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aksik [14]
3 years ago
9

PLS HELP WILL MARK BRAINLIEST!!!!!!!! answer both questions (they are two separate questions)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

\frac{ {x }^{12} }{ {x}^{6} }  =  \\

{x}^{12 -6 }  =

{x}^{6}

Thus c is the correct option .

_____________________________________________

\frac{ - 57 {y}^{2}  {z}^{3} }{3 {y}^{5}  {z}^{3} }  =  \\

\frac{ - 19 \times 3 {y}^{2} {z}^{3}  }{ {y}^{3}  \times 3 {y}^{2}  {z}^{3} }  =  \\

\frac{ - 19}{ {y}^{3} }  \\

Thus a is the correct option .

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Explain the difference in meaning between 8 + 6÷2 and 8 + 6 ÷ 2 .
Finger [1]
PEMDAS- order of ops.

1st problem you need to divide 6/2 and then add8 and the second you divide 6/2 then add 8.
3 0
3 years ago
Samy recorded the number of different types of pets his friends have in the table shown below:
KIM [24]
The first choice is correct because the number of crosses against the pets is equal to its actual quantity.
8 0
3 years ago
What is the point that lies on a graph for 10y=3x-11. Is it A (2,-.5) B (4,1) C (6,16.3). Or D (8,23)?
Anit [1.1K]
Case A : x=2, y=-5
so putting the values of x and y in the equation, we get 10y -3x should be -11
so, 10* (-5) - 3 *2 = -50-6 = -56
case B , value of equation = 10*4 - 3*1 = 37
case C, value of equation = 10*6 -3*16.3 = -11.1
Case D, value of equation = 10*8-3*23 = 11
Ans will be C
8 0
3 years ago
*GEOMETRY*please help me find the surface area of the solid along with the volume of it step by step!
Serjik [45]

Surface area of the solid = 7.1781 in²

Volume of the solid = 0.804 in³

Explanation:

Surface area of the solid = surface area of the square prism - 2(base of the cylinder) + lateral surface of cylinder

surface area of a square prism = 2(lw + lh + wh)

l = length = 1 in

w = length = 1 in

h = height = 1 in

\begin{gathered} \text{Surface area = 2(1}\times1\text{ + 1}\times1\text{ + 1}\times1) \\ \text{Surface area = 2(1 + 1 + 1) = 2(3)} \\ \text{Surface area = 6 in }^2 \end{gathered}

using the value π as it is on the calculator

Base area of a cylinder = πr²

2(Base area of cylinder) = 2πr² = 2π(0.25)² = 0.3927

Lateral surface area = 2πrh = 2π(0.25)(1) = 1.5708

Surface area of the solid = 6 - 0.3927 + 1.5708

Surface area of the solid = 7.178 in²

Volume of the solid = Volume of the square prism - volume of the cylinder

Volume of square prism = length × width × height

length = 1 in, width = 1 in, height = 1 in

Volume of the solid = 1 in × 1 in × 1 in = 1 in³

Volume of a cylinder = πr²h

Volume of the cylinder = π × 0.25 × 0.25 × 1 = 0.196

Volume of the solid = 1 - 0.196

Volume of the solid = 0.804 in³

4 0
2 years ago
A camera shop stocks eight different types of batteries, one of which is type A76. Assume there are at least 31 batteries of eac
Sauron [17]

Answer: 12,620,256

Step-by-step explanation:

Given: The camera shop socks eight different types of batteries and there re at least 31 batteries of each type.

Here we want to select r= 31 batteries from n= 8 kinds of batteries, then formula we use to find number of ways is ^{n+r-1}C_r=\ ^{31+8-1}C_{31}

=^{38}C_{31}=\dfrac{38!}{31!(38-31)!}\\\\=\dfrac{38!}{31!7!}\\\\=\dfrac{38\times37\times36\times35\times34\times33\times32\times31!}{31!\times5040}\\\\=12620256

Hence, the number of ways can a total inventory of 31 batteries be distributed among the eight different types = 12,620,256

3 0
3 years ago
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