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Marat540 [252]
2 years ago
15

1. What is the degree of 3x³y²z + 2xy³ - 9y + 5? A. 3 B. 4 C. 5 D. 6

Mathematics
2 answers:
devlian [24]2 years ago
7 0

Answer:

--------------HeyA BenjamiN-----------------

Explanation :

  • All you need to do is count up the powers of each term and then sum it , the highest power is considered to be the degree.

SolvinG :

  • 3x³y²z = 6
  • 2xy³ = 4
  • 9y = 1

- Our final answer is 6 .

---------------HappY LearninG <3 -------------

abruzzese [7]2 years ago
3 0

Answer:

d. 6

Step by step explanation:

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Is the answer no solution?
Nutka1998 [239]
Cross multiply and solve
1(y^2-9)=6(y-3)

y^2-9= 6y-18
y^2-6y-9+18=0
y^2-6y+9=0

(y-3)(y-3)=0
(y-3)=0
y=3

When you plug y in however, it makes the denominator 0, making both fractions undefined.

Final answer: No real solution
4 0
3 years ago
Esmeralda likes to listen to music while she works out. She had a playlist on her mp3 player that lasted 40 minutes,but she acci
ikadub [295]

Answer:

Esmeralda has enough music left in her playlist for a 30 minute workout

Step-by-step explanation:

we know that

If Esmeralda accidentally deleted 25% of the music, then the percentage of music left in her playlist equals 100%-25%=75%.

75\%=75/100=0.75

Find out how many minutes represent 75% of 40 minutes

Multiply 40 by 0.75          

40(0.75)=30\ minutes

therefore

Esmeralda has enough music left in her playlist for a 30 minute workout

3 0
3 years ago
Find constants b and c in the polynomial p (x )equals x squared plus bx plus cp(x)=x2+bx+c such that ModifyingBelow lim With x r
andrezito [222]

Answer:

b=2

c=-24.01

Step-by-step explanation:

If I understood your question right you need to find the constants b and c in the polynomial:

p(x)=x^2+bx+c

such that:

\lim_{x\to4} \frac{x^2+bx+c}{x-4}

In order to get a system of two equations you can find limes when x goes to 4 from the right side or from the left side.

I solved this using a number that is close to 4. When it goes from right I used 4.1 and from left 3.9. This way you get two equations:

16.81+4.1b+c=1\\15.21+3.9b+c=-1

When you solve the system you get the answers above.

5 0
3 years ago
Which matrix is the product of a 3 × 3 identity matrix and the scalar 3?
Ludmilka [50]

Answer:

\left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

Step-by-step explanation:

In order to find out the resulting matrix, we will have to multiply the identity matric and the scalar 3:

The 3x3 identity matrix is:

\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]

Multiplying with scalar 3:

3\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]

The scalar will be multiplied by each element of the matrix.

Multiplying zeros with scalar 3 will give us zero. So the resulting matrix will be:

\left[\begin{array}{ccc}3*1&0&0\\0&3*1&0\\0&0&3*1\end{array}\right] = \left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

So the resultant matrix will be a scalar matrix with 3 at diagonal positions..

5 0
3 years ago
Read 2 more answers
Y=−4x+6 and 3x+4y=−2 Is (2,2) a solution of the system?
tigry1 [53]

Answer:

no, it is not the answer is(2,-2)

8 0
3 years ago
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