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krok68 [10]
3 years ago
12

What are the solutions to 2x^2+7y=4 ? Select all that apply.

Mathematics
1 answer:
liberstina [14]3 years ago
7 0

Answer:

x = -1/2 , 4

Step-by-step explanation:

1) If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.

2x+1=0

x−4=0

2) Set the first factor equal to 0.

2x+1=0

3) Subtract 1 from both sides of the equation.

2x=−1

4) Divide each term by 2 and simplify.

2x/2= −1/2

5) Cancel the common factor of 2.

x= −1/2

6) Move the negative in front of the fraction.

x = −1/2

7) Set the next factor equal to 0 and solve.

x=4

8) The final solution is all the values that make

(2x+1)(x−4) = 0 true.

9) x = −1/2 , 4

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If a man were to sell his T.V set for 7200, he would have lost 25%. For what price must he sell it to​
vlabodo [156]

Answer:

Step-by-step explanation

S.P of a t.v = rs 7200

Loss % = 25%

Therefore, C.P = S.P (100/100-loss)

=7200(100/100-25)

=7200 x 100/75

=9600

So,now C.P = 9600

Profit% = 25%

Therefore, S.P = C.P (100+profit/100)

=9600(100+25/100)

=9600 x 125/100

=12000

So,the price he should sell to gain 25%

=12000

Hope it helps...!!!

3 0
3 years ago
One number is 10 more than the other. Their product is 299. Which of the following are the representations?
Talja [164]

Answer:

A.

Step-by-step explanation:

the second number is just 10 more than the first

6 0
2 years ago
Read 2 more answers
What is the value of a in this diagram
Delicious77 [7]
What diagram people?
8 0
3 years ago
Can someone please tell me how to do this?
ziro4ka [17]

The vertical angles are congruent (or equal) so,

32 = 2x

2x = 32

2x/2 = 32/2 ..... dividing both sides by 2

x = 16 which is the answer

3 0
3 years ago
Read 2 more answers
Juan invest $3700 in a simple interest account at a rate of 4% for 15 years
OleMash [197]

<em><u>Question:</u></em>

Juan Invest $3700 In A Simple Interest Account At A Rate Of 4% For 15 Years. How Much Money Will Be In The Account After 15 Years?

<em><u>Answer:</u></em>

There will be $ 5920 in account after 15 years

<em><u>Solution:</u></em>

<em><u>The simple interest is given by formula:</u></em>

S.I = \frac{p \times n \times r }{100}

Where,

p is the principal

n is number of years

r is rate of interest

From given,

p = 3700

r = 4 %

t = 15 years

Therefore,

S.I = \frac{3700 \times 4 \times 15 }{100}\\\\S.I = 37 \times 4 \times 15\\\\S.I = 2220

<em><u>How Much Money Will Be In The Account After 15 Years?</u></em>

Total money = principal + simple interest

Total money = 3700 + 2220

Total money = 5920

Thus there will be $ 5920 in account after 15 years

8 0
3 years ago
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