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3 years ago

11

Alex thinks of a number. he squares it, then takes away five .Next multiplies it by 4 ,takes away seven, divides it by three ,an

d finally adds six his answer is nine what number did he start with

2 answers:

ICE Princess25 [194]3 years ago

6 0

Answer:

3

Step-by-step explanation:

start with the ending answer and go backwards

kykrilka [37]3 years ago

5 0

Answer:

3.

Step-by-step explanation:

.

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Elden [556K]

$x {}^{2} + 5x + 19 \: is \: right \: answer$

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4 years ago

HELP MEH PLZ IT MAY BE SIMPLE BUT IM DUMB

shepuryov [24]

To find this, simply take the largest value of the set and subtract it by the smallest value of the set. In set one, you do 24-13 to get 11
In the second set, you do 95-68 to get 27
Thus, set two has a wider spread and a range of 27, with an answer choice of D
Hope this helps!

4 0

3 years ago

The cost of a plumbing repair is given by the equation y=45x+30, where x is the number of hours the repair takes and y is the to

arlik [135]

First you subtract the 30 from 300 and than 270/45 and your answer will be A. 6

6 0

3 years ago

A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed

Olegator [25]

Answer:

The length of shadow decrease at 0.48 m/s.

Step-by-step explanation:

The distance of man from building = x

Thus initially, x = 12

It is given that dx/dt= -1.3 m/s

Let the shadow height = Y

Now solve for the $dy/dt$ when x=4

from the diagram (triangle) it can be seen similar triangles with similar base/height ratios.

$\frac{2}{12-x} = \frac{y}{12} \\Y = \frac{24}{12 - x} \\ \frac{dy}{dt} = \frac{24}{(12-x)^{2}} \times \frac{dx}{dt} \\at x=4, dy/dt \ becomes: \\\frac{24}{(12-4)^2} \times -1.3 \\= -0.48 m/s$

8 0

4 years ago

A water sprinkler sends water out in a circular pattern. How many feet away from the sprinkler can it spread water if the area f

myrzilka [38]

Answer:

The sprinkler can spread water 18 feet away.

Step-by-step explanation:

We are given the following in the question:

Area formed by watering pattern = 1,017.36 square feet

We have to find the how far the sprinkler spread the water.

The sprinkler covers a circular area. We need to find the radius of this circular area to find the how far the sprinkler spread the water.

Area of circle =

$A = \pi r^2$

where r is the radius of the circle.

Putting values, we get,

$1017.36 = 3.14 r^2\\\\r^2 = \dfrac{1017.36}{3.14}\\\\r^2 = 324\\r = \sqrt{324} = 18\text{ feet}$

Thus, the sprinkler can spread water 18 feet away.

6 0

4 years ago

Read 2 more answers