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aleksandr82 [10.1K]
2 years ago
5

15=-3(2c+d) solve for c

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
3 0

Answer:

c = \frac{-5-d}{2}

Step-by-step explanation:

Given

15 = - 3(2c + d) ( divide both sides by - 3 )

- 5 = 2c + d ( subtract d from both sides )

- 5 - d = 2c ( isolate c by dividing both sides by 2 )

\frac{-5-d}{2} = c

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Im using all my points for this pls help
natita [175]

Answer:

A. 14 cm

B. W== 0.5in

Step-by-step explanation:

Hope this helps

3 0
3 years ago
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A beanie hat is to be made from a piece of fabric and one square metre of this fabric weighs 470g.
Ainat [17]

Answer:

The hat weight = 81.166 g

Step-by-step explanation:

∵The figure formed by a rectangle and two identical semi-circle

∵ The length of the rectangle = 52 cm = 0.52 m

∴ The length of the two diameter = 52 cm = 0.52 m

∴ The radius of the semi-circle = 52 ÷ 4 = 13 cm = 0.13 m

∴ The width of the rectangle = 36 - 13 = 23 cm = 0.23 m

∴ The area of the rectangle = 0.52 × 0.23 = 0.1196 m²

∴ The area of the semi-circles = π (0.13)² = 0.0531 m²

∴ The area of the hat = 0.1196 + 0.0531 = 0.17269292 m²

∵ 1 m² = 470 g

∴ The weight of the hat = 0.17269292 × 470 = 81.16567 ≅ 81.166 g

3 0
2 years ago
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Simplify the polynomial then evaluate for x=-1 3x^2-4+2x-1+x^2
yuradex [85]

Answer:

-3

Step-by-step explanation:

Simplified polynomial: 4x^2 + 2x - 5

Plug in -1: 4(-1)^2 + 2(-1) - 5

= -3

7 0
2 years ago
the equation y=5,280x gives the number of feet,y,in x miles.what does the number 5,280 represent in this relation ship
siniylev [52]

The term 5280 represents the number of feet in a mile in this relationship y=5,280x.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that:

The linear equation is:

y=5,280x

The number 5,280 here represents the number of feet in a mile in this connection.

The equation is calculated:

Since Y=5,280x, the equation

It gives the quantity, y, of feet in x miles.

We may conclude that 5,280 represents the number of feet in a mile in this relationship.

Thus, the term 5280 represents the number of feet in a mile in this relationship y=5,280x.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

7 0
1 year ago
8×9=(5+3)×9 just need help with the answer
Svetllana [295]

Answer:

It is true.

Step-by-step explanation:

8 multiplied by 9 is 72.   5+3 is 8, which is multiplied by 9, giving the same answer on both ends.

3 0
3 years ago
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