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sesenic [268]
1 year ago
10

Equations and inequalities please help khan

Mathematics
1 answer:
Nostrana [21]1 year ago
3 0

Answer:

k= 17

Step-by-step explanation:

51÷3 = k

k = 17

this is the answer

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How to solve 2^(4x-1) -4x+1/2+2=0 ?
e-lub [12.9K]
<span>(a) 2X1 + X2 - X3 = 8
-3X1 - X2 + 2X3= -11
-2X1 + X2 + 2X3= -3
(b) 3X1 - X2 + 5X3 =-2
2X1 + 4X2 - X3 =3
-4X1 + X2 + 7X3 =10
(2) Using elementary row operations investigate the consistency of the following systems.
(a) 2X1 + 4X2 - 2X3 = 0
3X1 + 5X2 =1
(b) X1 - X2 + 2X3 =4
X1 + X3 = 6
2X1 - 3X2 + 5X3 =4
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(3) consider the system
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4 0
2 years ago
Farmer Jack has chickens, cows, and horses on his farm. Altogether, there are 24 heads and 74 feet. If Farmer Jack has two more
Serga [27]

Answer:

<em>Mistake in question, if there were 25 heads, then there are</em>

<em>13 chickens, 5 cows, 7 horses</em>

Step-by-step explanation:

<u>System of Equations</u>

Let's call x=number of chickens, y=number of cows, z=number of horses

We know Jack has two more horses than cows, so

z=y+2

We also know there are 24 heads, one per animal, so

x+y+z=24

Combining with the previous condition:

x+y+y+2=24

x+2y=22

We finally know there are 74 feet, two for each chicken and four for each cow or horse:

2x+4y+4z=74

Combining with the first condition

2x+4y+4(y+2)=74

2x+4y+4y+8=74

2x+8y=66

Dividing by 2

x+4y=33

Let's bring the first equation here

x+2y=22

Subtracting both

2y=11

It would give us a decimal number of cows

y=5.5

And a decimal number of horses

z=7.5

And a integer number of chickens

x=22-11=11

If the number of heads would have been 25, our problem will be correctly stated and the answer would be

13 chickens, 5 cows, 7 horses

8 0
2 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
4vir4ik [10]

Answer:

There is no question.

Step-by-step explanation:

3 0
2 years ago
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Helppppppp....!!??!!!
andrew-mc [135]
I think the answer is B because a perpendicular bisector is 90 degrees and an angle bisector divides that angle by 2. 90 divided by 2 is 45, so the answer is B.
7 0
1 year ago
Which inequality is true when the value of g is 20?
Usimov [2.4K]

Answer:

Where are the inequality

Step-by-step explanation:

3 0
1 year ago
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