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3 years ago

Please help! What is the discriminant D of the equation? a^2-2a+5=0

Mathematics

1 answer:

miskamm [114]3 years ago

5 0

Anybody know? I need this

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How to solve this problem

lozanna [386]

Answer:

Step-by-step explanation:

We are given the equation 3 - 4x - 2 = 2x - 11;

$3 - 4x - 2 = 2x - 11,\\3 - 2 = 6x - 11,\\1 = 6x - 11,\\12 = 6x,\\\\x = 2\\Conclusion, x = 2$

If you want this explanation in a " statement reasoning " format refer to the attachment below;

8 0

3 years ago

Please please help me in these questions

boyakko [2]

a. a=40° (alternate interior angles)

b+40°=180°( supplementary angles)

b=140°

c= d= 140°( vertically opposite angles)

d=b=140°( corresponding angles)

b. 2a+120°=180° (supplementary angles)

2a=60°

a=30°

c. a+110°=180°( supplementary angles)

a=70°

b+70°=180°( supplementary angles)

b=110°

c+110°=180°( supplementary angles)

c=70°

c=d=70( corresponding angles)

3 0

2 years ago

Sally went to the clearance rack at a department store and found a shirt she wanted to buy. The shirt was $36.00 and is on sale

jeka57 [31]

Answer:

33.34%.

Step-by-step explanation:

Given that,

The actual price of the shirt = $36

Price on sale = $24

We need to find the percent of the decrease. The formula for the percentage is given by :

$\%=\dfrac{|\text{actual value-estimated value}|}{\text{actual value}}\times 100$

Putting all the values,

$\%=\dfrac{24-36}{36}\times 100\\\\=33.34\%$

So, the percentage decrease in the price of the shirt is 33.34%.

6 0

3 years ago

What lengths are proportional to 4.5 and 1.5

alexgriva [62]

3

1.5 and 4.5 all are divisible by 1.5. Then you just have to find another number that is as well. I chose 3. Theres also 6, 7.5,9,10.5,12

8 0

3 years ago

I need help I have been stuck for an hour

Alla [95]

Answer:

same here, i cant figure it out.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers