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Anika [276]
3 years ago
15

Jane bought four books 3 cups and seven rings. She paid four dollars per book 5 dollars per cup and $10 Paris. Estimate her chan

ge from $50 bill after buying the books and cups only

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0

4 x4 +5 x 3=31== estimate 30$

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If m = 5 and n = -2, evaluate 3m - 4n and n2 - m and find the product of the two expressions.
ddd [48]

Hence the correct answer is C) -23

Further explanation:

We have to put the values of m and n into both expression first separately and then multiply the answers.

Given expressions are:

Exp\ 1:3m-4n\\Exp\ 2: n^2-m

The values are:

m=5\\n=-2

Putting the values in expression 1:

3m-4n\\=3(5)-4(-2)\\=15+8\\=23

Putting the values of m and n in second expression

n^2-m\\=(-2)^2-5\\=4-5\\=-1

Multiplying both expressions:

(3m-4n)(n^2-m)=23* (-1)=-23

Hence the correct answer is C) -23

Keywords: Polynomials, Putting values in expressions

Learn more about polynomials at:

  • brainly.com/question/4142886
  • brainly.com/question/4934417

#LearnwithBrainly

8 0
3 years ago
Which is the equation of the function?
dlinn [17]

Answer

its the third one.

Step-by-step explanation:

7 0
3 years ago
Giving brainliest *easy*!!
Norma-Jean [14]

Answer:

452.16 square yards

Step-by-step explanation:

The equation for the SA of a sphere is A=4πr2

Substituting r = 6 yards : A= 4 * 3.14 * 6^2 = 452.16 square yards

6 0
3 years ago
Read 2 more answers
find the volume of cubical box . if the cost of painting of outer surface is rs 1440 at the rate rs 15 per mcube
bearhunter [10]
Surface of a cubical box=6(side²)

1)We have to calculate the surface of this cubical box.
Rate=cost of painting / surface  ⇒surface=cost of painting/rate

Data:
Rate=$15/m²
cost of painting=$1440

Surface=$1440/($15/m²)=96 m²

2)We find out the length of the side:

Surface of a cubical box=6(side²)

Data:
Surface of a cubical box=96 m2

Therefore:
96m²=6 (side²)
side²=96 m²/6
side²=16 m²
side=√(16 m²)=4 m

3) We find the volume of a cubical box.
volume=(side³)
volume=(4 m)³
volume=64 m³

Answer: the volume of this cubical box would be 64 m³.

3 0
3 years ago
Question One
Alex

Answer:

Step-by-step explanation:

Set up proportions. Make sure length and widths line up!

\frac{12}{5} =\frac{x}{8}

Then do butterfly method.

12(8) = 5x

Solve for x.

96 = 5x\\\\x= 19.2 in

Hope that helped!

7 0
3 years ago
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