Answer:h=−5t2−10t+70
Step-by-step explanation:
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Answer:
m∠A = 65°
Step-by-step explanation:
<em>Opposite angles of the quadrilateral add up to 180</em>.
This means x + 148 = 180 -> <em>x = 32</em>.
m∠A = 2x + 1 -> 2(32) + 1
m∠A = 65°.
Answer:
C. 12
Step-by-step explanation:
We know you have the number 18 and the fraction 2/3. The problem is we want to find out what 2/3 of 18 is. Well, if 18 divided by the denominator of that fraction (3) is 6 than we just add 6 because the question is asking for 2/3 NOT 1/3.
You know that D is 35° cause of the angle next to F. and <E=180-(120+35) so E is 25°
Answer: it contains 200 grams of zinc.
Step-by-step explanation:
Ratio of zinc to copper is 4 to 15 = 4;15
Total ratio = 4+15= 19
We first find amount of both zinc and copper( the whole chemical) which is equal to
ratio of copper / total ratio x (the entire chemical--total grams of zinc and copper) =amount of copper
15/19 x X = 750
X= 750 X 19 / 15= 950 grams
To find amount of zinc in the chemical = ratio of zinc / total ratio x total amount of chemical
=4/19 x 950
=200 grams
