Which method may be fastest if both equations are in standard form with the x's and y's lined up?


ANSWER CHOICES:

1) Substitution

2) elimination

3) graphing

Answers

Answer 1
The answer is graphing

Related Questions

Pls help I’m being timed

Answers

I believe it’s B and not c

Find the value of x and the value of y.
A. x = 130, y = 50
B. x = 135, y = 45
C. x = 140, y = 40
D. x = 145, y = 35

Answers

Answer:

        B.  x = 135, y = 45

Step-by-step explanation:

x° + y° = 180°        {suplementary angles}

x° = 3y°               {corresponding angles by parallel lines}

So:

3y° + y° = 180°

4y° = 180°

y° = 45°

y = 45

x° = 3×45° = 135°

x = 135

Olivia has a points card for a movie theater. She receives 80 rewards points just for signing up. She earns 2.5 points for each visit to the movie theater. She needs at least 105 points for a free movie ticket. Write and solve an inequality which can be used to determine xx, the number of visits Olivia can make to earn her first free movie ticket.

Answers

Answer:

10 visits

Step-by-step explanation:

According to the scenario, calculation of the given data are as follows,

Rewards for signing up = 80 points

Reward per visit = 2.5 points

Total points needed = 105

Let, number of visits = x

So, we can calculate number of visits by using following formula,

80 + (2.5 × X) = 105

2.5X = 105 - 80

2.5X = 25

X = 25 ÷ 2.5

X = 10 visits.

Hence, Olivia needs to make 10 visits in order to earn a free movie ticket.

what is the value?? its due in 5 minutes

Answers

Answer:

-52

Step-by-step explanation:

Substitute -4 in for x and use PEMDAS to get the answer.

Answer:

C) 44

Step-by-step explanation:

3(-4)^2 - 7(-4) - 32

= 48 + 28 - 32

= 44

mark me brainliest pls!!!

In ΔKLM, l = 820 cm, m = 560 cm and ∠K=169°. Find the length of k, to the nearest centimeter.

Answers

Answer:

1374

Step-by-step explanation:

delta math

The length of the side k in the given triangle is 1,373.9 cm.

What is cosine law?

The law of Cosines, also known as Cosine Rule or Cosine Formula basically relates the length of the triangle to the cosines of one of its angles.

Given that, in ΔKLM, l = 820 cm, m = 560 cm and ∠K=169°, we need to find the length of side k,

Using the cosine law,

k² = l²+m² - lmCos169°

= 820²+560²-(820)(560)cos169°
= 1,373.9

Hence, the length of the side k in the given triangle is 1,373.9 cm.

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You have 5 choices of shirts: red, blue, green, yellow, brown; 3 choices of pants: green, brown, black; 4 choices of
socks: black, brown, tan, white; and 3 choices of shoes: white, brown, black. What is the probability that you will
dress all in brown-shirt, pants, socks, and shoes?

Answers

Answer:

15% chance

Step-by-step explanation:

The required probability is 0.0166 that you will dress all in a brown shirt, pants, socks, and shoes.

How to find probability?

The probability that you will dress all in brown is the product of the probability of selecting each brown item.

There is only one choice of brown shirt out of a total of 5 shirt choices, so the probability of selecting a brown shirt is 1/5.

Similarly, there is only one choice of brown pants out of a total of 3 pant choices, so the probability of selecting brown pants is 1/3.

There is also only one choice of brown socks out of a total of 4 sock choices, so the probability of selecting brown socks is 1/4.

Finally, there is also only one choice of brown shoes out of a total of 3 shoe choices, so the probability of selecting brown shoes is 1/3.

To find the overall probability of dressing all in brown, you need to multiply these probabilities together: (1/5) × (1/3) × (1/4) × (1/3) = 1/60.

This means the probability of dressing all in brown is approximately 0.0166, or about 1.7%.

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Sue washes 25 cars in 5 hours. This means Sue washes cars per hour

Answers

Answer:

she washes 5 cars per hour

Answer:

Sue washes 5 cars an hour

Step-by-step explanation:

25/5 = 5 cars an hour

PLLLS helpppp mee this is due now T-T

Answers

Answer:

Step-by-step explanation:

Answer:

= 2 and 5

Step-by-step explanation:

( 4 - 7x ) + ( 2x - 2 ) = 0

4 - 7x = 2x - 2 = 0

-7x -2x - 2 + 4 = 0

  -5x   - 2   = 0

-5 x = 0                  or             -2 = 0

x = 5                                       x = 2

A pair of shoes usually sells for $60. If the shoes are 20% off, and sales tax is 7%, what is the total price of the shoes, including tax?

Answers

Answer:

$50.88

Step-by-step explanation:

Adjusted Price without tax = 0.8 * 60,

0.8 * 60 = 48,

With Tax = 1.06 * 48,

1.06 * 48 = 50.88

∴ New Price = 50.88

Answer:

Its $12.84

Step-by-step explanation:

20 percent of $60 is 12, and the sales tax is $.84, so you add those two together and you get $12.84! Hopes this helps and good luck!

Evaluate the expression 42 + 5/9y

Answers

Combine
5
9
5
9
and
y
y
.
42
+
5
y
9

ratio of width to length is 2:3 if the length 18 meters what is the width

Answers

Answer:

12

Step-by-step explanation: 18/3=6 6(2)= 12

What is meant by the included angle in SAS congruence theorem?

Answers

Answer:

The included angle means the angle between two sides. In other words it is the angle 'included between' two sides. In which pair of triangles pictured below could you use the Side Angle Side postulate (SAS) to prove the triangles are congruent? It is the only pair in which the angle is an included angle.

Step-by-step explanation:

An ice cream factory makes 375 quarts of ice cream in 5 hours. How many quarts could be made in 13 hours?

Answers

5580 Quarts
3720 Quarts per day

Answer:- 975 quarts of Ice cream is prepared in 13 hours.

Step-by-step explanation:

If 375 quarts of ice cream is made in 5 hours

then in 1 hour quantity of ice cream prepared is = 375/5=75

then in 13 hour quantity of ice cream prepared would be = 13×75=975 quarts.

Hope this helps you.

The Fun Guys game rental store charges an annual fee of $5 plus $5.50 per game

rented.

The Game Bank charges an annual fee of $11 plus $2.50 per game.

For how many game rentals will the cost be the same at both stores?

Answers

Answer:

2 games

Step-by-step explanation:

Given data

The Fun Guys game

charges  annual fee of  $5 plus $5.50 per game

let the number of games be x

and the total charges be y

The expression for the total is

y=5+5.5x---------------1

The Game Bank

charges an annual fee of $11 plus $2.50 per game.

y=11+2.5x---------------2

Equate 1 and 2 above

5+5.5x=11+2.5x

collect like terms

5.5x-2.5x= 11-5

3x= 6

divide both sides  by 3

x= 6/3

x= 2

It will take 2 games

are 2x3 and 4x4 like or unlike terms

Answers

Answer:

They are like terms

Step-by-step explanation:

Answer:They are like terms!

Step-by-step explanation:

38 < 4x - 10
help me out plz n ty

Answers

Answer:

Step-by-step explanation:

Bringing like terms on one side

38 + 10 < 4x

48 < 4x

48/4 < x

12 < x

graph a line that contains the point (3,-6) and has slope of -1/2​

Answers

Answer:

Step-by-step explanation:

Let the equation of the line is,

y = mx + b

Here, m = slope of the line

b = y intercept

Since, m = -[tex]\frac{1}{2}[/tex]

Equation of the line will be,

y = [tex]-\frac{1}{2}x+b[/tex]

Since, a point (3, -6) lies on the line,

-6 = [tex]-\frac{3}{2}+b[/tex]

b = -6 + 1.5

b = -4.5

Equation of the line will be,

[tex]y=-\frac{x}{2}-\frac{9}{2}[/tex]

Table for the points on the graph,

x      -4         -3         -2        -1          0        

y      -2.5      -3       -3.5      -4       -4.5    

Plot these points and join them to get the graph of a line.

Plz help me I will give you brainliest and 10 points

Answers

Answer:

0.08522

Step-by-step explanation:

find the common difference of the arithmetic sequence -2,-4,-6

Answers

Answer:

-2

Step-by-step explanation:

-4-(-2) = -2

-6-(-4) = -2

if angle KLJ~angle VWU. Find the x value

Answers

Answer:

17

Step-by-step explanation:

Since angle KLJ~angle VWU are similar :

KL / WV = KJ/ UV

(25 / 20) = (4x - 23 / 2x + 2)

Cross multiply :

25(2x + 2) = 20(4x - 23)

50x + 50 = 80x - 460

50x - 80x = - 460 - 50

-30x = -510

x = 510 / 30

x = 17

f(x) = 5x^2 + 14
g(x) = 4x + 8
What is f(g(-8))?

Answers

Answer:

it is 24

Step-by-step explanation:

i did andn i got 1000

Please help! I could fail if I don’t get theese right

Answers

Answer:

b ruh its c

Step-by-step explanation:

Answer:

c.

Step-by-step explanation:

I need help with this ​

Answers

All you have to do is cross multiply!

Ur answer to the first one is 9/10

Ur answer to the second ine is 4/5

Answer:

Step-by-step explanation:

Mr. Chiu made a dot plot after asking his students a question. A dot plot titled How Many Hours Did you Study for the Math Test Question mark going from 0 to 6. 0 has 1 dot, 1 has 2 dots, 2 has 3 dots, 3 has 2 dots, 4 has 1 dot, 5 has 2 dots, and 6 has 1 dot. Based on the dot plot, which statements are correct? Check all that apply. Eleven students answered Mr. Chiu's question. Twelve students answered Mr. Chiu's question. Three people studied for two hours. Three people studied for three hours. Everyone who responded studied for at least one hour. Four people studied for four or more hours.

Answers

Answer:

b,c and f

Step-by-step explanation:

Answer:

B Twelve students answered Mr. Chiu’s question.

C Three people studied for two hours.

F Four people studied for four or more hours.

Step-by-step explanation:

Trust me on this, also can I have brainiest please?

Hope you do well! :D

Two trains, Train A and Train B, weigh a total of 381 tons. Train A is heavier than Train B.
The difference of their weights is 193 tons. What is the weight of each train?
I need this answer quick!

Answers

Answer:

Train A is 287 tons

Train B is 94 tons

Step-by-step explanation:

My method of solving it may have been a bit different from how you were taught. I divided 381 by 2 to give both trains an equal weight of 190.5 tons. I then divided the difference, 193, by 2 to get 96.5 tons. I subtracted the new difference from the weight of Train B and added it to train A. To double check, you can grab a calculator and see that their weights are equal to 381.

I WILL MARK BRAINLYEST PLZ HELP IM BEING TIMED!!!!!
Triangle 1 is transformed onto triangle 2 in the graph below.
On a coordinate plane, triangle 1 is rotated to form triangle 2.
Which statement about the transformation is true?
The transformation is a reflection because triangle 2 is a flip of triangle 1.
The transformation is a dilation because triangle 2 is a different size than triangle 1.
The transformation is a vertical translation because triangle 1 slid vertically.
The transformation is a rotation because triangle 2 is a quarter-turn of triangle 1.

Answers

Answer:

c or d

Step-by-step explanation:

PLS MATH QUIZZ

Jeremiah invested $70,000 in an account paying an interest rate of 6.8% compounded daily.Assuming no deposits or withdrawals are made, how long would it take, to the nearest tenth of a year, for the value of the account to reach $99,000?

Answers

Answer:

t≈

5.1

Step-by-step explanation:

A=99000 P=70000 r=0.068 n=365

Given values

99000

70000

(

1

+

0.068

365

)

365

t

70000(1+

365

0.068

)

365t

Plug in values

99000

=

99000=

70000

(

1.0001863

)

365

t

70000(1.0001863)

365t

Simplify

99000

70000

=

70000

99000

=

70000

(

1.0001863

)

365

t

70000

70000

70000(1.0001863)

365t

Divide by 70000

1.4142857

=

1.4142857=

1.000186

3

365

t

1.0001863

365t

log

(

1.4142857

)

=

log(1.4142857)=

log

(

1.000186

3

365

t

)

log(1.0001863

365t

)

Take the log of both sides

log

(

1.4142857

)

=

log(1.4142857)=

365

t

log

(

1.0001863

)

365tlog(1.0001863)

Bring exponent to the front

log

(

1.4142857

)

log

(

1.0001863

)

=

log(1.0001863)

log(1.4142857)

=

365

t

log

(

1.0001863

)

log

(

1.0001863

)

log(1.0001863)

365tlog(1.0001863)

Divide both sides by log(1.0001863)

1860.731865

=

1860.731865=

365

t

365t

Use calculator

1860.731865

365

=

365

1860.731865

=

365

t

365

365

365t

Divide by 365

5.0978955

=

5.0978955

It would take 5 year for the value of the account to reach $99,000.

What is Future Value?

The worth of a current asset at some point in the future based on an estimated rate of growth is known as future value (FV). For investors and financial planners, the future value is crucial because they use it to predict how much an investment made now will be worth in the future.

Given:

P = $70000

R= 6.8%

SV = $99000

For Compounded Daily

A = P [tex](1+ (R/100)/ 365) ^{365n[/tex]

99000 = 70000 [tex](1+ (0.068/100)/ 365) ^{365n[/tex]

[tex](1+ (0.068/100)/ 365) ^{365n[/tex] = 1.414

[tex](1. 00019)^{365n[/tex] = 1.414

[tex]1.072^n[/tex] = 1.414

and, n=5 years

Hence, it would take 5 year for the value of the account to reach $99,000.

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Write System of Equations from Context

Mason owns a trucking company. For every truck that goes out, Mason must pay the driver $13 per hour of driving and also has an expense of $1 per mile driven for gas and maintenance. On one particular day, the driver drove an average of 30 miles per hour and Mason's total expenses for the driver, gas and truck maintenance were $258. Write a system of equations that could be used to determine the number of hours the driver worked and the number of miles the truck drove. Define the variables that you use to write the system.

Answers

Answer:

x and y

Step-by-step explanation:

Which postulate proves that the triangles below are similar?
SSS
AA
SAS
These triangles are not similar

Answers

Answer:

AA~

Step-by-step explanation:

These triangles are similar but not congruent. One triangle is bigger than the other, meaning none of the side lengths are the same. On the triangles, two angles are given, a 53 degree and a 90 meaning that you would us the AA rule to determine if they are similar. Which they are.

The two triangles are similar triangles using AA postulate.

What are Similar Figures?

Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. It is denoted by the symbol "~".

Given one of the angles in both the triangles is equal to 53°, the other angle is 90°, which are also the vertical angles to each other. As shown below.

Hence, the two triangles are similar triangles using AA postulate.

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*PLEASE HELP ME ASAP* Sydnis room is 32 ft by 40 ft. She needs to make a scale drawing of her room that is 8 in. by 10 inc. What is the scale she needs to use?
1 inch = 8ft
1 inch = 4 ft
1 inch = 2 ft
1 inch = 1 ft

Answers

1 inch equals four 4 because 32 divided by 4 is 8 and 40 divided by 4 is 10
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