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snow_lady [41]
4 years ago
5

I need help on all of the please help

Mathematics
1 answer:
yanalaym [24]4 years ago
7 0
7. G
8. F
9. H
10. A
ll. C
12. E
13. D
14. B
15. 3×4+0.95
16. (240+360)÷100
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7+42x3^2-3a=14x3^-2a+7
IgorC [24]

the answer is C a=3 for this equation

7 0
3 years ago
Add. 2.60 3.56 3.82 5.116 5.16 6.16
UNO [17]
2.60 + 3.56 = 6.16

6.16 + 3.82 = 9.98

9.98 + 5.116 = 15.096

15.096 + 5.16 = 20.256

20.256 + 6.16 = 26.416

The final answer is 26.416
6 0
3 years ago
Read 2 more answers
Which of the following points is in the solution region to the inequality: 2x + 3y ≤ -5
noname [10]
I believe the answer is (2, 2)
5 0
3 years ago
A fence is to be built to enclose a rectangular area of 800 square feet. The fence along three sides is to be made of material t
myrzilka [38]

Answer:

dc/dx = 0 when x = 20. hence fence is 20×40

Step-by-step explanation:

Given data:

Rectangular Area = 800 ft^2

three side material cost = $5 per ft

fourth side material cost is $15 per ft

let expensive side is x and other dimension assume to be y

Then cost is c

c = 5(x+ 2y) + 15 x

xy = 800, so y = 800/x

c =5(x+ 1600/x^2) + 15x

for minimum when dc/dx = 0

\frac{dc}{dx} = 5(1-\frac{1600}{x^2}) + 15 = 0

5(1-\frac{1600}{x^2}) +  15 = 0

(1-\frac{1600}{x^2}) + 3 = 0

(1-\frac{1600}{x^2}) = - 3

x^2 - 1600 = -3x^2

4x^2 - 1600 = 0

(2x-40)(2x+40) = 0

x = 20

dc/dx = 0 when x = 20. hence fence is 20×40

3 0
4 years ago
Write the quadratic equation whose roots are - 6 and -4, and whose leading coefficient is 4.
Advocard [28]

Answer:

Step-by-step explanation:

y=4(x+6)(x+4)

y=4(x^2+10x+24)

3 0
3 years ago
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