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fredd [130]
3 years ago
12

Which equation is related to 58 = x + 25?

Mathematics
1 answer:
jeka57 [31]3 years ago
3 0
A. x =33 ..................
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9a - 3 (a - 6) = -6 a=___
leonid [27]
9a - 3(a - 6) = -6...distribute thru the parenthesis
9a - 3a + 18 = -6....subtract 18 from both sides
9a - 3a = -6 - 18 ...combine like terms
6a = - 24...divide both sides by 6
a = -24/6
a = - 4
7 0
2 years ago
A rectangular box has a square base. The combined length of a side of the square base, and the height is 20 in. Let x be the len
aniked [119]

Answer:

a. V = (20-x) x^{2} in^{3}  

b . 1185.185 in^{3}

Step-by-step explanation:

Given that:

  • The height:  20  - x (in )
  • Let x be the length of a side of the base of the box (x>0)

a. Write a polynomial function in factored form modeling the volume V of the box.

As we know that, this is a rectangular box has a square base so the Volume of it is:

V = h *x^{2} in^{3}

<=> V = (20-x) x^{2}  in^{3}

b. What is the maximum possible volume of the box?

To  maximum the volume of it, we need to use first derivative of the volume.

<=> dV / Dx = -3x^{2} + 40x

Let dV / Dx = 0, we have:

-3x^{2} + 40x  = 0

<=> x = 40/3

=>the height h = 20/3

So  the maximum possible volume of the box is:

V = 20/3 * 40/3 *40/3

= 1185.185 in^{3}

7 0
2 years ago
What is the probability that a person who is above 35 years old has a hemoglobin level of 9 or above?
amm1812

Answer:

option C

0.531

Step-by-step explanation:

Given in the question,

total number of people of age 35 years = 162

Total number of people of age 35 and having haemoglobin 9 or above

162 - 76

86

probability  = 86/162

                   = 0.531

7 0
2 years ago
Read 2 more answers
Find the standard deviation of the sample ($23.14, $20.12, $56.21, $34.56, $43.74)
Shkiper50 [21]

Answer:

S.D=61.824137824783

Step-by-step explanation:

6 0
3 years ago
I NEED HELP ASAP PLEASE AND THANKS.
yanalaym [24]

Answer:

b=320; slope=-30

Step-by-step explanation:

if you look along the y-axis find the spot that the line intercepts and then that's b

now for the slope

find two points on the line, i chose(8 , 120) and (4 , 240)  

use the slope formula: y2-y1 over x2-x1

240-120=120 and 4-8= -4

so the slope is 120/-4 and that can be simplified to 30/-1 or -30

8 0
3 years ago
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