How do I solve 2(a+2)=2?

Answers

Answer 1

Answer: 2(a+2)=2
a+2=2:2
a+2=1
a=1-2
a=-1

Answer 2

Answer: A+2=1
A=-1
This is the answer

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I need to find the zeros of the function:

f(x)=2x^2-5x-3

Answers

$2x^2-5x-3=0\n 2x^2-2x-3x-3=0\n 2x(x+1)-3(x+1)=0\n (2x-3)(x+1)=0\n x=(3)/(2) \vee x=-1$

I need help on this question please help?

Answers

a) $(7)/(20)$
b) $(2+7)/(20)=(9)/(20)$
c) $0$

Hello !

a) $7/20$

b) $2/20 + 7/20 \n=(2+7)/20 \n =9/20$

c) $The answer is 0.$

The ages of two sisters are 11 years and 14 years.In how many years time will the product of their age be 304?

Answers

x - the number of years in which the product of their ages will be 304
In x years one sister will be 11+x years old, and the other sister will be 14+x years old.

$(11+x)(14+x)=304 \n154+11x+14x+x^2=304 \nx^2+25x+154=304 \nx^2+25x-150=0 \nx^2-5x+30x-150=0 \nx(x-5)+30(x-5)=0 \n(x+30)(x-5)=0 \nx+30=0 \ \lor \ x-5=0 \nx=-30 \ \lor \ x=5$

The number of years must be a positive number, so x=5.

The product of their ages will be 304 in 5 years.

At Bayside High School, 55% of the student body are boys. Thirty-five percent of the boys are on honor roll, and 40% of girls are on honor roll. What percent of the student body is on honor roll? Round to the nearest percent

Answers

If 55% of the student body are boys, then 45% are girls.

35% of boys are on the honor roll, so 35% of 55% are on the honor roll.

40% of girls are on the honor roll, so 40% of 45% are on the honor roll.

So now we need to find each of those numbers...

35% of 55% =
.35 * .55 = .1925 multiply by 100 to convert to percent

19.25% of boys (in the student body) are on honor roll

40% of 45% =
.40 * .45 = .18 multiply by 100 to convert to percentage

18% of girls (in the student body) are on honor roll

Add the two together to get the total percentage of student body that is on the honor roll...

19.25% + 18% = 37.25%

Round to the nearest percent

37%

So,

35% of 55% is equal to the percent of boys on honor roll in the student body.

100 - 55 = 45%, which is the percent of girls in the student body.

40% of 45% is equal to the percent of girls on honor roll in the student body.

35% * 55% = 19.25%

40% * 45% = 18%

Adding them up, we get:
19.25 + 18 = 37.25%

Round it to the nearest percent.
37.25 --> 37%

Rounded to the nearest percent, 37% of the student body is on honor roll.

Factor the perfect square trinomial 4x^2– 20x + 25.

Answers

Answer:

$(2x-5)^(2)$

Step-by-step explanation:

Which digit is in the tenths place of 1,860.5

Answers

5

In the number 1,860.5, the digit in the tenths place is "5." The tenths place is the first digit to the right of the decimal point, and in this case, it holds the value of 5 tenths or 0.5.

Answer:its the 6

Step-by-step explanation:trust

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