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3 years ago

Please help and explain process too. Thank you!!

Mathematics

1 answer:

sergey [27]3 years ago

7 0

The answer is x^2+2x-5

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Sara makes $12 an hour working at the mall. Shae, her sister, just received

nexus9112 [7]

Answer:

x=27

Step-by-step explanation:

let x be the amount of hours she needs to work

she gets 12 dollars per hour, and they already have 100

12x+100=424

12x=324

x=324/12

x=27

5 0

3 years ago

Read 2 more answers

6. Write the following cubes in expanded form:

miss Akunina [59]

Answer:

Step-by-step explanation:

we can use this algebraic identity:

$(a+b)^{3} =a^{3} +b^{3} +3ab(a+b)$

So, $(3a+4b)^{3} =(3a)^{3} +(4b)^{3}+3(3a)(4b)(3a+4b)$

= $(3a+4b)^{3} =27a^{3} +64b^{3} +36ab(3a+4b)$

= $(3a+4b)^{3} =27a^{3} +64b^{3} +108a^{2} b+144ab^{2}$

$(999)^{3}$ = $(1000-1)^{3}$

Now, we can use the following identity:

$(a-b)^{3} =a^{3} -b^{3} -3ab(a-b)$

= $(1000-1)^{3} =1000^{3} -1^{3} -3(1000)(1)(1000-1)\\$

$(1000-1)^{3} =1,000,000,000-1-2,997,000$

$(1000-1)^{3} =997,002,999$

5 0

2 years ago

Divide: 43 Remainder )982

Charra [1.4K]

im using long division

<h2>if you 43÷982 you'd get 0.0438 you could also express 43/982 as a mixed fraction</h2>

982 divided by 43 equals 22 with a reminder of 36.

<h3>brainliest me this is all i can do for you </h3>

4 0

2 years ago

4. Find the equation of the line that goes through the point (1,-1) and has a slope of 5.

frutty [35]

Answer: $y=5x-6$

Step-by-step explanation:

use point-slope form

$(y-y_{1}) =m(x-x_{1})$

plug in given values where m is slope and y1 and x1 are values

$y-(-1)=5(x-1)$

$y+1=5(x-1)$

$y+1=5x-5$

$y=5x-6$

4 0

2 years ago

40 — 15 – 3р) — 4(-р + 5)

iren [92.7K]

If you’re asking for a simplification: 5+p

4 0

3 years ago

Please help and explain process too. Thank you!! ​

Please help and explain process too. Thank you!!