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3 years ago

125.315 to two significant figures

Mathematics

1 answer:

Shalnov [3]3 years ago

3 0

Answer: 130

Step-by-step explanation:

The five rounds up making it 130

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. On a school field trip, the school requires that there are 6 teachers for every 90 students. If 135 students attend the trip h

mr_godi [17]

Answer:

For 135 students , the number of teacher requires is 9

Step-by-step explanation:

Given as :

The number of teacher = 6

The number of student = 90

∵ For 90 students , the number of teacher requires = 6

So , For 1 student , the number of teacher requires = $\frac{6}{90}$

= $\frac{1}{15}$

∴ For 135 student , the number of teacher requires = $\frac{1}{15}$ ×135

Or, For 135 student , the number of teacher requires = $\frac{135}{15}$

So, For 135 student , the number of teacher requires = 9

Hence For 135 students , the number of teacher requires is 9 Answer

5 0

3 years ago

If f(x) = 2x⁴- 3x² - 2x+5 and g(x)= x³ - 2x - 3, find the sum of polynomials f(x) and g(x) and hence state the order of the sum.

Finger [1]

Answer:

2x⁴ + x³ - 3x² - 4x + 2

Step-by-step explanation:

Given functions:

f(x) = 2x⁴ - 3x² - 2x + 5

g(x) = x³ - 2x - 3

Unknown:

Sum of the polynomials = ?

Order of the sum = ?

Solution:

The sum of the polynomial is expressed as;

f(x) + g(x) = 2x⁴ - 3x² - 2x + 5 + x³ - 2x - 3

= 2x⁴ + x³ - 3x² - 2x - 2x + 5 -3

= 2x⁴ + x³ - 3x² - 4x + 2

The order of the sum is the highest power which 4.

This polynomial is of the 4th order.

4 0

3 years ago

If f(x) = x^2 - x, what is f(-3)?

myrzilka [38]

F(-3) = (-3)^2 - (-3) = 9 - (-3) = 9 + 3 = 12

8 0

3 years ago

The triangles are similar.

MrMuchimi

25/5 = 5
and also
15/3 = 5
so
(3x+ 8)/5 = 4
3x + 8 = 20
3x = 12
x = 12/3
x = 4

answer is x = 4

7 0

4 years ago

Read 2 more answers

Of all the Sunny Club members in a particular city, 25% prefer swimming on weekends and 75% prefer swimming on weekdays. It is f

Ivan

P(f | weekend) = p(f & weekend)/p(weekend)
.. = 10%/25%
.. = 2/5 = 0.4

3 0

3 years ago

Read 2 more answers