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Svetradugi [14.3K]
3 years ago
7

If x=3y substitute the value of x into expression simplify 3x+6

Mathematics
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

(3y)3+6

Step-by-step explanation:

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1. The sum of two numbers is 90. Their difference is 18. Find the numbers. A(40, 22) B(45, 45) C(36, 54) D(27, 63) E (40, 50) F
Genrish500 [490]

Answer:

36 and 54

Step-by-step explanation:

54-36=18

54+36= 90

3 0
3 years ago
The floor of a triangular room has an area of 32 1/2 sq.m. If the triangle’s altitude is 7 172 m, write an equation to determine
sineoko [7]

Answer:

\frac{(2)A}{h} =b

b=0.00906m

Step-by-step explanation:

Hello! To solve this exercise we must remember that the area of ​​any triangle is given by the following equation

A=\frac{bh}{2}

where

A=area=32.5m^2

h=altitude=7172m

b=base

Now what we should do take the equation for the area of ​​a rectangle and leave the base alone, remember that what we do on one side of the equation we must do on the other side to preserve equality

A=\frac{bh}{2} \\\frac{2}{h} A=\frac{bh}{2} \frac{2}{h} \\

\frac{A(2)}{h} =b

solving

\frac{2(32.5)}{7172} =0.0090[tex]\frac{A(2)}{h} =b\\b=0.00906m

4 0
3 years ago
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3 years ago
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The perimeter of a rectangle is 42 cm. the pength is 3 cm more than the width, write an equation
Orlov [11]

Length: x+3

Width: x

(x+x+3)*2 = 42

(2x+3)*2 = 42

ANSWER: 4x+6 = 42

5 0
3 years ago
G(x) = -2x + 2<br>h(x) = 3x+4<br>Find (gºh)(1)​
bixtya [17]

Answer:

- 12

Step-by-step explanation:

To evaluate (g ○ h)(1), evaluate h(1) then substitute this result into g(x)

h(1) = 3(1) + 4 = 3 + 4 = 7, then

g(7) = - 2(7) + 2 = - 14 + 2 = - 12

4 0
3 years ago
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