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3 years ago

7

If 10/4 = 14/x what is x?

2 answers:

docker41 [41]3 years ago

7 0

Is there answer choices? Because if you do 10/4=2.5 and if you do 14/2.5 you get 5.6

cluponka [151]3 years ago

6 0

Answer: 5.6

Explanation:

1) set the proportion:

10        14
----- =   -----
4           x

2) clear the unknown, x

10x = 14(4)

=> 10x = 56

=> x = 56 / 10

=> x = 5.6

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Akimi4 [234]

The value of m must be 4 and the value of b must NOT be -3.

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3 years ago

Write <br> –1.2 as a mixed number.

Luden [163]

Answer:

-1 1/5

Step-by-step explanation: cause calculator

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4 years ago

Suppose that the functions r and s are defined for all real numbers x as follows. =rx−x5 =sx+2x3 write the expressions for ·rsx

PolarNik [594]

Although the question's print is not clear, to the best of my knowledge, as I can see, We are given that:

$r(x)=-x^5$ and $s(x)=2x^3$

No, we know that, by definition:

$(r.s)(x)=r(x)\times s(x)$

$\therefore (r.s)(x)=-x^5\times 2x^3=-2x^8$

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8 0

3 years ago

*FIRST ANSWER GETS BRAINLIEST*

svet-max [94.6K]

The other solution to the equation is -3.

Step-by-step explanation:

Given equation is;

5x²+bx+12=0

One solution is -4/5

We will put this solution in Eqn to get the value of b first,

$5(\frac{-4}{5})^2+b(\frac{-4}{5})+12=0\\5(\frac{16}{25})+(\frac{-4b}{5})+12=0\\\frac{16}{5}-\frac{-4b}{5}=-12\\$

Multiplying each term by 5

$5*(\frac{16}{5})-\frac{-4b}{5}*5=-12*5\\16-4b=-60\\-4b=-60-16\\-4b=-76$

Dividing both sides by -4

$\frac{-4b}{-4}=\frac{-76}{-4}\\b=19$

Putting b=19 in given Eqn

5x²+19x+12=0

Here,

a=5 , b=19 , c=12

Using quadratic formula,

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}\\x=\frac{-(19)\±\sqrt{(19)^2-4(5)(12)}}{2(5)}\\\\x=\frac{-19\±\sqrt{361-240}}{10}\\\\x=\frac{-19\±11}{10}\\$

Either, or,

$x=\frac{-19+11}{10},\ \ \ \ \ \ x=\frac{-19-11}{10}\\x=\frac{-8}{10},\ \ \ \ \ \ \ \ \ x=\frac{-30}{10}\\x=\frac{-4}{5},\ \ \ \ \ \ \ \ \ \ x= -3$

The other solution to the equation is -3.

Keywords: linear equation, quadratic formula

Learn more about quadratic formula at:

#LearnwithBrainly

6 0

3 years ago

-2.3z = -13.8 <br> I need to show work lol

dsp73

Here are your answers.

it's made by computer.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

6 0

3 years ago

Read 2 more answers