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Kruka [31]
3 years ago
12

Evaluate the expression 2(5x -3y) if x = -1/2 and y = 1

Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0
The answer is -11!
once plugged in, the new equation would be 2(-2.5 -3)
this would equal 2(-5.5)
the final answer would be -11
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Is the relation a function?<br> X Y
AveGali [126]

Answer:

yes

Step-by-step explanation:

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6 0
3 years ago
Find the volume of the solid where the cone and half sphere are hollow. Use 3.14 for П ; height is 19 in; radius is 5 in. Round
Vera_Pavlovna [14]

Volume of Solids

The volume of the solid is 758.83 in³

Step-by-step explanation:

Given that the cone and half sphere is hollow

The volume of the cone = 1/3 \pi r^{2} h\\

The Volume of the sphere  = 4/3 \pi r^{3}

So the Volume of the half sphere =2/3\pi r^{3}

The volume of solid = volume of cone + volume of the half sphere

V = V_{1}  + V_{2}

Given

height h = 19 in

radius r = 5 in

V_{1\\}  = 1/3 \pi r^{2} h

     = 1/3 × 3.14 × 5 × 5 × 19

     = 497.16 in³

V_{2}  =  2/3 \pi r^{3}

   = 2/3 × 3.14 × 5 × 5 × 5

   = 261.67 in³

V =  497.16 in³ + 261.67 in³

  = 758.83 in³

Hence the volume of the solid is 758.83 in³

3 0
4 years ago
Please help ! thanks ! :)
Rufina [12.5K]

Answer:

a) is B because it inrease quite rapidly and then slowly increase

b) is c as it increase and then decreases quite soon and rapid and then increase quite rapidly again

Step-by-step explanation:

4 0
3 years ago
Please answer please
loris [4]
4/5 + a = 1
=1/5

*try using cymath it helps!
6 0
4 years ago
Read 2 more answers
Help <br>and show each step.​
kherson [118]

Answer:

\frac{9.7 \times 4.13}{8.08 - 3.9}  \\  \frac{40.06}{4.18}   \\ 9.58 \:  \:  \:  \:  \: answer

4 0
3 years ago
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