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Mazyrski [523]
3 years ago
10

Help I don't know the answer

Mathematics
1 answer:
anygoal [31]3 years ago
4 0

Answer:

b

Step-by-step explanation:

i hade the same test 1 hour ago got a 97

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the ratio of red marbles to blue marbles in a bag is 3:4. which of the the following is a possible total number of marbles?
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3:4
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9:12

if u either multiply or divide a number from one side, u must do the same calculation to the other side. hope that helps :)
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2 years ago
Solve completely (all missing sides and all missing angles) using trig ratios or laws. Round to the nearest tenth.
hodyreva [135]

Answer:

Step-by-step explanation:

3. Use Cosine law to find the  length of the unknown side (PR)

q² = p² +  r² - 2prCos Q

q is the opposite side of ∠Q;  

p is the opposite side of ∠P; p = 33

r is the opposite sides of ∠R ; r = 67

q² = 33² + 67² -  2* 33*67 Cos 19°

    = 1089 + 4489 - 4422 * 0.95

     = 1089 + 4489 - 4200.9

    = 1377.1

q = √1377.1

q = 37.1

PR = 37.1

To find the angle use law of sin

\sf \dfrac{q}{Sin \ Q} =\dfrac{p}{Sin \ P}\\\\\\\dfrac{37.1}{Sin \ 19}=\dfrac{33}{Sin \ P} \\\\\\\dfrac{37.1}{0.33}=\dfrac{33}{Sin \ P}\\\\\\37.1* Sin \ P = 33 *0.33\\\\Sin \ P =\dfrac{33*0.33}{37.1}

Sin P = 0.3

P = Sin^{-1} 0.3\\

P = 17.5°

∠R = 180 - (19 + 17.5)

    = 143.5°

6 0
2 years ago
Find the sum of 89 and - 75<br>​
Dominik [7]

Answer:

164

Step-by-step explanation:

89+75 that's easy very easy

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2 years ago
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If a sprinkler waters 1 over 20 of a lawn in 1 over 5 of an hour, how much time will it take to water the entire lawn?
Genrish500 [490]
5 hours bc my math add ups
7 0
2 years ago
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