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3 years ago

Pls help!!!

Mathematics

1 answer:

Effectus [21]3 years ago

3 0

A is the correct choice

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What is 80 divided by 6400

Snezhnost [94]

80 divided by 6400 is 0.0125, but the question in the picture shows 6400 divided by 80, which is 80.

6 0

3 years ago

The variables x and y have a quadratic relationship. Tripling the value of x causes the value of y to increase by a factor of ni

Lady bird [3.3K]

Answer:

<em>The value of y when x has a value of 9 is 18</em>

Step-by-step explanation:

<u>Functions</u>

The variables x and y are said to have a quadratic relationship. That information is not enough to set up a general equation for both variables.

Furthermore, we know that tripling the value of x causes the value of y to be multiplied by 9. That leads us to establish a proportional equation between them, as follows:

$y=kx^2$

Where k is an unknown constant.

Let's use the given point (3,2) to find the value of k:

$2=k(3)^2$

$2=9k$

Solving for k:

$\displaystyle k=\frac{2}{9}$

The equation is now:

$\displaystyle y=\frac{2}{9}x^2$

Now find y when x=9:

$\displaystyle y=\frac{2}{9}(9)^2$

$\displaystyle y=\frac{2}{9}\cdot 81=18$

The value of y when x has a value of 9 is 18

3 0

3 years ago

Express 750 grams as a percentage of 3 kilograms

butalik [34]

Hope it helps !!!!!!!

4 0

3 years ago

Which of the following is an extraneous solution of √4x+41 = x+5?

dolphi86 [110]

Answer:

x=-8

Step-by-step explanation:

on squaring both sides

either x-2=0 or x+8=0

either x=2 or x=-8

Putting x=2 in original equation, we get

7=7 hence, it is not an extraneous solution

Putting x=-8 in original equation

i.e. 3=-3

Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)

7 0

2 years ago

Geometry plss help me with this!!

kodGreya [7K]

Answer:

5 pound of grass seed

Step-by-step explanation:

total area=750 ft2

area X + Y=125 ft2

750 - 125= 625 ft2 (shaded area)

625/125=5

6 0

3 years ago