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PIT_PIT [208]
3 years ago
5

A first number plus twice a second number is 13. Twice the first number plus the second totals 14. find the numbers​

Mathematics
1 answer:
sashaice [31]3 years ago
4 0

Answer:

the first number is 5 the second number is 4

Step-by-step explanation:

first number = x

second number = y

X+2y=13 given this isolate x  x = 13-2y

2x+y=14 substitute 13-2y for x

2(13-2y)+y=14

26-4y+y=14

-3y=-12

y=4 taking this number substitute into either equation above

x+2(4)=13

x+8=13

x=5

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How do I solve this ​
Oxana [17]

9514 1404 393

Answer:

  h ≈ 448.0 m

Step-by-step explanation:

The relevant trig function is the one that relates adjacent side length, opposite side length, and angle:

  Tan = Opposite/Adjacent

Solving for the adjacent side length, we get ...

  Adjacent = Opposite/Tan

For the two angles given, we want the value of the difference of the adjacent side lengths:

  168 m = h/tan(41.2°) -h/tan(52.5°)

Then h is found by dividing by its coefficient:

  h = (168 m)/(1/tan(41.2°) -1/tan(52.5°))

  h ≈ 448.0 m

5 0
3 years ago
Robert has a container in the shape of a cube with an edge length of 6.1 cm. What is the volume of the container? Enter your ans
8090 [49]

Since it's a cube all the side lengths are the same. So the calculation would be 6.1x6.1x6.1 or 6.1^3
V=226.981cm^3
V=Length x width x heigh
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7 0
3 years ago
Mathmerica Bank offers 2.1% interest compounded yearly
Scilla [17]

Answer:

Total = 2,500 (1.021)^t

Step-by-step explanation:

There is no question but the formula for compound interest is

Total = amount (1 + rate)^time

Total = 2,500 (1.021)^t

6 0
3 years ago
Instructions: Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
GuDViN [60]

Answer:

A) 6

B)5

C)4

D)3

E)1.76

F)1.52

G)1.5

H)1.4

I)1/6

J)2/3

props to the first guy that said it

6 0
3 years ago
Read 2 more answers
A car's velocity changes at a rate of 36 miles per hour in 0.5 hour.
kotegsom [21]

Answer:

72

Step-by-step explanation:

In order to find the acceleration we need first to defined it, so:

acceleration=((final velocity)-(initial velocity))/time interval

a=(vf-vi)/dt

But (vf-vi) actually represents the velocity change, so (vf-vi)/dt represents the velocity change rate. This means that in our case:

a=(36miles/hour)/(0.5hours)

a=72miles/hour^2

In conclusion the acceleration is a=72miles/hour^2, without units just 72.

7 0
4 years ago
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