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3 years ago

Simplify 4(x + 5) - 10x + 4/5

Mathematics

1 answer:

Bumek [7]3 years ago

4 0

Answer:

-6x+104/5

Step-by-step explanation:

Distribute: (4)(x)+(4)(5)+-10x+4/5 = 4x+20+ -10x + 4/5 combine like terms: (4x+-10x) + (20+4/5) simplify: -6x 104/5 answer: -6x+104/5

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Find the work done in winding up a 175 ft cable that weighs 3 lb/ft.

nignag [31]

Answer:

$work \ done= 45937.5$

Step-by-step explanation:

Work done is given by

$work \ done=\int_a^b w(d-x) \ dx$ , where d = length of cable and w = weight of cable.

Here, d = 175 ft and w = 3 lb/ft

Now, $work \ done=\int_0^{175} 3(175-x) \ dx$

$work \ done= 3\left [175x-\frac{x^2}{2} \right ]_0^{175}$

$work \ done= 3\left [175^2-\frac{175^2}{2} \right ]$

$work \ done= 3\cdot \frac{175^2}{2}$

$work \ done= 45937.5$

8 0

3 years ago

What is the measure of z?

Lady bird [3.3K]

Answer:

The missing angle is 24 degrees

Step-by-step explanation:

The two angles form a straight line so they add to 180 degrees

x+156 = 180

Subtract 156 from each side

x+156-156 = 180- 156

x = 24

The missing angle is 24 degrees

3 0

2 years ago

On friday morning, the tempurature dropped 2 degrees per hour for 4 hours. Write and solve and equation to find the total number

sukhopar [10]

Minus 2 degrees every hour
there are 4 hours
d=degrees dropped
- 2 x 4 = d

4 0

3 years ago

Read 2 more answers

At the beginning of the month, Sheryl had a balance of $120 in her checking account. She then made a purchase for $80, using her

kolezko [41]

Answer:

$80

Step-by-step explanation:

4 0

3 years ago

Create a quadratic trinomial with zeros equal to 4 and 5

Ilya [14]

Answer:

x^2 - 9x + 20

Step-by-step explanation:

(x - 4)(x - 5) (have to do the opposite for it to be positive)

FOIL method: X x X = x^2

-5 x X = -5x

-4 x X = -4x

x^2 - 5x - 4x + 20

-5 - 4 = -9 so...

x^2 - 9x +20 is the answer

5 0

3 years ago