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4 years ago

(x+13/2) (x-13/2)=0 how many distinct real solutions does the equation above have

Mathematics

1 answer:

gtnhenbr [62]4 years ago

7 0

Answer:

2 solutions

x = -13/2 x=13/2

Step-by-step explanation:

(x+13/2) (x-13/2)=0

Using the zero product property

x+13/2 = 0 and x-13/2 =0

x = -13/2 x=13/2

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3 years ago

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you exp

julia-pushkina [17]

Answer:

0.17619

Step-by-step explanation:

We solve using z score formula

= z = (x-μ)/σ,

where x is the raw score = 5 accidents

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What proportion of weeks would you expect to have less than 5 accidents?

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4 years ago

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Read 2 more answers

Caroline, Krutika and Natasha share some sweets in the ratio 4:3:3. Caroline gets 9 more sweets than Natasha. How many sweets do

vagabundo [1.1K]

Answer:

Krutika gets 27 sweets

Step-by-step explanation:

Let

x ---> number of sweets that Caroline gets

y ---> number of sweets that Krutika gets

z ---> number of sweets that Natasha gets

we know that

$x:y:z=4:3:3$

$\frac{x}{y}=\frac{4}{3}$

$x=\frac{4}{3}y$ ----> equation A

$\frac{x}{z}=\frac{4}{3}$

$x=\frac{4}{3}z$ ----> equation B

$y=z$ ---> equation C

Caroline gets 9 more sweets than Natasha

$x=z+9$ ---> equation D

substitute equation D in equation B

$z+9=\frac{4}{3}z$

solve for z

$\frac{4}{3}z-z=9$

$\frac{1}{3}z=9\\z=27\ sweets$

therefore

Krutika gets 27 sweets

3 0

3 years ago