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Oksanka [162]
4 years ago
10

What are zeros of f(x) = (x-3)(x+8)?

Mathematics
1 answer:
Oduvanchick [21]4 years ago
5 0

Answer:

The zeros are -8,3

Step-by-step explanation:

We can use the zero product property which says set each of the factors equal to zero

0 = (x-3)(x+8)

x-3 = 0               x+8 = 0

x-3+3=0=3          x+8-8 = 0-8

x= 3                     x = -8

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the rectangle shown has a perimeter of 70cm and the given area. It’s length is 8 more than twice it’s width. Write and solve a s
vfiekz [6]

Dimensions of rectangle are:

Length = 26 cm

Width = 9 cm

Step-by-step explanation:

Perimeter of rectangle = 70 cm

Width= x

Length = 2x+8

We need to find the value of length and width of rectangle.

The formula used is:

Periemter\,\,of\,\,rectangle=2(Length+Width)

Putting values:

Periemter\,\,of\,\,rectangle=2(Length+Width)\\70=2(2x+8+x)\\70=2(3x+8)\\70=6x+16\\70-16=6x\\54=6x\\x=54/6\\x=9

So, Value of Width = x = 9 cm

Value of Length = 2x+8 = 2(9)+8 = 18+8=26 cm

So Dimensions of rectangle are:

Length = 26 cm

Width = 9 cm

Keywords: Perimeter of rectangle

Learn more about Perimeter of rectangle at:

  • brainly.com/question/6594923
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6 0
4 years ago
What expression can be used to determine the total cost of buying c pounds of cashews for $3.15
tester [92]

Answer:

A. 3.15c + 0.82f

Step-by-step explanation:

c pounds of cashews for $3.15 = 3.15c

f pounds of flour for $0.82 = 0.82f

then, the expression can be used to determine the total cost is:

A. 3.15c + 0.82f

5 0
2 years ago
Students in 10th and 11th grade were asked whether they have a job. The raw data was converted to relative frequencies and recor
Softa [21]

Answer:

a)- Given that a student is a 10th grader, there is a 14% chance he or she has a job.

Step-by-step explanation:

Option (a) is correct here because Relative frequency means the probability of occurrence or number of time-specific event occurs to the total event.

Option (b) is not correct because We already know that student is in 10th or 11th grade, after that we get to know about 14% chance.

Option (c) & (d) are clearly not possible.

5 0
3 years ago
Read 2 more answers
Find the slope of the line y= -2/3x
kodGreya [7K]
The slope is -2/3.
_______________________________


Explanation:

y=mx+b

m= slope

-2/3=m
3 0
3 years ago
“Express each of the following numbers using scientific notation “
avanturin [10]

11. 1.97 * 10^-6

12. 3.5 * 10^-3

13. 2.28 * 10^13

14. 5.302 * 10^-3

15. 1.64 * 10^1

16. 9.85 * 10^-1

Can you see the pattern?

Try the rest yourself

5 0
3 years ago
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