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4 years ago

PLEASE HELP!!! I NEED TO SUBMIT BY 12 AM AND I AM STUCK!

Mathematics

1 answer:

Veronika [31]4 years ago

4 0

Hope this helps! I can’t help with the graphing...

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I need help ASAP!!!!!!

topjm [15]

Answer:

1. YES 2. NO

Step-by-step explanation:

1. Since x=0.121212... and the question is asking for 100x, we need to multiply each side by 100. 0.121212... multiplied by 100 is 12.1212... So YES, 100x is still a repeating decimal.

2. 12.121212... minus 0.121212... would just be 12. This is because if we know that all the numbers behind the decimal point is 0.121212 and so on, 12.121212... minus 0.121212... the numbers behind the decimal would cancel out. So we are left with 12. So NO, the answer for 99x is NOT a repeating decimal.

6 0

3 years ago

The price of 600 grams of candy and 1.5 kg of cookies was 4 dollars and 62 cents. What is the price of one kg of cookies if it i

cupoosta [38]

Answer:

The price of the kilogram of cookies is $ 1.8

Step-by-step explanation:

Call x the price of the kilogram of candy and call y the price of kilogram of cookies

Then we know that

$0.600x + 1.5y = 4.62$

We also know that the price of kilogram of cookies is 1.40 dollars cheaper than the kilogram of candy

$y = x-1.40$

We solve this equation for x and then we substitute it in the first equation.

$x = y + 1.40$

$0.60 (y +1.40) + 1.5y = 4.62\\\\0.60y + 1.5y = 4.62 - 0.84\\\\2.1y = 3.78$

$y = \$1.8$

3 0

4 years ago

Plz help

zheka24 [161]

Answer:

Step-by-step explanation:

4 0

3 years ago

CAN YOU GUYS PLEASE HELP ME?!!!!!!

DanielleElmas [232]

Answer:

6) C

$-2r\left(8r+5\right):\quad -16r^2-10r\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac\\=-2r\cdot \:8r+\left(-2r\right)\cdot \:5\\=-2\cdot \:8rr-2\cdot \:5r\\\mathrm{Simplify}\:-2\cdot \:8rr-2\cdot \:5r:\quad -16r^2-10r$

7) B

$4a\left(a^2+7a+4\right):\quad 4a^3+28a^2+16a$

$\mathrm{Distribute\:parentheses}\\=4aa^2+4a\cdot \:7a+4a\cdot \:4\\=4a^2a+4\cdot \:7aa+4\cdot \:4a\\\mathrm{Simplify}\:4a^2a+4\cdot \:7aa+4\cdot \:4a:\quad 4a^3+28a^2+16a$

Hope this helps and have a great day!!!

$Sofia$

6 0

3 years ago

Read 2 more answers

4 and 10 find the greatest common factors of the numbers using prime factorizations. Also please show your work

sammy [17]

4. 10.
1,2,4 1,2,5,10

2 is the greatest common factor.

4 0

3 years ago

Read 2 more answers