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34kurt
3 years ago
5

A triangle has an area of 30 square centimeters.

Mathematics
1 answer:
Daniel [21]3 years ago
6 0

Answer: 10.9 cm

Step-by-step explanation:

The equation to find the area of a triangle is

Base x height x 1/2 = area

Since you are given the area, rearrange or “do the opposite” to find the base

(Area x 2 ) / height = base

30 x 2 = 60

60/ 5.5 = 10.9

Hope this helped :)

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7 0
3 years ago
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2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
Butoxors [25]

Answer:

Step-by-step explanation:

x= money earned per hour working as a cashier.

y=money earned per hour working delivering newspapers.

We propose the following system of equations:

5x + 4y =77

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We solve the system by reduction method:

-6*(5x+4y=77) ⇒  -30x-24y=-462

5*(6x+3y=78)⇒     30x+15y=390

                             ---------------------------

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Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.

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5x=45

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therefore;  

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money earned per hour working delivering newspapers=$8/hour

7 0
3 years ago
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Please help me do this i need it​
Darya [45]

Answer:

(x+1)(3x+2) is the answer

6 0
2 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
Seven years from now the age (a) of Jose will be __________. Which expression matches this situation? A) 7a
Vladimir79 [104]
I believe the answer is C. 
Sorry if I'm wrong but I hope this helps.
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