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Vlad [161]
3 years ago
11

How many solutions per each equation?

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
4 0
Assuming y=ax²+bx+c, calculate D = b²-4ac, D<1: no solutions; D=0: 1 solution; D>0: 2 solutions.

1-4*-3*12 = 145, so 2 solutions
36-4*2*5 = -4, no solutions
49-4*-11 = 5, so 2 solutions
64-4*-1*-16 = 0, so 1 solution
You might be interested in
)) Omar used 28 centimeters of tape to wrap 4 presents. How much tape will Omar need in
pav-90 [236]

Answer:

He would need 42 cm *or 14cm

Step-by-step explanation:

28/4 is 7

that means that he used 7 cm of tape per present

6 x 7 is 42

that means that he would need 42 cm of tape

4 to 28

6 to 42

*If he already has 4 presents done and he needs to 2 more present then he would need 14 cm, 2 x 7 is 14

8 0
4 years ago
I am a part of a whole I am greater than 3/4 but less than 9/10. I am a decimal with 3 in the hundredths place. What number am I
Alborosie

Answer:

"You" are 0.83.

(Alternative fraction version: 83/100)

Step-by-step explanation:

First, let's turn 3/4 and 9/10 into decimals.

3/4 becomes 0.75, and 9/10 becomes 0.9.


We know that it has to be a decimal, and we also know it must be greater than 0.75 but less that 0.9.


It can't be 0.73, since that's less than 0.75. It also can't be 0.93, since that's over 0.9. That means we're left with 0.83.

Our final answer is 0.83, AKA 83/100.

8 0
3 years ago
11th grade algebra helpp
Alja [10]
11x12-(-8)x(-1)
132+8x(-1)
132-8
124
7 0
3 years ago
Help me i give brainliest.
svetoff [14.1K]
310 >_ (greater than or equal to) 35x + 9
- 9 -9
301 >_ 35x
/35 /35
8.6 >_ x
Since 8.6 is not a whole number, the answer for the second part is
X<_(less than or equal to) 8
3 0
3 years ago
30 points if you answer this question and please show work !!
worty [1.4K]
I don't know what is between f(x) and g(x), so (for now) there are two posible answers:

1. f(x)g(x) = f(x)\cdot g(x) - function multiplication:

f(x)g(x)=(2x-3)\cdot(3x+8)=2x\cdot3x+2x\cdot8-3\cdot3x-3\cdot8=\\\\=6x^2+16x-9x-24=\boxed{6x^2+7x-24}

2. f(x)g(x)=f(x)\circ g(x) - function composition:

f(x)g(x) = f(x)\circ g(x) = f\big(g(x)\big)=2(3x+8)-3=2\cdot3x+2\cdot8-3=\\\\=6x+16-3=\boxed{6x+13}


5 0
3 years ago
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