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oksian1 [2.3K]
2 years ago
5

Can someone please help me with the question, a/4 = 15/12 a=?

Mathematics
2 answers:
malfutka [58]2 years ago
7 0

Answer:

a = 5

Step-by-step explanation:

a/4 = 15/12

We can use cross products to solve

a* 12 = 4*15

12a = 60

Divide each side by 12

12a/12 = 60/12

a =5

Bumek [7]2 years ago
4 0

Answer:

a = 5

Step-by-step explanation:

a/4 = 15/12

Cross Multiplying RHS to LHS, we get

12a = 60

a = 60/12

a = 5

hope it helps!

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what is the equation of the line that is parallel to the line y - 2x - 1 and passes through the point (2,7)?
zvonat [6]

Answer:

y= 2x +3

Step-by-step explanation:

5 0
3 years ago
The frame of a bridge is constructed of triangles, as shown below.
Artemon [7]

Answer:

UV = 14 ft and m∠TUV = 45°

ST = 20 ft, UV = 14 ft, and m∠UST = 98°

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A motorboat travels 244 kilometers in 4 hours going upstream and 749 kilometers in 7 hours going downstream. What is the rate of
Kryger [21]

Answer:

Speed of Motorboat = 84 kmph

Speed of Current = 23 kmph

Step-by-step explanation:

Distance Equation is:

D = RT

Where

D is distance

R is rate

T is time

Downstream rate is rate of boat PLUS current

Upstream rate is rate of boat MINUS current

Let rate of boat be "x" and rate of current be "c".

From first statement, we can write:

244 = (x - c)(4)

From second statement, we can write:

749 = (x + c)(7)

The first equation becomes:

244 = 4x - 4c

The second equation becomes:

749 = 7x + 7c

Multiplying first equation by 7 , we have:

7 * [244 = 4x - 4c] = 1708 = 28x - 28c

Multiplying 2nd equation by 4, we have:

4 * [749 = 7x + 7c] = 2996 = 28x + 28c

Now we add up these equations (in bold):

1708 = 28x - 28c

2996 = 28x + 28c

----------------------------

4704 = 56x

x = 4704/56

x = 84

Now using this value and plugging in original equation, we can find "c":

244 = 4x - 4c

244 = 4(84) - 4c

244 = 336 - 4c

4c = 92

c = 92/4

c = 23

<u>Speed of Motorboat = 84 kmph</u>

<u>Speed of Current = 23 kmph</u>

6 0
3 years ago
Solve by elimination<br> 5x+4y = 12<br> 3x - 3y = 18<br><br> Please help solve and provide steps.
SOVA2 [1]
First you solve for y.
5x+ y= 12 so Y= 12-5x
And plug it into the next equation
3x- 3(12-5x) = 18
Distribute
3x-36+15x=18
Add 36 to both sides
3x+ 15x= 54
18x= 54 ... divide
x= 3
And you can plug in x to solve for Y
5(3) + y = 12
15+ y = 12 ...subtract 15 from both sides
y= -3
4 0
3 years ago
Read 2 more answers
Which function represents the price of any computer after a 10% discount? Let x be the original price and P(x) be the discounted
Liono4ka [1.6K]

Answer:

P(x)=.1x

Step-by-step explanation:

1. convert percent value to decimal

10.00/100=.10

2. plug into equation

P(x)=.1x

7 0
3 years ago
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