IM NOT SMART SUBSTITUTION METHOD AGAIN

IM NOT SMART SUBSTITUTION METHOD AGAIN

Answers

Answer 1

Answer:

x = 6

y = -3

Step-by-step explanation:

15x + 31y = -3

we are given that x =( - y + 3 )

so in the equation 15x + 31y = -3 we substitute "x" for ( -y + 3 ) and we solve for y

so 15 ( -y + 3 ) + 31y = -3

now we use basic algebra to solve for y

step 1 distribute the 15

15 * -y = -15y

15 * 3 = 45

now we have 45 - 15y + 31y = -3

step 2 combine like terms

-15 + 31y = 16y

now we have 45 + 16y = -3

step 3 subtract 45 from each side  

-3 - 45 = -48

45 - 45 cancels out

now we have 16y = -48

step 4 divide each side by 16

16y/16=y

-48/16=-3

we're left with y = -3

Now to find x we substitute -3 for y in x  = -y + 3

* substitute *

x = - ( -3) + 3

the two negative signs cancel out and we get x = 3 + 3

3 + 3 = 6

we're left with x = 6  


Related Questions

For males in a certain town, the systolic blood pressure is normally distributed with a mean of 120 and a standard deviation of 10. Using the empirical rule, determine the interval of systolic blood pressures that represent the middle 99.7% of males.

Answers

Answer:

[tex]G=93\ to\ 147[/tex]

Step-by-step explanation:

From the question we are told that

Mean [tex]x= 120[/tex]  

Standard deviation [tex]\sigma= 9[/tex]

Percentage for men =99.75%

Generally the empirical rule 68%,95% and 99.7% of data value lay b/w 1,2,3 standard deviation of mean  

Standard deviation n= 9

Mean x= 120

Generally the interval  of systolic blood pressure for middle 99.7 of male G is mathematically given as

[tex]G=Mean \pm 3* \sigma[/tex]

[tex]G=120 \pm 3*9[/tex]

[tex]G=93\ to\ 147[/tex]

PLZ help I am so confused

Answers

Whenever it says divide just flip the fraction and change it to multiply

which of these numbers are the largest 4.12 or 4.21​

Answers

Answer: largest is 4.21.

PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPP

Answers

Answer:

L=74

W=77

Step-by-step explanation:

Answer:

L=74 and W=77

Step-by-step explanation:

first the area of a rectangle is length of breath

A=L X W

4514= L X 61

61L=4514

L=4514/61

L=74m

b. perimeter =2(L + W)

338=2*92+ 2W

338=184+2W

2W=338-184

2W=154

W=154/2

W=74

Help me out with this math please

Answers

Answer:

I believe it is C.

Answer:

B

Step-by-step explanation:

because I put it on the calculator and got 0.0195, and they give us 1.95, we have to move the decimal two times in front, that is -2. So the answer is B.  

Oumou is buying tile for her kitchen. The area of Oumou’s rectangular kitchen, in square feet, can be found by using the expression 5(3m+4n). Use the distributive property to write an equivalent expression for the area of Oumou’s kitchen.

Answers

The answer is: 15m + 20n

Hope this helped

In a bag in a sports store room, there are
four times as many AFL balls as Rugby
balls and half as many AFL balls as
soccer balls. The number of balls
altogether is 52.
How many AFL balls are in the store room?

Please stop putting links and stuff as the answer.

Answers

30 is the answer hope rthis helps

Help will give crown do NOT get this

Answers

2x+7/9=5/6 I think it the answer

Answer:

[tex]14x + 36 = 15[/tex]

Step-by-step explanation:

Multiply both sides by LCM which is 18.

[tex]18( \frac{7}{9} )x + 2 )= \frac{5}{6} \times 18[/tex]

[tex]14x + 36 = 15[/tex]

The base of a rectangular prism is completely filled by 24 unit cubes. Each cube has a length of one unit, a width of one unit, and a height of one unit. If the height of the prism is completely filled by 4 layers of unit cubes, what is the volume of the prism?

Answers

Answer:

26

Step-by-step explanation:

Answer:

96

Step-by-step explanation:

multiply this please! i dont understand this assignment and need someones help asap!

Answers

Answer:

b1 = -21

b2 = 33

b3 = 6

Step-by-step explanation:

I think that it is asking you to multiply 3 by -7, 11 and 2 and those would equal b1,2, and 3

PLZ HELP WILL GIVE BRAINLY IF CORRECT

Answers

Answer:

1000 MM is the greatest

Step-by-step explanation:

1000 MM to CM = 100

9.7 CM and 4.7 CM are too small, therefore, we ignore them..

450 MM to CM is 45, therefore 1000 MM is the greater length

Answer:

A

Step-by-step explanation:

1,000mm=100cm

3x = 6

Help me p l e a s e

Answers

Answer:

x=2

Step-by-step explanation:

have a nice day

find x please help me thank you

Answers

x should equal 6 because it’s half of the base.
x=6 cm
hope this helps

How do you do this I'm so stuck.

Answers

Answer:

multiple answers below

Step-by-step explanation:

a = 8.6

b = 4.5

c = 9.71

formula for area :: a = b*h / 2

8.6 * 4.5 = 38.7 / 2 = 19.35

perimeter = a+b+c= 8.6 + 4.5 + 9.71 = 22.81

type = right angle ??

What is the median of 5, 9, 5, 6, 3, 2,

Answers

arrange the numbers from least to greatest
2,3,5,5,6,9
the median is 5

Q4) Identify which of the following are geometric sequences and which are
not
(i) 2, 6, 18, 54.....
(ii) 25,5, 1,
(iii) 1, 4, 9, 16

Answers

Answer:

(i) and (ii)

Step-by-step explanation:

For a sequence to be geometric then the ratio r between consecutive terms must be common.

(1)

2, 6, 18, 54

6 ÷ 2 = 3

18 ÷ 6 = 3

54 ÷ 18 = 3

Here there is a common ratio r = 3 , then sequence is geometric

(ii)

25, 5, 1

[tex]\frac{5}{25}[/tex] = [tex]\frac{1}{5}[/tex] and [tex]\frac{a_{3} }{a_{2} }[/tex] = [tex]\frac{1}{5}[/tex]

There is a common ratio r = [tex]\frac{1}{5}[/tex] , then sequence is geometric

(iii)

1, 4, 9, 16

4 ÷ 1 = 4

9 ÷ 4 = 2.25

16 ÷ 9 = 1.777..

There is no common ratio, then sequence is not geometric

GUYS PLEASE ASAP I WILL FAIL IF U GUYS DONT ANSWER PLEASE

Answers

Answer: a square is both rectangle and quadrilateral.a trapezoid, rhombus and parallelogram is a quadrilateral. A parallelogram is also a rectangl.

Step-by-step explanation:

10 points

15. What is the rule for an arithmetic sequence whose first term is 12 and the common
difference is 9?

Answers

Answer:

T1=12 a=12 a=T1

d=9

your Arithmetic equation is Tn=a+(n-1)d

Tn=a+(n-1)d

SUBSTITUTE a and d in your equation

Tn=12+(n-1)(9)

Tn=12+9n-9

Tn=3+9n or Tn=9n+3

can someone help i dont know any of these formulas

Answers

s.a=C.A xH

v of n.o.2 =lxwxh

Step-by-step explanation:

v of no.3=πr2h and s.a=πdh

no.1=area of cross section x area of all faces and v=area of cross section x length

try those ones

What is the axis of symmtry

Answers

Answer:

The axis of symmetry of a parabola is a line about which the parabola is symmetrical.

Step-by-step explanation:

The axis of symmetry of a parabola is a line about which the parabola is symmetrical. When the parabola is vertical, the line of symmetry is vertical. When a quadratic function is graphed in the coordinate plane, the resulting parabola and corresponding axis of symmetry are vertical.

The middle of a parabola

Type the correct answer in each box. Use numerals instead of words.
Bethany collected 200 survey responses regarding recycling behaviors in her city of those responses, 174 people responded that they
participate in the city's recycling program.
Use this information to complete the statement. Round all answers to the nearest hundredth.
, which means that
% of the people surveyed do not participate in the city's
The approximate sample proportion is
recycling program.

Answers

Answer:

Step-by-step explanation:

Answer:

1st one 0.87

2nd one 13

PLATO

Step-by-step explanation:

Gross profit of Inner Spark's company amounted to Php275,000. Net Sales is Php400,000 compute for cost of goods sold?

Answers

Answer:Cost of goods sold =Php125,000

Step-by-step explanation:

Profit = Cost Price-Selling Price

Also we know that

Gross Profit = Net Sales– Cost of Goods Sold

Php275,000=Php400,000– Cost of Goods Sold

Cost of Goods Sold=Php400,000-Php275,000=Php125,000

A cone has a volume of 200.96 cubic centimeters and a height of 12 centimeters. What is its radius? Use ​ ≈ 3.14 and round your answer to the nearest hundredth. r ≈ centimeters

Answers

Answer:

Radius = 4 cm

Step-by-step explanation:

Formula:

r = √[ (3 * v) / (π * h) ]

Ana has a hypothesis that girls get up earlier and, as a result, usually enter Ana's Donut Shop before boys do. To
test her hypothesis, she spends 10 mornings asking the first 3 people to enter her shop whether they are a boy
or a girl.
The data she collects is given in the table below. "G" represents a girl, and "B" represents a boy.
Drag the bars to make a relative frequency plot that shows the proportion for each possible number of girls in
the first 3 customers in a day.

Answers

Answer:

0 = 0.2  1 = 0.3, 2 = 0.4, 3 = 0.1

Step-by-step explanation:

Khan Academy told me

HELP NEEDED 20 POINTS AND BRAINLIST!!!! Please explain your answer and no links! please!

Answers

Answer:

From (0,0) and go down 1 and put a dot then down 4 and over to the right 1 and draw a line.

Step-by-step explanation:

Hope this helps have a nice day!

The cost for a ticket at the movie theater is $13. Students get a 9% discount taken off the price of a ticket. How much does the student ticket cost after the discount is taken off?


Explain and make sure it’s right for BRAINLIST.

Answers

so 9% of 13 is 1.17
so then you go $13 - $1.17 and your answer is $11.83

Parallelogram L M N O is shown. Angle N is (5 x) degrees and angle L is (3 x + 40) degrees. In parallelogram LMNO, what is the measure of angle M? 20° 60° 80° 100°

Answers

Answer:

80degrees

Step-by-step explanation:

Find the diagram attached

From the diagram, the opposite angle of the parallelogram are equal hence;

5x= 3x+40

5x - 3x = 40

2x = 40

x = 40/2

x = 20degrees

Also <M + <N = 180

<M + 5x = 180

<M + 5(20) = 180

<M + 100 = 180

<M = 180-100

<M = 80degrees

Hence the measure of angle M is 80degrees

Answer:

80

Step-by-step explanation:

did the test

what is the slope of the line?

Answers

Answer:  -2/3

i hope this helps!

Answer:

[tex]\sf -\cfrac{2}{3}[/tex]

Step-by-step explanation:

To measure slope, we pick any two points on the line. Then we look at the horizontal and vertical distances between those points.

Going from the point on the left to the point on the right, the change in y is -2 and and the change in x is 3.

[tex]\sf Slope=\cfrac{rise}{run} =\cfrac{-2}{3}[/tex]

[tex]\sf = -\cfrac{2}{3}[/tex]

The slope of the line is -2/3

___________________

Hope this helps!

Have a great day!

Chad wants to plant daisies in his new planter. How much potting soil should he buy to fill the
planter?
Assume that t = 3.14.

Answers

Answer:the answer is 2.713inches3

Step-by-step explanation:

How I know I just did This problem and get it correct

PLSS HELP WITH THSI IMMEDIATELY!!!! i’ll give brainiest if u don’t leave a link.

Answers

Answer:

Step-by-step explanation:

All the three sides are equal. So, it is equilateral triangle.

All the angles are less than 90°, so, it is acute triangle

Answer:

it's acute and equilateral

Step-by-step explanation:

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