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lara [203]
3 years ago
12

Identify a, b and c in the quadratic equation. -x2 + 31x + 7 = 0

Mathematics
1 answer:
Anna [14]3 years ago
4 0

Answer:

a is -1

b is 31

c is 7

Step-by-step explanation:

-x^2+31x+1=0

ax^2+bx+c=0

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If a hen and a half lay an egg and a half in a day and a half, how many eggs will half a dozen hens lay in half a dozen days?
BlackZzzverrR [31]

Answer:

72 eggs

Step-by-step explanation:

Let’s simplify the answer: if one and a half hens lay an egg in 18 hours, how many eggs will 6 hens lay in 6 days? So 18/3=6, and 6x2=12. One hen can lay an egg in 12 hours. Which means a hen can lay 2 eggs in one day. 2x6=12. So 6 hens can lay 12 eggs in one day. 12x6=72. In 6 days, 6 hens can lay 72 eggs

Oh I answered first btw if you’re wondering later

5 0
3 years ago
Read 2 more answers
Explain how to model 3 groups of 6.
xxMikexx [17]
Lets say groups = g

3 groups of 6 is 

3(g) =6

3g/3  = 6/3

g = 2

there are 2 in each group

hope this helps
4 0
3 years ago
What is .125 times 2 but in fraction form?
liubo4ka [24]
1/4 one fourth is the answer to your question
5 0
4 years ago
Read 2 more answers
Witch is longer distsance 20% of 320 miles of 1/2of 130 you must show your working out
Paladinen [302]

Answer: \frac{1}{2}\ \text{of}\ 130> 20\%\ \text{of}\ 320

Step-by-step explanation:

20\%\ \text{of}\ 320\ \text{is}\\\Rightarrow \frac{20}{100}\times 320=64\ \text{miles}

\frac{1}{2}\ \text{of}\ 130\ \text{is} \\\Rightarrow \dfrac{130}{2}=65\ \text{miles}

clearly,  \frac{1}{2}\ \text{of}\ 130> 20\%\ \text{of}\ 320

7 0
3 years ago
Chakara makes a rectangular tablecloth that is 3.5 meters long and 1.5 meters wide. What is the area of the tablecloth.
yarga [219]

Answer:

Area of the rectangular cloth = 5.25\,m^2

Step-by-step explanation:

Length of the cloth= 3.5\,m

Width of the cloth =1.5\,m

Area of the rectangular cloth is:

          Length\times Width

       Area =3.5\times 1.5\\\\=5.25\,m^2

The area of the rectangular cloth with the given dimensions is:

              5.25\,m^2

3 0
3 years ago
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