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wariber [46]
4 years ago
15

Can some one please help me ?

Mathematics
2 answers:
Naddik [55]4 years ago
8 0

110% =1.10

 multiply the old price by that

2.85 *1.10 = 3.135

 round to 3.14

 new price is $3.14

AnnyKZ [126]4 years ago
8 0
The answer will be D
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What is the volume of the pyramid?
igor_vitrenko [27]
Volume of pyramid = 1/3 (B) (h)
B is the area of base length.

V=1/3(121)(12)
V=484 cm^2
4 0
3 years ago
Read 2 more answers
If 3 times an integer is 12 more than the next consecutive odd<br> integer, what is that integer?
Ilia_Sergeevich [38]

Answer:

3x5

Step-by-step explanation:

15 is an integer and odd

7 0
3 years ago
The following probability distributions of jobsatisfaction scores for a sample of informationsystems (IS) senior executives and
sineoko [7]

Answer:

a) 4.076

b) 3.9

c) variance for executives=1.128

variance for middle mangers=0.73

d)standard deviation for executives=1.062

standard deviation for middle mangers=0.854

e) Overall job satisfaction for senior executives is higher than middle manager.

Step-by-step explanation:

IS senior executives

Job Satisfaction       1    2          3       4     5

Probability          0.05 0.093 0.03 0.425 0.41

IS middle manager

Job Satisfaction  1       2    3        4    5

Probability         0.01 0.1 0.12 0.46 0.28

Let X denotes IS senior executive and Y denotes IS middle manager.

a)

E(X)=∑x*p(x)=1*0.05+2*0.093+3*0.03+4*0.425+5*0.41

E(X)=0.05+0.186+0.09+1.7+2.05

E(X)=4.076

b)

E(Y)=∑y*p(y)=1*0.1+2*0.1+3*0.12+4*0.46+5*0.28

E(Y)=0.1+0.2+0.36+1.84+1.4

E(Y)=3.9

c)

V(x)=∑x²*p(x)-(∑x*p(x))²

∑x²*p(x)=1*0.05+4*0.093+9*0.03+16*0.425+25*0.41

∑x²*p(x)=0.05+0.372+0.27+6.8+10.25

∑x²*p(x)=17.742

V(x)=17.742-(4.076)²

V(x)=1.128

V(y)=∑y²*p(y)-(∑y*p(y))²

∑y²*p(y)=1*0.1+4*0.1+9*0.12+16*0.46+25*0.28

∑y²*p(y)=0.1+0.4+1.08+7.36+7

∑y²*p(y)=15.94

V(y)=15.94-(3.9)²

V(y)=0.73

d)

S.D(x)=√V(x)

S.D(x)=√1.128

S.D(x)=1.062

S.D(y)=√V(y)

S.D(y)=0.854

e)

Overall job satisfaction for senior executives is more than middle manager as expected value of senior executives is greater than expected value of middle manger with relatively higher variability than middle manager.

3 0
4 years ago
(cosecA+1).(1-sinA)=cosA.cotA<br>please can you answer this as fast as possible ​
nordsb [41]

Answer:

step by step below

Step-by-step explanation:

(cscA+1).(1-sinA)=cosA.cotA

(1/sinA +1).(1-sinA) = 1/sinA*(1 - sinA) + 1*(1-sinA)

                             = 1/sinA - 1  + 1 - sinA

                             = 1/sinA - sinA

                             = (1 - sin²A) / sinA

                             =cos²A / sinA

                             = cosA*cosA / sinA

                             =cosA*cotA

3 0
3 years ago
Quincy uses the quadratic formula to solve for the values of x in a quadratic equation. He finds the solution, in simplest radic
julsineya [31]

Since the value of the discriminant (-19) < 0, no real solution(s)/root(s) exist for the equation. Thus, we can choose the first option:

"Zero, because the discriminant is negative".

A quadratic equation is a polynomial of degree 2, in a single variable x.

The standard form of a quadratic equation is ax² + bx + c = 0.

The quadratic formula is used to find the solution(s)/root(s) of this equation.

The quadratic formula is:

x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}

In this formula, b^2-4ac is called the discriminant (D).

The solution(s)/root(s) of the equation, depends on this discriminant value as follows:

  • When D > 0, the roots of the equation are real and distinct.
  • When D = 0, the roots of the equation are real and equal.
  • When D < 0, then no real roots exist.

In the question, we are given that the simplest form of Quincy's equation in the radical form was,

x = \frac{-3 \pm \sqrt{-19} }{2}.

Comparing this to the quadratic formula,

x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}

we get the discriminant (D) = -19.

Since the value of the discriminant (-19) < 0, no real solution(s)/root(s) exist for the equation. Thus, we can choose the <u>first option</u>:

"Zero, because the discriminant is negative".

Learn more about discriminant at

brainly.com/question/14072293

#SPJ1

For complete question, refer to the attachment.

4 0
2 years ago
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