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V125BC [204]
2 years ago
13

Solve and recieve brain list ​

Mathematics
1 answer:
Mashutka [201]2 years ago
4 0

Answer:

-x -7y=-15

y=3x-1

-x-7(3x-1)=-15

-x-21x+7=-15

-22x+7=-15

-22x=-15-7

-22x=-22

x=-22/-22

x=1

y=3x-1

y=3(1)-1

y=3-1

y=2

(1, 2)

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A submarine starts at the surface of the Pacific Ocean and descends 60 feet
Svet_ta [14]

Answer:

360 feet

Step-by-step explanation:

We need to multiply the number of hours, 6, with 60 feet: 6*60 = 360 feet The submarines depth after 6 hours will be 360 feet.

4 0
2 years ago
Solve for x:<br> x^2=a<br><br> If a&lt;0, then <br> If a=0, then<br> If a&gt;0, then
Anastaziya [24]

if a > 0, there are two possible solutions:

x^{2} = a\\\sqrt{x^{2} } = \sqrt{a} \\

the square root of a square is the base in absolute value bars

|x| = \sqrt{a}

x = -\sqrt{a} ; x = \sqrt{a}

if a = 0, that means x = 0. anything multiplied by 0 is 0

if a < 0, there are no solutions because anything squared has to be positive

6 0
2 years ago
Jeffery earned $65 doing yard work. He bought a pair of jeans for $31.25 and a sweat shirt for $16.50. He set aside the money le
erastova [34]

Answer:

Step-by-step explanation:

65.00 - 31.25 - 16.50 = $17.25

4 0
3 years ago
Write the equation for a line perpendicular to y=-3x+18 that goes through the point (-12,6)
Hatshy [7]

Answer:

y=\frac{1}{3} x -14

Step-by-step explanation:

The equation of the line you will find should be in the form y =mx+c , where m is the gradient and c is the y intercept.

The gradient of a line that is perpendicular to a line [of a known gradient] is the negative reciprocal of the gradient of the first. i.e. if a is the known gradient and the perpendicular gradient is b, ab = -1. Therefore the -3b=-1 and b= 1/3

you can now write y = mx +c as y = 1/3x +c

As you have been given a coordinate, you can input these values into y= 1/3x + c

-12 = 1/3(6) +c

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2 years ago
Find the greatest common factor of each set of numbers 27,36,72
7nadin3 [17]
The answer is to the question is 9
6 0
3 years ago
Read 2 more answers
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