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Nikitich [7]
3 years ago
14

Student is evaluuating the expression below for n = 3.7. 12.8+6(n-0.5) in what order should the student do the steps?

Mathematics
2 answers:
algol [13]3 years ago
6 0
Step 2:do subtraction in the parentheses 
Step 3: distribute
Step 4: add
tester [92]3 years ago
3 0

Answer:b

Step-by-step explanation:

Step 2

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Find the product (a^2-b)(5a^2+6b)
Pie

Answer:

5a^​4​​+a^​2​​b−6b​^2​​

Step-by-step explanation:

1. Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd.

5a^4+6a^2b−5ba^2−6b^2

2. Collect like terms.

5a^4+(6a^2b−5a^2b)−6b^2

3. Simplify.

5a^4+a^2b−6b^2

7 0
3 years ago
What scale factor was applied to the first rectangle to get the resulting image? The answer is a decimal. The big rectangle is 2
Juli2301 [7.4K]
Scale factor is always (new/original)

so it depends which rectangle came first. if it started as large and was dilated to the smaller one, then the ratio is (.5/2.5) which simplifies to 1/5 or 0.2.
3 0
3 years ago
The expression below represents the number of trees planted by an environmental agency after t years.
Hatshy [7]
The initial number of trees is when t = 0:-
1500 * t^0  = 1500   so the answer is either a or c.
The value 1.02 represents a  2% increase  so the  answer is Option c.
3 0
3 years ago
Read 2 more answers
The cost of a pizza with the works" is represented as a function of its
Nina [5.8K]

Answer:

diameter of the pizza = 21.88 centimeters

Step-by-step explanation:

Given:

C = d^2 – 2d + 447

where

C = cost of the pizza

d = diameter of the pizza

If the pizza costs $12.00, then what is a reasonable estimate for the diameter of the pizza?

12 = d^2 – 2d + 447

d^2 - 2d = 447 - 12

d^2 - 2d = 435

d^2 - 2d - 435 = 0

Solve the quadratic equation using formula

a = 1

b = -2

c = -435

d = -b +or- √b^2 - 4ac / 2a

= -(-2) +or- √(-2)^2 - (4)(1)(-435) / 2(1)

= 2 +or- √4 - (-1740) / 2

= 2 +or- √4 + 1740 / 2

= 2 +or- √1744 / 2

= 2 +or- 4√109 / 2

= 2/2 +or- 4√109/2

= 1 +or- 2√109

d = 1 + 2√109 or d = 1 - 2√109

= 1 + 2(10.44) or d = 1 - 2(10.44)

= 1 + 20.88 or d = 1 - 20.88

d = 21.88 or -19.88

diameter of the pizza = 21.88 centimeters

Therefore, the estimated diameter of the pizza can not be negative. So, diameter of the pizza = 21.88 cm

7 0
2 years ago
F(x) = -x² – 10x + 16<br> Find f(-7)
Gala2k [10]

Answer:

-5

Step-by-step explanation:

or, f(x) = -x^2+10x+16

or, f(7) = (-7)^2+10*-7+16 (-7*-7=49)

=49-70+16

=65-70

=-5

5 0
3 years ago
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