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pickupchik [31]
2 years ago
12

I need to solve the equation 6n + 21 = - 3 - 2n

Mathematics
2 answers:
Vaselesa [24]2 years ago
5 0
Answer: N=-3

Step by step in picture below

Kaylis [27]2 years ago
3 0

Answer:

n= -3

Step-by-step explanation:

First, your're going to subtract from both sides

6n + 21 - 2 1= -3 - 2n - 21

Then simplify

6n = -2n - 24

Then add 2n on both sides

6n + 2n = -2n -24 + 2n

Simplify again

8n = -24

Then divide both sides by 8

8n/8 = -24/8

Then simplify and this is your answer

n= -3

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5. Classify each triangle by its angle and sides
PIT_PIT [208]

Answer:

5 is D

6 is C

Step-by-step explanation:

Define:

Equilateral - All sides and angles are congruent

Isosceles: Two congruent sides and two congruent angles

Scalene: No congruent sides or angles

Right triangle: A triangle with a right angle ( note that a right angle has a measure of 90 degrees )

obtuse triangle: A triangle with an obtuse angle ( obtuse angles have a measure of more than 90 degrees. )

Acute triangle : A triangle with an acute angle ( an acute angle has a measure of less than 90 degrees )

Answer:

the triangle shown in # 5 has a right angle and 2 congruent sides and angles

Therefore the triangle in #5 is a right isosceles

The triangle shown in #6 has an angle with a measure that is more than 90 degrees and have no congruent sides or angles therefore the triangle in #6 is an obtuse scalene.

3 0
3 years ago
I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
Positive fractions less than 1,with interval of 1/8 between each pair of fractions
Sati [7]
Yes it is keep up the good work
4 0
3 years ago
Which expression is equivalent to 50 – 40 - 2?​
Virty [35]

Answer: = 8

Step-by-step explanation: Hope this help :D

3 0
3 years ago
Zoey is designing a jewelry box in the shape of a rectangular prism. The base is 6 inches by 5 inches and the height is 4 inches
makvit [3.9K]

Answer:

148 square inches

Step-by-step explanation:

Step 1: finding the area of the base (upper base plus lower base)

        2( L x W).                  

      2 (6in. x 5in.)

      2( 30 square inches.)

      60 square inches

Step 2: finding the area of first 2 sides

     2 ( l x w)

   2 ( 5in x 4in)

  2 ( 20 square inches.)

     40 square inches

step 3: finding the area of the last 2 sides

  2(lxw)

  2(4in.x 6in.)

 2(24 square inches.)

  48 square inches

step 4: combine all the answers.

60 square inches. + 40 square inches. + 48 square inches = 148 square inches

7 0
3 years ago
Read 2 more answers
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