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kykrilka [37]
2 years ago
13

Find 1 + 3 + 5 + … + 389.

Mathematics
2 answers:
Triss [41]2 years ago
6 0

Answer:

398 i think

Step-by-step explanation:

user100 [1]2 years ago
3 0

Answer:

The rule is +2

This is the 194th term

Step-by-step explanation:

This is an arithmetic sequence because 2 is added every time.

2x + 1 = 389

2x = 388

x = 194

194* 2 + 1 = 389

mark brainliest please!

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A. 1/5<br><br> B. 1/3<br><br> C. 7/15<br><br> D. 1/2
Allisa [31]

P(B|A)=\dfrac{P(A \cap B)}{P(A)}\\\\ |\Omega|=15\cdot14=210\\ |A|=3\cdot14=42\\ |A \cap B|=3\cdot7=21\\\\ P(A)=\dfrac{42}{210}=\dfrac{7}{35}\\ P(A \cap B)=\dfrac{21}{210}=\dfrac{1}{10}\\\\ P(B|A)=\dfrac{\dfrac{1}{10}}{\dfrac{7}{35}}=\dfrac{1}{10}\cdot\dfrac{35}{7}=\dfrac{1}{2}\Rightarrow \text{D}

4 0
4 years ago
Write a proportion to find the distance from campsite 3 to the water​
Dafna1 [17]

Answer:

3:1

Step-by-step explanation:

It's three times the distance of 1 foot.

4 0
3 years ago
Three negative numbers are added together. Which of the following statements is correct about the sum?
sp2606 [1]
The sum will be negative
4 0
3 years ago
Please answer this correctly
ZanzabumX [31]

Answer:

3/8

Step-by-step explanation:

Since the wheel is numbered 2 through 9, only 3 of the 8 are less than 5 (2, 3, and 4)

5 0
3 years ago
Read 2 more answers
X + 4y = -24<br> 5x + 3y = -35
Salsk061 [2.6K]

Answer:

(-4,-5  )

Step-by-step explanation:

You are looking for the point of intersection of these two functions.

Substitution:

  • This are now your formulas

\left \{ {{x=-4y-24} \atop {5x+3y=-35}} \right.

  • You are going to substitute x, so you can solve for y
  1. 5(-4y-24)+3y=-35
  2. -20y-120+3y=-35
  3. -17y=85
  4. y=-5
  • Now you are going to substitute y to find x
  1. x=-4(-5)-24
  2. x=20-24
  3. x=-4
  • Now lets check if it is correct
  1. -4+4(-5)=-24 :)
  2. 5(-4)+3(-5)=-35 :)

So it is true, making (-4 , -5) your point of intersection.

hope it helps

5 0
3 years ago
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