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e-lub [12.9K]
3 years ago
8

HELP.meeee for math​

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
6 0

I think it’s 3 but I’m not sure

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What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...​
PolarNik [594]

Answer:

141  5/7

Step-by-step explanation:

8c + 10b ÷ 7a

Let c = 7, b = 12, and a = 5

8*7 + 10*12 ÷ 7*5

Multiply and divide from left to right

56+120 ÷7*5

56+ 600/7

Get a common denominator

392/7 + 600/7

992/7

Change from an improper fraction to a mixed number

141  5/7

8 0
3 years ago
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Tangent is positive in quadrants I and IV only.<br>True or False
zhannawk [14.2K]

Answer:

The statement is false

Step-by-step explanation:

we know that

tan(x)=\frac{sin(x)}{cos(x)}

The tangent function will be positive when the sine function and the cosine function have the same sign

so

In the first quadrant the tangent function is positive

In the third quadrant the tangent function is positive

so

The statement is false

6 0
3 years ago
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Pls help help me need help!!
BARSIC [14]

Answer:

50 feet

Step-by-step explanation:

\mid -20 \mid +\mid 30\mid = \\\\20+30= \\\\50

Hope this helps!

6 0
3 years ago
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I need help with a math problem: y x 6 for y = 2/3
STALIN [3.7K]

Answer:

the answer is 4.

Step-by-step explanation:

2×6= 12

12/3=4

3 0
3 years ago
Find the value of x for which the lines a and b are parallel.
siniylev [52]

Answer:

x = 19

Step-by-step explanation:

148 and 7x+15 are alternate interior angles and alternate interior angles are equal when the lines are parallel

148 = 7x+15

Subtract 15 from each side

148-15 = 7x+15-15

133 =7x

Divide each side by 7

133/7 =7x/7

19=x

4 0
3 years ago
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