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3 years ago

How do I solve 1/2(x+4-21x-5)=46

Mathematics

2 answers:

AnnZ [28]3 years ago

8 0

Answer:

x=-91/1840

Step-by-step explanation:

Firstly deal with the bracket

2(x+4-21x-5)

2(x-21x+4-5)

2(-20x-1)

-40x-2

Back to the question

1/-40x-2=46

Cross multiply

46(-40x-2)=1

-1840x-92=1

Add 92 to both sides

-1840x=91

Divide both sides by-1840

x=-91/1840

Julli [10]3 years ago

7 0

Answer:

x=-4.65

Step-by-step explanation:

1/2(x+4-21x-5)=46

1/2(-20x-1)=46

1/2(-20x)+1/2(-1)=46

1/2(-20x)-.5=46

1/2(-20x)+.5=46

.5(-20x)=46.5/.5

-20x=93

x=-4.65

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Can someone check if this is right? simple probability but i am unsure if my answer

Harrizon [31]

I think It is correct tbh

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3 years ago

Find the indicated limit, if it exists. (2 points) limit of f of x as x approaches 5 where f of x equals 5 minus x when x is les

Tamiku [17]

It looks like we have

$f(x)=\begin{cases}5-x&\text{for }x5\end{cases}$

and we want to find $\lim\limits_{x\to5}f(x)$ .

Since $x$ is approaching 5, we don't care about the value of $f(x)$ when $x=5$ .

We do care about how $f(x)$ behaves to either side of $x=5$ . If $x\to5$ from below, then $f(x)=5-x$ , so that

$\displaystyle\lim_{x\to5^-}f(x)=\lim_{x\to5}(5-x)=5-5=0$

On the other hand, if $x\to5$ from above, then $f(x)=x+3$ , so that

$\displaystyle\lim_{x\to5^+}f(x)=\lim_{x\to5}(x+3)=5+3=8$

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4 years ago

Please help me ASAP and explain or no brainlist

serg [7]

Answer:

its 1/3

Step-by-step explanation:

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3 years ago

Help find the answer to this question

marusya05 [52]

First, find the area of the entire traingle using the formula bh/2.
18*9/2=81 cm^2
Then subtract the area of the smaller triangle within the larger one (white triangle). It has the same base but a height of only 4.
18*4/2=36 cm^2
81-36=45
Final answer: 45 cm^2

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3 years ago

The area of a trampoline is 49 pi sqared. What's the diameter of the trampoline?

Flauer [41]

Answer:

The diameter is 14

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know the area is 49 pi

49 pi = pi r^2

Divide each side by pi

49 pi/ pi = pi r^2/pi

49 = r^2

Take the square root of each side

sqrt(49) = sqrt(r^2)

7 =r

We want the diameter

d = 2r

d = 2*7

d = 14

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3 years ago