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3 years ago

8x + 17- 2x -9 =?? ,

Mathematics

1 answer:

levacccp [35]3 years ago

5 0

Answer:

Step-by-step explanation:

So for the first one 8x is similar to -2x so you put them together and get 6x and posiative 17 and -9 are similar so you put those together and get 8 so the first eqaution is 6x+8 and for the second one 7y and 10y are similar also know as like terms so you put those together and get -3y becuase the seven is before the 10y and so the equation is -3y+11

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A coin is tossed then a number 1-10 is chosen at random what is the probability of getting heads then a number less than 4

Darya [45]

The probability of getting heads on a coin toss is 0.5
The probability of choosing a number less than four is 3/10 (1,2,3)

Therefore, the probability of getting heads and choosing a number less than four is:
$= \frac{1}{2} (\frac{3}{10}) = \frac{3}{20} = 0.15$

Hope this helps!

3 0

3 years ago

Serika has hired Tom to build her a dollhouse. The dollhouse will be a scale model of her home, and the scale will be 2 inches :

sveticcg [70]

Answer:

96 square inches

Step-by-step explanation:

The scale is 2 inches : 3 feet

Thus for 18 feet in Serika's real house, the model is 18 * (2"/3') = 12 inches

For 12 feet in Serika's real house, the model is 12 * (2"/3') = 8 inches

Area of carpeting needed in Serika's dollhouse = 12" * 8" = 96 square inches

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2 years ago

What is the result of the first step when simplifying 13-4(x-5)

Maksim231197 [3]

I don't really get this question but simply put, if you are in college syntax matters very much. (13-4) = 9 *(x-5) = 9x-45.. although in this case. since there isn't a bracket around 13-4. you'd multiply by the -4 first, giving you, 4x-20+30 =4x-10

8 0

3 years ago

|4x + 7| − 4 = 20 Can anyone help me with this

Reil [10]

Answer:

x = -31/4 or x = 17/4

Step-by-step explanation:

|4x + 7| − 4 = 20

⇔ |4x + 7| − 4 + 4 = 20 + 4

⇔ |4x + 7| = 24

⇔ 4x + 7 = 24 or 4x + 7 = -24

⇔ 4x = 24 - 7 or 4x = -24 - 7

⇔ 4x = 17 or 4x = -31

⇔ x = 17/4 or x = -31/4

6 0

2 years ago

Read 2 more answers

18. Ms. Acosta works in the lab at a pharmaceutical company. She needs to make 21 liters of a 32% acid solution to

defon

Answer:

vbighughyuogytifvyigguhui

Step-by-step explanation:

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3 years ago