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vampirchik [111]
3 years ago
9

A number multiplied by -7, subtracted drom the sum of 7 and five times athe number

Mathematics
2 answers:
Ad libitum [116K]3 years ago
7 0
I always use Socratic see if that’ll help
timurjin [86]3 years ago
5 0

7+5×B - B×(-7)? Please correct me if you see a mistake!

-Sarah

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How do you know if a value is a solution to<br> an equation?
Alex787 [66]

Answer:

You know that a value is a soloution to a problem when you add the value into the problem to check if it solves the problem. :)

Step-by-step explanation:

7 0
3 years ago
Please help. Jordan bikes at a speed of 8 2/3 mph. How many miles will he bike in 3 hours and 6 minutes(Fraction form)
Tamiku [17]

Answer:

26 \frac{13}{15}  miles

Step-by-step explanation:

Let's convert 8 and 2/3 to an improper fraction

8 2/3 = 26/3

Lets convert 3 hours and 6 minutes over a fraction of 60 minutes

3 hours 6 minutes = 186 minutes/60 minutes = 186/60

Multiply both improper fractions:

\frac{26}{3} \cdot \frac{186}{60} = \frac{4836}{180} = 26.866.... = 26 \frac{13}{15}

-Chetan K

6 0
3 years ago
How do you solve this?
alekssr [168]

Answer:

84 ft or  84.474

Step-by-step explanation:

46.93 ft/sec * 1.8 sec = 84 ft

Explanation:

The reason you can use simple multiplication is because of the units:

46.93   f t/ sec   ⋅  1.8 sec  would equal  84.474  f t ⋅ sec/ sec

 

however the seconds cancel out, leaving you with just the distance traveled.

The reason the answer is 84 instead of 84.474 is because the number 1.8 only contains two significant figures

Hey love thanks for reposting this so we can see it better! i hope this answers your question if it doesn't let me know se i can better help you understand. Thank you! have a wonderful day and good luck in this class you can do it just keep trying! :)

6 0
3 years ago
A farmer has 3000 feet of fencing to use on a new enclosure. The new enclosure will go up against existing fencing so one side d
andrew11 [14]

Answer:

375000 ft^2

Step-by-step explanation:

From the statement that we have that it would be 1 time the length and 2 times the width because one side is not necessary and also we must take into account that it would be divided by 3 equal enclosures therefore we will use 1000 feet (3000/3) so Therefore, the perimeter would be equal to:

1000 = l + 2 * w

we solve for w:

l = 1000 - 2 * w

Also the area is equal to:

A = w * l

replacing:

A = w * (1000 - 2 * w)

A = 1000 * w - 2 * w ^ 2

We derive:

A '= 1000 - 4 * w

Let's equal 0:

1000 - 4 * w = 0

w = 1000/4

w = 250

replacing and we calculate l:

l = 1000 - 2 * 250

l = 500

A = 250 * 500

A = 15,000 ft ^ 2

Which means that for each subdivision the maximum area would be 125000 square feet and the total would be:

125000 * 3 = 375000 ft ^ 2

4 0
3 years ago
Y varies directly with X and Y equals 60 when x equals 12
Nadusha1986 [10]

Answer:

y = 5x

Step-by-step explanation:

since y varies directly as x then the equation connecting them is

y = kx ← k is the constant of variation

to find k use the condition y = 60 when x = 12, then

k = \frac{y}{x} = \frac{60}{12} = 5

y = 5x ← is the equation of variation


6 0
4 years ago
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