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DochEvi [55]
3 years ago
6

Could you please help?

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0
3. 8 tires for 2 cars = 4 tires for every 1 car

4. (8,2) (12,3) (16,4) (20,5) (24,6) (28,7)
                                ↑
                          plot these on the graph
6.  8/2=16/4=12/3=20/5
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A piece of green jade has a mass of 23.401 g.if the sample of jade displaces 50.0 ml of water to 56.5 ml in a 100 ml graduated c
OleMash [197]

we know that

The density is equal to the formula

Density=\frac{mass}{volume}

in this problem we have

mass=23.401\ gr

<u>Find the volume of a piece of green jade</u>

Volume=56.5\ ml-50.0\ ml=6.5\ ml

Substitute the values in the formula of density

Density=\frac{23.401}{6.5}

Density=3.60\frac{gr}{ml}

therefore

<u>the answer is</u>

Density=3.60\frac{gr}{ml}

3 0
3 years ago
There are 29 second graders at recess. Then, 27 third graders and 43 fourth graders join them at recess.
aev [14]

Answer:

99 students

Step-by-step explanation:

To get this answer, you need to add all of the numbers up because the 3rd graders and 4th graders are joining the 2nd graders. 27+43=70. 70+29=99.

8 0
3 years ago
If the smallest angle of a triangle is 20° and it is included between sides of 4 and 7, then (to the nearest tenth) the smallest
lawyer [7]

Answer:

3.5

Step-by-step explanation:

The smallest side of a triangle is formed by the smallest angle in the triangle.

To find the side opposite (formed by) the 20 degree angle, we can use the Law of Cosines. The Law of Cosines states that for any triangle, c^2=a^2+b^2-ab\cos \gamma, where a, b, and c are the three sides of the triangle and \gamma is the angle opposite to c.

Let c be the side opposite to the 20 degree angle.

Assign variables:

  • a\implies 4
  • b\implies 7
  • \gamma \implies 20^{\circ}

Substituting these variables, we get:

c^2=4^2+7^2-2(4)(7)\cos 20^{\circ},\\c^2=16+49-56\cos 20^{\circ},\\c^2=12.377213236,\\c=\sqrt{12.377213236}=3.51812638147\approx \boxed{3.5}

Therefore, the shortest side of this triangle is 3.5.

5 0
3 years ago
7 times a number is 84 , what is 4 times the number ? A ) 16 B) 28 C) 48 D) 56
liq [111]

Answer:

C. 48

Step-by-step explanation:

first you solve 84 divided by 7 and your answer is 12 then you do 12x4 which is 48

3 0
3 years ago
Read 2 more answers
Which system of equations has infinitely many solutions
Roman55 [17]
F = 2 solutions
G = 2 solutions 
H = infinitely
J = 2
3 0
3 years ago
Read 2 more answers
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