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Dafna1 [17]
3 years ago
12

PLS HELP NOBODY WILL HELP ME JUST SPAM ANSWERS I WANNA CRY JUST PLS ANYONE? ILL DEFINETLY GIVE BRAINLIEST : (

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

7(left answer), 3(top left answer), and 10(top right answer)

Step-by-step explanation:

So what are two things that go into 21?

  1. 21 and 1
  2. 7 and 3

Out of those two, which is a factor of 70? Right off the bat we know 7 is.

THis isnt the greatest factor of 70, but it is for both 21 and 7, so now we know the left answer for hieght is 7.

Now 3 must be the top left answer, because you must make 21 with 7. 7 Goes into 21 3 times, so it has to be 3. So now we know that the top left anhswer is 3.

Finally we have our top right answer. We already know that the height is 7, now we need to find the width. All we have to do is divide 70 by the 7 heigh, and we will find our width:

70/7

=

10

So now we know that the top right answer is 10.

<u>Sorry that you couldnt get a real answer from people, I hope this is in time to help! </u>

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(90, 16)

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Determine the points of intersection for x^2+y^2=1 and y= x+1
frosja888 [35]
(0, 1) and (1, 0) are the intersection points. The first equation is a circle and the second is a linear function. 
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4 years ago
What is the solution set of x^2+y^2=26 and x-y=6
Strike441 [17]
x^{2} + y^{2} =26  x-y=6  x=y+6&#10; Replacing in equation;  (y+6[tex] )^{2}+y^{2}=26
y^{2} +12x+36+ y^{2} =36
=2y^{2} +12x+36-26=0
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factoring;
2y^{2}+2y+10y+10=0
2y(y+1)+10(y+1)=0
(2y+10)(y+1)=0
y=-1 or 2y=-10
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4 0
4 years ago
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The standard deviation of a sample taken from population A is 17.6 for a sample of 25.
lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation \sigma_A is

\sigma_A = 17.6

The sample size n_A is:

n_A = 25.

For the sample of population B, the standard deviation \sigma_B is

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The sample size n_B is:

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Finally

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4 years ago
A lock has 3 digits and can have any number from 0-9 how many combinations are there
tatiyna

Ten choices for the first digit, 10 for the second, 10 for the third,

10 × 10 × 10 = 1000 combinations

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