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ki77a [65]
3 years ago
10

25x^2+20x+4=0 solve by factoring pls show work (50points)

Mathematics
1 answer:
Inessa [10]3 years ago
6 0
X= -2/5

SOLUTION
25x^2 + 20x + 4 = 0
(5x + 2)^2 = 0
5x + 2 = 0
x= -2/5

Hope this helps! :))
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As a motivational speaker, Bree speaks at school assemblies, charging a school
Oksi-84 [34.3K]

Answer:

<em>Bree spoke at 55 assemblies in this district.</em>

Step-by-step explanation:

Bree speaks at school assemblies charging a school district a total cost C modeled by the equation:

C(a) = 50a+1,500

Being a the number of assemblies attending the meeting.

It's given Bree charged the Escambia City School District $4,250  to speak at school assemblies.

We can find the number of assemblies by solving the equation:

50a+1,500=4,250

Subtracting 1,500:

50a=4,250-1,500=2,750

Dividing by 50;

a = 2,750 / 50=55

Bree spoke at 55 assemblies in this district.

4 0
3 years ago
what is the mean of the numbers 5433221 round to the nearest hundredth if necessary. NEED ANSWER ASAP
AURORKA [14]
I can't tell the numbers apart as there are no colours so I did one answer a with them all being one digit numbers and another answer as them being 2 digit numbers...

1 digit:
5 + 4 + 3 + 3 + 2 + 2 +1 = 20
20 ÷ 7 = 2.86
2 digit:
54 + 33 + 22 + 1 = 110
110 ÷ 5 = 22
6 0
4 years ago
Rewrite as a product of two factors: 3 + 18d + 21y​
Vlada [557]

Answer:

the Expression is :

(3) × (1 + 6d + 7y)

Step-by-step explanation:

here's the solution : -

=》

3 + 18d + 21y

=》

(3 \times 1 )+ (3 \times 6d) + (3 \times 7y)

now, since 3 is common in all terms let's take it out.

=》

3 \times (1 + 6d + 7y)

=》so, ,we got the above expression as product of 3 and ( 1 + 6d + 7y ) as factors.

3 0
3 years ago
Read 2 more answers
Kate has 21 coins (nickels and dimes) in her purse. How many nickels and dimes does she have if she has $1.50? 3 nickels and 18
Brut [27]
It would be 12 nickels and 9 dimes

4 0
3 years ago
Read 2 more answers
(2p + 4) + 5 (p-1) - (p+7)
jonny [76]

<em>Your answer will be, </em><em>"6p - 8"</em>

Thanks,

<em>Deku ❤</em>

6 0
3 years ago
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