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morpeh [17]
2 years ago
9

Complete the work shown to answer the question.

Mathematics
2 answers:
harkovskaia [24]2 years ago
5 0

Answer:

Since 7 and 11 are both rational the sum and the difference are rational .

Step-by-step explanation:

hjlf2 years ago
4 0

Answer:

The correct answer is A. on edge

Step-by-step explanation:

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Find the domain and range with a vertex of (1,-2)
klemol [59]

Answer:

see explanation

Step-by-step explanation:

the domain ( values of x ) that a quadratic can have is all real numbers

domain : - ∞ < x < ∞

the range ( values of y ) are from the vertex upwards , that is

range : y ≥ - 2

3 0
2 years ago
rice that costs $480 which is for 8 members is used 20 days. What is the cost of rice which is required for 12 members for 15 da
Ber [7]

Answer:

$540

Step-by-step explanation:

1 member 1 day :$480/80/20 = $3

12 members 15 day = $3 * 12 * 15 = $540

Hope this helps!!!

5 0
3 years ago
What is the scale factor from small triangle to the larger triangle
Lyrx [107]

Answer:

scale factor = 3

Step-by-step explanation:

The scale factor is the ratio of corresponding sides, larger to smaller.

scale factor = \frac{BC}{TB} = \frac{12}{4} = 3

7 0
2 years ago
Use the order of operations to evaluate the expression below.<br> 5 + 7 • 2 - 90 / 3 + 8 - 1
Law Incorporation [45]
First Multiply 7x2 witch is 14 then divide -90 by 3 witch is -30 so now make your new equation 5+14-30+8-1 witch the answer is -4
3 0
2 years ago
Suppose that the dollar cost of producing x radios is c(x) = 400 + 20x - 0.2x 2. Find the marginal cost when 30 radios are produ
My name is Ann [436]
C(x) = 400 + 20x - 0.2x²

c(30) = 400 + 20(30) - 0.2(30)²

= 400 + 600 - 0.2(900)
= 1000 - 180
= 820

It costs $820 when 30 radios are produced. 

Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two. 

c(31) = 400 + 20(31) - 0.2(31)²

= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.

Now we find the difference which means we subtract the two. 

828 - 820 = 8. 

Your marginal cost is $8. 

To compare we can also do 29 radios. 

c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812

820 - 812 = 8. 
7 0
3 years ago
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