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2 years ago

13

The average weight of an adult blue whale is 365.000 pounds. Which expression represents this weight in scientific notation? A)

365 10 B) 3.65 10 (3.65 10 (D) 3.65 10

1 answer:

Elina [12.6K]2 years ago

7 0

The answer is 3.65 x 10^5

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Chelsea shows her work in finding the solution to 4x−5=2+3(x−3). After checking her answer in the original equation, she found t

Ainat [17]

quita los paréntesis: 4x-5=2+3(x-3) multiplica paréntesis X3, elimina el paréntesis: 4x-5=2+3x-9 calcule: 4x-5= -7+3x mueve los términos y te quedará así: 4x-3x-5=-7

agrupe los términos semejantes: x=-7+5

calcular la suma, y el resultado final sería: x= -2

Step-by-step explanation:

espero te sirva

8 0

3 years ago

Read 2 more answers

What is the value for x

Step2247 [10]

this is an isosceles triangle... meaning that the two base angles will be equal.

180 - 38 = 142

142 / 2 = 71

x = 71

6 0

3 years ago

Someone please HELP!?

jeka94

A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.

For example

$x^{-2}=\frac{1}{x^2}$

or

$( \frac{2}{5} )^{-4}=( \frac{5}{2} )^4$

***************************************
$(8r^{-5})^{-3}$

$(8* \frac{1}{r^5} )^{-3} \\\\( \frac{8}{r^5} )^{-3}
 \\ \\ ( \frac{r^5}{8} )^3
\\\\ \mathrm{Apply\:exponent\:rule}:\quad *\left(\frac{a}{b}\right)^c=\frac{a^c}{b^c} \ \ \ \ \ \ \ \ \ \ \ \ *(a^b)^c=a^{bc}
 \\\\( \frac{r^{15}}{8^3} )
\\\\( \frac{r^{15}}{512} )$

The answer is "D"

7 0

3 years ago

PLEASE HELP ME!!!!!!!!!!! WILL GIVE BRAINLIEST AND RATING!!!!!!!!!!!!

Kitty [74]

This will give us
$2n-1-(-7n+2)=2n-1+7n-2=9n-3$
That is the second option.
Please mark me as brainliest.

4 0

3 years ago

Solve the equation 4s2+32s=60 by completing the square

lord [1]

Answer:

s = -4 ± √31

Step-by-step explanation:

Given 4 $s^{2}$ + 32s = 60

divide by 4 throughout

$s^{2} + 8s = 15\\s^{2} + 8s + (\frac{8}{2}) ^{2} = 15 + (\frac{8}{2}) ^{2}$

$(s + 4)^{2} = 31\\s + 4 = \sqrt{31}$

s = -4 ± √31

7 0

3 years ago