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2 years ago

20. Solve for x when 18x = 2/3 Provide your answer as a fraction. please do not do website

1 answer:

3 0

18x/18 = 2/3 • 18
Flip reciprocal of 18 which is 1/18 so it would be 2/3 • 1/18 the 2 and 18 can be simplified when cross multiples so it would then be 1/3 • 1/9 which is x=1/27

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A contractor estimated that one of his two brick layers would take 9 hours to build a certain wall and the other 10 hours. Howev

Dmitry [639]

Answer:

900

Step-by-step explanation:

Assume x brick

X*(1／9+1/10）一 10=X/5

X(19/90-1/5)=10

X*(1/90)=10

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6 0

2 years ago

How many roots does this has? x^2+(2√5x)+2x=-10 find Discriminant

Alexxandr [17]

Given:

The equation is

$x^2+(2\sqrt{5})+2x=-10$

To find:

The number of roots and discriminant of the given equation.

Solution:

We have,

$x^2+(2\sqrt{5})x+2x=-10$

The highest degree of given equation is 2. So, the number of roots is also 2.

It can be written as

$x^2+(2\sqrt{5}+2)x+10=0$

Here, $a=1, b=(2\sqrt{5}+2), c=10$ .

Discriminant of the given equation is

$D=b^2-4ac$

$D=(2\sqrt{5}+2)^2-4(1)(10)$

$D=20+8\sqrt{5}+4-40$

$D=8\sqrt{5}-16$

$D\approx 1.89>0$

Since discriminant is $8\sqrt{5}-16\approx 1.89$ , which is greater than 0, therefore, the given equation has two distinct real roots.

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2 years ago

Linda, Tony, and deon have a total of $99 in their wallets. Tony's has 4 times what deon has. Linda has $9 more than Deon. How m

Westkost [7]

Answer:its 9 just ook the tsest

Step-by-step explanation:

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2 years ago

Read 2 more answers

What is the solution to this equation: X+7=-8

Brilliant_brown [7]

Answer:

$\boxed {x = -15}$

Step-by-step explanation:

Solve for the value of $x$ :

$x + 7 = -8$

-Subtract both sides by $7$ :

$x + 7 - 7 = -8 - 7$

$\boxed {x = -15}$

So, the value of $x$ is $-15$ .

3 0

2 years ago

3. If 2p + q = 11 and p + 2q = 13, then p+q= (A) 6 (B) 8 (C) 9 (D) 12 (E) 18

frozen [14]

Answer:
(C) 9

Step by step:
11-2=9 and it’s asking for both p and q combined so no need to worry about that

8 0

2 years ago

Read 2 more answers

20. Solve for x when 18x = 2/3 Provide your answer as a fraction. please do not do website​

20. Solve for x when 18x = 2/3 Provide your answer as a fraction. please do not do website