3 years ago

Solve the equation for y. 10x -4y = -20

Mathematics

1 answer:

Vinvika [58]3 years ago

7 0

Answer:

y=5+5/2x

Step-by-step explanation:

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A circus acrobat is shot out of a cannon. The equation for the acrobat's pathway can be modeled by h= -16t^2+25. How long will i

Alex_Xolod [135]

For this we almost have the following equation:
$h = -16t ^ 2 + 25
$
We must match the equation to zero:
$-16t ^ 2 + 25 = 0
$
From here, we clear the value of t.
We have then:
$16t ^ 2 = 25

t ^ 2 = 25/16$
We discard the negative root because we are looking for time:
$t = \sqrt{ \frac{25}{16} } 

$
$t = \frac{5}{4}$
Answer:
it will take him to reach the ground about:
$t = \frac{5}{4}$ seconds

5 0

3 years ago

What's the answer?<br> Idk it bc I'm stupid and I don't feel like doing it

aliya0001 [1]

H=-16x to the second power +136

4 0

3 years ago

The ratio of boys and girls are 2:5. If the total number of students in school are 350, find the number of girls.

yulyashka [42]

Answer:

250 girls

Step-by-step explanation:

Add the ratio together (2+5=7), then do 350÷7=50

50 is one part of the ratio so to find how many girls, you would do 50x5=250

7 0

3 years ago

If the probability of an event is 0.99, which of the following best describes the event?

AleksAgata [21]

Answer: C

Step-by-step explanation:

0.99=99%

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3 years ago

For what values of k does kx^(2)-3x+2=0 have two equal real roots?

yaroslaw [1]

Tienes que usar la fórmula cuadrática:

(-b +/- √(b^2-4ac))/2a

Primero identificas los valores de a,b y c en kx^2-3x+2=0

K=a, b=-3, c=2

Luego sustituis en la fórmula y te queda:

(3+/-√(9-8k))/2k

Para que las raíces Sena reales se tienen que cumplir que 9-8k>=0

5 0

3 years ago

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