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AleksandrR [38]

3 years ago

11

Help with number three!

1 answer:

natka813 [3]3 years ago

7 0

1 hour and 35 minutes without the break. 60 minutes in an hour, subtract 15 from 50 = 35 minutes. It starts at 3 and ends at 4, which is 1 hour apart. Because there us a break you subtract 30 from the minutes , 35-30=5. So you have 1 hour and 5 minutes.

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Urgent please help quick!!!

Radda [10]

Answer:

$x=-1\\y=-1$

Step-by-step explanation:

$5x+5y=-10\\3x-7y=4$

Let's solve the first equation for either x or y. I'll do it for x.

$5x+5y=-10$

Begin by subtracting 5y.

$5x=-5y-10$

Now divide by 5.

$x=\frac{-5y}{5}-\frac{10}{5}$

Simplify:

$x=-y-2$

Now substitute x in the second equation for this value.

$3x-7y=4\\3(-y-2)-7y=4$

Distribute;

$-3y-6-7y=4$

Add 6

$-3y-7y=4+6$

Combine like terms;

$-10y=10$

Divide by -10.

$y=\frac{10}{-10}\\ y=-1$

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Take this value of y and replace it in the first equation to find the value of x.

$5x+5y=-10\\5x+5(-1)=-10\\5x-5=-10\\5x=-10+5\\5x=-5\\x=\frac{-5}{5}\\ x=-1$

5 0

3 years ago

What is the missing number

just olya [345]

8 is the missing number
Let’s say x is 2,
3(2)+8=14
8(2)-2=14

8 0

3 years ago

Solve the equation and determine the value of t. t + 38 = 420

Valentin [98]

Answer:

t=382

Step-by-step explanation:

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The scale of the map is messing the actual distance from library to the west quill is 72 miles and it is 6 inches on the map wha

Sonbull [250]

Answer:

A) 12 miles per inch

B) 36 miles from west quail, 48 from liberty

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3 years ago

Simplify <br><br>x - ( - 6 x )

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Answer:

7x

Step-by-step explanation:

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