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disa [49]
3 years ago
7

If f(x) = 2x²+1 and g(x) =x²-7find (f-g)(x)

Mathematics
1 answer:
Karolina [17]3 years ago
7 0
(2x^2-x^2)= x^2
(1+7) = 8

X^2 + 8
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Reduce to simplest form.
BigorU [14]
Convert 3 6/2 to an improper fraction so: 12/2
convert 2 4/5 to 14/5 
multiply the numerators of the improper fractions so 12*14, which is 168.
multiple the denominators so 2*5, which is 10.
the new fraction is 168/10, so you divide 168 divided by 10, which is 16.8, or 16 4/5.
8 0
3 years ago
Select the counterexample to this conjecture:
vredina [299]
The answer is .90º + 90º = 180º, <span>.90º  is not an obtuse angle</span>
4 0
3 years ago
Find area and perimeter​
alisha [4.7K]

Answer:

Perimeter

P = P1+P2

P1 = 4a           P2=2(a+b)

P1=4*5           P2=2(3+5)

P1=20            P2=2*8

                     P2=16

P = 20+16

P=36

Area

A=A1+A2

A1=a^{2}                 A2=a*b

A1=5^{2}                 A2=3*5

A1=25                A2=15

A=25+15

A=40

5 0
3 years ago
Ms. Wall will roll two number cubes. What is
bonufazy [111]
Probability of rolling a sum of 9 or a sum that is even from two number cubes is
11/18
Explanation:
When a dice is rolled there are different ways in which
9. can be obtained, which are (3,6) or (4,5) or (5,4) or (6,3). 4 options. As in all there are
6⋅6=36 options, probability is 4/36 or 1/9.

For getting an even number as sum, we can have (1,1) or (1.3) or (1,5) or (2,2) or (2,4) or (2,6) or (3,1) or (3,3) or (3,5) or (4,2) or (4,4) or (4,6) or (5,1) or (5,3) or (5,5) or (6,2) or (6,4) or (6,6) 18 options, probability is 18/36 or 1/2.

Note that the two events (getting 9 or even sum) are mutually exclusive, the probabilities can be just added i.e. combined probability is
1/9+1/2=2+9/18i.e. 11/18
8 0
2 years ago
Please help asap there both together
lana66690 [7]

Step 2 , supposed to be 4^-15 instead of 4^-2. Always multiply the exponents together.

Answer: Chris made a mistake in step 2 -C

4 0
3 years ago
Read 2 more answers
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