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8090 [49]
3 years ago
10

Evaluate expression when r= 9 3 (5r-3)-2 (6r-7)

Mathematics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

47

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.


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fomenos
+6 ; 45,51
+ evens; 40,52
X -2; -64, 128
+ reducing squares 63+1/4, 63 +13/36
5 0
3 years ago
What two numbers have 2,3,5 as factors
lukranit [14]
Two numbers with factors 2,3,5 are 30 and 60.
when we multiply 2 x 3 x 5 = 30
we get answer 30 and then again multiply with the number that is greater than 1 is 2 and then we get 2 x 2 x 3 x 5 = 60
So the first two numbers with factors 2, 3 and 5 are 30 and 60.
4 0
3 years ago
In<br> given points.<br> 1. (10,4), (4, 15)<br> Find the slope of the line.
MrMuchimi

Answer:

m = -\frac{11}{6}

Step-by-step explanation:

Slope is rise over run.

\frac{15-4}{4- 10}=\frac{11}{-6} = \boxed{-\frac{11}{6}}

Hope this helps.

8 0
3 years ago
Find the number of units x that produces the minimum average cost per unit C in the given equation. C = 0.001x3 + 5x + 250
Ksju [112]

Answer:

50 units

Step-by-step explanation:

Find the number of units x that produces the minimum average cost per unit C in the given equation.

C = 0.001x³ + 5x + 250

unit cost f(x) = C/x

= 0.001x³/x + 5x/x+ 250/x

f(x) = 0.001x² + 5 + 250/x

f'(x) = 0.002x - 250/x²

We equate the first derivative to zero

0.002x - 250/x² = 0

0.002x = 250/x²

Cross Multiply

0.002x × x² = 250

0.002x³ = 250

x³ = 250/0.002

x³ = 125000

x = 3√(125000)

x = 50 units

Therefore, the number of units x that produces the minimum average cost per unit C is 50 units.

4 0
3 years ago
A rectangular prism has a volume of 40 cm cubed. The height of the prism is 8 cm. The length is 4 cm longer than the width and t
Alekssandra [29.7K]
<span>V = L,w,h 
w = width 
w - 2 = height 
w + 4 = length 
8(w + 4) = V 

8(w + 4) = w(w - 2)(w + 4) 

Solve for w <span>Answer = -2 </span></span>
8 0
3 years ago
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