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Daniel [21]
3 years ago
14

Which number sentence is in the same family facts.

Mathematics
1 answer:
DanielleElmas [232]3 years ago
7 0
Ok, but i think you explained it bad, tag me again so i can answer
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-4(7j+2=10 please help, ​please-4(7j+2=10 please help, ​please-4(7j+2=10 please help, ​please-4(7j+2=10 please help, ​please-4(7
Goryan [66]

Answer:

x=12 .  x=-12

Step-by-step explanation:

ONce you do the quadratic equasion than you move on to the solving part and from ther it is easy

8 0
2 years ago
How many gallons of a 60% antifreeze solution must be mixed with 70 gallons of 20% antifreeze to get a misture that is 50% antif
Komok [63]

Answer:

<h2>210 gaL 60 % Antifreeze II</h2>

Step-by-step explanation:

In the problem, there are two types of antifreeze

antifreeze I and

antifreeze II

antifreeeze I 20 ----70 gal

Antifreeze II 60 ----- x gal

Total 50 ---------------- (70 + x ) gal

20*70+60*x=50(70+x)

1400+60x=3500+50x

60x-50x=3500-1400

10x=2100

x= 210

x=210 gaL 60 % Antifreeze II

4 0
2 years ago
2sinx / cos3x = tan3x - tanx -verify the identity-
scoundrel [369]

Answer:

cos3x+tan3x=0  

⟹cos3x=−tan3x

⟹cos3x=−sin3xcos3x

⟹cos23x=−sin3x

⟹1−sin23x=−sin3x

⟹sin23x−sin3x−1=0

This is a quadratic equation in sin3x.

sin3x=−(−1)±(−1)2−4×1×(−1)−−−−−−−−−−−−−−−−−√2×1

sin3x=1±5–√2

If x takes real values, the upper sign must be rejected.

sin3x=1−5–√2

⟹3x=nπ+(−1)nsin−11−5–√2

⟹x=13[nπ+(−1)nsin−11−5–√2]

Step-by-step explanation:

Hope this kind of helps

6 0
2 years ago
Solve each system of inequalities by graphing. x&gt;2 y&lt;4​
Snowcat [4.5K]

Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
HELPPPPPPP!!!!!!!!!!!!!
Sonbull [250]
14.23 is your answer!!!!!!!
4 0
3 years ago
Read 2 more answers
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