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Helga [31]
2 years ago
7

Jonathan collects postcards and stamps. The number of postcards in his collection is 12 more than 3/4 the number of stamps. He h

as 39 postcards in all. If Jonathan has x stamps, which equation represents this situation and how many stamps does he have?
Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
7 0

Answer:

12 +  \frac{3}{4} x = 39

\frac{3}{4} x = 27

x = 36

Jonathan has 36 stamps.

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Which function is shown in the graph?
Ad libitum [116K]

Answer:

k(x)=-3/4x+5

Step-by-step explanation:

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
Please help i need this
Svet_ta [14]

Slope Formula - (y² - y¹) / (x² - x¹)

(1, 7)

x¹ = 1

y¹ = 7

(-4, -8)

x² = -4

y² = -8

-8 - 7 = -15

-4 - 1 = -5

Simplify - -15/-5

-15/5 = -3

Your answer is -3.

Hope this Helps!!


5 0
3 years ago
If 1 yard = 3 feet and 1 mile = 5,280 feet, how many yards are there in 1miles?
slavikrds [6]

1 yard = 3 feet

1 mile = 5,280 feet

So, 1 mile = 5,280/3 yards = 1760 yards

8 0
3 years ago
Can anyone help me plz?
RUDIKE [14]

Answer:

The answer is 37

Step-by-step explanation:

8x8=64

9x3=27

64-27=37

8 0
2 years ago
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