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4 years ago

The product of x and 7

Mathematics

2 answers:

EastWind [94]4 years ago

8 0

Write that as 7x. Writing it as x7 could lead to confusion. 7*x would be OK.

Kipish [7]4 years ago

8 0

Answer:

Step-by-step explanation:

The PRODUCT is multiplication therefore, 7 is multiplying by x.

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Mrs. Jefferson would like to wallpaper a wall in her guest room. She would like to wallpaper everything but the door. Each roll

Vanyuwa [196]

Answer: Mrs. Jefferson should plan to spend 119.1 on wallpaper

Step-by-step explanation:

She would like to wallpaper everything but the door. It means that the area to be covered by the wallpaper would be the area of the 4 walls of the room - the area of the door.

The room is 18ft in length and 12ft in width. Thea area of each side of the room is

18 × 12 = 216 square feet

Area of the 4 sides of the room is

216 × 4 = 864 square feet

The door is 7ft in width and 3 ft in length. Area of door is

7 × 3 = 21 square feet

Area to be covered is

864 - 21 = 843 square feet

Each roll of wallpaper covers approximately 160 square ft. Therefore, the number of rolls needed is

843/160 = 5.26

Since the rolls cannot be a fraction, then she needs 6 rolls

Since a roll costs 19.85, the cost of 6 rolls is

19.85 × 6 = 119.1

6 0

3 years ago

Suppose you have one pyramid with a base that is 10 meters long and 10 meters wide with a slant that is 15 meters. Now, if the l

marishachu [46]

Answer:

The difference between area of pyramids is 125 sq.m.

Step-by-step explanation:

Length of base = 10m

Breadth of base = 10 m

Slant height = 15 m

Area of pyramid = Area of 5 bases

Area of pyramid = $\frac{1}{2} \times 10 \times 15+\frac{1}{2} \times 10 \times 15+\frac{1}{2} \times 10 \times 15+\frac{1}{2} \times 10 \times 15+10 \times 10$

Area of pyramid = 400 sq.m.

Now the length of base is increased to 15

Length of base = 15m

Breadth of base = 10 m

Slant height = 15 m

Area of pyramid = Area of 5 bases

Area of pyramid = $\frac{1}{2} \times 15 \times 15+\frac{1}{2} \times 15 \times 15+\frac{1}{2} \times 10 \times 15+\frac{1}{2} \times 10 \times 15+10 \times 10$

Area of new pyramid = 525 sq.m.

Difference between area of pyramids=525 sq.m. - 400 sq.,. = 125 sq.m.

Hence The difference between area of pyramids is 125 sq.m.

4 0

4 years ago

A company's board of directors wants to form a committee of 2 of its members. There are 5 members to choose from. How many diffe

Butoxors [25]

Answer:

10 committees

Step-by-step explanation:

Let's say there names are Bob, Doris, Brenda, Alex, and Emma.

Bob and Doris

Bob and Brenda

Bob and Alex

Bob and Emma

Doris and Brenda

Doris and Alex

Doris and Emma

Brenda and Alex

Brenda and Emma

Alex and Emma

these are all different groups starting with only 5 people leading to 10 possible variations of the committee members

Hope that helps! :)

3 0

3 years ago

The Jennings family paid $371.40 for the year for their cable service. If their payments were the same each month, how much was

Andreyy89

Answer:

371.40for a year so 371.40÷12month=30.95monthly

3 0

3 years ago

Which expression is equivalent to 5y^-3

Ivanshal [37]

Answer:

5/y^3

Step-by-step explanation:

6 0

3 years ago