After paying 9 dollars for the pie, Keith has 52 dollars left.How much money did he have before buying the pie?

Answers

Answer 1

Answer:

Answer: he had $61

Step-by-step explanation: 52+9=61

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What is greater 500 in or 40 ft

Answers

What is greater? 500in or 40 ft

First let's set up a proportion:

1 foot = 12 inches

Ok, now that we setup our proportion lets figure out which one is greater
(please note that y is a variable):

five hundred inches:

y feet= 500/12
y feet = 41.6

Therefore 41.6 feet = 500 inches, and 41.6ft is greater than 40 ft
So 500 inches is greater

agnes and simore spend 2 hours painting 34 miniature figures that they use to create artistic scenes agnes paints 14 figurines what is the average rate at which samone paints figurines ?

Answers

Answer:

Samone paints 20 figurines in 2h or 120min

average speed at which Samone paints figurines: 120/20 = 6min

she paints at a speed of 6min/figure

Step-by-step explanation:

Solve for x:
-2x(x-3)=-11 (correct two decimal place)

Answers

-2x(x-3) = -11

-2x(x) -2x(-3) = -11
-2x² + 6x = - 11
-2x² + 6x + 11 = 0

Let us use the quadratic formula in solving for the value of x.

-2x² + 6x + 11 = 0

a = -2 ; b = 6 ; c = 11

x = (-b + √b² -4ac) ÷ 2a

x = (-6 + √6² - 4(-2)(11)) ÷ 2(-2)
x = (-6 + √36 + 88) ÷ -4
x = (-6 + √124) ÷ -4
x = (-6 + 11.14) ÷ -4
x = 5.14 ÷ -4
x = -1.285 or -1.29

x = (-6 - 11.14) ÷ -4
x = -17.14 ÷ -4
x = 4.285 or 4.29

If a + b = 28 and a - b = 10, then b =?

Answers

Answer:

b=9

Step-by-step explanation:

If D varies directly with t and D is 105 when t is 3, find D when t is 8

Answers

Answer:

Value of D when t is 8 is:

280

Step-by-step explanation:

If D varies directly with t

⇒ D=kt for some constant k

D is 105 when t is 3

⇒ 105=3k

⇒ k=105/3

⇒ k=35

⇒ D=35t

when t=8

D=35×8

⇒ D=280

Hence, Value of D when t is 8 is:

280

105÷3=35 so you would do 8×35 and get 280

Solve the system:
2x-5y=7
3x-2y=-17

Answers

$\begin{cases}2x-5y=7 \ \ /*3 \n 3x-2y=-17\ \ / *(-2) \end{cases}\n \n\begin{cases}6x-15y=21 \n -6x+4y= 34 \end{cases}\n+ \ ------- \n-11y=55 \ \ / :(-11)\n \ny=-(55)/(11)$

$y=-5 \n \n 2x-5y=7\n \n2x-5*(-5)=7\n \n2x+25=7\n \n2x=7-25$

$2x=-18\ \ /:2 \n \n x=-(18)/(2) \n \nx=-9 \n \n\begin{cases} x=-9 \n y=-5 \end{cases}$

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