 0,1 ; b = 0
a = -1 , b = ±√3

8 0

2 years ago