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3 years ago

I'M GIVING BRAINLIEST TO WHOEVER ANSWERS ALL OF THE QUESTIONS CORRECTLY! PLEASE HURRY! :D

Mathematics

2 answers:

V125BC [204]3 years ago

6 0

Answer:

Step-by-step explanation:

8. 7.5 Goes up by 2.5.

9. 7.3 Goes down by 2.1

10. 116/3

lisabon 2012 [21]3 years ago

3 0

Answer:

8- 7.5

9-7.3

10-38 $\frac{2}{3}$

Step-by-step explanation:

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Blake has b baseball cards. His aunt gave him more cards, increasing his total number of cards by 25%. Which expression represen

Naily [24]

Answer:

Blake's total number of cards now: 1.25b

Step-by-step explanation:

Total number of cards now would be equal to 25% increase from b.

<em>This means we INCREASE b by 25% OF b.</em>

<em />

What is 25% of b???

$\frac{25}{100}*b\\=0.25b$

Now we need to ADD this to original amount, b.

So, $b+0.25b=1.25b$

6 0

3 years ago

Find the limit (enter 'DNE' if the limit does not exist)

vaieri [72.5K]

Answer:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{-2x^2-6y^2+1}+1\right)=2$

Step-by-step explanation:

We need to first simplify the expression using rationalization(i.e. if a square root term exists in the denominator, then multiply and divide the whole expression by the denominator(but the change the sign of its middle term))

here, we need to find:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\dfrac{-2x^2-6y^2}{\sqrt{-2x^2-6y^2+1}-1}\right)$

first we'll rationalize our expression:

$\dfrac{-2x^2-6y^2}{\sqrt{-2x^2-6y^2+1}-1}\left(\dfrac{\sqrt{-2x^2-6y^2+1}+1}{\sqrt{-2x^2-6y^2+1}+1}\right)$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{(\sqrt{-2x^2-6y^2+1}+1)^2-(1)^2}$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{-2x^2-6y^2+1-1}$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{-(2x^2+6y^2)}$

$\sqrt{-2x^2-6y^2+1}+1$

this is our simplified expression, now we can apply our limits:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{-2x^2-6y^2+1}+1\right)$

$\sqrt{-2(0)^2-6(0)^2+1}+1$

$1+1$

$2$

the limit does exists and it is 2.

5 0

3 years ago

Dwayne starts assembling marketing packets at 11 a.m. Ashlie starts assembling marketing packets at 11:30 a.m. and assembles at

musickatia [10]

Answer:

Option A = 75 is the best option

Step-by-step explanation:

It took Ashlie 2.5 hours (11:30 am - 2pm) to assemble the marketing packets

Rate = Number of jobs done/Time taken = 90 packages/hr

Number of jobs done = Rate * Time taken = 90 * 2.5 = 225 packages.

Dwayne has assembled the same number of packages = 225 (as reported in the question),

It took Ashlie 2.5 hours (11 am - 2pm)

Then, his work rate is calculated as: Number of jobs done/Time taken = 225 packages/3 hours = 75

Thus, option A = 75 is the best option

4 0

3 years ago

A game box for video games is shaped like a rectangular prism what is the surface area of the game box

tiny-mole [99]

Jesus will bless ur soul and THAT is a promise

5 0

4 years ago

Kendra is building a back yard fence two of the sides are 43ft, and the other two sides are 57ft. How much fencing does Kendra n

wel

Answer: 200ft

Step-by-step explanation:

43+43+57+57=200

7 0

3 years ago

Read 2 more answers