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GalinKa [24]
3 years ago
6

Javier is building a model train. He has enough track for a train that is

Mathematics
1 answer:
Musya8 [376]3 years ago
5 0
He doesn’t have enough for both to be on at a time but if the cars are on without the train the cars will take up 2.4 meters leaving them with an extra .1 meters of length
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olganol [36]
h=9
A=((a+b)/2)h
234=((32+20)/2)h
234=(52/2)h
234=26h
9=h

6 0
3 years ago
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What is the product?<br><br> (5r + 2)(3r − 4)
bazaltina [42]

this is the answer 15r^2 − 14r − 8

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8 0
3 years ago
Read 2 more answers
15+x&lt;24 what is the solution to this inequality
ra1l [238]
Move all terms not containing x to the right side of the inequality. x < 9

5 0
3 years ago
29. Find the height of the trapezoid. Use this height to find the area. (A =
harkovskaia [24]

Answer:

<em>The area of the trapezium is 168</em>

Step-by-step explanation:

<u>Area of a Trapezoid</u>

Given a trapezoid of parallel bases b1 and b2, and height h, the area is calculated with the formula:

\displaystyle A=\frac{b_1+b_2}{2}h

The trapezoid in the figure has b1=15 and b2=27. We need to find the height. If we focus on triangle BCD, we can calculate the height as the distance EC by using the Pythagora's Theorem:

10^2=EC^2+BC^2

The side BC can be found as half the difference of the bases:

BC=\frac{27-15}{2}=6

Solving for EC:

EC^2=10^2-6^2=100-36=64

EC=\sqrt{64}=8

Now we have the height, calculate the area:

\displaystyle A=\frac{15+27}{2}*8

\displaystyle A=\frac{42}{2}*8

A = 168

The area of the trapezium is 168

5 0
3 years ago
Write 74 in expanded form. Then check all that apply. The base is 7. The exponent is 4. The exponent tells you to multiply 7 tog
rewona [7]

Answer:

7*7*7*7

Step-by-step explanation:

=> 7^4

<u><em>This means that 7 is multiplied 4 times</em></u>

So, it becomes:

=> (7×7×7×7)

3 0
3 years ago
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