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Dominik [7]
3 years ago
10

2x - 7 -+1=3x - 4 4 .

Mathematics
1 answer:
vesna_86 [32]3 years ago
5 0

Answer:

x = 0.4

Step-by-step explanation:

Move the 1 on the left to the right

This would result in

(2x - 7)/4 = 1 + 3x - 4

Solving this would result in

(2x- 7)/4 = 3x - 3

Move the 4 to the right

Solving this would result in:

2x - 7 = 12x - 3

Now, it is just basically solving for x

2x - 12x = -3 +7

-10x = -4

x  = 0.4

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You have been asked to design a rectangular box with a square base and an open top. The volume of the box must be 500cm3. Determ
babymother [125]

Answer:

x = 10 cm, y = 5 cm gives a minimum area of 300 cm^2.

Step-by-step explanation:

V= x^2y = 500

Surface area A = x^2 + 4xy.

From the first equation y = 500/x^2

So substituting for y in the equation for the surface area:

A = x^2 + 4x * 500/x^2

A = x^2 + 2000/x

Finding the derivative:

dA/dx = 2x - 2000x^-2

dA/dx = 2x - 2000/x^2

This = 0 for a minimum/maximum value of A, so

2x - 2000/x^2  = 0

2x^3 - 2000 = 0

x^3 = 2000/ 2 = 1000

x = 10

Second derivative is  2 + 4000/x^3

when x = 10  this is positive so x = 10 gives a minimum value of A.

So y =  500/x^2

= 500/100

= 5.

6 0
3 years ago
Find C, the total of the payments, and the monthly payment. Choose the correct answers. 2yc Interest(n) = m(n+1)
vivado [14]

Answer:

"$66.5

Step-by-step explanation:

The cost, including tax, amounts to $850.00.

Down payment =$150

Amount after paying down payment = $850-$150=$700

Interest rate = 14 %

So, interest on $700 =

So, c = $98

Total payment = amount financed + c  = 700+98=$798

Now Joe finances the grill over 12 months

So, no. of payments = 12

Now Monthly payment = Total of payments ÷ number of payments

                                      =798 ÷ 12

                                      =$66.5

Hence Joe's monthly payments (principal plus interest) is $ 66.5" i quoted so give the other person brainliest!

Step-by-step explanation:

8 0
2 years ago
Help please??????????????
11111nata11111 [884]

Answer:

9.8

Step-by-step explanation:

a geometric sequence means we multiply the previous element by a certain factor to get the next element.

so, all we need to do is determine the factor used to go from one element in the list to the next.

a1 = 9

a2 = 88.2

a3 = 864.36

a4 = 8470.728

the simplest case is usually the case from a1 to a2.

a2 = a1×f

88.2 = 9×f

f = 88.2/9 = 9.8

we are finished here.

but we can control our result and verify with the other given elements.

88.2 × 9.8 = 864.36

and that is a3. fits.

864.36 × 9.8 = 8470.728

and that is a4.

so, all fits, we are correct.

8 0
2 years ago
Read 2 more answers
1 point
ahrayia [7]

Answer:

13818

I think that is your answer

5 0
3 years ago
Translate the given phrase into an algebraic expression and simplify if possible: the sum of -8 and -9, increased by 23.
Maru [420]

Step-by-step explanation:

(-8-9)+23

-17+23

6.........

7 0
3 years ago
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