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3 years ago

Simplify the following expression : 3 ( 5 - 12 ) + 4 divided 2.

Mathematics

2 answers:

Dmitry [639]3 years ago

5 0

Start by distributing the 3 across the parenthesis

15-36+4÷2

15-36+2

-21+2-19

your answer is A

I hope I've helped!

Cloud [144]3 years ago

4 0

15 - 36 + 2 = -21 + 2 = -19..... so therefore, its A.

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Jason works at Dell and earns $16.30 per hour for the first 40 hours of the week and then earn 1.5 times his regular rate. How m

REY [17]

Answer is $244.50 since he anything over 40 hours is time and a half

7 0

2 years ago

Read 2 more answers

Multiply:<br>(x+y)by (x+y)<br>a+b by a^2-b^2<br>(a+5) by (a^2-2a-3)<br>(a^2-ab+b^3) by (a+b)

Law Incorporation [45]

Answer:

Multiply:

$(x+y)by (x+y)$

$: \implies(x + y)(x + y)$

$: \implies \: x(x + y) + y(x + y)$

$: \implies {x}^{2} + xy + xy + {y}^{2}$

$: \implies{x}^{2} + 2xy + {y}^{2}$

Multiply:

$a+b \: by \: a^2-b^2$

$: \implies( {a}^{2} + {b}^{2} ) \times (a + b)$

$: \implies \: {a}^{2} (a + b) - {b}^{2} (a + b)$

$: \implies \: {a}^{3} + {a}^{2} b - {ab}^{2} - {b}^{3}$

Multiply:

$(a+5) by (a^2-2a-3)$

$: \implies{(a + 5) \times ( {a}^{2} - 2a - 3) }$

$: \implies \: a({a}^{2} - 2a - 3) + 5( {a}^{2} - 2a - 3)$

$: \implies(a \times {a}^{2} - a \times 2a - a \times 3) + (5 \times {a}^{2} - 5 \times 2a - 5 \times 3)$

$: \implies{a}^{3} - {2a}^{2} - 3a + 5 {a}^{2} - 10a - 15$

$: \implies{ {a}^{3} + {3a}^{2} - 13a - 15}$

Multiply:

$(a^2-ab+b^3) by (a+b)$

$: \implies{(a + b) \times ( {a}^{2} - ab + {b}^{3} )}$

$: \implies \: a( {a}^{2} - ab + {b}^{3}) + b( {a}^{2} - ab + {b}^{3} )$

$: \implies {a}^{3} - {a}^{2} b + a {b}^{3} + {a^2b} - {ab}^{2} + {b}^{4}$

$: \implies{ {a}^{3}+ab^3 - ab^2+ {b}^{4} }$

Step-by-step explanation:

$\blue{ \frak{Seolle_{aph.rodite}}}$

7 0

2 years ago

A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the

vampirchik [111]

Answer:
area = pi * (64x² + 32x + 4)
Using pi = 3.14:
area = 200.96 x² + 100.48 x + 12.56

Explanation:
We are given that:
area of sphere = 4 * pi * r²
radius = 4x + 1

Substitute with the radius in the given formula to get the area as follows:
area = 4 * pi * (4x+1)²
area = 4 * pi * (16x² + 8x + 1)
area = pi * (64x² + 32x + 4)

Using pi = 3.14:
area = 200.96 x² + 100.48 x + 12.56

Hope this helps :)

7 0

3 years ago

identify the coordinates of four points on the line with each given slope and y-intercept. slope=5 and that y-intercept =-1

mezya [45]

Well given these 2 pieces of information, we can easily obtain the equation for the line which would be the following :

Y = 5x - 1.

The 4 points including the y intercept:

(0,-1)
(1,4)
(2,9)
(3,14).

5 0

3 years ago

Read 2 more answers

Help ASAP Pythagorean tyoerem

marin [14]

Answer:

Step-by-step explanation:

Sides opposite to equal angles are equal.

x = 8

Pythagorean theorem,

y² = 8² + 8²

= 64 + 64

y² = 128

y = √128

y = 11.31

4 0

2 years ago