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Temka [501]
3 years ago
11

(s – 7)^2= 0 then, what is the value of: (s-9)(s + 3)?

Mathematics
1 answer:
GrogVix [38]3 years ago
3 0

Answer:

s² - 6s - 27

Step-by-step explanation:

(s - 7)² = 0

s² + 49 - 14s = 0

Now,

(s - 9)(s + 3)

(s × s) + (s × 3) - (9 × s) - (9 × 3)

s² + 3s - 9s - 27

s² - 6s - 27

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The answer is .48 because 6/15 is 4. which means .48 is bigger
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​ Trapezoid W′X′Y′Z′ ​ is the image of trapezoid WXYZ under a dilation through point C.
erma4kov [3.2K]

That would be the ratio of  2 corresponding sides

= 6/8

= 3/4  answer

6 0
3 years ago
Sasha’s daily tips this work week were $43, $32, $65, $88, $50, and $72. Is Sasha correct in thinking that the mean accurately r
mars1129 [50]

<em>Sasha’s daily tips this week were $43, $32, $65, $88, $50, and $72. Is Sasha correct in thinking that the mean accurately represents how much money she makes in daily tips? </em>

a. Yes, Sasha is correct. The mean amount she makes is $58.33 in a day.

b. Yes, Sasha is correct. The mean amount she makes is $65.33 in a day.

c. No, Sasha is incorrect. The median amount she makes is $53.00 in a day.

d. No, Sasha is incorrect. The median amount she makes is $60.00 in a day.

<h3>Answer:</h3>

a. Yes, Sasha is correct. The mean amount she makes is $58.33 in a day.

<h3>Step-by-step explanation: </h3>

Gather all of Sasha's daily tips, we will add them all and divide them by the number of tips on the workweek. We will get:

\frac{43 + 32 + 65 + 88 + 50 + 72}{6} = \frac{350}{6}  = 58.3333333

When rounding 58.333.. we get an answer of 58.33

6 0
3 years ago
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Q1 (a) A random variable X has the following probability function: Х O 1 2 3 4 5 and P(x) 0 k 2k 2k 3k 5k
gogolik [260]

Answer:

(i) It is known that the sum of probabilities of a probability distribution of random variables is one.

∴0+k+2k+3k+k

2

+2k

2

+(7k

2

+k)=1

⇒10k

2

+9k−1=0

⇒(10k−1)(k+1)=0

⇒k=−1,

10

1

k=−1 is not possible as the probability of an event is never negative.

∴k=

10

1

(ii) P(X<3)=P(X=0)+P(X=1)+P(X=2)

=0+k+2k

=3k

=3×

10

1

=

10

3

(iii) P(X>6)=P(X=7)

=7k

2

+k

=7×

10

1

2

+

10

1

=

100

7

+

10

1

=

100

17

(iv) P(0<X<3)=P(X=1)+P(X=2)

=k+2k

=3k

=3×

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1

=

10

3

4 0
3 years ago
Volume of sphere with radius of 6
Solnce55 [7]

Answer:

904.8  cm rounded (904.78 cm^3) to the nearest tenth.

Step-by-step explanation:

V= 904.8  cm rounded (904.78 cm^3) to the nearest tenth.


Step-by-step explanation:


The volume of a sphere is given as  4/3πr^3

There is only one variable, the radius, which we are given in the problem.

since the radius is 6 cm, we can plug that in to the formula

4/3π6^3


Put this into the calculator, and we see that the volume is  

904.8  cm rounded (904.78 cm^3) to the nearest tenth.



5 0
3 years ago
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