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posledela
3 years ago
8

A total of 250 people were surveyed about whether or not each person carries a cell phone.

Mathematics
1 answer:
blagie [28]3 years ago
3 0
Uh
Thsi is too much
Can you send an image of the problem
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(1.5×10^3)+(2.5×10^2) in standard form​
Tcecarenko [31]

Answer: 2.65·10^-2

Step-by-step explanation. : 1.5·10^-3= 0.0015 and 2.5·10^-2= 0.025.

Sum is 0.0265

7 0
3 years ago
a farmer wants to fence in three sides of a rectangular field shown below with 960 feet of fencing. The other side of the rectan
Alika [10]

9514 1404 393

Answer:

  240 ft by 480 ft

Step-by-step explanation:

Area is maximized when the long side is half the total length of the fence. That makes the short side (out from the river) be half the length of the long side.

The fenced field dimensions are 240 feet by 480 feet.

__

You can let x represent the length of the long side. Then the length of the short side is half the remaining fence: (960 -x)/2.

The total area is the product of these dimensions:

  A = x(960 -x)/2

We note that this is the equation of a parabola with zeros at x=0 and x=960. The maximum will be found on the line of symmetry, halfway between the zeros. That is at x = (0 +960)/2 = 480.

The area is maximized for a long-side dimension of 480 feet. The short sides are 240 feet.

3 0
3 years ago
Which is the value of this expression when X=-2
e-lub [12.9K]
A) x^2 +x -30 = 0 is factored by looking for two factors of 30 that differ by 1. We know ...  30 = 1*30 = 2*15 = 3*10 = 5*6The last two factors differ by 1, so we can factor the trinomial as  (x +6)(x -5) = 0
b) The solutions are found by finding values of x that make these factors zero. The only way the product will be zero is if one or more of the factors is zero.  x + 6 = 0  x = -6 . . . . . subtract 6
  x - 5 = 0  x = 5 . . . . . add 5
The solutions are x = -6 or x = 5These are the values of x that will satisfy the equation (make it true). What they mean depends on the meaning of the variable and the situation the equation is a model of.
6 0
3 years ago
Can someone help me ASP.
Ivahew [28]

Answer:

The anwsers are

a- trapezoid

b- 6

8 0
3 years ago
Read 2 more answers
You borrow $2,000 for a period of 4 years. You are charged simple interest at a rate of 3%. How much will you repay at the end o
MariettaO [177]

Answer:

2

Step-by-step explanation:

2

6 0
3 years ago
Read 2 more answers
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