2 years ago

Can someone help with 3?

Mathematics

1 answer:

kupik [55]2 years ago

6 0

Answer:

120-30 is accurate because if you divide 120 by 100 you get 1.2 when multiplied by 25 equals 30

Step-by-step explanation:

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Use the quadratic formula to solve x2 – 5x + 3 = 0.

Anit [1.1K]

Answer:

x is 4.30 and 0.697

Step-by-step explanation:

Quadratic formular:

$x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a} \\$

a » 1

b » -5

c » 3

$x = \frac{ - ( - 5)± \sqrt{ {( - 5)}^{2} - (4 \times 1 \times 3)} }{(2 \times 1)} \\ \\ x = \frac{5± \sqrt{13} }{2}$

Therefore, values of x :

$x = \frac{5 + \sqrt{13} }{2} \: \: and \: \: \frac{5 - \sqrt{13} }{2} \\ \\ x = 4.30 \: \: and \: \: 0.697$

7 0

3 years ago

The time t that it takes for a group of volunteers to construct a house varies inversely as the number of volunteers v. If 20 vo

PolarNik [594]

$20 \div 15 = 1 \dfrac{1}{3}$
$62.5 \times 1 \dfrac{1}{3} \\ = 83.3$

Answer is 83.3 hours.

Hope this helps. - M

3 0

3 years ago

Read 2 more answers

Heres a free question for a couple of points.

saul85 [17]

Thank you for this!!

8 0

4 years ago

Read 2 more answers

haley has $20 in a savings account that earns 10% annually. the interest is not compounded. how much will she have in 2 years

kumpel [21]

Answer:

240

Step-by-step explanation:

1 percent=10 dollars

10 percent=100 dollars

=120 dollars in one year

times 2 [2x]=

240

Check:

10 times 10=100 dollars

100+20=120

x2=

120+120 <em>or</em> 120 times 2=

240

5 0

3 years ago

Gorilla

harina [27]

The answer is true hopefully this helped

8 0

4 years ago