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3 years ago

Find the sum of all the integers from 1 to 100 that are not multiples of 7

Mathematics

1 answer:

Mars2501 [29]3 years ago

8 0

Answer:

4343

Step-by-step explanation:

To find multiple of 7 from 1 to 100,

Take the quotient of 100/7=14

n=100 (number of terms)

n=100-14 (Without Multiple of 7=number of terms - multiple of 7)

=>n=86

Sum of 1 to 100 => Sn = n/2(a + an)

=> Sn = 86/2(1+100)

=> Sn = 43(101)

=> Sn = 4343

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Given the points (–3,k) and (2,0), for which values of k would the distance between the points be √34 ?

myrzilka [38]

Answer:

The values of k are 3 and -3

Step-by-step explanation:

we know that

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

$(-3,k)\\(2,0)$

$d=\sqrt{34}$

substitute

$\sqrt{34}=\sqrt{(0-k)^{2}+(2+3)^{2}}$

$\sqrt{34}=\sqrt{(-k)^{2}+(5)^{2}}$

$\sqrt{34}=\sqrt{k^{2}+25}$

squared both sides

$34=k^{2}+25$

$k^{2}=34-25$

$k^{2}=9$

$k=(+/-)3$

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3 years ago

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Find the value of the following expression using a number line.<br><br> 3+(−2)

m_a_m_a [10]

Answer: 3 + (-2) = 1

Step-by-step explanation:

If you were to evaluate this using a number line you would start at positive 3. Since the two is negative you would move to the left two spaces, leaving you at positive 1. That is your answer.

7 0

2 years ago

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1 3/7 times 2 3/4 =<br> I WILL REWARD BRAINLIEST

charle [14.2K]

Answer:

25/7

Step-by-step explanation:

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3 years ago

(Geometry) WILL GIVE BRAINLIEST. Also, more similar questions are on my page please help!

denpristay [2]

Step-by-step explanation:

y = 10°

is the correct answer .

plz mark my answer as brainlist.

3 0

2 years ago

5 pounds of rice at a store cost $6.50 use the ray tool to graph the cost C, vs pounds of rice

Kobotan [32]

Given that 5 pounds of rice at a store cost $6.50.

Then 1 pounds of rice at a store cost = $6.50/5= $1.3

So the equation for the cost can be written as:

C=1.3P just like we write equation y=mx

Now we have to graph the cost C, vs pounds of rice.

Variable for Pounds of rice is not given so let it be "P"

So let's make a table for number of pounds (P) and cost (C) the we can graph the points from that table to get the final graph.

Attached graph is the final graph.

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2 years ago