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3 years ago

9

I answered a question correctly and someone deleted my answer without giving me any explanation. I don't know why someone would

do that but its really rude. Like someone is trying to help others and you are deleting their answers. What is this??

2 answers:

Vesnalui [34]3 years ago

6 0

Answer:

This has happened to me more than you can count. Usually it's because of brainly's policy. If the question or answer is not academically related, or you copied from another source, they'll most likely take it down. But I understand where you're coming from. Sometimes they take it down for no reason! I don't know why they do this, but I am not a big fan of it >:((

Vera_Pavlovna [14]3 years ago

4 0

I hope this snake makes you feel better (óuò)

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Height is 2ft. More than its width. If the total area is 99ft squared , determine the dimensions of the painting.

lesantik [10]

Answer: $9\times 11\ ft^2$

Step-by-step explanation:

Given

Height is $2\ ft$ more than its width

Suppose the width is $x$ . So, height becomes $x+2$

Area of the painting is $99\ ft^2$

Area is the product of width and height

$\therefore 99=x(x+2)\\\Rightarrow 99=x^2+2x\\\Rightarrow x^2+2x-99=0\\\Rightarrow x^2+11x-9x-99=0\\\Rightarrow (x+11)(x-9)=0\\\Rightarrow x=-11,9$

Neglect the negative values

$\text{Width =}9\ ft\\\text{height =}9+2=11\ ft$

4 0

3 years ago

Simplify the following expressions. Write your answers as a power. Complete problems 1 through 6.

sertanlavr [38]

The expression is given to be:

$\frac{5^4\cdot5^2}{5^3}$

Recall the multiplication rule of exponent given to be:

$x^a\cdot x^b=x^{a+b}$

Therefore, we can simplify the numerator to be:

$5^4\cdot5^2=5^{4+2}=5^6$

Hence, the expression becomes:

$\Rightarrow\frac{5^6}{5^3}$

Recall the division rule of exponent given to be:

$\frac{x^a}{x^b}=x^{a-b}$

Therefore, the expression becomes:

$\frac{5^6}{5^3}=5^{6-3}=5^3$

Evaluating the answer, we have:

$5^3=125$

Therefore, the answer is:

$\frac{5^4\cdot5^2}{5^3}=125$

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2 years ago

Bluefin tuna are large fish that can weigh 1,500 pounds and swim at speeds of 55 miles per hour. because they are used in sushi,

shtirl [24]

Given exponential function

f(x)= $230 (0.881)^x$

Where x is the number of years

f(x) is the number of tuna in thousands

To find out when number of tuna is 50 thousand , we plug in 50 for f(x) and solve for x

$50 = 230(0.881)^x$

Divide by 230 on both sides

$\frac{5}{23} = (0.881)^x$

Take ln on both sides

$ln(\frac{5}{23}) = ln(0.881)^x$

$ln(\frac{5}{23}) = x ln(0.881)$

Divide by ln(0.881) on both sides

x = $\frac{ln(\frac{5}{23})}{ln(0.881)}$

x= 12.04

Year = 1974 + 12.04 = 1986

so in 1986 there will be 50 thousand tuna.

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3 years ago

How many solutions does -(9x+12)=-8x-(x+3) have

Viktor [21]

-(9x+12)=-8x-(x+3)
-9x-12= -8x-x-3
-9x+9x=9
-9

if u look at the eq for x it has no value. but if u r asking a solution for a eq then it is -9

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3 years ago

K2+11k+30=(k+5)(k+ )

koban [17]

K²+11k+30
(k+5)(k+6)
k=-5,-6

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4 years ago