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3 years ago

The sum of 14 and which number will equal -3

Mathematics

1 answer:

Len [333]3 years ago

4 0

Answer:

-17

Step-by-step explanation:

-3-14 = -17

-17 + 14 = -3

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Someone plzzzz help me):

sergiy2304 [10]

C. x³-4x²-16x+24.

In order to solve this problem we have to use the product of the polynomials where each monomial of the first polynomial is multiplied by all the monomials that form the second polynomial. Afterwards, the similar monomials are added or subtracted.

Multiply the polynomials (x-6)(x²+2x-4)

Multiply eac monomial of the first polynomial by all the monimials of the second polynomial:

(x)(x²)+x(2x)-(x)(4) - (6)(x²) - (6)(2x) - (6)(-4)

x³+2x²-4x -6x²-12x+24

Ordering the similar monomials:

x³+(2x²-6x²)+(-4x - 12x)+24

Getting as result:

x³-4x²-16x+24

3 0

4 years ago

Work out the percentage change-decrease £77 by 70%

Dimas [21]

Answer:

£ 23.10

Step-by-step explanation:

100% - 70%

= 30%

If 100% = £ 77

What about 30%

30% × £ 77 ÷ 100%

= £2310 ÷ 100

= £ 23.10

6 0

3 years ago

Solve the second equation. 2x - y = 8 First, solve for (-y). --y =

kicyunya [14]

Answer:

$-y=-2x+8\\y=2x-8$

Step-by-step explanation:

To solve, first subtract 2x from both sides.

$2x-y=8\\-y=-2x+8$

You appear to want the solution for -y, so I've included it. Given that you also want the solution for y, divide both sides by -1.

$-y=-2x+8\\y=2x-8$

5 0

3 years ago

Which describes how triangle D was transformed to result in similar triangle D'? A. Dilation B. Rotation C. Reflection D. Transl

miss Akunina [59]

Answer:

its C

Step-by-step explanation:

5 0

3 years ago

I’ll give you brainliest for the first person with an answer

raketka [301]

Answer:

1296mm^2

Step-by-step explanation:

Surface Area of the Rectangular Prism to the left on top of the box:

Area of square = lw, 9mm * 9mm = 81mm, then multiply by 2 because 2 of the squares are a part of the surface, giving 162mm^2

Area of a rectangle =lw, 9mm * 9mm = 81mm, then multiply by 2 again, because 2 rectangles are a part of the surface, giving 162mm^2

So, the total surface area of the rectangular prism to the left on top, is 324mm^2

Surface Area of the Triangular Prism:

Area of a triangle: 1/2bh, and our base length would be 12, because we have to subtract 9 from 21 since the base length of the triangle isn't stated. Anyways, A = 1/2bh, so A = 1/2(12)(9) = 54mm^2, but multiply by two, so we get 108mm^2.

Area of the rectangle: lw, so 15mm * 9mm = 135mm^2

So, the total surface area of the triangular prism is 243mm^2

Surface Area of the Rectangular Prism at the bottom:

Area of the long rectangles in front = lw, 21mm * 9mm = 189mm^2, multiply by 2, 378mm^2

Area of the rectangles to the side = lw, 9mm * 9mm = 81mm^2, multiply by 2, 162mm^2

Area of the rectangle at the very bottom = lw, 21mm * 9mm = 189mm^2

So, the total surface area of the rectangular prism at the bottom is 729mm^2

Add all the total surface areas of each shape to get the total surface area of the figure:

324mm^2 + 243mm^2 + 729mm^2 = 1296mm^2

The surface area of the figure above is 1296mm^2

4 0

2 years ago