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Lorico [155]
3 years ago
6

Ava grades 10 ½ tests in ¾ of an hour. At this rate, how many tests does she grade each hour?

Mathematics
2 answers:
Cloud [144]3 years ago
5 0

Answer:

14

Step-by-step explanation:

if you set it up as a porportion, 10.5/.75, and you find that in order to make .75 equal to one, you multiply by 1.3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333...

10.5*1.3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333...=14

Hope I helped.  

dimulka [17.4K]3 years ago
4 0

Answer:

14 tests

Step-by-step explanation:

10 1/2 divided by 3/4 s 14 tests

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m_a_m_a [10]
B 6.44 because 6.4 is equal to 6.40 and in between 6.40 and 6.60 there is 6.44.

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Alexis cell phone company charges her $35 a month for phone service plus $0.40 for each text message. How many text message does
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Step-by-step explanation:

$72 - $35 = 37

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Write a polynomial function $f$ of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros.
olganol [36]

Answer:

f(x) = x^{3} + 4x^{2} -7x^{} -10^{}

Step-by-step explanation:

The zeros of the polynomial function are given us as -5,-1,2

If the zeros of a polynomial function are α,β,ω, the polynomial function can be obtained using the expression below:

f(x) = (x - α)(x - β)(x - ω)

where α = -5, β = -1, and ω = 2

f(x)=(x-(-5) )(x -(-1))(x - 2) = (x+5)(x+1)(x-2)\\\\f(x)=(x+5)(x^{2} -2x + x -2) = (x+5)(x^{2}  -x-2)\\\\f(x)=x(x^{2}  -x-2)+5(x^{2}  -x-2)\\\\f(x)= x^{3} - x^{2} -2x + 5x^{2} - 5x - 10\\\\f(x)= x^{3} + 4x^{2} -7x - 10

<em>NB: To arrive at the answer, expand the brackets and after expansion, collect like terms to obtain the final answer</em>

4 0
3 years ago
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