3 years ago

What is the approximate solution of this system of equations y=2^x and y=3x

Mathematics

1 answer:

Bond [772]3 years ago

6 0

I graphed it out and it seems that both A and C are correct. I would check them to make sure.

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The equation y=4x+4 estimates the number of U.S. households, in millions, expected to install devices that receive and manage br

Pepsi [2]

Answer:

X ≥9 years after 2009.

Step-by-step explanation:

Y=4x+4

Y-4=4x

X=(Y-4)/4

Y=number of U.S. households, in millions.

Y≥40

Y-4≥36

(Y-4)/4≥9

So, X≥9.

7 0

3 years ago

Z varies directly as x and y, z = 6 when x=2 and y = 6. Find the value of z when x = 3 and y = 8

Monica [59]

Answer:

Step-by-step explanation:

This is a joint variation problem:

z varies directly as x and y

Interpreting this;

z ∝ xy

Therefore;

z = kxy

z = 6, x = 2, y = 6

Now find k,

6 = 2 x 6 x k

6 = 12k

k = $\frac{1}{2}$

To find the value of z;

x = 3, y = 8

z = $\frac{1}{2}$ x 3 x 8 = 12

3 0

3 years ago

Help help help please thanks

-Dominant- [34]

Answer:

1/15 gal / mile if your numbers are correct

Step-by-step explanation:

1/5 / 15/4 = 1/5 * 4 / 15 = 4/60 = 1/15

7 0

2 years ago

Can you help me find the side??? It's trigonometry!!

olganol [36]

Answer: 5.6

===================================

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(B) = AB/BC

cos(62) = AB/12

12*cos(62) = AB

AB = 12*cos(62)

AB = 5.63365875

AB = 5.6

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3 years ago

How do you solve this 8*[[(7+4)*2]-[(11-7)*4]]? I am trying to help my son with his homework and sad to say I am 46 and I can't

elena55 [62]

Answer: 160

Step-by-step explanation:

Don't know how to

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3 years ago