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o-na [289]
3 years ago
6

Help what does this equal . its on khan academy

Mathematics
1 answer:
Hatshy [7]3 years ago
3 0

Answer:

110

Step-by-step explanation:

all triangles are = to 180 degrees

25+45=70

180-70=110

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Ivanna made $133 for 7 hours of work. At the same rate, how many hours would she have to work to make $228?​
Arada [10]
The answer is 12 duh
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2 years ago
A right pyramid has a rectangular base that is 3 inches by 5 inches if the height of the pyramid is 8 inches, what is it’s volum
Fynjy0 [20]

Answer:

A) 40 in.^3

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6 0
3 years ago
Given the system of equations, what is the y-coordinate of the solution?5x - 4y = 7x = 5 - y
sveticcg [70]
5x - 4y = 7
x = 5 - y

5(5 - y) - 4y = 7
25 - 5y - 4y = 7
-5y - 4y = 7 - 25
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y = -18/-9
y = 2 <== y coordinate is 2

6 0
3 years ago
In a simplified model of a hydrogen atom, the electron moves around the proton nucleus in a circular orbit of radius 0.53 × 10−1
tresset_1 [31]
For the answer to the question above,
 <span>a) Use F = k * q1 * q2 / d² 
where k = 8.99e9 N·m²/C² 
and q1 = -1.602e-19 C (electron) 
and q2 = 1.602e-19 C (proton) 
and d = distance between point charges = 0.53e-10 m 
The negative result indicates "attraction". 

b) Here, just use F = ma 
where F was found above, and 
m = mass of electron = 9.11e-31kg, if memory serves 
a = radial acceleration 

c) Now use a = v² / r 
where a was found above 
and r was given 

d) period T = 2π / ω = 2πr / v 
where v was found above 
and r was given </span>
7 0
3 years ago
George makes two transactions today what can be the sum of 78+ (-34) mean in terms of George bank account
Alinara [238K]
Aacanding th the title a tite sic is 7R t Cz4
78t1-341=78-34=44 iThe iome is psitive aad the withdraual is
regative
so the sum TRIc-3) is mean the situation of the Gearge's acount
after the two transactions today


Gerge is bank account cared 44 today
8 0
1 year ago
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