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aniked [119]
3 years ago
9

Lois has 10 coins in quarters and dimes in their pocket. After counting, the total value is $1.45. How many of each coin did Loi

s have?

Mathematics
1 answer:
umka21 [38]3 years ago
5 0
I have no idea sorry brainly is making me answer questions here’s a picture of my dog

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One side of a triangle is 3 inches and its area is 36 inches. The corresponding side of
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its lonmg.answer

Step-by-step explanation:

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3 years ago
Two airplanes are flying in the air at the same height: airplane A is flying east at 250 mi/h and airplane B is flying north at
just olya [345]

Answer:

  decreasing at 390 miles per hour

Step-by-step explanation:

Airplane A's distance in miles to the airport can be written as ...

  a = 30 -250t . . . . . where t is in hours

Likewise, airplane B's distance to the airport can be written as ...

  b = 40 -300t

The distance (d) between the airplanes can be found using the Pythagorean theorem:

  d^2 = a^2 + b^2

Differentiating with respect to time, we have ...

  2d·d' = 2a·a' +2b·b'

  d' = (a·a' +b·b')/d

__

To find a numerical value of this, we need to find the values of its variables at t=0.

  a = 30 -250·0 = 30

  a' = -250

  b = 40 -300·0 = 40

  b' = -300

  d = √(a²+b²) = √(900+1600) = 50

Then ...

  d' = (30(-250) +40(-300))/50 = -19500/50 = -390

The distance between the airplanes is decreasing at 390 miles per hour.

3 0
3 years ago
Hey, can someone solve this for me? <br><br> 5(x+1)= 4(x-1)+x
Travka [436]
<span>5(x+1)= 4(x-1)+x
5x + 5 = 4x - 4 + x
5x +5 = 5x -4
5 </span>≠<span> -4
x </span>∈ ∅
3 0
3 years ago
What is the product?
Lerok [7]
You just have to multiply straight across. Multiply the numerators for the new numerator, and the denominators for the new denominator.
5*3=15
4*8=32
15/32 is the answer (b).
5 0
3 years ago
Read 2 more answers
In the expression 2a-5+4a-9, name the constants​
Vika [28.1K]

Answer:

-5 and -9 are the constants, can also be written -14

4 0
3 years ago
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