x=15-y
y=13-z
z=12-x

Answers

Answer 1

Answer:

x = 7; y = 8; z = 5

Step-by-step explanation:

x = 15 - y

y = 13 - z

z = 12 - x

The first equation is solved for x. Substitute x in the third equation with 15 - y from the first equation.

z = 12 - (15 - y)

z = 12 - 15 + y

z = y - 3       (Equation 1)

Now substitute y - 3 for z in the original second equation.

y = 13 - z

y = 13 - (y - 3)

y = 13 - y + 3

2y = 16

y = 8

Substitute 8 for y in Equation 1.

z = y - 3

z = 8 - 3

z = 5

Substitute 5 for z in the original third equation.

5 = 12 - x

-7 = -x

x = 7

Solution: x = 7; y = 8; z = 5


Related Questions

Help please!

Thanks.

Answers

Answer:

6a is the answer I believe.

If i'm wrong correct me in comments.

A Cylinder with
a volume of 27π
in 3 and a height
of 3 in. What is
the radius?

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the concept of Surface Areas and Volume.

==> Volume of Cylinder = πr^2h

==> 27π = πr^2(3)

==> 27 = r^2 (3)

==> r^2 = 9

==> r = 3 inch

hence the radius is 3 inches.

Brainliest!! The following two-way table describes student's
after school activities. Find the probability that a
randomly selected student is in sports.

Answers

Answer with explaination:

Total number of sports students = 65

Total number of music/drama students = 25

Total number of work students = 10

Total number of students = 65 + 25+ 10 = 100

Probability = Total number of favourable outcomes/Total number of outcomes

Probability of picking a sports student = 65/100 = 13/20

Therefore, probability of picking a sports student is 13/20

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help

Answers

Answer:

38°

Step-by-step explanation:

The measure of angle NPM is 38°.

To find :Measure of ∠NPM

Solution :

➠ ∠MPJ + ∠LPM = 180°

➠ ∠MPJ + 90° = 180°

➠ ∠MPJ = 180° – 90°

➠ ∠MPJ = 90°

∠NPM = ∠MPJ – ∠JPN

➠ ∠NPM = 90° – 52°

➠ ∠NPM = 38°

∴ Required answer :

∠NPM = 38°


137°
X-25
Find the value of X

Answers

-3 . 638$ 637$3 shekel

Which points reflected of each other across both exes PLEASE HELP ASAP

Answers

Answer:

I am pretty sure it is (-2,8) and (2,-8)

Step-by-step explanation:

I think my answer is correct because it goes from Quadrant 1 into 4. Other answers are just I quadrant away.

Identify the time being asked.
Given
12-hour
24-hour
1.) Half past midnight
2.) 2 hours to 9:00 p.m.
3.) 5 to 23:00 H
4.) Quarter after 00:00 H
5.) 3 hours and 2 minutes before 8:40 a.m.​

Answers

Answer:

honestly,I also really didn't know the ans so I took it from internet. hope you won't mind

Answer:

1.) 12:30am

2.) 7:00pm

3.) 22:55 or 10:55pm

4.) 12:15am

5.) 5:38am

Step-by-step explanation:

Not me having to turn the clock on my phone to military time to make sure my answers were right XD

How to make a data set with only 5 numbers. And so the mean is 7, the median is 7, and the mode is 5?

Answers

Answer:

5,5,7,8,10

Step-by-step explanation:

mode=5    so that would appear the most so start with 5,5

median=7  that would be the middle number so 7 would be next

when you add 5+5+7=17  now just choose any number to add to 17 and I choose 10 which makes 17+10=27.  

mean=7  so that means the total has to be divided by how many numbers you have, which is 5.  So the total divided by 5 should equal 7.  Since have 27, the number divided by 5 to get 7 is 35.  So, add to 27 to get 35 which would be 8.

27+8=35  that is your total.  Now divide by 5 to get the mean of 7.

Solve for x.
..................................

Answers

Answer: For 7x-11 is There are no like terms.

I don’t know if you want me to solve because I did “Answer: There are no like terms.” or how you want it because the picture you show it confusing

For 4x-2 is Factor 4x−2

4x−2

=2(2x−1)

Answer:2(2x−1)

Step-by-step explanation: Hope this help :D

Which expression is equivalent to 14 x minus 21 over 7 ?

Answers

Answer:

-42

Step-by-step explanation:

Which expression is equivalent to 14 x minus 21 over 7 ?

Mathematically this expression is written as:

= (14 × -21)÷ 7

= (14 × -21)/7

= - 294/7

= -42

Therefore, the equivalent of the above expression is calculated as -42

Quadrilateral JKLM has side lengths of JK = 2y + 3, KL = 8x – 10, LM = 5y – 6, and JM = 3x + 20. Find the values of x and y that make quadrilateral JKLM a parallelogram. A. X = 6, y = 6 B. X = 6, y = 3 C. X = 13, y = 3 D. X = 2, y = 1

Answers

Answer:

(6, 3)

Step-by-step explanation:

Note that the opposite side of parallelogram are congruent, hence;

Jk = LM

2y + 3 = 5y - 6

2y - 5y  =-6 - 3

-3y = -9

y = 9/3

y = 3

Similarly;

KL = JM

8x – 10 = 3x+20

8x - 3x =  20 + 10

5x = 30

x = 30/5

x = 6

Hence (x,y) is (6, 3)

Answer:

B.

Step-by-step explanation:

Help me solve all my math problems and I will mark you ask a brainly thing

Answers

Triangle formula to find surface area base x height divided by 2. Rectangles. Base x heights.

The two triangles equal
16x15 then divide the answer by 2. Then times the one triangle by two. P.S. This is instructions for one triangle. Times the surface area of one triangle by two.

The bottom rectangle

16 x 10. That’s it

The two side rectangles

17 x 10. They times the answer you get for 17 x 10 by two.

Add all the surface areas together, and their is your answer.

What is the volume of a cone with a diameter of 12 inches and a height of 4
inches? *

Answers

Answer:

48 cubic inches

Step-by-step explanation:

Answer:

192π

and or [tex]603in^{3}[/tex]

Step-by-step explanation:

Which of the following expressions is equivalent to -6?
A: -9 + 15
B: 9 - (-15)
C:-9 - 15
D: 9 + (-15)

Answers

Answer: D This is because when you add 9 to -15, -15 is bigger so it turns negative and then it equals up to -6.

Amy bakes x cakes.
Barry bakes four times as many cakes as Amy.
Ceri bakes 12 more cakes than Amy.

They bake a total of T cakes.

Find a formula, in terms of x, for the total number of cakes.
Give your formula in its simplest form​

Answers

Answer:

6x+12=T

Step-by-step explanation:

Amy bakes x cakes.

Barry bakes 4x.

Ceri bakes x+12

So the total is 6x+12=T

Sally plays a game for 1 and 5-sixths hours. Judy plays a game 1-half hour longer than Sally. Question How many hours does Judy play her game? Move numbers to the boxes to show the answer. If there is no whole number, put a 0 in the first box.

Answers

Answer:

2 1/3 hours or 2 hrs, 20 min

Step-by-step explanation:

1 5/6 + 1/2

make mixed number into improper fraction and change 1/2 to 3/6

11/6 + 3/6 = 25/6

14/6 equals 2 2/6 which simplifies to be 2 1/3 or 2 hrs, 20 min

20 points.

Round off x to the nearest tenth.

Answers

Answer:

[tex]x=15.3[/tex]

Step-by-step explanation:

In right triangles only:

The sine of an angle is equal to its opposite side divided by the hypotenuse. (o/h)

The cosine of an angle is equal to its adjacent side divided by the hypotenuse. (a/h)

The tangent of an angle is equal to its opposite side divided by its adjacent side. (o/a)

Therefore, we have the following equation:

[tex]\sin 58^{\circ}=\frac{x}{18},\\x=18\sin 58^{\circ}\approx \boxed{15.3}[/tex]

Alternative:

[tex]\cos 32^{\circ}=\frac{x}{18},\\x=18\cos32^{\circ}\approx \boxed{15.3}[/tex]

I5.3

Hope this helps

The length of a rectangle is shown below: If the area of the rectangle to be drawn is 12 square units, where should points C and D be located, if they lie vertically below the line that connects B and A, to make this rectangle? (5 points) Question 8 options: 1) C(−2, −1), D(1, −1) 2) C(−2, −4), D(1, −4) 3) C(−2, −2), D(1, −2) 4) C(−2, −5), D(1, −5)

Answers

I’m not sure what it is

Solve the inequality and describe the solution set.
y–6≥12

Answers

Answer:

y ≥ 18

All numbers greater than or equal to 18

Step-by-step explanation:

y  – 6≥ 12

Add 6 to both sides

y ≥ 18

All numbers greater than or equal to 18


Find sin(B) in the triangle.

a- 4/3
b- 3/5
c- 4/5
D- 3/4

Answers

Answer.......................

3. 19a - 7 - 3a + 12a

Answers

Answer:

19a + 12a - 3a - 7

31a - 3a - 7

28a - 7

7 (4a - 1)

You combine the terms. And the answer is 28a-7


Need ALL of the RIGHT answers for this math quiz pls. ASAP

Answers

Answer:

1.54cm    2. 112m   3.  576cm    4. 52ft

Step-by-step explanation:

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

i would help but i can’t see it

Which measure of variation is found by placing the data in ascending order and subtracting the lowest value from the highest value?

Answers

Answer:

Range

Step-by-step explanation:

The range of a given set of data is the difference between the largest value and the smallest value in the data. For convenience and ease in the calculation, it is advisable to place the data in ascending order.

For example, given the following set of data:

4,9,5,6,2

To find the range;

=> First arrange the data in ascending order

2,4,5,6,9

=> Find the smallest and largest numbers and then find their difference.

Since the data has been arranged, it is obvious to see that the smallest number is 2 and the largest number is 9.

Therefore the;

range = 9 -2 = 7

Mariah borrowed $1200 to buy a new computer system. She paid the simple interest loan off in 24 monthly payments of $56 each. What was the interest rate of this loan? a.2%
b.6%
c.4.4%
d.7%

Answers

Answer:

B. 6%

Step-by-step explanation:

Answer:

6%

Step-by-step explanation:

Her 24 monthly payments total 24 x $56 = $1344

That means that $1344 - $1200 = $144 is just interest.  What percent is this of her loan amount?  Divide to find out:

144 / 2400 = 0.06 = 6%

trigonometry help! Please show work.

Answers

Answer:

1.

d - adjacent

e - hypotenuse

f - opposite

2.

[tex]\sin \theta = \frac{12}{13},\\\\\cos \theta = \frac{5}{13},\\\\\tan \theta = \frac{12}{5},[/tex]

Step-by-step explanation:

1. The opposite side of an angle is the side that the angle faces or forms. The hypotenuse of a right triangle is always the longest side of the right triangle. The adjacent side is one side or leg next to the angle that is not the hypotenuse.

2. In right triangles only:

The sine of an angle is equal to its opposite side divided by the hypotenuse. (o/h)

The cosine of an angle is equal to its adjacent side divided by the hypotenuse. (a/h)

The tangent of an angle is equal to its opposite side divided by its adjacent side. (o/a)

Thus, we have:

[tex]\sin \theta = \frac{12}{13},\\\\\cos \theta = \frac{5}{13},\\\\\tan \theta = \frac{12}{5},[/tex]

Help me no wrong answer and answer ASAP please help me!!!!

Answers

The first option. (Dilated by a scale factor of 2 and translated 3 units to the right)

Answer:

You probably already answered, but the first option would be correct <3

If you want an explanation tell me!

5x +4 = -6 ???? confused a lil

Answers

Answer:

5x+4=-6

5x=-6-4

5x=-10

x=-10/5

x=-2

Step-by-step explanation:

Answer:

[tex] \sf \: x = - 2[/tex]

Step-by-step explanation:

Now we have to,

→ Find the required value of x.

The equation is,

→ 5x + 4 = -6

Then the value of x will be,

→ 5x + 4 = -6

→ 5x + 4 - 4 = -6 - 4

→ 5x + 0 = -10

→ 5x = -10

→ 5x ÷ 5 = -10 ÷ 5

→ [ x = -2 ]

Hence, the value of x is -2.

An isosceles triangle has base length 18 cm and height 4cm what is the approximate length of the two other sides

Answers

Answer:

The approximate length of the two other sides is 10cm

Step-by-step explanation:

Given

[tex]Base\ Length = 18[/tex]

[tex]Height = 4[/tex]

Required

The length of the two other sides

Divide the triangle to 2 (See attachment)

Considering one of the triangles, we have:

[tex]l^2 = 4^2 + 9^2[/tex]

[tex]l^2 = 16 + 81[/tex]

[tex]l^2 = 97[/tex]

Take square roots

[tex]l = \sqrt{97[/tex]

[tex]l = 9.8488[/tex]

[tex]l = 10[/tex] --- approximated

What is the volume of the Cube?

132 cubic inches
726 cubic inches
1331 cubic inches
33 cubic inches

Answers

Answer:

1331 cubic inches

Step-by-step explanation:

volume = 11×11×11 = 1,331 in³

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