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zubka84 [21]
2 years ago
7

Which expression is equivalent to 4r2/514.3V5r8, if x=0?

Mathematics
1 answer:
san4es73 [151]2 years ago
8 0

Step-by-step explanation:

I think it would be c if not D

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A soccer team has 15 players and needs to choose a captain and an assistant captain. How many ways can those positions be select
Molodets [167]

Answer:

30?

Step-by-step explanation:

I think its 30 because 15*2 is 30 but I really don't know im sorry

3 0
3 years ago
Solve the 3x3 system shown below. Enter the values of x, y, and z.
slamgirl [31]

Answer:

x = 1

y = -1

z = 2

Step-by-step explanation:

You have the following system of equations:

x+2y-z=-3\ \ \ \ \ (1)\\\\2x-y+z=5\ \ \ \ \ \ (2)\\\\x-y+z=4\ \ \ \ \ (3)

First, you can subtract euqation (3) to equation (1):

x + 2y - z = -3

<u>-x +y  -z = - 4 </u>

0   3y  -2z = -7    (4)

Next, you can multiply equation (3) by 2 and subtract it to equation (2):

2[ x -y + z = 4]

<u> -2x +y -z = -5</u>

  0 -y + z= 3     (5)

You multiply equation (5) by 2 and sum (5) with (4):

2[ -y  + z = 3]

<u>    3y  -2z= -7</u>

  y  + 0 = -1

Then y = -1

Next, you replace y=-1 in (5) to obtain z:

-(-1) + z = 3

z = 2

Finally, you can replace z and y in the equation (3) to obtain x:

x - (-1) + (2) = 4

x = 1

7 0
3 years ago
Imani was assigned to make 64 cookies for the bake sale. If Imani made 25% more than they were assigned, how many cookies were m
Marina CMI [18]

Answer:

80 cookies

Step-by-step explanation:

25% of 64 is 16
16+64=80

5 0
2 years ago
The average cost per hour in dollars of producing x riding lawn mowers is given by the following. C(x)=0.7x^2+25x-258+(2500/x).
Snezhnost [94]
A) See the attached graph.

b) $298.92 per hour

8 0
3 years ago
On a test that has a normal distribution, a score of 32 falls three standard
lions [1.4K]

Answer:

Mean = 62

Step-by-step explanation:

X = mean ± sd

82 = mean + 2(s.d) - - (1)

32 = mean - 3sd ___(2)

82 = mean + 2sd

82 - 32= 2sd + 3sd

50 = 5sd

sd = 50/5

sd = 10

From (2):

32 = mean - 3sd

32 = mean - 3(10)

32 = mean - 30

32 + 30 = mean

62 = mean

3 0
2 years ago
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