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Law Incorporation [45]
3 years ago
7

Can someone help me out?

Mathematics
1 answer:
Alexeev081 [22]3 years ago
7 0

Answer: factorise the equation 49x^2+70x+25

Step-by-step explanation:

49x^2+70x+25

(7x)^2+2*7x*5+(5)^2

(7x+5)(7x+5)

therefore the sides of the square are (7x+5)(7x+5)

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The original price and percent paid of a 20% discount and a $14.40 sale price.
Vikentia [17]
Your answer is $18.00

Because 14.40 x 100/80 =$18

Hope this helps

Please please please like my comment
3 0
3 years ago
From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?
Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}

P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}

P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}

The expected number of men in the delegation is

E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)

E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}

E(x)=\dfrac{6}{7}

E(x)\approx 0.86

Therefore, the expected number of men in the delegation is 0.86.

4 0
3 years ago
If you place $1,000.00 in a savings account with an interest rate of 5.25%/month, how much should you earn in interest at the en
Ilia_Sergeevich [38]
5.25% turns into 0.0525.  <span>Then, you multiply 0.0525 and 1,000 together. This equals 52.50. </span><span>So, you would earn $52.50 at the end of the month in interest.</span>
5 0
3 years ago
Read 2 more answers
BRAINLIEST + POINTS NEED HELP PLEASE!
CaHeK987 [17]

Answer:

B. $5.58

Step-by-step explanation:

In order to find the amount of income earned, we can set up an equation using a variable for the number of checks and the minimum balance:

Income earned = (.008)b - $0.10c - $2.00, where b = the minimum balance and c = the number of checks.

Since the customer writes 21 checks, c = 21 and maintains a minimum balance of $1,210, b = 1210, we can fill in the variables and solve the equation:

Income earned = (.008)(1210) - (0.10)(21) - 2 or 9.69 - 2.10 - 2  = $5.58

4 0
3 years ago
I need help finding answer if you help me i will give your answer a 5 starr
faust18 [17]

Answer:It is the second option

Step-by-step explanation:

5 0
2 years ago
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