Mathematics High School

Solve the systems of equation by graphing

Answers

Answer 1

Refer to attachment 1

Refer to attachment 2

Related Questions

Which of the following rational number between 3/7 and 7/8 ?
13/56
19/56
27/56
53/56

Answers

Answer:

Step-by-step explanation:

There are two ways to do this. You could use your calculator to find out the decimal numbers that are equivalent to the two given fractions. Then check which one of the givens falls between these two numbers. I wouldn't do it that way -- not when you are told that the answer has 56 as the denominator. So ...

The best way to do it is to change the two givens so that they have a denominator of 56

3/7 = 3*8/7*8 = 24 / 56

7*7 / 7*8 = 49 / 46

So you need a number that is between 49 and 24

There is only one 27 / 56

You need 520 mL of a 15% alcohol solution. On hand, you have a 65% alcohol mixture. How much of the 65% alcohol mixture and pure water will you need to obtain the desired solution?

You will need _____ mL of pure water and _____ mL of the 65% solution.

Answers

Answer:

400 ml, 120 ml

Step-by-step explanation:

Alcohol content of 15% solution:

0.15*520 = 78 ml

Volume of 65% solution containing 78 ml of alcohol:

78/0.65 = 120 ml

Required water volume to obtain 15% solution:

520 - 120 = 400 ml

3) if the cost of 1 pen is Rs.10, find the cost of 5 pen

Answers

Answer: 5 pens cost Rs.50

Explanation: Since 1 pen costs Rs.10, you will need to multiply the number of pens (1) and the cost of that number of pens (Rs.10) by the amount of pens you must find the cost for (5). Since 10 times 5 is 50, that means that 50 is the cost of 5 pens.

I hope this helps!

Determine if the sequence 0.2 comma 1 comma 5 comma 25 comma... is arithmetic or geometric. Then identify the next term in the sequence.

A
geometric; 125

B
arithmetic; 75

C
arithmetic; 125

D
geometric; 75

Answers

Answer:

The answer would be C.

Step-by-step explanation:

0.2 x 5 = 1

1 x 5 =5

5 x 5 = 25

So your next number in the sequence should be 125.

i need this pleaseeeee!!!!
(a) The population of a certain city decreased by 4000 people. Write a signed number to represent this population change.
and also b!!!!

Answers

Answer:

the answer is 0004..................

The ______ is the number that is being repeated as a factor.

Answers

the answer is a constant

(sinα+cosα)^2−(sinα−cosα)^2

Answers

Answer:

Error

Step-by-step explanation:

The answer is Error u might want to ask ur teacher

f(x)=2x^2-3x+7 evaluate f(-2)

Answers

Answer:

Step-by-step explanation:

Find two linear functions p(x) and q(x) such that (p (f(q(x)))) (x) = x^2 for any x is a member of R?

Let p(x)=kpx+dp and q(x)=kqx+dq than

f(q(x))=−2(kqx+dq)2+3(kqx+dq)−7=−2(kqx)2−4kqx−2d2q+3kqx+3dq−7=−2(kqx)2−kqx−2d2q+3dq−7

p(f(q(x))=−2kp(kqx)2−kpkqx−2kpd2p+3kpdq−7

(p(f(q(x)))(x)=−2kpk2qx3−kpkqx2−x(2kpd2p−3kpdq+7)

So you want:

−2kpk2q=0

and

kpkq=−1

and

2kpd2p−3kpdq+7=0

Now I amfraid this doesn’t work as −2kpk2q=0 that either kp or kq is zero but than their product can’t be anything but 0 not −1 .

Answer: there are no such linear functions.

What is the value of x in the triangle below?
ModuleTwoPostAs...
a
>> Q
3x
T
V
8x - 30
R
15
45
6
18

Answers

Answer:

Step-by-step explanation:

58
4 25
What is the mixed number of decimals

Answers

Answer:

fun fact : by reading what i just right u just lost 5 sec of your life

Step-by-step explanation:

Please help me I really need your help ASAP

Answers

in order to find the answer to your questions you need to find the value

Example:

y+10=18

y=8

Could someone please help answer this thanks so much, please no spam, will give brainliest (homework help) thank you!

Answers

Answer:

x > -7

make sure to put the sign with the line under it because I can't type it

NEED HELP! John wrote the numbers 678,901 and 67,890. How many times greater is the value of 7 in 678,901 than the value of 7 in 67,890?A. 10,000B. 1,000C. 100D. 10

Answers

the answer is D. 10

70,000 / 7,000 = 10

How do I find an overall grade?

My scores are:

27.92 out of 30
19.25 out of 17.5
21.88 out of 17.5
11.55 out of 17.5
13.65 out of 17.5

The two scores I got bonus questions right that's why I scored above.

Can you please explain how to get the answer so I can know how to solve!

I have 6 tests left is it still possible to get an A in this class?

Answers

you would divide them so 27.92/30 is would be a 93 and so on. you would have around an 88 which is a B+ so i’m sure if you do good on the other assignments you’ll get a high A

−5(10) Helpppp please

Answers

Step-by-step explanation:

I will help you if you follow me

Answer:

-50

Step-by-step explanation:

all you do is -5 times 10

how to write a fraction percent as a decimal such as ⅜%:

write each percent as a decimal.

[tex] \frac{3}{8} \% \: as \: a \: decimal[/tex]

Answers

Answer:

as a decimal,, you just devide 3/8 then multiply by 100 it results to

37.5

PLEASE ANSWER SO I DONâ€™T FAIL THIS

Copy Z DEF to the line so that S is the

vertex.

This task will be complete when you have

constructed an angle with vertex S that is

congruent to ZDEF..

Answers

So the 6 plus the other active numbers are going to be multiplied by the nearest ten to get the answer which is 17

Choose the property that justifies the first step of simplifying the expression below.
3(-2x+5)
Property
Step
3.-2x+3.5

Answers

-2.5 is you’re answer use PEMDAS

Peyton has two summer jobs. During the week she works in the grocery store, and on the weekend she works at a nursery. She gets paid $15 per hour to work at the grocery store and $16 per hour to work at the nursery. How many total hours does she work if she does 12 hours at the grocery store and 9 hours at the nursery? How many total hours does she work if she does gg hours at the grocery store and nn hours at the nursery?

Answers

Answer:

Total hours worked = 21

Total earned = 15gg + 16nn

Step-by-step explanation:

We know:

Grocery store: $15/hour

Nursery: $16/hour

Total hours worked = 12 + 9 = 21

Your expression would be:

Total earned = 15gg + 16nn

7) Why must the amount of hot chocolate (50 ml) be the same in both cups for the experiment to work?

Answers

Because the amount of hot chocolate is an independent variable and needs to stay consistent throughout the experiment

Please help with #4!!

Answers

Answer:

I think if you want to enlarge it add 10 to all three sides to get the sides of 13 16 and 16

Which best describes the graph of the function f(x) = 4(1.5)x?

Answers

In the question "Which best describes the graph of the function f(x) = 4(1.5)^x?" The correct answer is "The graph passes through the point (0, 4), and for each increase of 1 in the x-values, the y-values increase by a factor of 1.5." (option B) Because when x = 0, f(0) = 4(1.5)^0 = 4(1) = 4. Thus the graph passes through (0, 4). Also for every increase of 1 in the x-values, the y-values increase by a factor of 1.5 i.e. f(0) = 4(1.5)^0 f(1) = 4(1.5)^1 f(x) = 4(1.5)^2 etc

Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/3695268-which-best-describes-the-graph-of-he-function-f-x-4-15-x.html#answer4949036

Answer:

Step-by-step explanation:

Since this Equation isn't linear because of the squaring, we can eliminate A and C which imply linear functions. Then it's as easy as pluging in zero for the equation and seeing which one works, and you get an answer of B

Can you help me please

Answers

Answer:

a. 8, 14, 20

x=5 when y=11

Step-by-step explanation:

Just subsititute the x in the equation with the number that represents x.

please help me
IF YOU DONT KNOW THE QUESTION, PLEASE DONT ANSWER IT FOR THE PONIS. I REALLY NEED IT

Answers

Answer:

As follows,

Step-by-step explanation:

3x^2y^-1

3x^2/y

∛2x^5y^3

2^(1/3)x^(5/3)y^(3/3)

2^(1/3)x^(5/3)y

5^(4/4)x^(1/4)y^(3/4)

∜5^4xy^3

Mike went to the store to buy shirts. The shirts were $45 each. The store was offering the following discount:
Buy 1 shirt at regular
price and get any 2
shirts of the same
price for 40% off!
Mike decided to buy 3 shirts. Not including sales tax, how much money did Mike save by buying the shirts at the discounted price?
$36
$54
$81
$99

Answers

Answer:

Mike saved 54 dollars

Step-by-step explanation:

because 40% of $45 is $18. so that makes the other 2 shirts 27 dollars a piece. so he saves a lot of money.

Select ALL that could take P to Q:

Answers

Answer:

No question.

Step-by-step explanation:

Write an equation for the line passing through
the points (4,-3) (-2, -6)

Answers

Answer:

y=1/2x-5

Step-by-step explanation:

By solving for slope, we get 1/2

We use the equation b=y-mx to find the y intercept

b= -5

Equation: y= 1/2x - 5

Can you please help me!

Answers

Answer:

< 2 and < 6

< 3 and < 7

>> Corresponding angles are the pairs of angles that are found in the same relative position on different intersections.

Plz help it’s due tonight!!!

Answers

Answer: AB≅EF, ∠B≅∠E, BC≅DE

Step-by-step explanation:

AB and EF are both marked with one line, making them congruent.

The same goes for BC and DE since they are marked with two lines.

Angles B and E are congruent because of the marking that is specified in both figures.

25% of 94?

please explain!

Answers

Answer:

23.5

Step-by-step explanation:

25% of 94

[tex] = 94 \times \frac{25}{100} [/tex]

[tex] = 94 \times \frac{1}{4} [/tex]

= 23.5 (Ans)

Answer:

25% of 94 is 23.5

Step-by-step explanation:

step 1: Convert the problem to an equation using the percentage formula: P% * X = Y.

step 2: take your percent then turn it into a decimal like 10% is 0.10

step 3: then multiply your decimal by your whole number like 0.10 * 65 to get your answer

plz give brain if this helps and is correct thx <(^w^)>

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