All categories

3 years ago

- Write the expression you can substitute

Mathematics

2 answers:

irinina [24]3 years ago

7 0

Answer:

y= 13/22

Step-by-step explanation:

x=4-6y

equation: 4x + 2y=3

4(4-6y) +2y = 3

use distributive property

16 - 24y + 2y = 3

Combine and collect like terms:

16 -22y = 3

-22y = 3 - 16

-22y = -13

y= -13/-22

y= 13/22

Hope this helps :)

AveGali [126]3 years ago

4 0

Answer:

4(4-6y) + 2y = 3

Step-by-step explanation: Just substitute x into 4-6y multiplied by 4 since x is by itself in the second equation.

You might be interested in

Find the distance between the points (4, 3) and (0, 3).

Salsk061 [2.6K]

The correct answer is B.) 4

7 0

3 years ago

20 POINTS How do you find the interquartile range

kari74 [83]

Answer:

To find the interquartile range (IQR), first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.

Step-by-step explanation:

(Khan Academy)

3 0

2 years ago

Read 2 more answers

A parabolic arch has a height of 25 feet and a span of 40 feet. How high is the arch 8 feet from each side of the center?

Llana [10]

Answer:

The correct option is;

21 ft

Step-by-step explanation:

The equation of the parabolic arc is as follows;

y = a(x - h)² + k

Where the height is 25 ft and the span is 40 ft, the coordinates of the vertex (h, k) is then (20, 25)

We therefore have;

y = a(x - 20)² + 25

Whereby the parabola starts from the origin (0, 0), we have;

0 = a(0 - 20)² + 25

0 = 20²a + 25 → 0 = 400·a + 25

∴a = -25/400 = -1/16

The equation of the parabola is therefore;

$y = (-\frac{1}{16})(x-20)^2 + 25$

To find the height 8 ft from the center, where the center is at x = 20 we have 8 ft from center = x = 20 - 8 = 12 or x = 20 + 8 = 28

Therefore, plugging the value of x = 12 or 28 in the equation for the parabola gives;

$y = (-\frac{1}{16})(12-20)^2 + 25 = (-\frac{1}{16})(-8)^2 + 25 = 21 \ ft$ .

4 0

3 years ago

The mean of 5 numbers is 12. If four of the numbers are 1, 2, 3, 20, what is the last number?

liubo4ka [24]

So the last number is 34.

Hope this will help u...

7 0

3 years ago

Read 2 more answers

Team A has 12 more points than team b team A has 5 times as much points as team b

tekilochka [14]

Answer:

make no sense

6 0

3 years ago