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2 years ago

13

Find 1 + 3 + 5 + … + 389.

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]

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

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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.

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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:

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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

$5(-4y-24)+3y=-35$
$-20y-120+3y=-35$
$-17y=85$
$y=-5$

Now you are going to substitute y to find x

$x=-4(-5)-24$
$x=20-24$
$x=-4$

Now lets check if it is correct

$-4+4(-5)=-24 :)$
$5(-4)+3(-5)=-35 :)$

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

hope it helps

5 0

3 years ago