Evaluate 3xy - y2 when x = -2 and y = 4
which one?
-30
-8
-40
-20

Answers

Answer 1

Answer:

-32 is what i got

Step-by-step explanation:


Related Questions

The length of a rectangular room is 8 feet more than twice the width. If takes perimeter of the room is 124 feet, what are its dimensions?

Answers

Hey there! I'm happy to help!

Let's call the length and width L and W respectively.

L=2W+8

2W+2L=124

We plug our value of L into the second equation and solve for W.

2W+2(2W+8)=124

We undo the parentheses with the distributive property.

2W+4W+16=124

Combine like terms.

6W+16=124

Subtract 16 from both sides.

6W=108

Divide both sides by 6.

W=18

We plug this W value into the first equation to solve for L.

L=2(18)+8

L=36+8

L=44

So, the length is 44 feet and the width is 18 feet.

Have a wonderful day! :D

the average weight of a mature human brain is approximately 1400 grams. what is the equivalent weight in kilograms? and in pounds? I NEED STEP BY STEP

Answers

Answer:

1.4

Step-by-step explanation:

you need to multiply 1400 by 0.001 because 1 gram is the equivalent to 0.001 kilograms

Answer:

1.4

Step-by-step explanation:

Mack thinks that natural numbers are a subset of irrational numbers. Is Mack correct?

Answers

Answer:

He is incorrect.Because if they are irrational they are the opposite.

Step-by-step explanation:

Simplify the complex fraction 1/6 / 1 3/8

Answers

Hey there!☺

[tex]Answer:\boxed{\frac{4}{33}}[/tex]

[tex]Explanation:[/tex]

[tex]\frac{1}{6}/1\frac{3}{8}[/tex]

Let's divide both fractions.

[tex]\frac{1}{6}1/\frac{3}{8}=\frac{4}{33}[/tex]

[tex]\frac{4}{33}[/tex] is our final answer.

Hope this helps!

PLEASE HELP< BEST ANSWER WILL GET MARKED BRAINIEST The stadium is at (-2,3) and the high schools (1,8). What is the shortest driving distance (in blocks) between these two locations? Can you figure this out without looking a the grid

Answers

Answer:

The shortest driving distance between stadium and high schools is 5.831 units.

4 Reynaldo paid $41.25 for 5 pizzas. Each pizza cost the same amount. What was the cost of each pizza in dollars and cents?

Answers

Answer: Each pizza costed $8.25

Step-by-step explanation:

You have to divide $41.25 / 5 to find the cost of each pizza

Help me please 20 is 1/10 of

Answers

Answer:

20 is 1/10 of 200

Step-by-step explanation:

20* 10 = 200

Answer:

the answer is 200/1

Express each number in scientific notation 4,672,000

Answers

Answer:

4×1000000 6×100000 7×10000 2×1000

Step-by-step explanation:

Answer:

[tex]4.672 * 10^{6}[/tex]

Step-by-step explanation:

move the orginial number 6 decimal points to the left to determine its scientific notation

4672000

467200.0

46720.00

4672.000

467.2000

46.72000

4.672000

Solve for a :3a = 4.2

Answers

Answer:

3 * 1.4 = 4.2

Plz help I’ve been doing this for 6 days

Answers

Hi there! :)

t ≥ -2

2t + 8 ≥ -4(t + 1)

Distribute the coefficient outside of the parenthesis:

2t + 8 ≥ -4(t) -4(1)

2t + 8 ≥ -4t - 4

Add 4t to both sides:

6t + 8 ≥ -4

Subtract 8 from both sides:

6t ≥ -12

Divide both sides by 6:

t ≥ -2.

Answer: t ≥  -2/3

Step-by-step explanation:

Distribute the -4 into (t + 1). 2t + 8 ≥  - 4t - 4Add 4t on both sides. 6t + 8 ≥  -4Subtract 8 on both sides. 6t ≥  -4Divide by 6 on both side. Then , simplify -4/6 by 2 on both the numerator and denominator. t ≥ -2/3  

MARK BRAINLIEST


The left and right page numbers of an open book are two consecutive integers whose sum is 473. Find these page numbers.


The two page numbers are ______

(Use a comma to separate
answers as needed.)


PLEASE HELP MARK BRAINLIEST

Answers

Answer:

263,267

Step-by-step explanation:

473/2 is 263.5 and so just add .5 to one and subtract .5 from the other

236, 237 is the answer to this problem. Hope I helped

2. A pole casts a shadow that is 15 feet long. A 6-foot tall man casts a shadow that is 5 feet long.
What is the height of the pole?

14 feet
17 feet
12.5 feet
6 feet

Answers

Answer:

14

Step-by-step explanation:

5-6=1

15-1=14


1. Rocky has already logged forty miles on his daily running program. He runs two miles per
day. Robin has logged ten miles on her daily running program. She is running at a rate of 5
miles per day. After how many days will Rocky and robin logged the same number of met
miles?

Answers

Answer:

After 10 days rocky and robin will log the same number of met miles which will be 60 miles.

Step-by-step explanation:

This is because by using y=mx+b and graphing the two equations you can find their intersection which is (10,60).

A function is given. g(x) = 4 x + 7 ; x = 0, x = h (a) Determine the net change between the given values of the variable. Incorrect: Your answer is incorrect. (b) Determine the average rate of change between the given values of the variable. Incorrect: Your answer is incorrect.

Answers

Answer:

4h

Step-by-step explanation:

We are expected to solve for the change given the following values of x

0,h

so we substitute x= 0 and x=h in the given expression, get the result, and subtract the results from each other

for x=0

[tex]g(x) = 4 x + 7\\\\g(0)=4(0)+7\\\\g(0)=0+7\\\\g(0)=7[/tex]

 

for x=h

[tex]g(x) = 4 x + 7\\\\ g(h)=4(0)+7 \\\\g(h)=4h+7 \\\\g(h)=4h+7[/tex]

The change would be

[tex]g(h)-g(0)= (4h+7)-7\\\\g(h)-g(0)= 4h+7-7\\\\g(h)-g(0)= 4h[/tex]

January, Scott earned $8,999. In February, he earned $2,387 more than in January. In March, Scott earned the same amount as in February. How much did Scott earn altogether during those three months?

Answers

Answer:I believe it's 31,771

Step-by-step explanation: you first need to add 8,999 + 2,387 to get 11,386 then add 11,386 + 11,386 to get 22,772 and then add 8,999 to get 31,771.

Scott earns $31,771 altogether during those three months.

What are Arithmetic operations?

Arithmetic operations can also be specified by the addition, subtract, divide, and multiply built-in functions.

+ Addition operation: Adds values on either side of the operator.

For example 4 + 2 = 6

We have to determine that Scott earn altogether during those three months.

We have been given that in January, Scott earned $8,999.

In February, he earned $2,387 more than in January.

So we have to add the amount of January and 2,387, we get

⇒ 8,999 + 2,387 = 11,386

In March, Scott earned the same amount as in February.

So the amount of March = 11,386

Therefore, He earns altogether during those three months as

⇒ 8,999 + 11,386 + 11,386

Apply the Addition operation in the above expression,

⇒ 31,771

Hence, Scott earns $31,771 altogether during those three months.

Learn more about Arithmetic operations here:

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2x^2 + 19x + 40 = -2

Answers

Answer:

X = - 7/2 or -6

Step-by-step explanation:

2x^2 + 19x + 40 = -2

2x^2 +19x + 40+2 = 0

2x^2 + 12x +7x+42= 0

2x(x+6) 7(x+6) =0

(2x+7) (x+6) = 0

2x+7 = 0

2x = -7

2x÷2=-7÷2

X= -7÷2 and

X+6=0

X=-6

Plant and animal cells have ALL the same organelles. True or faulse?

Answers

Answer:

Step-by-step explanation:

False. They may have some that are the same, but not all.

Answer:

the answer is false hope this helped :)

spend he was on the river for4 hours?
3. Kerry charges $25.50 per lawn to cut grass on Saturdays and $28.50 per lawn to cut grass on Sundays.
If she cuts 4 lawns on Saturday and 5 on Sunday, how mush money will she earn?
A. $102
B. $171
C.$241.50
D. $2 44.50

Answers

D. $244.50

$25.50 x 4 = $102
$28.50 x 5 = $142.50
$102 + $142.50 = $244.50

Kerry will earn $244.50 in total.

What is unitary method?

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

Steps to Use Unitary Method

First, let us make a note of the information we have. There are 5 ice-creams. 5 ice-creams cost $125.

Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.

Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.

Given:

Kerry charges $25.50 per lawn to cut grass on Saturdays

and $28.50 per lawn to cut grass on Sundays.

If 4 lawns cuts in Saturday then the charges would be

=25. 50 x 4

=102

and, If 5 lawns cuts in Sunday then the charges would be

=28. 50 x 5

=142.5

Hence, the total she will earn 244.50.

Learn more about unitary method here:

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Find the sum. (-7/2z+4)+(1/5z-15)

Answers

Answer:

-(33+110z)/10z

Step-by-step explanation:

(-7/2z +4)+(1/5z -15)

from BODMAS, solving the one in the bracket

First(-7/2z +4)+(1/5z -15)

Find the Lcm

[-7/2z +4] +[1/5z -15]

(7+8z)/2z +(1-75z)/5z

find the Lcm which is 10z

[5(-7+8z) + 2(1-75z)]/10z

[(-35+40z)+(2-150z)]10z

(-35+2+40z-150z)/10z

(-33-110z)/10z

-(33+110z)/10z

The sum of the expression {(-7/2z) + 4} + (1/5z) - 15} is - 6/5z - 11.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

The sum of {(-7/2z) + 4} + (1/5z) - 15}.

= (-7/2z) + (1/5z) + 4 - 15.

= (-14 + 2)/10z - 11.

= - 12/10z - 11.                                    (LCM of 2z and 5z is 10z)

= - 6/5z - 11.

learn more about numerical expressions here :

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Tristan wants to build a square garden in his backyard. If the garden is going to be 64 ft squared,
how many feet of material will he need for the perimeter of the garden? *

Answers

Answer:

32

Step-by-step explanation:

8*8=64

8+8+8+8=32

(because there are 4 sides)

Answer:

32

Step-by-step explanation:

A girl studied for 5 2/3 hours daily. She devotes 2 4/2 hours of her time for science and mathematics. How much time does she devote for other subjects?

Answers

Given :

Number of hours studied daily , [tex]T=5\dfrac{2}{3}[/tex] .

Time given for science and mathematics is , [tex]t=2\dfrac{4}{2}[/tex] .

To Find :

How much time does she devote for other subjects .

Solution :

Let , time devote for other student is x .

So , Time left for other subject = Total time - Time taken by science and mathematics .

[tex]x=T-t\\\\x=5\dfrac{2}{3}-2\dfrac{4}{2}\\\\x=\dfrac{(5\times 3)+2}{3}- \dfrac{(2\times 2 )+4}{2}\\\\x=\dfrac{17}{3}-4\\\\x=\dfrac{17-(4\times 3)}{3}\\\\x=\dfrac{5}{3}=1\dfrac{2}{3}[/tex]

Therefore , time devote for other subject is [tex]1\dfrac{2}{3}[/tex] hours .

Hence , this is the required solution .

p² – 40q+p- 2q +49² 38
Factor Each Polynomial Completely​

Answers

Answer:

The expression is not factorable

with rational numbers

x -0.63 = 1.16 I couldn't find the answer can someone please help me?​

Answers

Answer:

x= 1.79

Step-by-step explanation:

x-0.63=1.16 add 0.63 to both sides

x= 1.79

Answer:

x =1.79

Step-by-step explanation:

x -0.63 = 1.16

Add .63 to each side

x -0.63+.63 = 1.16+.63

x =1.79

Shawn got a job as an Uber driver. He spends $180 on gas per month and charges $35 per ride. Write a function rule for Shawn's profit for one month: Question Blank type your answer... If Shawn gives 15 rides in August, he will have a profit of $ Question Blank type your answer... .

Answers

Answer:

$345

Step-by-step explanation:

35(15)-180

345

Mr. Rivera pours 2 cups of blue paint into a jar for each art station. How many jars can
he fill with 1 gallon of blue paint?​

Answers

Given :

Mr. Rivera pours 2 cups of blue paint into a jar for each art station.

1 cup = 8 ounces.

1 gallon = 128 ounces.

To Find :

How many jars can  he fill with 1 gallon of blue paint.

Solution :

Since, a jar is filled with 2 cups.

1 jar = 2 × 8 = 16 ounces.

So, number of jars required to fill 1 gallon of blue paint is :

[tex]n=\dfrac{128}{16}\\\\n=8[/tex]

Therefore, 8 jars are required to fill 1 gallon of blue paint.

Hence, this is the required solution.

Your phone plan cost $34.99 per month plus $.16 for each text message you sent receive. You have at most $40 to spend on your phone bill what is the maximum number of text messages that you can send receive next month

Answers

Answer:

250 messages

Step-by-step explanation:

Cost per message: $0.16

Maximum bill: $40

Maximum # of messages = $40/$0.16 = 250 messages

Linear function that are proportional always pass through what point

Answers

Answer: Directly proportional relationships they always pass through the origin (0,0). There are other linear relationships that dont pass through the origin.

PLS HELP, a group of friends bought 6 movie tickets. they used a coupon for $2.00 off the cost of one of the tickets, and their total cost with the coupon was $50.50. write an equation that can be used to determine the regular cost C of each movie ticket​

Answers

Answer:

We need more information about C.

Which statement is true of two similar figures? A.Corresponding sides are always congruent. B.They are always different sizes, but the same shape. C)Corresponding angles are always congruent. D)The areas of the figures have the same ratio as the ratio of corresponding sides.

Answers

Answer:

option d is the rut answe

What’s the slope? Please answer ASAP

Answers

Answer:

I think it is - 1/2 by the way love ur profile picture and username

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