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3 years ago

What’s the solution to -5x-y=21 when y is equal to 6+4x

Mathematics

1 answer:

agasfer [191]3 years ago

3 0

Answer:

x= -3, y=-6

Step-by-step explanation:

In the equation -5x-y=21, substitute y for 6+4x:

-5x- (6+4x) = 21

^^Solve for x.

X should come out to -3. To find y, plug -3 into either equation (-5x-y=21 or y=6+4x) and y should equal -6.

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Taya2010 [7]

Answer: 20

Step-by-step explanation:

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3 years ago

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Ten is the average number of oil tankers arriving each day at a certain port. The facilities at the

vagabundo [1.1K]

Answer:

If 10 is the average then 10 each side would be 20

so that 15 fits into 20 at 3/4

1- 3/4 = 1/4

So the answer is 1/4

Step-by-step explanation:

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3 years ago

How May I Draw My number Line And Where Would My Numbers Go?

Digiron [165]

.5 is basically 1/2. We know this because .5 written as a fraction is 50/100 which you can simplify to 1/2.

6/10 is greater than 1/2. You can find this out by converting 1/2 to tenths. Multiply the numerator and the denominator by 5 to get 5/10. From there you can easily see that 6/10 > 5/10.

As for the number line simply use 10ths: 1/10, 2/10, 3/10 ... and input 6/10 and 5/10 in the appropriate areas.

4 0

3 years ago

A rectangular field measures 227 by 56 yards. How far is it to walk from one corner of the field to the opposite corner? How far

GaryK [48]

Answer:

233.8 Yards

Step-by-step explanation:

Given that,

Length of a rectangular field, l = 227 yards

Breadth of a rectangular field, l = 56 yards

Let x is the distance from one corner of the field to the opposite corner. It can be calculated using Pythagoras theorem,

$x=\sqrt{l^2+b^2} \\\\x=\sqrt{(227)^2+(56)^2} \\\\x=233.8\ \text{Yards}$

So, the distance from one corner of the field to the opposite corner is 233.8 Yards.

3 0

3 years ago

F(x)=9x^2+6x+1 what is the x-intercepts

gayaneshka [121]

X-intercept is (-1/3 , 0)

8 0

3 years ago