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tangare [24]
3 years ago
6

the cost of the book is twice the cost of the pen if the both item cost 36 calculate that cost for each​

Mathematics
1 answer:
BARSIC [14]3 years ago
5 0

Answer:

pen  = 12

book = 24

Step-by-step explanation:

x = cost of pen

2x + x = 36

3x = 36

x = 12

pen  = 12

book = 24

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If x = 3 cm and z = 5 cm, what is the length of y?
kherson [118]

Answer:

D.

Step-by-step explanation:

8 0
3 years ago
What is the slope of a line that is perpendicular to the line whose equation is 7x−3y=10?
Sonja [21]

Since this equation is already in standard form, there is no need to convert it. Standard form is Ax + By = C. In this equation, 7 = A, 3 = B, and 10 = C. From standard form, Ax + By = C equals negative A over B.

7x + 3y = 10

↓

\displaystyle\ m= \frac{-7}{-3}

Then you'd simplify.

\displaystyle\ m=\frac{7}{3}

The slope cannot be simplified any more, so this would be the final answer.

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<em>- Marlon Nunez</em>

7 0
3 years ago
which of the following is the correct set of hypotheses to test if the researchers are interested in evaluating whether there is
e-lub [12.9K]

Answer:

Step-by-step explanation:

check the attached document for answer

6 0
4 years ago
Tri-County Utilities, Inc., supplies natural gas to customers in a three-county area. The company purchases natural gas from two
Sav [38]

Answer:

The network model is attached.

Step-by-step explanation:

Total Demand from each Gas Company are:

Southern Gas, 500 units;

Northwest Gas, 400 units.

Total Supplies to each County are:

Hamilton County, 400 units;

Butler County, 200 units;

Clermont County, 300 units.

The distribution costs per unit (in thousands of dollars) are as follows

-----------Hamilton-- Butler-- Clermont

Southern Gas--- 10 ---20--- 15

Northwest Gas ----12 ----15---- 18

The network representation of these information is given in the attachment.

3 0
4 years ago
Please help, thank you!!
julsineya [31]

Answer:

Step-by-step explanation:

Givens

  • Triangle
  • Base = 11  inches
  • Height = 12 inches

Formula

A = Base * height / 2

Solution

  • Area = 11 * 12/2
  • Area = 132 /2
  • Area = 66 square inches.
4 0
3 years ago
Read 2 more answers
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