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Gemiola [76]
3 years ago
10

Solve the equation and show your work please! 3(2y - 0.3) = 19.4 - y

Mathematics
1 answer:
san4es73 [151]3 years ago
5 0

Answer:

y=2.9

Step-by-step explanation:

3(2y - 0.3) = 19.4 - y

6y-0.9=19.4

6y+y-0.9=19.4

6y+y=19.4+0.9

7y=19.4+0.9

7y=20.3

7y/7=20.3/7 (divid each one by seven. that's what /7 means)

y=2.9

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Part A: Describe how you can decompose this shape into triangles. (2 points)
kvv77 [185]

Answer:

A: 6 triangles with height 10.4 inches each and base 12 inche

B: 62.4 square inches

C: 374.4 square inches

Step-by-step explanation:

Part A: You can form a triangle by connecting E to the top of the segment and connecting the top of the segment to D. Recreating this with each section will create 6 triangles with height 10.4 inches each and base 12 inches.

Part B: The area of a triangle is A = 1/2b*h. Substitute h = 10.4 and b = 12.

A = 1/2*10.4*12 = 62.4

Part C: There are 6 triangles each with area 62.4. So the area of the whole figure will be 6*62.4 = 374.4.

8 0
3 years ago
What is the solution to the equation 3 square root x+4+3 square root 2x+8=0? x = –12 x = –4 x = 4 x = 12
Gre4nikov [31]

Answer:

x=-4

Step-by-step explanation:

3 0
3 years ago
A washer and a dryer cost $745 combined. The washer costs $95 more than the dryer. What is the cost of the dryer?
krok68 [10]

Answer:

let cost of washer be x

cost of dryer be $745-x

we have

cost of washer =$95+($745-x)

x=$95+$745-x

x+x=$840

2x=$840

x=$840/2=$420

the cost of washer =$420

<h2>cost of drier </h2>

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$325 is the cost of dryer.

7 0
3 years ago
25-LV
Shkiper50 [21]

Answer:

78

Step-by-step explanation:

you divide the amos number is give you

6 0
3 years ago
If x=10^a , y=10^b and x^b.y^a=100.prove that xy=1​
BabaBlast [244]

Answer:

ab=1

Step-by-step explanation:

Assuming that you meant ab=1

x=10^{a}\\\\y=10^b\\\\x^b*y^a=100\\\\(10^a)^b*(10^b)^a=100\\\\10^{ab}*10^{ba}=100\\\\10^{ab+ba}=100\\\\10^{2ab}=100\\\\(10^2)^{ab}=100\\\\100^{ab}=100\\\\ab=1this is because the exponents have to be equal

8 0
3 years ago
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