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svet-max [94.6K]
3 years ago
7

the length of a rectangular piece of steel in a bridge is 5 meters less than double the width. the perimeter of the piece of ste

el is 44 meters. find the length of the piece of steel. find the width of the piece of steel.
Mathematics
1 answer:
elena55 [62]3 years ago
5 0
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F(x)=x^2-8x+7 in factored form​
Karolina [17]

Answer:

(x-1)(x-7)

Step-by-step explanation:

To factor the equation, find two binomials which multiply to a quadratic. The quadratic's factors are found by finding two numbers that multiply to 7 and add to -8.

-1 and -7 multiply to 7 and add to -8.

(x-1)(x-7)

7 0
3 years ago
Find Y ...............................
Arisa [49]

36/24= y/20

3/2 = y/20

(3/2) × 20 = y

3 × 10 = y

30 = y

3 0
3 years ago
A ball is dropped from a height of 8 feet. If every time it bounces, it bounces 60% of its previous height, what is the total di
vladimir1956 [14]

Answer:

<h3>20feet</h3>

Step-by-step explanation:

Initial height of the ball = 8feet

If it bounces 60% of its previous height, its new height will be;

60% of 8

= 60/100 * 8

= 480/100

= 4.8 ft

If it bounces 60% of its current distance, new height will be expressed as;

60% of 4.8

= 0.6 * 4.8

= 2.88

The height of the ball will keep reducing and form a geometric progression of the form 8, 4.8, 2.88...

In order to get the total distance traveled by the ball, we need to calculate the sum to infinity of the sequence;

S∞ = a/1-r where;

a is the first term = 8

r is the common ratio

r = \frac{4.8}{8} = \frac{2.88}{4.8}\\r =  0.6

Substitute into the formula;

S∞ = a/1-r

S∞ = 8/1-0.6

S∞ = 8/0.4

S∞ = 20feet

Hence the total distance traveled by the ball is 20feet

8 0
3 years ago
Help!!!! Which number line shows the solution to 6 + (−6)?
fomenos

Answer: Hi!

The solution to positive 6 and -6 is 0. A negative and a positive of the same absolute value cancel out.

Hope this helps!

3 0
3 years ago
A metal soup can is 4 in. tall and has a diameter of 6 in.
sukhopar [10]

The amount of metal used to make the can = surface area of cylindrical can, which is: D. 42π in².

<h3>What is the Surface Area of a Cylinder?</h3>

A can is a cylinder.

Surface area of a cylinder = 2πrh + 2πr²

Thus:

Amount of metal used to make the can = surface area of the can

r = 6/2 = 3 in.

h = 4 in.

Therefore:

Surface area = 2×π×3×4 + 2×π×3²

Surface area = 24π + 18π

Surface area = 42π in².

Learn more about the surface area of a cylinder on:

brainly.com/question/14657844

4 0
2 years ago
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