3 years ago

Help Pls Fast! (55 POINTS!)

Mathematics

2 answers:

Ainat [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Sauron [17]3 years ago

5 0

Answer:

Close to 6 miles. Exact is between 5.7 and 6

Step-by-step explanation:

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Reil [10]

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Andrej [43]

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Step-by-step explanation:

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The perimeter of a semicircle is 25.7 feet. What is the semicircle's radius?<br><br> Use 3.14 for .

jarptica [38.1K]

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Step-by-step explanation:

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3 years ago

Solve for x.<br> 5x – 7 = 8x – 4

hammer [34]

Answer:

x =-1

Step-by-step explanation:

$5x- 7 = 8x - 4\\\\\mathrm{Add\:}7\mathrm{\:to\:both\:sides}\\5x-7+7=8x-4+7\\\\Simplify\\5x=8x+3\\\\\mathrm{Subtract\:}8x\mathrm{\:from\:both\:sides}\\5x-8x=8x+3-8x\\\\Simplify\\-3x =3\\\\\mathrm{Divide\:both\:sides\:by\:}-3\\\frac{-3x}{-3}=\frac{3}{-3}\\\\Simplify\\x=-1$