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3 years ago

Solve for x plezzzzzz

Mathematics

1 answer:

vichka [17]3 years ago

5 0

Step-by-step explanation:

x-5 = 12

X = 17

hope this helps

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What two numbers multiply to -50 and add up to -23

umka2103 [35]

Answer:

-25 and 2

Step-by-step explanation:

x + y = -23

xy = 50, so y = 50 /x

x + 50/x =-23, x^2 +23x - 50 = (x-2)(x+25)

so 2 and -25

4 0

2 years ago

Minas time for running the mile 9.4 minutes. If her friends ran the mile in 11.02 minutes, how much faster was Mina?

MrMuchimi

First you would subtract Minas friends mile time from Minas mile time.
11.02-9.4
Mina is 1.62 minutes faster than her friend

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3 years ago

The variable y varies directly with the variable x.

Tomtit [17]

Answer:

I believe it is 21

Step-by-step explanation:

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3 years ago

Read 2 more answers

It takes Matt 6 minutes to swim 12 laps in the pool. How many laps could he swim in 9 minutes?

pochemuha

Answer:

Step-by-step explanation:

6*2=12

9*2=18

Two laps per minute

4 0

3 years ago

Read 2 more answers

A farmer plans to fence a rectangular corral. The diagonal distance from one corner of the corral to the opposite corner is five

garik1379 [7]

Answer:

Length of diagonal is 7.3 yards.

Step-by-step explanation:

Given: The diagonal distance from one corner of the corral to the opposite corner is five yards longer than the width of the corral. The length of the corral is three times the width.

To find: The length of the diagonal of the corral.

Solution: Let the width of the rectangular garden be <em>x</em> yards.

So, the length of the diagonal is $x+5$

width of the rectangular corral is $3x$

We know that the square of the diagonal is sum of the squares of the length and width.

So,

$(3x)^{2} +x^{2} =(x+5)^{2}$

$9x^{2} +x^{2} =x^{2}+10x+25$

$9x^{2}-10x-25=0$

$x=\frac{-b\pm\sqrt{b^{2} -4ac} }{2a}$

$x=\frac{10\pm\sqrt{(-10)^{2} -4(9)(-25)} }{2(9)}$

$x=\frac{10\pm\sqrt{100}}{18}$

Since, side can't be negative.

$x=\frac{5}{9}+\frac{5}{9}\sqrt{10}$

Now, length of the diagonal is

$5+\frac{5}{9}+\frac{5}{9}\sqrt{10}$

Hence, length of diagonal is 7.3 yards.

4 0

3 years ago