Mathematics High School

Can someone pls help need it ASAP and can you pls explain in full detail how to do it
:)
Will give brainlist for the first person to explain and do it

Can Someone Pls Help Need It ASAP And Can You Pls Explain In Full Detail How To Do It:) Will Give Brainlist

Answers

Answer 1

Answer:

x= 1 , y=4

Step-by-step explanation:

x-y= -3 => Equation 1

x+5y= 21 => Equation 2

Substitution Method:

Substitute Equation 1=>

x=y-3 <= Equation 3

Put x=y-3 in Equation 2:

x+5y=21

( y-3)+5y=21

y-3+5y=21

6y-3=21

6y=21+3

6y=24

y=24÷6

y=4

Put y=4 in Equation 1:

x-y= -3

x-4=-3

x=4-3

x=1

Hope this helps :)

Answer 2

Answer:

x = 1

y = 4

Step-by-step explanation:

x - y = -3   then x = y - 3

x + 5y = 21

substitute for x:

y - 3 + 5y = 21

reduce:

6y = 24

y = 4

x = 4 - 3 = 1

check:

1 - 4 = -3

-3 = -3

and

1 + 5(4) = 21

21 = 21

Related Questions

Milan raises dairy cow he has 165cows.Each cow produced2 gallons of milk every day.How many gallons did the cows produce per day,show solution using grid method

Answers

Answer:

Cows produce milk per day = 330 gallons

Step-by-step explanation:

Given - Milan raises dairy cow he has 165 cows. Each cow produced

             2 gallons of milk every day.

To find - How many gallons did the cows produce per day ?

              Show solution using grid method.

Proof -

Given that,

Total cows Milan raises = 165

Now,

Given,

1 cow produce milk = 2 gallon

⇒ 165 cows produce milk = 165 × 2 gallons

Now,

By using grid method , we have

165 × 2

X                       100                        60                         5

2                        200                       120                        10

⇒ 165 × 2 = 200 + 120 + 10 = 330 gallons

∴ we get

Cows produce milk per day = 330 gallons

Write the slope-intercept form of the linear equation of a line with slope of -3/4 and a y intercept of (3,0)

Answers

Answer:

y= -3/4 +3

Step-by-step explanation:

slope-intercept form formula is y=mx+b

 mx= slope

 b= y-intercept

Therefore, if you input the numbers into the equation it is

y=-3/4 +3

it is 3 because this point is located at 3 on the y-axis

Find the percent change. 150 pounds to 135 pounds.

Answers

Answer:

-10%

Step-by-step explanation:

precent change = 135 - 150

(divide both sides by 150)

precent change = -0.1

(multiply both sides by 100 so change to precent)

precent change = -10%

Answer:

10%

Step-by-step explanation:

1) d=rt
d = distance traveled by a moving object
r = rate of speed
time the object travels
t = time the object travels

Your first stop is in Bend, which is 122 miles away. How
fast do you need to travel in order to make it there in 3
hours?

Answers

Answer:

41 mph

Step-by-step explanation:

122 = 3r

r = 40 2/3 mph

Quotient of a number and 3 increased by -7 Equals negative 144​

Answers

Answer:

x = -411

Step-by-step explanation:

Number = x

Quotient of  a number and 3 : [tex]\frac{x}{3}[/tex]

(x/3) increased by (-7) : [tex]\frac{x}{3}+ (-7)[/tex]

[tex]\frac{x}{3} -7 = - 144\\\\\frac{x}{3}= -144 + 7\\\\\frac{x}{3}= -137\\\\x = -137*3[/tex]

x = - 411

Answer:

-411

Step-by-step explanation:

x / 3 + -7 = -144

x / 3 = -144 + 7

x = -137 x 3

x = -411

Hope that helps!


​Which city had the highest temperature?


​

​Which city had the lowest temperature?


​

​Which city had a temperature greater than Oakland?


​

​What was the difference in temperature between Detroit and Oakland?

degrees Celsius.

Answers

1.Scottsdale
2.st Louis
3. Scottsdale
4. -41
1. Scottsdale
2. Detroit
3.Scottsdale
4.23

Maggie uses 6.9 pints of white paint and blue paint to paint her bedroom walls. 3 5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?

Answers

Answer:

2.76 pints

Step-by-step explanation:

Given that:

Tottal amount of paint used = 6.9 pints

The faction of white paint used = 3/5

Hence, Amount of white Paint used :

3/5 * 6.9 = (3 * 6.9) / 5 = 4.14 pints of white paint.

Pints of blue paints used :

Total pints - pints of white used

6.9 - 4.14 = 2.76 pints of blue paint

Catherine put $5500 into a savings account that earns 4% compound
interest monthly. After six months, how much money will she have total?

Answers

6,820$ because you just find 4% of 5,500, then multiple that amount by the amount of months , and just add your initial amount plus that amount and there is your answer

what kind of angel is it?​

Answers

Answer:

90°> =Acute

90°< =Obtuse

(90°= )= Right

3. Is this data linear or nonlinear? Explain how you know.*

Answers

Answer:

Non-linear

Step-by-step explanation:

Not consistently increasing

$400 interest is earned on a principal of $2,000 at a simple interest rate of 5% interest per year. For how many years was the principal invested?

Answers

Answer:

4 years

Step-by-step explanation:

Given data

Simple interest= $400

Principal= $2000

Rate= 5%

The simple interest formula is given as

SI=PRT/100

substitute and solve for T

400=2000*5*T/100

cross multiply

400*100= 10000*T

40000=10000T

T= 40000/10000

T= 4 years

Hence the time taken is 4 years

Help me pls djejefjcskaeddn

Answers

Answer:

Step-by-step explanation:

1  Yes they are right angles, it is a right angle because you solve it with a Sine equation

2 the hypotenuse is the longest side

3.  If the squares of the two shorter sides add up to the square of the hypotenuse, the triangle contains a right angle.

What is the angle measure of each angle (2x) degrees and x degrees

Answers

Answer:

x = 30

2x = 60

Step-by-step explanation:

2x + x = 90

3x = 90

x = 30

2(30) = 60

Mr. Locke was paid $190 for a job that required 40 hours of work. At this rate, how much would he get paid for a job that requires 60 hours of work?​

Answers

285 dollars for 60 hours of work

A savings account increases from ​$300 to ​$309. What is the percent increase of the savings​ account?

Answers

Answer:

9 percent

Step-by-step explanation:

Answer:

3%

Step-by-step explanation:

1st Method: Increase Formula = (Last value-first value)/(first value)

Increase = (309-300)/300 = 9/300 = 3/100

= 0.03 or 3%

2nd Method: 309/300 = 103/100 = 1.03 (increase over 1 is 0.03 = 3%

HELP ASAP.!!!!!!! Jahlil is saving money at a constant rate to buy a new TV. After saving for $3$ months, Jahlil has $\$330$ . After saving for $5$ months, Jahlil has $\$510$ . Construct a function that models the relationship between the amount of money Jahlil has saved and the number of months he has saved for. Show or explain how you constructed the function. Respond in the space provided.

Answers

Answer:

y=90x+60

Step-by-step explanation:

x=months

y=dollars

Find dollars/month by finding the slope.

(3, 330), (5, 510)

-> (510-330)/(5-3) -> 90

Since its a constant rate, the function will be in the form, y=mx+b, and since we found the slope we can plug m=90.

y=90x+b

To find be, we simply substitute one of the points.

330=90(3)+b

b=60

Thus, plugging it in,

y=90x+60

A rational function g is given below. Find all values of a for which ​g(a)=16. g(x)=(4)/(x+1)+(20)/(x^(2)+2x+1)

Answers

Answer:

a = 2/3

Step-by-step explanation:

(4(x+1) + 20 )/(x+1) = 16

4x + 4 + 20 = 16x + 16

12x = 8

x = 2/3

Jameson pays $39.90 for 3.8 pounds of almonds. What is the price per pound of almonds?

Answers

Step-by-step explanation: The price of3.8 pounds of almonds=$39.90 thus we can write Hence the price of almonds is $10.50 per pounds.

AWNSERS:$10.50

Answer:

Step-by-step explanation: 39.90 x 3.8 = 151.62

Please help!!!!!!!!!!! Will give brainlist

Answers

Answer:

0.2

Step-by-step explanation:

When you have a decimal problem you add a 0 before the number. But if its a fraction ike 4 5/8 the decimal would be 4.58.

What is the simplified version of
6(m - 2m) - (4m - 5m) ?

Answers

Answer:

-5m

Step-by-step explanation:

6m-12m-4m+5m

-6m+1m

=-5m

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4
what is the new perimeter?
120
1920
480

Answers

The original perimeter of a rectangle is 30cm,if we enlarged it by scale factor of 4

What is the new perimeter ?
The new perimeter is 120

The length of one side of APTV is given. Use the relationship between the sides of a 30°-60°-90° triangle to find the lengths of the other two sides.​

Answers

Answer:

your answers will be 3 and 6

Step-by-step explanation:

have a nice day !!^_^

Which expression is equivalent to 46 - 2x)?

A) 24-8x

B) 24-6x

C) 10-8x

D) 10-6x

Answers

Answer:

24-8x

Step-by-step explanation:

Answer:jghgghfgfhgfhghfj

Step-by-step explanation:

ANSWER THIS ASAP I ONLY HAVE 12 MINUTES!!! What inequality is represented by this graph?​

Answers

Answer: B, is the answer

Step-by-step explanation:

The way that the line goes from 6 is represented by the equation

Answer:

x less than 6

Step-by-step explanation:

the line is going down from six and six isnt filled in so it couldnt be equal to 6

i need help please i really don’t get it

Answers

Answer: no se ve bien

Step-by-step explanation:

mucha ilumnacion

jennifer is a wedding planner. She set up five chairs at each table for the reception. If( t )represents the number of tables, which of the following expressions represents the total number of chairs that she set up?

A. 5 + t

B. t + 5

C. 5t

D. t - 5

Answers

c. 5t is the correct answer

Answer:

C. : 5t

--

Once we find out the number of tables at the reception, we can then multiply the number of tables to 5t.

a ratio of 10 to 2 is the same as A 8/2 B 8/10 C 12/8 D 5/1​

Answers

Answer:

D. 5/1

Step-by-step explanation:

10/2 = 5

5/1 = 5

I hope this helps :)

It’s due tonight help please

Answers

Answer:

:)

Step-by-step explanation:

A) 4,4

B) 2,2

C) 4,3

Hope this helps

what is x and y. help plz!!!!!!!​

Answers

Answer:

x = 11

y = 1

Step-by-step explanation:

N : M

8 : 1

8 N = 1 M

since there is 1 M per every 8 N, y would be 1

to find x, just take 88 and divide it by 8 to get 11

If f(x)=2x−3 and g(x)=4x+5, what is (f⋅g)(x)?
A)(f⋅g)(x)=8x−15
B)(f⋅g)(x)=6x+2
C)(f⋅g)(x)=8x2+22x−15
D)(f⋅g)(x)=8x2−2x−15

Answers

9514 1404 393

Answer:

  D)  (f⋅g)(x)=8x2−2x−15

Step-by-step explanation:

  (f·g)(x) = f(x)·g(x) = (2x -3)(4x +5) = 2x(4x +5) -3(4x +5)

  = 8x² +10x -12x -15

  (f·g)(x) = 8x² -2x -15

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