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3 years ago

Rewrite the expression 7x+21=

Mathematics

2 answers:

Furkat [3]3 years ago

7 0

You must find the factors of 7 and 21. Which is 7.

7(x+3)

And that's one way to rewrite this expression :)

Dima020 [189]3 years ago

5 0

Minus the 21 from the other side of the equation making it 7x=-21 then u divide the 7 from the x to the -21 resulting in x=-3

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Classify the following triangle. Check all that apply. Wind

klio [65]

Answer:

B. Scalene and D. Acute

Step-by-step explanation:

Check each answer.

A. Equilateral

All sides or all angles are not equal. So it is not equilateral.

B. Scalene

All sides are unequal. So it is scalene.

C. Obtuse

No any angle is greater than 90°. So it is not obtuse.

D. Acute.

All angles are less than 90°. So it is acute.

E. Isosceles

No two sides are equal. So it is not isosceles.

F. Right

No angle is 90°. So it is not right

Therefore, only answers B. Scalene and D. Acute are correct.

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4 years ago

Find the distance between the two points rounding to the nearest tenth (if necessary).

Evgesh-ka [11]

Answer:

approximately 8.5

Step-by-step explanation:

So you can use the distance formula: $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\$ which is derived from the Pythagorean theorem because normally x2-x1 would kind of give the distance length between x2 and x1 except sometimes it would be negative which wouldn't make much sense right? but it doesn't matter because it's being squared so the value ultimately becomes positive, and the same thing goes for the y-value. the distance between x2 - x1 really represents the base and y2-y1 represents the height and then adding them together gives the hypotenuse squared which is why you take the square root over the entire thing to find the distance, since the hypotenuse is the shortest distance between two points

Now all you have to do is plug the values in to get

$\sqrt{(-7 - (-4))^2 + (-8 - 0)^2}\\\sqrt{(-3)^2 + (-8)^2}\\\sqrt{9 + 64}\\\sqrt{73}\\distance \approx 8.5$

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2 years ago

How to plug into the table the y-coordinate

barxatty [35]

Step-by-step explanation:

the y coordinate is always the second value. for example, if u have (3,2) the y value is 2

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3 years ago

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Fed [463]

Answer:

8th term=107

Step-by-step explanation:

Here the sequence is following the 'fibonacci's sequence of numbers.....

i.e,Tn=T(n-1) +T(n-2), where n>2 but this sequence is not fibonnaci's number , it's not starting with 0, 1,1,2........

so you cannot apply formula to calculate,you have to find 8th term by simple calculation.....

Like here 3rd term is 9 and 1st term is 2

now 3rd term = 2nd term+1st term (sum of previous two terms)

i.e, 9= 2nd term +2

i.e, 2nd term =7

now, 4th term = 3rd +2nd

= 9+7=16

again, 5th term = 4th +3rd

=16+9=25

again,6th term =5th+4th

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again,7th term=6th+5th

=41+25=66

again,8th term=7th+6th

=66+41=107

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3 years ago

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Answer:c

Step-by-step explanation: I hope this helped!

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3 years ago