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3 years ago

Why is 1 + (−5) equal to −4? PLEASE HELP

Mathematics

1 answer:

AfilCa [17]3 years ago

7 0

Answer:

Since the -5 is a bigger number than 1 you would keep the negative and carry it to the -4.

Step-by-step explanation:

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A line perpendicular to the line y=5x+6

Ratling [72]

Answer:

y= -10x +12

Step-by-step explanation:

3 0

3 years ago

I'm gonna give 25 points if you can help me with the 6 questions

postnew [5]

Answer:

1. x<4

2.x<-15

3.a<6

4.x<32

5.r<66

6.m≤-3

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3 years ago

A rug is to be centered in a room so that the border around it is of a consistent width on all four sides. If the room is 10 ft

aleksley [76]

Answer:

The width of the border can be 9 feet or 3.5 feet.

Step-by-step explanation:

Let the width be x

Length of room = 10 feet

Breadth of room = 15 feet

Length of rug = 10-2x

Breadth of rug = 15-2x

Area of rug = $(10-2x)(15-2x)$

We are given that the area of the rug is 24 square feet.

So, $(10-2x)(15-2x)=24$ ---A

$150-20x-30x+4x^2=24$

$150-24-50x+4x^2=0$

$126-50x+4x^2=0$

$2(x-9)(2x-7)=0$

$x=9,\frac{7}{2}$

$x=9,3.5$

Substitute x =9 in A

$(10-2(9))(15-2(9))=24$

$24=24$

LHS = RHS

Substitute x = 3.5

$(10-2(3.5))(15-2(3.5))=24$

$24=24$

LHS = RHS

So, The width of the border can be 9 feet or 3.5 feet.

7 0

3 years ago

Using the formula for volume of a cone, express r in terms of V, h and pi

DiKsa [7]

The volume of the cone is one-third of the volume of the cylinder which is equal to the product of area of the base and the height. The equation is,

V = (1/3)(pi)(r^2)h

Dividing both sides of the equation by (1/3)(pi)(h) will give us,

3V/(pi)(h) = r^2

Taking the square-root of both sides,

r = sqrt(3V/(pi)(h))

3 0

3 years ago

Read 2 more answers

Solve: 16 + x = 12 then you can get the brainiest.

alexgriva [62]

The answer would be -4 because when you add a positive and a negative it’s like subtracting.

4 0

3 years ago