O SYSTEMS OF EQUATIONS AND MATRICES
Solving a word problem using a 3x3 system of linear equations....
Over the last 3 evenings, Latoya received a total of 96 phone calls at the call center. The second evening, she received 2 times as many calls as the third
evening. The third evening, she received 8 fewer calls than the first evening. How many phone calls did she receive each evening?

Answers

Answer 1

Answer:

Find the midpoint of the line segment joining the points ​R(​,​) and ​S(​,​).

Step-by-step explanation:


Related Questions

I need help please ​

Answers

Range is y so we set -5x = whatever number you pick from the range values listed, so

-5x = -5  making x=1

-5x = 0 making x=0

-5x = 10 making x=-2

-5x = 15  making x=-3

The domain is {1,0,-2,-3}

Could someone give me an answer to this please ! :)

Answers

Answer:

8units

Step-by-step explanation:

Given parameters:

  Area of triangle  = 32units²

   Base  = 8units

   

Unknown:

height x of the triangle = ?

Solution:

The area of a triangle is given as;

    Area = [tex]\frac{1}{2}[/tex] x base x height

 Input the parameters and solve for the height;

     32  = [tex]\frac{1}{2}[/tex] x 8 x h

     32 = 4h

      h = 8

height of the triangle is 8units

2. Choose all numbers that are RATIONAL. *
1. 0
2. 5/7
3. 3.6820350285........
4. -10​

Answers

Answer:

0, 5/7, and -10 are RATIONAL numbers ⇒ 1, 2, 4

Step-by-step explanation:

Rational number are the numbers can be written in the form of the fraction [tex]\frac{a}{b}[/tex] , b ≠ 0

Example:

5, -3, 5.2 , -10.567, [tex]2\frac{1}{3}[/tex] , [tex]\sqrt{64}[/tex] , [tex]-\sqrt{\frac{25}{4}}[/tex] , [tex]\frac{\sqrt[3]{8}}{5}[/tex] , .......5 can be written as [tex]\frac{5}{1}[/tex]-3 can be written as [tex]-\frac{3}{1}[/tex]5.2 can be written as [tex]\frac{52}{10}[/tex]-10.567 can be written as [tex]-\frac{10567}{1000}[/tex][tex]2\frac{1}{3}[/tex]  can be written as [tex]\frac{7}{3}[/tex][tex]\sqrt{64}[/tex] can be written as [tex]\frac{8}{1}[/tex][tex]-\sqrt{\frac{25}{4}}[/tex] can be written as [tex]-\frac{5}{2}[/tex] [tex]\frac{\sqrt[3]{8}}{5}[/tex] can be written as [tex]\frac{2}{5}[/tex]

All the numbers above are rational numbers

Let us find the rational numbers in our question

∵ 0 can be written as [tex]\frac{0}{1}[/tex]

0 is a rational number

∵ [tex]\frac{5}{7}[/tex] is a fraction

[tex]\frac{5}{7}[/tex] is a rational number

∵ 3.6820350285........ can not be written in the form of the fraction

   because we do not know its end (it is an approximated number)

∴ 3.6820350285........ is not a rational number

∵ -10 can be written as [tex]-\frac{10}{1}[/tex]

-10 is a rational number

0, 5/7, and -10 are RATIONAL numbers

Question 3 of 12

A jeweler needs exactly 19,000 beads to make jewelry.

He buys 48 boxes of beads. Each box has 400 beads.

He completes the calculations below and concludes that he has bought enough boxes of beads to make all of the jewelry.


48

×

400

=

(

40

×

400

)

+

(

8

×

400

)

=

16

,

000

+

3

,

200

=

19

,

200

Which explains what the jeweler does to support his conclusion

Answers

Answer:

See explanation

Step-by-step explanation:

Given

[tex]Needed = 19000[/tex]

Required

Support the jeweler's conclusion

From the question, we have that:

[tex]Boxes = 48[/tex]

[tex]Bead = 400[/tex] per box

So, he bought a total of:

[tex]Total = 48 * 400[/tex]

[tex]Total = 19200[/tex]

Since, he needed exactly 19000 and he has 192000, we can conclude that he has enough beads

2. Evaluate the expression:
(5w^2+
+2) = (3p) for W= 4 and p = 3

Answers

At age 77, Eastman suffered from chronic pain due to a spinal condition. On March 14, 1932, after a reportedly jovial meeting with friends, he excused himself to write a brief letter before he 4535

can someone tell me what my GPA is.

Answers

Answer:

probably 5.00

Step-by-step explanation:

maybe a 4.0 or higher cuz those r really good grades

1 Later that afternoon, Robert spent more time playing the video game.
He earned 88 points. How many points did he tell his friend that
he earned?

Answers

This doesn’t seem like the full question...
Do you have a picture so I can answer it lol

in need help quick and can you also explain how you did or what I'm supposed to be doing

Answers

-45x+72
you multiply the 9 by everything in the parentheses

Answer:

heres a helpful stragity for your pos and neg numbers

-   -

 +   it's aupposed to be like a smiley face so lets say you had to solve -7+3 then you'd cover up the negitive and positive sign, so the answer would be a negitive number. It's a little stategy. And you should answer the question in the brackets then that answer times whatever you got.  

two angles are complementary.the measure of the larger angle is two times the measure of the smaller angle .What is the measure of each angle ?

Answers

We know that :

The sum of two angles that are complementary = 90°

Smaller angle = x

Larger angle = 2x

We can make the formula as

= 2x + x = 90°

= 3x = 90°

= x = 90 ÷ 3

= x = 30

The smaller angle = x = 30°

The larger angle = 2x = 30 × 2 = 60°

Therefore , the measure of each of the angles are 30° and 60° .

Please Help Me With This Math ;(

Answers

On the interval (8,24), the rate of change is 10.625 bacteria per minute.

9: 5.96 dollars per year on the interval (0,9)
10: 6.43 dollars per year on the interval (6,12)

A vaccine is 95 percent effective. What is the probability that it is not effective for more than 1 out of 20 individuals?

Answers

Answer:

The probability that the vaccine is not effective in more than 1 of the 20 individuals is equal to:

P = 1 - P(1) - P(0)

Where:

P(1) = probability that the vaccine is not effective in one individual

P(0) = probability that the vaccine is not effective in 0 individuals.

The probability that the vaccine is effective is 0.95

Then the probability that the vaccine is not effective is 0.05.

Then to calculate P(1), suppose that the vaccine is not effective in the first case and then is effective 19 times, this is:

p(1) = (0.05^1)*(0.95^19)

But this only for one case, we have 20 possible permutations (the vaccine is not effective in the first case, the second case, third case, etc)

Then the actual probability is:

P(1) = 20*((0.05^1)*(0.95^19)) = 0.377

And P(0) is easy to compute:

P(0) = (0.05^0)*(0.95^20) = 0.358

And here we have only one possible permutation, so we do not worry about that.

Then P = 1 - P(1) - P(0) = 1 - 0.377 - 0.358 = 0.265

This means that the probability that the vaccine is not effective in more than one individual is of 0.265 (or 26.5% in percentage form)

hi Google what is 3.6 * 10 ​

Answers

Answer:

3.6 x 10 is 36

3.6 x 100 is 360 l

3.6 x 1000 is 3600

1. 3.6
2. 36
3. 360
4. 3600

x=4/9,y=1/2, and z=3/5 6wy-3z

Answers

Answer: The answer would be - 7/5 or (-0.46)

Plug in the numbers that each letter equals. So you get 6(4/9)(1/2) - 3(3/5). Then you just simplify.

Is ABC= A DEF? If so, name the congruence postulate that applies. ​

Answers

Answer:

Congruent ASA

Step-by-step explanation:

We are given 2 angles and 1 side length. In order, first there is the angle, then side length, then another angle. The ASA postulate says that the triangle will be congruent.

I need to solve for n.​

Answers

it’s going to be 286.

In a population of 271 Dd parrots, predators kill 55. What is the approximate fitness of the genotype?

Fitness of Dd: 20%
Fitness of Dd: 40%
Fitness of Dd: 60%
Fitness of Dd: 80%

Answers

Answer:

60%

Step-by-step explanation:

They killed quite a bit and a lot were left.

Help!!! Write the equation of the parabola in vertex from

Answers

Answer:

[tex]y=-\,(x+1)^2+3[/tex]

Step-by-step explanation:

Notice that the vertex of the parabola is at (-1, 3), so we can start the expression of the quadratic in vertex form as:

[tex]y=a\,(x--1)^2+3\\y = a\,(x+1)^2+3[/tex]

we can now find the coefficient "a" by using another point the parabola goes through, like for example (0,2):

[tex]y = a\,(x+1)^2+3\\2=a\,(0+1)^2+3\\2=a+3\\a=2-3\\a=-1[/tex]

So the final expression for the parabola in vertex form is:

[tex]y=-\,(x+1)^2+3[/tex]

Find the slope of the line y=-3x+3

Answers

Answer:

Step-by-step explanation:

M = -3

y= mx +b

m stands for slope and -3 is in that position so -3 is your slope

Answer:

⇝ Slope = -3

Step-by-step explanation:

The question is asking us to find the slope of the line y = -3x + 3.

Note that the equation is written in slope-intercept form:

y = mx + b

Where:

m = slope (coefficient of x)b = y-intercept (constant)

For this problem the coefficient of x is -3, and the constant is 3.

Therefore, the slope is -3.

The density of oxygen is 1.429*10^-3 grams per cubic centimeter. How is this number written in standard form

Answers

Answer:

The density of oxygen in standard form is 0.001429 grams per cubic centimeter.

pair of angles is an example of supplementary angles will mark brainest​

Answers

Answer:

Angle 1 and Angle 7

Step-by-step explanation:

Angle 1 and angle 7 are supplementary angles. Angle 3 and angle 7 are corresponding angles and angle 1 + angle 3 = 180

Answer:

Angle 1 and angle 7

Step-by-step explanation:

supplementary angles adds up to 180

angle 1 and angle 7 is an example of supplementary angles.

other options do not apply.

Write the slope-intercept form of the equation for
each graph described.
Line passing through (-2,-8) and (9,-8)

Answers

Answer:

y=-8

Step-by-step explanation:

First find the slope which is rise over run which equals (y2-y1)/(x2-x1)

(-8-(-8))/(9-(-2))

(-8+8)/(9+2)

0/11

slope = 0

Now you have the slope of 0. You can plug in one of the given point (x,y) to find b

-8=0(9)+b

-8=b

Combine everything

y=0x-8

y=-8

g Statesville population in 2010 was about 24,700, and was growing by about 1% each year. If this continues, what will Statesville population be in 2018? [Round to the nearest person.]

Answers

Answer:

26,676population

Step-by-step explanation:

Population in 2010 = 24,700

If it grows yearly by 1%, increment per year is expressed as:

1% of 24,700

= 1/100×24700

= 247 populations

After 8years, population increase will be 247×8 = 1976 population

Statesville population in 2018 will be expressed as;

Population in 2010+increase after 8years

= 24700+1976

= 26,676 population

Hence statesville population in 2018 will be 26,676population

Divison i need help with that

Answers

Answer:

K What's the problem?

Step-by-step explanation:

Labor costs. Labor costs for a farmer are $55 per acre for corn and $45 per acre for soybeans. How many acres of each crop should the farmer plant if he wants to spend no more than $6,900 on labor?

Answers

Answer:

392984

Step-by-step explanation:

2-1= plz help me i need help

Answers

Answer:

1 :)

Step-by-step explanation:

f(n)= 4n+4
g(n)= n + 1
Find (f + g)(n)

Answers

(F+g)(n) = f(n)+g(n) = 4n+4+n+1 = 5(n+1)

Brandon enters bike race. He bikes 9 1/2 miles every 1/2 hour

Answers

Since there is no table given I will assume that what you want me to do is to show that Unit rate of Brandon’s biking. SO here are the data that we need: => 8 and ½ miles = 8.5 miles => ½ hour = .5 hours or 30 minutes Now, let’s solve for the unit rate => SO in every 30 minutes he bikes around 8.5 miles => Since 1 hour is equals to 30 minutes, simply multiply 8.5 by 2 => 8.5 * 2 = 17miles => 17 miles / hour
Hope this helps:)

2 divided by 7/6 in simplest form

Answers

exact form: 12/7

decimal form: 1.714285

mixed number form: 1 5/7

Mark randomly chose a snack, replaced it, and then chose another snack. What is the probability that Mark chose a bag of chocolate and then chose a bag of dried fruit?

Answers

Answer:

50%

its very likely tbh. I did that like in 5th grade, im probably wrong.

Please help It’s already due

Answers

Answer:

90

Step-by-step explanation:

the total interior angles of a triangle measure to 180 degrees.

55 + 35 = 90

180-90=90

Other Questions
Solve the system of equations below. 3/+4,/9-12 = 17 2v1 +3,11+52 = 18 -V5-VT-12 = -6 Which sentence uses a subordinating conjunction correctly? Group of answer choices When a demand for a product rises producers want to make more of the product. Because the meat packing industry was growing, the demand for cattle went up. If the demand is high the price may also increase. Cattle were worth $4 each in Texas, but they were worth $12 each in Chicago. Solve for r given the points ( 12 , 10 ) and (-2, r) and the slope, m = -4. Help me please I really need help Uma caixa contm 40 bolinhas de jogo de tnis, sendo 10 verde, 14 azuis e 16 vermelhas. Retirando uma bola ao acaso da caixa, qual a probabilidade desta bola ser vermelha? Assinale a alternativa correta, que representa a probabilidade desta situao. qual dessas quatro e a resposta .14 / 4015 / 4016 / 4017 / 40 ASAP PLEASEHow are photosynthesis and cellular respiration related?Group of answer choicesThe products of photosynthesis are the reactants of cellular respiration.The reactants of photosynthesis are the reactants of cellular respiration.The reactants of photosynthesis are the reactants of cellular respiration.The products of photosynthesis are the products of cellular respiration. pls explain too on how u got it :) This text consists of an introduction followed by ten sections. What does each of the ten sections describe? the growth of the fur trade in the 17th century the federal Indian Removal Act a dialect descended from the Eskimo-Aleut language family a Native American culture area 10The Constitution of 1824 created the state of Coahuila and Texas. This merger of the two geographic regionseventually resulted in -Fan end to Immigration to the regionGpolitical tensions that divided the regionHthe spread of slavery further into MexicoJincreased conflicts with American Indian tribesWhat changed the way people lived ? a sequence is Defined by the formula F(n+1)=f(n)-3. If f(4)=22, what is f(1)a)10b)13c)31d)34 A jet accelerates from rest down a runway at 1.75 m/s2 for a distance of 1500 m beforetakeoff.a. How fast is the plane moving at takeoff?b. How long does it take the plane to travel down the runway? If 6 candy bars cost a total of $12, then $2 is the ___________ of the candy bars. * Why were epics so important to historians? Ca.Which of the following was a domestic challenge faced by Sam Houston?a new court systemb. lack of public landc. Native American raids of Texas settlementsd. potential invasion by Mexico SomeOne help me with this 1) x+30 = 402) 30-20+2x=103) 3x-10+13=-2x+284) 13x-23-45=-7x+125) 2(x+4) = 10x+246) 3(x-5) = 1-(2x-4)7) 5X -10 = 1528) X + 4 = X + 63 2 Which best describes the pharaoh's connection to the ancient Egyptian economy? (1point)O The pharaoh concerned himself with religious matters and let government advisers manage theeconomy.O The pharaoh taxed all goods made in Egypt and controlled what was made or purchased.The pharaoh took a hands-off approach to business in Egypt and let the citizens control themoney.The pharaoh invented coin money and controlled the supply and flow of the money from hisresidence. Triangle XYZ is rotated to create the image triangle X'Y'Z'.On a coordinate plane, 2 triangles are shown. The first triangle has points X (negative 2, 2), Y (1, 2), Z (0, 4). The second triangle has points X prime (2, negative 2), Y prime (negative 1, negative 1), Z prime (0, negative 4).Which rules could describe the rotation? Select two options.R0, 90R0, 180R0, 270(x, y) (y, x)(x, y) (x, y) What value is equivalent to (3^6)^3? How many kids would you like to have in the future?