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2 years ago

Please help now, I will give Brainliest!!! :D

Mathematics

1 answer:

Jobisdone [24]2 years ago

8 0

Answer: $573.50

Step-by-step explanation:

40hrs x $7.25 per hour= $290 per week
$21 x 0.15 = $3.15
$3.15 x 90 tables per week = $283.50
$283.50 + $290 = $573.50

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What is the area of this figure?

MissTica

Okay so here's what you do. The arrows mean the the sides are the same length so the > line is 20in. And then they cut this up into 2 triangles and a trapezoid. BUT If you look closely 1 of the Triangles and the Trapizoid make a Parallelogram. The formula for finding the area of a Paralellogram is just b*h. So then you just need to find the area of the other triangle which would be 8*20/2 (the formula is b*h/2 for triangles) and then you add those to answers together. (So it's 20*16+8*20)

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3 years ago

The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se

Rina8888 [55]

Answer:

Step-by-step explanation:

$x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}$

$.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}$

3 0

3 years ago

Subtract 8xy+3 from 15xy +9

geniusboy [140]

Answer:

7xy + 6

Step-by-step explanation:

=> here's your solution

=>. we need to subtract (8xy + 3) from

( 15xy +9 )

=> (15xy + 9) - ( 8xy + 3)

=>. 15xy + 9 - 8xy - 3

=> 15xy - 8xy + 9 - 3

=>. 7xy + 6

hope it helps

7 0

3 years ago

A cylinder has a radius of 6 centimeters and a height of 18 centimeters. A smaller cylinder has linear dimensions that are one-t

vlabodo [156]

Answer:

the larger cyclinder has a surface area which is 9 times the surface area of the smaller cyclinder.

Step-by-step explanation:

Surface area of larger cyclinder

Radius = 6cm

Height = 18cm

A = 2πrh + 2πr^2

= 2*3.14*6*18 + 2*3.14*6^2

= 678.24 + 226.08

= 904.32 cm

Smaller cyclinder (1/3 of the larger cyclinder)

Radius = 2cm

Height = 6cm

A = 2πrh + 2πr^2

= 2*3.14*2*6 + 2*3.14*2^2

= 75.36 + 25.12

= 100.48 cm

Comparing the surface area of the larger cyclinder and the smaller cyclinder

= 904.32 cm / 100.48 cm

= 9

This means, the larger cyclinder has a surface area which is 9 times the surface area of the smaller cyclinder.

5 0

3 years ago

Explain the purpose of statements

joja [24]

There is no picture.

5 0

3 years ago