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3 years ago

2.8 -3x =12.1 −6x what's x

Mathematics

2 answers:

Kipish [7]3 years ago

6 0

X= 3.1 is the answer

hodyreva [135]3 years ago

4 0

The answer is X=3.1!

You might be interested in

The product of 3 consecutive even integers is equal to the cube of the first plus the square of the second plus twice the square

algol [13]

Answer:

6, 8 and 10 and -2, 0, 2

There are two roots x = -2 and 6,

but the since I don't believe 0 is an even number the answer is 6, 8 and 10

I was incorrect according to G0ggle zero is an even number so another answer is -2, 0, 2

Step-by-step explanation:

read the question and convert the English to mathematics

x, y and z even consecutive number

y = x+2

z = y+2 = x+4

and

xyz = x³ + y² + 2z² substitiute x terms in for y and z

x(x+2)(x+4) = x³ + (x+2)² + 2(x+4)² solve for x by graphing on DEMOS

x = -2, 6 solved algebraically below

x = -2 y=0 z=2

x = 6 y=8 z=10

Checked both answers

xyz = x³ + y² + 2z²

-2(0)2 = -8 + 0 + 8 when x = -2

0 = 0

and

6(8)(10) = 6³ + 8² +2(10)² when x = 6

480 = 216+64+200

= 480

x(x+2)(x+4) = x³ + (x+2)² + 2(x+4)² solved algebraically

(x²+2x)(x+4) = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + 3x² + 20x + 36

3x² - 12x - 36 = 0 factor out the 3

3[x² - 4x - 12] = 0

3(x+2)(x-6) = 0 x = -2 and -12

6 0

3 years ago

Choose the correct vortex for the following quadratic function

Black_prince [1.1K]

Answer:

Step-by-step explanation:

f(x)=x^2-4x+3

x coordinate: -b/2a

-(-4)/2(1)=4/2=2

and to find the y coordinate just plug in the value of -b/2a for x and solve for y

4 0

3 years ago

9s+3=57<br> Z/5+3=-35<br> 7(c-12)=-21

Fudgin [204]

The answer you're looking for is s=6.
by substitution you'd get 6.

4 0

3 years ago

Only some of the students in the Level 1 swim lessons move up to Level 2 at the end of

larisa86 [58]

The list that orders the fractions from least to greatest is:

$\frac{7}{12}, \frac{2}{3}, \frac{17}{24}, \frac{3}{4}$

<h3>Ordering of fractions</h3>

To order the fractions from least to greatest, we have to realize their conversion to decimal.

To realize the conversion, the numerator is divided by the denominator, as ordering decimal numbers are easier than fractions.

Hence, the fractions converted to decimal are:

$\frac{2}{3} = 0.6667$ .

$\frac{7}{12} = 0.5833$ .

$\frac{17}{24} = 0.7083$

$\frac{3}{4} = 0.75$

Hence, the list from least to greatest is, according to the results of the conversions:

$\frac{7}{12}, \frac{2}{3}, \frac{17}{24}, \frac{3}{4}$

To learn more about ordering of fractions, you can take a look at brainly.com/question/26139168

7 0

3 years ago

This is for Pre-Calc, so please use Pre-Calc terms. You do not have to answer number 1. I have it done already. I need help ASAP

Dominik [7]

Answer:

Step-by-step explanation:

a1=2a7 because the square route of (Tan) is 49 so it 2a7tan49 fa10 the answer is b

6 0

3 years ago