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3 years ago

Grayson evaluated the expression 4x^2 + 2y x= 3, y = 2 4 (3)^2 + 2(2) 144 + (4) what error did Grayson make ?

Mathematics

1 answer:

grandymaker [24]3 years ago

8 0

Answer:

Grayson did not simplify the question

Step-by-step explanation:

if this didnt help i am sorry :(

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Bill drove his car at a constant speed while on a trip.

antoniya [11.8K]

Answer:

it is b

Step-by-step explanation:

bill rode at 55 miles per hour and kevin rode at 45 miles per hour

5 0

3 years ago

Rick bought a total of 8 pounds of steak and chicken. If steak costs 13.50 per pound and chicken costs 3.25 per pound and he pai

ohaa [14]

Rick bought 5 pounds of steak.

Step-by-step explanation:

Given,

Cost per pound of steak = 13.50

Cost per pound of chicken = 3.25

Total bought = 8 pounds

Total paid = 77.25

Let,

x represents the pounds of steak purchased

y represents the pounds of chicken purchased

According to given statement;

x+y=8 Eqn 1

13.50x+3.25y=77.25 Eqn 2

Multiplying Eqn 1 by 3.25

$3.25(x+y=8)\\3.25x+3.25y=26\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(13.50x+3.25y)-(3.25x+3.25y)=77.25-26\\13.50x+3.25y-3.25x-3.25y=51.25\\10.25x=51.25\\$

Dividing both sides by 10.25

$\frac{10.25x}{10.25}=\frac{51.25}{10.25}\\x=5$

Rick bought 5 pounds of steak.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

4 0

3 years ago

Z+14.5=5.4 z= -14=c-10 c= please help

natali 33 [55]

Answer:

k= -7

Step-by-step explanation:

multiple both sides of the equation by 56.

16k - 21 = -133

move the constant to the right hand side and change its sign.

16k = -133 + 21

Calculate the sum.

16k= -112

Divide both sides by 16.

k = -7

Solution is K = -7

Part two.

Take away 19.5 from 40 to get your answer.

your answer is then less than forty so it's the symbol <.

I am not entirely sure on this second part I would get someone to double check it as I'm not the best at inequalities and such. If any help is needed with what I done just ask.

6 0

3 years ago

i want to get rid of my points and give back to the community of brainly its helped me so much and i and just wanted to say than

Tju [1.3M]

Answer:

My favorite color is aqua and pink

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The next two systems do NOT have opposite like terms

Sindrei [870]

Answer:

x = 10

y = 6

Step-by-step explanation:

Multiply second equation with -1 and then add it up with first equation

(-1)*(6x - 7y) = 18

-6x + 7y = -18

6x - 6y - 6x + 7y = 24 - 18 add like terms

y = 6 to find the value of x use this information

6x - 6y = 24 replace y with 6

6x - 6*6 = 24

6x - 36 = 24 add 36 to both sides

6x = 60 divide both sides by 6

x = 10

8 0

2 years ago