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Salsk061 [2.6K]
3 years ago
10

TRUE OR FALSE: 16 + 72n = (2 + 9n)(8)

Mathematics
2 answers:
scoray [572]3 years ago
3 0

Answer:

true

Step-by-step explanation:

please see the image I attached of my work

Vilka [71]3 years ago
3 0

Answer: this is true

Step-by-step explanation:

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4x – 3y=8<br> 2. 5x – 2y = -11
AlladinOne [14]

Answer:

x = -7

y =  - 12

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

x =  \frac{3}{4}y + 2

Plug this expression for x in the bottom equation to get

5( \frac{3}{4}y + 2) - 2y=  - 11

We expand to obtain

\frac{15}{4} y + 10 - 2y =  - 11

Multiply through by 4

15y + 40 - 8y =  - 44

Group similar terms

15y - 8y =  - 44 - 40

7y =  - 84

y =  -  \frac{84}{7}  =-12

This means

x =  -12\times  \frac{3}{4}  + 2

x =  - 7

6 0
4 years ago
Tell whether the expression 3x^4 -5x +7 is a polynomial. If it is polynomial , find the degrees and determine whether it is a mo
ioda

Given:

The polynomial is:

3x^4-5x+7

To find:

The degrees and determine whether it is a monomial, binomial, or trinomial.

Solution:

We have,

3x^4-5x+7

The highest power of the variable <em>x</em> in the given polynomial is 4. So, the degree of the polynomial is 4.

Monomial: Polynomial with one term.

Binomial: Polynomial with two terms.

Trinomial: Polynomial with three terms.

In the given polynomial, we have three terms 3x^4,-5x,7. So, the given polynomial is trinomial.

Therefore, the degree of the polynomial is 4 and it is a trinomial.

5 0
3 years ago
Please please help me on this question
Delvig [45]
-7x^2 - 6x^2 + 3x + 5x - 5 + 2
-13x^2 + 8x - 3
5 0
3 years ago
The formula for the volume of a cube is V = s³, where s represents the side length of the cube. If a cube has a side length of 4
Alla [95]

Answer:

91.125 or 729/8

Step-by-step explanation:

take 4.5^3 to get 91.125

7 0
3 years ago
Read 2 more answers
PLEASE HELP I NEED THIS TO BE DONE
yanalaym [24]
To find the mean you add all the #'s and divide by how many there are. 4+5+6+7 +8= 30 /5 is 6. Tara is right. 
5 0
3 years ago
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