All categories

3 years ago

Determine if the ordered pair is a solution of the equation. Is the point (2,1) is a solution of the equation: y = 2x - 3?

Mathematics

1 answer:

vladimir2022 [97]3 years ago

7 0

I think it is false but I am not for sure

You might be interested in

I REALLY NEED HELP! PLEASE HELP ME!!

kirill [66]

Answer:

5:3

Step-by-step explanation:

a burger cost 10 and a hot dog cost 6 so the ratio is literally 10:6 if u want a simplified answer divide both numbers by 2

5:3

8 0

3 years ago

Read 2 more answers

Samples of emissions from three suppliers are classified for conformance to air-quality specifications. The results from 100 sam

tigry1 [53]

Answer:

$P(A) = \frac{30}{100}$

$P(B) = \frac{77}{100}$

$P(A\ n\ B) = \frac{22}{100}$

$P(A\ u\ B) = \frac{85}{100}$

Step-by-step explanation:

Given

See attachment for proper format of table

$n = 100$ --- Sample

A = Supplier 1

B = Conforms to specification

Solving (a): P(A)

Here, we only consider data in sample 1 row.

In this row:

$Yes = 22$ and $No = 8$

So, we have:

$n(A) = Yes + No$

$n(A) = 22 + 8$

$n(A) = 30$

P(A) is then calculated as:

$P(A) = \frac{n(A)}{Sample}$

$P(A) = \frac{30}{100}$

Solving (b): P(B)

Here, we only consider data in the Yes column.

In this column:

$(1) = 22$ $(2) = 25$ and $(3) = 30$

So, we have:

$n(B) = (1) + (2) + (3)$

$n(B) = 22 + 25 + 30$

$n(B) = 77$

P(B) is then calculated as:

$P(B) = \frac{n(B)}{Sample}$

$P(B) = \frac{77}{100}$

Solving (c): P(A n B)

Here, we only consider the similar cell in the yes column and sample 1 row.

This cell is: [Supplier 1][Yes]

And it is represented with; n(A n B)

So, we have:

$n(A\ n\ B) = 22$

The probability is then calculated as:

$P(A\ n\ B) = \frac{n(A\ n\ B)}{Sample}$

$P(A\ n\ B) = \frac{22}{100}$

Solving (d): P(A u B)

This is calculated as:

$P(A\ u\ B) = P(A) + P(B) - P(A\ n\ B)$

This gives:

$P(A\ u\ B) = \frac{30}{100} + \frac{77}{100} - \frac{22}{100}$

Take LCM

$P(A\ u\ B) = \frac{30+77-22}{100}$

$P(A\ u\ B) = \frac{85}{100}$

8 0

3 years ago

37.5% written as a decimal and as a fraction in simplest form

Angelina_Jolie [31]

$p\%=\dfrac{p}{100}\\\\37.5\%=\dfrac{37.5}{100}=\dfrac{37.5\cdot10}{100\cdot10}=\dfrac{375}{1000}\\\\\dfrac{375}{1000}=\dfrac{375:125}{1000:125}=\dfrac{3}{8}\\\\\dfrac{375}{1000}=0.375\\\\Answer:\ \boxed{37.5\%=\dfrac{3}{8}=0.375}$

7 0

3 years ago

Read 2 more answers

Zach is 15 in a half years old. this is 3 years younger than his brother hunter. how old is hunter?

dlinn [17]

Answer:

18 1/2 years old

Step-by-step explanation:

x-3= 15 1/2

x= 15 1/2 + 3

x= 18 1/2

Hunter is 18 1/2 years old.

4 0

3 years ago

How do I solve 5x=-4y+4;x=1,2,3

lesya692 [45]

X=1
5=-4y+4
4y=-1
y=-1/4

x=2
10=-4y+4
4y=-6
y=-3/2

x=3
15=-4y+4
4y=-11
y=-11/4

7 0

3 years ago

Read 2 more answers