Answer:
A. -5x = -23
Step-by-step explanation:
First you have to simplify the equation - 4(x - 5) + 8x = 9x - 3
-4x + 20 + 8x = 9x -3
9x - 4x = 20 + 3
5x = 23
=> equivalent to answer A.
The equation for this is a^2+b^2=c^2 so your equation would be 7^2+20^2=X
So you square the 7 and the 20 then take the square root of X and you get
X=21.19
:)
Answer:
1 lap in 8/10 (4/5) of a minute
Answer is B, 8/10 minute! or (6a times 5)+(6a times d)
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Step-by-step explanation:
Answer:
A triangle similar to DEF will have an angle that measures 45 degrees, an angle that measures 65 degrees, and an angle that measures 70 degrees
Step-by-step explanation:
Given
See attachment for complete question
Required
Angles of a triangle similar to
First, calculate the angle at D
---- angle on a straight line
Collect like terms
Next, calculate the angle at F
---- angle on a straight line
Collect like terms
Lastly, the angle at E
--- angles in a triangle
Make E the subject
<em>A triangle similar to </em><em> will have 45, 70 and 65 degrees as its angles</em>