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AveGali [126]
3 years ago
12

What number needs to be added to 5 and 3 so that the ratio of the first number to the second becomes 3:2?

Mathematics
2 answers:
sukhopar [10]3 years ago
7 0

Answer:

7

Step-by-step explanation:

x + 3 : x + 8 : : 2 : 3

(x + 3) \times 3 = (x + 8) \times 2 \\ 3x + 9 = 2x + 16 \\ 3x - 2x = 16 - 9 \\ x = 7 \\ x + 3 = 7 + 3 = 10 \\ x + 8 = 7 + 8 = 15 \\  

10 : 15

2 : 3

katen-ka-za [31]3 years ago
5 0

Answer:

+1 #

=5+1:3+1

=6:4

=3:2 #

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If the simple interest on ​$1000 for 7 years is ​$560​, then what is the interest​ rate
levacccp [35]

Answer:

8%

Step-by-step explanation:

560 interest/7 years=80 interest per year

1000xinterest rate=80

interest rate = 80/1000

Interest rate is 8%

4 0
3 years ago
Eight years ago, twice Manuel's age was 36. What is Manuel's age now? Pls hell
laila [671]

Answer:

Hey there!

Eight years ago, Manuel's age was 36/2, or 18.

Now, his age is 18+8, or 26 years old.

So, he is 26 years old now.

Hope this helps :)

8 0
3 years ago
If<br>A = i +3j -2K and B=4i-2j+4k<br>Find (2A+B).(A-2B)​
Marizza181 [45]

GIVEN :

a = 1/√10 ( 3i + k) and

b = 1/7 ( 2i + 3j - 6k)

TO FIND :

( 2a- b) . [ ( a x b ) x ( a + 2b)]

SOLUTION :

◆Going with the equation given,

( 2a - b) . [ ( a x b ) x ( a + 2b)]

= (2a - b) [( a×b×a) + 2(a×b)×b]

◆BAC - CAB RULE,

A×B×C = B( A.B ) - C(A.B )

= (2a- b ) [ (b (a.a ) - a (a.b ) + 2b ( a.b) -2b (a.b]

Solving further

= (2a - b )(b - 2a)

= -4a.a -b.b

=-5.

Answer:

( 2 - b) . [ ( a x b ) x ( a + 2b)] = -5

Hoped I helped

8 0
3 years ago
Stacy goes to the county fair with her friends . The total cost of ride tickets is given by the equation c=3.5t , where c is the
madreJ [45]

Answer:

<h2><u>$52.5</u></h2>

Step-by-step explanation:

Step one:

given data

we are given that the linear function for the cost is  c=3.5t

c is the cost and

t is the number of tickets.

We are told that t=15, to find c, let us put the value of t in the linear function for the cost

c=3.5(15)\\\\c=52.5

<u>This shows that 15 tickets will cost $52.5</u>

<u />

3 0
3 years ago
PLZZZZZZZZZZZZZZZZZ HELP!
zheka24 [161]

Answer:

-8

Step-by-step explanation:

5(x+12)=  20

5x+60= 20  

5x= -40

x= -8

3 0
3 years ago
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