The following transformations maintain their mathematical congruence. Translations (a translation is considered a 'direct isometry' because it not only maintains congruence, but it also, unlike reflections and rotations, preserves its orientation.
23.459
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This is the tenths spot
23.5 since 5 rounds up the 4
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hope it helps
Answer:
i did that quiz the answer is 3.2
Step-by-step explanation:
your welcome
Answer:
x = 10
Step-by-step explanation:
Given the 2 equations
x - y = 11 → (1)
2x + y = 19 → (2)
Adding (1) and (2) term by term will eliminate the y- term
(2x + x) + (y - y) = (19 + 11)
3x = 30 ( divide both sides by 3 )
x = 10
Answer:
B. 95% confident the average concentration of PCBs in the water supply is between 2.9 ppb and 3.5 ppb
Step-by-step explanation:
You are given the total number of samples, the concentration of lead, and the standard deviation. The standard deviation represents how inaccurate the estimation of the concentration of lead in the drinking water. This means that there can only possibly be a 0.3 ppb error in the estimation. 3.2-0.3=2.9, and 3.2+0.3=3.5