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Vadim26 [7]
3 years ago
7

2/5x+10=30 a- x=100 b-x=12 c-x=50 d-x=16

Mathematics
2 answers:
garri49 [273]3 years ago
6 0

Answer:

C: x=50

Step-by-step explanation:

Sever21 [200]3 years ago
3 0

Answer:

x=50

Step-by-step explanation:

x in (-oo:+oo)

(2/5)*x+10 = 30 // - 30

(2/5)*x-30+10 = 0

2/5*x-20 = 0 // + 20

2/5*x = 20 // : 2/5

x = 20/2/5

x = 50

x = 50

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svetlana [45]
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4 0
3 years ago
The equation of the circle with center (3, -2) and radius 7 is<br> (X blank) + (y blank)
deff fn [24]

Answer:

Step-by-step explanation:

(x-3)^2 + (y+2)^2 = 7^2

5 0
3 years ago
Read 2 more answers
NO LINKS!!!
AlekseyPX

Answer:

  a.  2, 3, 6

  b.  a/b × c = 1

  c.  a = 2, b = 6, c = 3  or  a = 3, b = 6, c = 2

Step-by-step explanation:

Apparently, Erica wants to multiply a fraction by a whole number to get a result of 1. That means the fraction is the multiplicative inverse of the whole number.

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<h3>a.</h3>

There is only one set of three unique numbers among those given such that one of them is a composite number with the other two as factors. Erica must choose 2, 3, and 6.

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<h3>b. </h3>

If the three numbers are represented by a, b, c, Erica wants ...

  a/b × c = 1

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<h3>c.</h3>

Multiplying the equation by b gives ...

  ac = b

Among the numbers 1–6, only 2×3 = 6 will satisfy this equation. Erica can choose either of ...

  a = 2, b = 6, c = 3   ⇒   (2/6)×3 = 1

  a = 3, b = 6, c = 2   ⇒   (3/6)×2 = 1

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<h3>d.</h3>

No scoring information is provided.

3 0
2 years ago
Please answer this for 15 points :) &lt;333
lions [1.4K]

Answer:

A.

Elena can run 3 miles per hour.

Step-by-step explanation:

Given that:

a circular running track = 1/5 mile

On this track, Elena runs completing each of the laps in 1/15 of an hour

We are to find Elena running speed.

It implies that the distance of Elena = \dfrac{1}{5}

Time to run each lap = \dfrac{1}{15} \ of \ an \ hour

Speed is the amount of distance covered in a specified period of time.

Recall that the formula for calculating speed is:

Speed = \dfrac{distance}{time}

Speed = \dfrac{\dfrac{1}{5}}{\dfrac{1}{15}}

Speed ={\dfrac{1}{5}\times \dfrac{15}{1}

Speed =  3miles / hour

As such, Elena can run 3 miles each hour.

3 0
3 years ago
15!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!points .Hence, find the size of each interior angle of a regular hexagon.
marusya05 [52]
120 degrees because the sum of the interior angles is 720 degrees and 720 / 6 = 120
3 0
3 years ago
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