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3 years ago

5% of x is 15.what is x?help me with this question and ignore the last post I posted?

Mathematics

2 answers:

fomenos3 years ago

7 0

X should be 300
15/x= 0.05
x= 15/0.05= 300
x=300

harina [27]3 years ago

3 0

X = 300

Hope this helped!

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Determine whether the rational root theorem provides a complete list of all roots for the following polynomial functions. f(x) =

IrinaK [193]

Answer:

f(x)=x=± $\frac{\sqrt{25} }{2}$ represents all its roots.

g(x)=x=± $\frac{\sqrt{-25} }{2}$ does not represent roots

because negative number cannot exist in under root

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Step-by-step explanation:

f(x)= $4x^{2}$ -25

to find rational root we will put $4x^{2}$ -25=0

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f(x)=x=± $\frac{\sqrt{25} }{2}$

g(x)= $4x^{2}$ +25

to find rational root we will put $4x^{2}$ +25=0

$4x^{2}$ =-25

$x^{2}$ = $\frac{-25}{4}$

g(x=)x=± $\sqrt{\frac{-25}{4} }$ /

h(x)= $3x^{2}$ -25

to find rational root we will put $3x^{2}$ -25=0

$3x^{2}$ =25

$x^{2}$ = $\frac{25}{3}$

h(x=)x=± $\sqrt{\frac{25}{4} }$

h(x)=± $\sqrt{\frac{25}{3} }$

6 0

3 years ago

Read 2 more answers

Rebecca went swimming yesterday. After a while she had covered one fifth of her intended distance. After swimming six more lengt

kondor19780726 [428]

Answer:

E. 120

Step-by-step explanation:

A. 40

B. 72

C. 80

D. 100

E. 120

Let

x = the intended distance

y = length of the pool

She covers one fifth of her intended distance

Distance covered = 1/5 of x

= x/5

After swimming six more lengths of the pool she had covered one quarter of her intended distance

x/5 + 6y = 1/4 of x

x/5 + 6y = x/4

Collect like terms

6y = x/4 - x/5

6y = 5x - 4x/20

6y = x/20

x = 20 * 6y

= 120y

x = 120y

The intended distance Rebecca wants to cover = 120

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3 years ago

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We have take the amount that she earned and divide it by the hours she worked.

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