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Sunny_sXe [5.5K]
3 years ago
14

Please helpppp I will give brainliest

Mathematics
1 answer:
Scrat [10]3 years ago
4 0

Answer:

Step-by-step explanation:

1) 10

2) 13

3) 19

4) 25

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6a+ -12a plz explain (a=1/2) I don't know evaluating expressions
Marianna [84]

Plug in the 1/2 where the a’s are answer is -3

7 0
3 years ago
Which best explains why the orthocenter of an obtuse triangle is outside the triangle?
Nezavi [6.7K]

Answer: All three of the altitudes lie entirely outside the triangle.

Step-by-step explanation:

The orthocenter is the center of the triangle formed by creating all the altitudes of each side.  

The altitude of a triangle is formed by creating a line from each vertex that is perpendicular to the opposite side.  

In acute traingle , the orthocenter lies inside it.

In right angled triangle, the orthocenter lies on the triangle.

In obtuse triangle , the orthocenter lies outside the triangle because all the three altitudes meet outside .

So, the best explains why the orthocenter of an obtuse triangle is outside the triangle : All three of the altitudes lie entirely outside the triangle.

6 0
3 years ago
An aquarium has a base in the shape of a trapezoid. The base is 100
Nat2105 [25]

Answer:

Volume = 210L

Step-by-step explanation:

Given

Base:

Front = 100cm

Back = 50cm

Width = 40cm

Height = 70cm

Required

Determine the volume (in litres)

First, we need to calculate the area;

Base on the parameters given, we have:

Area = \frac{1}{2}(Front + Back) * Width

Area = \frac{1}{2}(100cm + 50cm) * 40cm

Area = \frac{1}{2}(150cm) * 40cm

Area = 75cm * 40cm

Area = 3000cm^2

Volume = Area * Height

Volume = 3000cm^2 * 70cm

Volume = 210000cm^3

1cm^3 = 0.001L

So:

Volume = 210000 * 0.001L

Volume = 210L

4 0
4 years ago
Translate the word phrase into a variable expression. please help
IRISSAK [1]
Quotient means the answer to a division problem. 8 less than the quotient indicates that we have to subtract 8 AFTER we do the division... so your expression would be

(x ÷ 3) - 8 or

x/3 - 8

Answer B
6 0
3 years ago
A 124-us piece of material is divided into lengths in the ratio 5:3:7:1. How long is each piece of material?
aalyn [17]

Add the ratio numbers to be your denominator

5+3+7+1=16

Pieces:

5/16 x124=38.75

3/16 x124=23.25

7/16 x124=54.25

1/16 x124=7.75

4 0
3 years ago
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