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Colt1911 [192]
3 years ago
12

Calculators cost $12.99 each, rulers cost $0.49 each, pencils cost $0.10 each, and erasers

Mathematics
1 answer:
BaLLatris [955]3 years ago
8 0

Given :

Calculators cost $12.99 each, rulers cost $0.49 each, pencils cost $0.10 each, and erasers  cost $0.05 each.

To Find :

How much would Mrs. Algebra's single order be.

Solution :

Total price paid by Mrs. Algebra = Price of pencil + price of ruler + price of calculator + price of eraser.

T = $(0.10 + 0.49 + 12.99 + 0.05)

T = $13.63

Therefore, Mrs. Algebra's single order cost is $13.63 .

Hence, this is the required solution.

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Nicole tutors history. For each hour that she tutors she earns 50 dollars. Her earnings, (E) in dollars, after tutoring for (h)
dangina [55]

Answer:

$150

Step-by-step explanation:

Find how much Nicole earns for 3 hours by plugging in 3 as h in the function:

E(h) = 50h

E(3) = 50(3)

E(3) = 150

So, for tutoring for 3 hours, Nicole will earn $150

3 0
3 years ago
There are 4 books on a shelf. books are added to the shelf at a rate of 2 books per minute. the total number of books on the she
Bad White [126]

The algebraic equation to represent the given situation is as follows,

y = 4 + 2x

What is an algebraic equation?

The term "algebraic equation" refers to a formulation of the equality of two expressions using the algebraic operations of addition, subtraction, multiplication, division, raising to a power, and extraction of a root on a set of variables.

An expression that includes variables, constants, and algebraic operations is known as an algebraic expression in mathematics (addition, subtraction, etc.).

Forming the Algebraic Equation

Number of book present on the shelf initially = 4

It is given that 2 books are added per minute to the shelf.

If x is the number of minutes, then the books added will be 2x.

If y is the total number of books present on the shelf, then the algebraic equation is given as,

y = Number of books initially present on the shelf  + 2x

⇒ y = 4 + 2x

Thus, y = 4 + 2x is the required algebraic equation.

Learn more about algebraic equation here:

brainly.com/question/953809

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6 0
2 years ago
Zola is cutting a rope that is 3 yards long into pieces that are 4 inches long.
Inessa [10]

Answer:

432. Zola will have 432 4-inch pieces of rope.

4 0
1 year ago
Tennessee covers an area of about 109,247 square kilometers. This includes about 2,403 square kilometers of inland water. What p
stepladder [879]

Step-by-step explanation:

2,403/109,247 X 100

only 2.2% of Tennessee is covered in water

6 0
3 years ago
n automobile manufacturer claims that its van has a 37.4 miles/gallon (MPG) rating. An independent testing firm has been contrac
JulsSmile [24]

Answer:

Then z(s) is out of the acceptance region, we reject H₀,  doubts of the independent testing firm are valids

Step-by-step explanation:

We will develop a Hypothesis Test ( a 2 tail test since the independent testing firm is interested in finding out  if there is an incorrect MPG rating from the manufacturer

Test Hypothesis :

Null hypothesis                             H₀            μ    =    μ₀

Alternative Hypothesis                Hₐ             μ    ≠    μ₀

Significance Level   α  = 0,05    α/2  =  0,025

z(c) for α/2   from z-table      z(c)  = - 1, 96   and by symmetry  z(c) = 1,96

Calculating  z(s)

z(s) =  ( μ  -  μ₀ ) / σ /√n

z(s) = ( 37,8 - 37,4 ) / 2,3 /√280

z(s) = 0,4 * 16,73 / 2,3

z(s) = 2,90

Comparison between z(c)  and  z(s)

z(s) > z(c)       2,90 > 1,96

Then z(s) is out of the acceptance region, we reject H₀,  doubts of the independent testing firm are valids

8 0
3 years ago
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