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vlada-n [284]
3 years ago
8

Maths question: Expand 3x (2x-1)

Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0
<span>Expand 3x (2x-1)

3x outside must </span>multiply both terms inside the brackets:

= 6x^2 - 3x

Hope it helps
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Can you help me with theses problems plz.Also can you explain to me how to get it.Thank you
zysi [14]
1-14, You're just dividing. Like #1, -14÷2=-7 (negative fourteen divided by two, equals negative seven). A positive and a positive make a positive, a negative and a positive make a negative, a negative and a negative, make a positive. The word problems your also dividing, for example, #15, -40÷4=-10. Use the numbers that are given to you.
7 0
3 years ago
Amadahy wants to buy a card and two gifts for her friend. Cards cost 3.49 each and gifts cost $10.63 each. Amadahy has a 20$ bil
BartSMP [9]

Answer:

Given that Amadahy has a $ 20 bill, and wants to buy a card and two gifts for her friend, and knowing that each card costs $ 3.49 and each gift costs $ 10.63, the total cost of the 3 items would be $ 24.75 (10.63 x 2 + 3.49 ).

Therefore, she will not be able to purchase the products she wants, since she will need $ 4.75 to reach the amount necessary for it (24.75 - 20).

7 0
3 years ago
Mr. and Mrs. Nelson are going to build a new home. They need to have working drawings of their house plans created by a design f
matrenka [14]

Answer:

Options 2), 4), and 5) are correct

Step-by-step explanation:

<u>Rock the House Digital Designs</u>

  • Cost = $(500 + 50h)

<u>Elegant Home Architects</u>

  • Cost = $(75h)

===========================

<u>Answer options:</u>

1)The expression 50h represents the total charge for Rock the House Digital Designs.

  • Incorrect. Additional $500 charged.

2)The expression 75h represents the total charge for Elegance Home Architects.

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3)The expression 500 + 75h + 50h represents the total amount the Nelsons will spend working drawings of their new house plans.

  • Incorrect. They will choose one of the options.

4)If the Nelsons hire the design firm for 15 hours, then Elegance Home Architects will be cheaper.

  • Correct. It will cost 15*75 = $1125. Alternative costs 500 + 50*15 = $1250

5)If the Nelsons hire the design firm for 25 hours, then Rock the House Digital Designs will be cheaper.

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8 0
3 years ago
Which of the following lengths can be the sides of a triangle?
Dmitriy789 [7]

Answer:

C. 44 cm, 30cm, and 16 cm

Step-by-step explanation:

Sana nakatulong

7 0
3 years ago
Please help I will mark as brianliest
shutvik [7]

Answer:

x = -4

Step-by-step explanation:

-5x-4x-2 = -8x+2 is the only one with a solution.

-5x-4x-2 = -8x+2

-x-2 = 2

-x = 4

x = -4

8 0
2 years ago
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