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3 years ago

Please help meeeeeeeee

Mathematics

2 answers:

leonid [27]3 years ago

7 0

B; make sure to make the denominators equal before adding

Akimi4 [234]3 years ago

5 0

Answer:

its b!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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To kick off the summer, Colton is planning a "School's Out!" party for all his friends. He and his mom pick up a giant sub and a

marshall27 [118]

Answer:

(a)6 feet

(b)24 sections

Step-by-step explanation:

(a)We are required to find the length of the Giant Sub.

If each section is 1/3 of a foot long and there are 18 equal parts.

Length of the Giant Sub =

Length per Section X Number of Sections

= 1/3 X 18 = 6 feet

(b)If each section is 1/4 of a feet long

Length of the Giant Sub =

Length per Section X Number of Sections

6= 1/4 X Number of Sections

Number of Sections =6 X 4 =24 sections

4 0

3 years ago

An aquarium has dimensions 2x feet, (x – 1) feet, and (x + 2) feet. The aquarium volume must be no more than 280 cubic feet.

Lina20 [59]

Answer:

$x^3+x^2-2x\leq140$

Step-by-step explanation:

This is an algebra problem, and we are expected to inequality for the volume of the aquarium.

Given that the

length= 2x

width=(x – 1)

heigth= (x + 2)

and the volume= 280 ft^3

the inequality expression for the volume is

$2x*(x -1) * (x + 2) \leq 280\\\\$

open the brackets

$2x*(x -1) * (x + 2) \leq 280\\\\(2x^2-2x)*(x+2)\leq 280\\\\\2x^3+4x^2-2x^2-4x\leq 280\\\\\2x^3+2x^2-4x\leq280$

divide through by 2 we have

$x^3+x^2-2x\leq140$

5 0

3 years ago

Read 2 more answers

(assume no variable equals 0) PLEASE HELP

saw5 [17]

$(3n^2 + 1) + (8n^2 - 8)\\= 3n^2 + 1 + 8n^2 - 8\\= 11n^2 - 7$

5 0

3 years ago

Rlly need help with Linear equations in any form ;-;

S_A_V [24]

Answer:

y = -x - 2

Step-by-step explanation:

Find two points on the line

(0, -2)

(4, -6)

(Y2-Y1)/(X2-X1) = gradient of the line

Where (X1,Y1) = (0, -2) and (X2,Y2) = (4, -6)

(-6--2)/(4-0)

(-6+2)/4

(-4)/(4)

-1

Y = (-1)X + c

Substitute either set of coordinates in to find c.

(0, -2)

Y = (-1)X + c

-2 = (-1)0 + c

-2 = 0 + c

-2 = c

(4,-6)

Y = (-1)X + c

-6 = (-1)4 + c

-6 = -4 +c

-6 + 4 = c

-2 = c

Y = -X -2

6 0

3 years ago

A segment with endpoints A (3, 4) and C (5, 11) is partitioned by a point B such that AB and BC form a 2:3 ratio. Find B.

Dima020 [189]

Answer:

(3.8, 6.8)

Step-by-step explanation:

Point B:

Has coordinates (x,y)

AB and BC form a 2:3 ratio.

This means that:

$B - A = \frac{2}{2+3}(C - A)$

$B - A = \frac{2}{5}(C - A)$

We apply this both for the x-coordinate and for the y-coordinate.

x-coordinate:

x-coordinate of A: 3

x-coordinate of C: 5

x-coordinate of B: x

$B - A = \frac{2}{5}(C - A)$

$x - 3 = \frac{2}{5}(5 - 3)$

$x - 3 = \frac{4}{5}$

$x = 0.8 + 3 = 3.8$

y-coordinate:

y-coordinate of A: 4

y-coordinate of C: 11

y-coordinate of B: y

$B - A = \frac{2}{5}(C - A)$

$y - 4 = \frac{2}{5}(11 - 4)$

$y - 4 = \frac{14}{5}$

$y = 2.8 + 4 = 6.8$

Thus the correct answer is:

(3.8, 6.8)

7 0

3 years ago

Read 2 more answers