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pogonyaev
2 years ago
8

What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?

Mathematics
2 answers:
erik [133]2 years ago
5 0

Answer:

40

Step-by-step explanation:

5 times 3 is 15

15 times 2 is 30

4 times 2.5 is 10

30 plus 10 equals 40

LUCKY_DIMON [66]2 years ago
4 0

Answer:

it is 55 the 2nd one

5(9)+10=55

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Translate to algebra; the quotient of a number less than ten and the number less two<br>​
Alja [10]

Answer:

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5 0
2 years ago
To convert 180 seconds to minutes, which proportin should you use?
FinnZ [79.3K]
The proportion would be 180/x=60/x
5 0
3 years ago
F(t) = t^2 - 5t; Find f(-8)
yKpoI14uk [10]

Answer:

f(-8) = 104

Step-by-step explanation:

f(t) = t^2 - 5t

Let t=-8

f(-8) = (-8)^2  -5(-8)

       = 64 +40

       = 104

7 0
3 years ago
Read 2 more answers
Please help! thanks.
Leno4ka [110]
4) Around 1.4

6) Around 5.7

8) Around 4.5

10) Around 9.5
3 0
3 years ago
This composite shape is a rectangle with a semicircle attached on one end. The diameter of the semicircle is 6 feet.What is the
Olin [163]
We know that
area of the composite figure=area of the rectangle+area of semicircle

area of rectangle=b*h
b=10 ft
h=6 ft
area rectangle=10*6----> 60 ft²

area of semicircle=pi*r²/2
r=6/2----> 3 ft
area of semicircle=pi*3²/2-----> 14.13 ft²

area of the composite figure=[60+14.13]-----> 74.13 ft²-----> 74 ft²

the answer is
74 ft²

8 0
3 years ago
Read 2 more answers
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