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Angelina_Jolie [31]
3 years ago
15

A school district needs 3 teachers for every 70 students. They expect to have 14,700 in the district next year. At this time the

y have 612 teachers. How many more teachers are needed.
Mathematics
1 answer:
VLD [36.1K]3 years ago
3 0

Answer:

18

Step-by-step explanation:

We can use a proportion to find out the number of teachers that are needed.

3/70 = x/14,700

70x = 3 * 14,700

70x = 44,100

x = 630

630 teachers are needed altogether. Since there are already 612 teachers, the number of more teachers who are needed is the difference between 630 and 612.

630 - 612 = 18

Answer: 18

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Write the equation of a line perpendicular to the line: y=−5/2x+4 that goes through the point (-6, 0).
NikAS [45]

Step-by-step explanation:

the line given slope = x coefficient = -5/2

Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

new slope = 2/5

line equation formula = y = mx+ b

m = slope

y= 2/5x + b

from the point given (-6,0)

x = -6

y = 0

0= -12/5 + b

b = +12/5

line equation =

y =  \frac{2}{5} x +  \frac{12}{5}

3 0
3 years ago
Find an equation with a solution of x = 2 of multiplicity 1 , and a solution of x = − 1 of multiplicity 2 .
luda_lava [24]

We want to find an equation for the given solutions and the multiplicity of each solution.

The equation is:

0 = (x - 2)*(x + 1)^2

First, assume that we have a given equation and we know that we have solutions {x₁, x₂, ..., xₙ}, each one with multiplicity {m₁, ..., mₙ}.

The equation, of a polynomial that meets these requirements, is given by:

0 = A*(x - x_1)^{m_1}*...*(x - x_n)^{m_n}

Where A is the leading coefficient and can be any real number.

Now that we know that, here we have the solutions:

  • x = 2 with multiplicity 2
  • x = -1 with multiplicity 2

We don't have information about the leading coefficient, so we assume it is equal to 1.

Then the equation is:

0 = (x - 2)*(x + 1)^2

If you want to learn more, you can read:

brainly.com/question/11536910

7 0
3 years ago
Using the dimensions shown, you could create a rectangular prism. Caculate the surface area for the rectangular prism. A 30m2 b
Lisa [10]

Answer:

<em>550ft²</em>

Step-by-step explanation:

<em>Since we are not given the dimension of the rectangular prism. Let us assume;</em>

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Width of the rectangular base W = 15ft

height of the prism H = 5ft

Total surface area of the prism = 2(LW + WH + LH)

Substitute the given values

Total surface area of the prism = 2{10*15 + 15*5 + 10*5}

Total surface area of the prism = 2(150+75+50)

Total surface area of the prism = 2(275)

<em>Total surface area of the prism = 550ft²</em>

6 0
3 years ago
....................................
Ronch [10]

Answer:

................................

Step-by-step explanation:

.................................................................

7 0
3 years ago
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larisa86 [58]
=3*5*7 (xyz)
=15*7 xyz
=105xyz
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3 years ago
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