2 years ago

X^2 + 10x +7= 0 How do I solve this pls explain it step by step.

Mathematics

1 answer:

bija089 [108]2 years ago

6 0

Answer:

x=-5+3√2 or x=-5-3√2

Step-by-step explanation:

use the quadratic formula

where as a=1 b=10 c=7

and solve it

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Bad White [126]

Answer:

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Step-by-step explanation:

8 0

2 years ago

the age of Jane is 80% of the age of Alice. If we add both ages the result is 45. Find the age of Jane and Alice

inysia [295]

Answer:

Age of Alice=25 years

Age of Jane=20 years

Step-by-step explanation:

We are given that the age of Jane is 80 % of the age Alice.

We have to find the age of Jane and Alice.

Let x be the age of Alice

According to question

Age of Jane=80% of Alice=80% of x= $\frac{80}{100}\times x=\frac{4x}{5}$

$x+\frac{4x}{5}=45$

$\frac{5x+4x}{5}=45$

$\frac{9x}{5}=45$

$x=\frac{45\times 5}{9}=25$

Age of Alice=25 years

Age of Jane= $\frac{4}{5}\times 25=20 years$

Age of Jane=20 years

5 0

3 years ago

If fg + gh = fh,which of the following statements must be true?

Oksanka [162]

The only safe conclusion is that point G lies on line FH or that point G lies somewhere between line FH. We cannot conclude that point G is the midpoint of line FH eventhough by virtue of definition of midpoint, the given equation is a proof equation. If G were to be midpoint, segment FG must be equal to segment GH in line FH.

5 0

3 years ago

How do i solve this.

jasenka [17]

Answer:

here is the answer to your question

5 0

1 year ago

Solve for x.<br> 6x - 3x = 12

expeople1 [14]

Answer:

x=4

Step-by-step explanation:

3x = 12

divide by 3

x =12/3

8 0

3 years ago