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3 years ago

What is the value of x in the proportion below? 57=x21

Mathematics

2 answers:

Rama09 [41]3 years ago

8 0

Answer:

2.71428571429

Step-by-step explanation:

calculator, counted it myself too to check if it's right

2.71428571429

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Yuri [45]3 years ago

5 0

Answer:

x= $\frac{19}{7}$

Step-by-step explanation:

57=x×21

57=21x

21x=57

x= $\frac{19}{7}$

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Three times a number plus twice another is 10, while their sum is 10, Find the numbers

Aleks [24]

$3a+2b=10 \\\\ a+b=10 \\\\ \boxed{a=10-b} \\\\ 3(10-b)+2b=10 \\\\ 30-3b+b=10 \\\\ -b=10-30 \\\\ -b=-20 \\\\ \boxed{b=20} \\\\ a=10-20 \\\\ \boxed{a=-10}$

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4 years ago

4z/7 - 7 = 10 What is z??????

Luda [366]

Answer:

Here is the solution. Hope it helps.

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3 years ago

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in s

r-ruslan [8.4K]

The first thing you should do is to determine all the zeros, and you will have 7, -11, 2 + 6i, 2 - 6i.
After that you have to subtract and (x) from every each zero that you have above, which means
 $7-x, 

 -11-x, 

2 + 6i-x,

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$
And the last step is to multiply them together, and that's all you need!
 $(7-x)(-11-x)(2 + 6i-x)(2 - 6i-x)$
I am pretty sure that everything hase become clear! Regards.

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4 years ago

Task: Population of a Species

Cloud [144]

Answer:

C(t) = 20t

Step-by-step explanation:

The graph of C(t) appears to be linear

The y intercept is 0

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y = mx+b where m is the slope and b is the y intercept

y = 20x+0

y = 20x

C(t) = 20t

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Read 2 more answers

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Step-by-step explanation:

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