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algol [13]
3 years ago
12

Compare the expressions. Write , or = 21 - 3 + 8 31 - 14 - 6 =

Mathematics
1 answer:
Lisa [10]3 years ago
8 0

Answer:

990

Step-by-step explanation:

21-3=18, 18+831=1011, 1011-14=996, 996-6=990

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Which conditional and its converse form a true biconditional?
zloy xaker [14]
The answer is
<span>D) If x=19, then 2x-3=35
proof
</span>
If x=19,  2(19)-3=38-3=35  so <span> If x=19, then 2x-3=35 is verified
</span>if <span>2x-3=35, so </span><span>2x=35 + 3, </span><span><span>2x=38 implies x = 19, so x =19 is verified

</span> </span>
<span>If x=19 if and only if  2x-3=35 </span>
7 0
4 years ago
Read 2 more answers
GIVING BRAINLIEST PLS HELP :(
Kryger [21]

Answer:

d) not proportional

Step-by-step explanation:

the rate of change between the first two pairs of x-and-y values is 12/3, between the second pair it is 21/3, and 15/3 between the last pair

4, 7, and 5 are all different values so there is not one constant of proportionality

4 0
3 years ago
Find f(h(-1))<br> 2<br> -9<br> 11<br> -11
kumpel [21]

Answer:

  (d)  -11

Step-by-step explanation:

Each of the functions is evaluated in the usual way: put the number where the variable is in the expression and simplify.

  h(-1) = -2(-1)² -3(-1) +1 = -2 +3 +1 = 2

  f(2) = (2(2) +7)/(2 -3) = 11/-1 = -11

Then f(h(-1)) is ...

  f(h(-1)) = f(2) = -11

5 0
2 years ago
On a test, Leo is asked to completely factor the polynomial 3x3 – 3x + 5x2 – 5. He uses double grouping to get (x2 – 1)(3x + 5).
Step2247 [10]

Answer:

Leo does not  factored the polynomial completely.

3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Step-by-step explanation:

Given: On a test, Leo is asked to completely factor the polynomial

3x^3-3x+5x^2-5.

also, he uses double grouping to get (x^2- 1)(3x+5)

We have to explain whether he  factored the polynomial completely or not.

Consider the given polynomial 3x^3-3x+5x^2-5.

after double grouping he get (x^2- 1)(3x+5)

Also, we can simplify further ,

Using algebraic identity a^2-b^2=(a+b)(a-b)

We get,

(x^2- 1)=(x+1)(x-1)

We get, (x^2- 1)(3x+5)=(x+1)(x-1)(3x+5)

Thus, 3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Thus, He does not  factored the polynomial completely.

8 0
3 years ago
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Please if you can? Thanks
irina [24]

Answer: 12 cm = x

Step-by-step explanation:

5 0
4 years ago
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