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3 years ago

Help me please............

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

It would be 6x+40
:)

sp2606 [1]3 years ago

4 0

Answer:

40+6x

Step-by-step explanation:

11+11+9+9=40 x*x*x*x=x 3x+3x =6x bring the 6x down and it will be 6x+40

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Factorise (3a - b)(a + b) - (3a - b)²

vredina [299]

Answer:

−6a^2+8ab−2b^2

Hope this helps

Pls give brainliest

Have a nice day :D

5 0

3 years ago

Read 2 more answers

A rectangular pool 18 meters by 12 meters is surrounded by a walkway of width x

vesna_86 [32]

Answer:

x=3 meters

Step-by-step explanation:

step 1

Find the area of the rectangular pool

$A=LW$

we have

$L=18\ m\\W=12\ m$

substitute

$A=18(12)=216\ m^2$

step 2

Find the area of rectangular pool including the area of the walkway

Let

x ----> the width of the walkway

we have

$L=(18+2x)\ m\\W=(12+2x)\ m$

substitute

$A=(18+2x)(12+2x)$

step 3

Find the area of the walkway

To find out the area of the walkway subtract the area of the pool from the area of rectangular pool including the area of the walkway

$A=(18+2x)(12+2x)-216$

step 4

Find the value of x if the area of the walkway equal the area of the pool

$(18+2x)(12+2x)-216=216$

Solve for x

$(18+2x)(12+2x)=432\\216+36x+24x+4x^{2}=432\\4x^{2} +60x-216=0$

Solve the quadratic equation by graphing

The solution is x=3 meters

see the attached figure

8 0

4 years ago

Find the volume of the composite figure.

SIZIF [17.4K]

Answer: 290 cubic meters

Step-by-step explanation: First, find the volume of each figure. 3 x 6 x 5 = 90, and 5 x 5 x 8 = 200. 90 + 200 = 290

5 0

3 years ago

Y = 2x + 3

mario62 [17]

The answer is no solutions

4 0

3 years ago

Susan is a waitress at the country club restaurant. She receives an automatic 15% tip which is added to the members check for th

wariber [46]

Answer:

$91.75

Step-by-step explanation:

She earns $2.15 an hour and worked 20 hours this week so

20 × 2.15 = 43 and she earned 15% tip off the meals she served

to calculate how much 15% of 325 does we multiply 325 with 15 and divide it with 100

325 × 15 ÷ 100 = 48.75

48.75 + 43 = 91.75

3 0

3 years ago