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snow_lady [41]
3 years ago
15

Will give brainliest if correct.

Mathematics
1 answer:
andrey2020 [161]3 years ago
7 0

Answer:

$46+$7 if im reading it correctly

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Find the solutions to the equation below 30x^2-28x+6 =0
Naddik [55]

For this case, we have the following equation of the second degree:

30x ^ 2-28x + 6 = 0

If we divide between 2 on both sides of the equation, we will have:

15x ^ 2-14x + 3 = 0

Where:

a = 15\\b = -14\\c = 3

The solutions will come from:

x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}

Substituting:

x = \frac {- (- 14) \pm \sqrt {(- 14) ^ 2-4 (15) (3)}} {2 (15)}\\x = \frac {14 \pm \sqrt {196-180}} {30}\\x = \frac {14 \pm \sqrt {16}} {30}\\x = \frac {14 \pm4} {30}

So, we have:

x_ {1} = \frac{14 + 4} {30} = \frac {18} {30} = \frac {18} {30} = \frac {3} {5}\\x_ {2} = \frac {14-4} {30} = \frac {10} {30} = \frac {1} {3}\\

Answer:

x_ {1} = \frac {3} {5}\\x_ {2} = \frac {1} {3}

Option A

Option E

6 0
3 years ago
Read 2 more answers
Please help I don't understand this very well<br>*picture*​
Elenna [48]

Answer:

The inequality is 9 less than and equal to 5

The marked area on the line is numbers all below 5 which covers the less than and since it stop directly at 5 it's going to be equal to that as well

8 0
3 years ago
Read 2 more answers
(1) a) 5270 cl= ? dal
Ivanshal [37]

Answer:

Check below

Step-by-step explanation:

1) These metric volume units can be easily converted by dividing or multiplying by 10 and its multiple. Like this: each step up on the ladder multiply by 10. Each step down divide by 10

a)5270 \:cl=527\:dl\\b)kl=5.3 \times 10=530 hl\\c)58000ml=5.8 dal =(\frac{58000}{10000})\\d)0.39 dal=3.9 l\\e)7.8 dal=780 dl\\f)57.2 ml=5.72 cl.

2) When it comes to area, the "ladder scheme" remains valid but now we'll multiply or divide by

10^3

Bear in mind these useful relations:

1litre =\frac{1}{10^3}m^{3}

1 cm^{3} =1 ml

a) 3.7 l=3700 cm^{3}\\b)29.6 dm^{3}\\29.6 dm^{3} \rightarrow 29.6\times10^{3} cm^3=29.6\times10^{3} ml = 29.6\times10^{2} cl \:or\:2960 cl\\c)8.1l=8100 cm^{3}\\d)5l=\frac{5}{10^{-3}} m^{3}\\e)5.2 cl=52ml=52 cm^{3}=52\times10^{3}=52000 \:mm^{3}\\f)375 ml=375 cm^{3}\\g) 1300 cm^{3}=1300 ml=13 dl\\h) 8.6 ml= 8.6 cm^{3}\times\: 10^{3}=8600 mm^{3}\\i) 51.8\times 10^{11} l \rightarrow 51.8\times 10^{-11}km^{3}

6 0
3 years ago
Find 3x-y-3z x=-2 y=1 and z=-2
mrs_skeptik [129]
Just fill in the problem... 3*-2-1-3*-2
8 0
3 years ago
Read 2 more answers
Which of the data sets below has a mean of 32? Select all that apply.
Akimi4 [234]

Answer:

B is the correct answer

Step-by-step explanation: When you add 18+54+24=96 divide 96 by 3 and its 32!

5 0
3 years ago
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