Mathematics College

Evaluate -2x^2y, if x=-3 and y=-1.
-12
18
O 12
-18

Answers

Answer 1

Answer:

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

questions

Step-by-step explanation:

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Related Questions

y=-X+4
What is the slope and Y-intercept?

Answers

Answer:

Slope = 1 Y-intercept=4

Step-by-step explanation:

The relationship between the number of grams of carbohydrates in a loaf of bread and the number of calories the loaf contains can be modeled by the equation y approx15x-25 where the number of grams of carbohydrates, and y is the number of calories. According to the model, which statements are correct? Select all that apply.

Answers

Answer:

A and C

Step-by-step explanation:

Slope of the equation is 15, that represents calories per gram of carbohydrate increased.

What is linear equation?

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation.

Given equation,

y = 15x - 25

x is number of grams of carbohydrates in bread

y is number of calories in bread

Comparing it with y = mx + c

slope m = 15

y - intercept c = -25

Slope represents calories per gram of carbohydrate increased.

Hence, 15 is slope of the equation, which represents calories per gram of carbohydrate increased.

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In a marathon,mike finished ahead of fred.emma finished after fred.john finished after agnes and agnes finished later than emma.in what sequence did each of them finish the marathon?​

Answers

Answer:

Mike Fred Emma Agnes John

Step-by-step explanation:

Mike Fred Emma Agnes John

Create a list of the names in the order they're given and order them through the information provided.

Which of the following fractions is smaller than
1/2

Answers

the answer is C: 3/7

Pls help now ok am tired

Answers

Answer: -9.5

Step-by-step explanation:

10 hope it’s that........

So. . . . what is ( 7 + 21 + 18 + 13 ) ?

Answers

Answer:

59

Step-by-step explanation:

Answer:

59 lol. Ty for the free points. Btw hello

Step-by-step explanation:

Can a triangle be formed with the sides lengths of 7 cm, 5 cm and 12 cm?

Answers

Answer:

NO because 7+5=12

The sum must be larger (not equal to) the longest side. If it's exactly the same, there's no room to for the shorter two sides to angle up to form a triangle.

Graph a line with a slope of 3 that goes through the point (1, 3).

X intercept and y intercept 20 POINTS

Answers

Answer:

Step-by-step explanation:

The slope intercept form of a line is y=mx+b where m is the slope and b is the y intercept. We are given a slope of three so

y=3x+b, using point (1,3) we can solve for b

3=3(1)+b, 3-3=0 so b=0 then our line is

y=3x

The x intercept is when y=0 and this occurs when x=0 or the point (0,0)

The y intercept occurs when x=0, this occurs when y=0 or the point (0,0)

please help, asap! ive tried everything to solve this and everything has been wrong so far.

Answers

Answer:

Step-by-step explanation:

$575.68

what is the answer to this question

Answers

Answer:

0

Step-by-step explanation:

The answer is A srry if I’m wrong

I need help. I don't get this

Answers

Answer:

1) 2(x+1)(x+5)

2) (x-10)(x-4)

Step-by-step explanation:

help if you can please

Answers

Answer:

The answer is 44

All Triangles add up to 180° so since you already have two of the three angles you add them up and subtract by 180 to find the missing angle which in your case Is E

Answer: 44 because the I side of a triangle equals 180

Which of these expressions represent solutions to the equation y3 = 64?

*Multiple answers can be selected*

Answers

Answer:

4, ∛64, -∛64

explanation:

they all mean the same thing

The expression [tex]y^{3} = 64[/tex] can be written as :[tex]y= \sqrt[3]{64}[/tex] or y= 4

The correct option is (II) and (VI)

What is cube root?

The cube root of a number is the factor that we multiply by itself three times to get that number.

We have given that:

[tex]y^{3} = 64[/tex]

 we can write it as:

[tex]y= \sqrt[3]{64}[/tex]

y = [tex]\sqrt{4*4*4}[/tex]

y= 4

The answer is : [tex]y^{3} = 64[/tex]

[tex]y= \sqrt[3]{64}[/tex] or y= 4

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Tanya purchases gifts for two friends The first is a purse for $19.99, and the second is pair of shoot. Her total is $45.67 before tax, How much did she spend on the shoes?​

Answers

Answer:

$25.68​

Step-by-step explanation:

Cost of purse = $19.99

Cost of shoe pairs = x

Total cost = $45.67

Total cost = cost of purse + cost of shoe pairs

$45.67 = $19.99 + x

x = $45.67 - $19.99

x = $25.68

Hence, cost of shoe pair = $25.68

If y = 5x-2 were changed to y = 3x-2how would the graph of the new
function compare with the first one?

Answers

Hi there! The answer is B. it would be less steep.

The change of the function (in this case) influences the slope of the line. Since we've modified the slope from 5 to 3/4, the line will be less steep.

Graduated containers are used to measure ingredients by weight. true or false

Answers

Answer:

false

Step-by-step explanation:

they are used to measure mL / L

Combine Like Terms:
2x + 3 - 5x + 8x + 3x2 + 2



Help please

Answers

Answer:

14x + 5

Step-by-step explanation:

group all the varaibles with x

2x - 5x + 8x + 3x^2

-3x + 8x + 9x

5x + 9x

=14x

now the regular numbers

3 + 2

=5

now put them together to get

14x + 5

A circle has a radius of 15 feet. What is the area of
the circle?

Answers

Answer:

A = 706.5 ft 2

Step-by-step explanation:

A = π ( 15  ft ) 2

A = π 225ft 2

A = 225 π  ft 2

A = 225 ⋅ 3.14  ft 2

9 times 10 to the power of 7 is how many times as large as 3 times 10 to the power of 3

Answers

Answer:

30000

Step-by-step explanation:

9×10=90

90 power 7=90[10000000]

3×10=30

30 power 3=30[1000]

900000000÷30000=30000

What is the area of this face?

please help!!!!

Answers

Answer:

it is 52 i did this ireafy before

Answer:

28 in^2

Step-by-step explanation:

overall face area =10x4=40

cutout area=6x2=12

40-12=28 in^2

PLEASE HELP!! DUE TONIGHT!!!

Answers

Answer:

Step-by-step explanation:

Even ( I think)

positivie ( I think )

x intercept - (0,0)(-2,0)(-4,0)

y intercept - (0,0)

You take your favorite teacher out to lunch. The total
cost of your meals was $37.50. You want to add a 20%
tip. What is the new final total?

Answers

Answer:

it would be 45 total with the 20%

how many seconds in 3 hours and 26 seconds​

Answers

Answer:

10826

Step-by-step explanation:

Answer:

1 hour = 60× 60= 3,600 seconds

3 hour = 3600 ×3=10,800 second

So, 3 hours 26 seconds = 10,800+26

= 10,826 second (Answer )

what is x? 6(x+2)=2(x-3)
(Also I need good explanation please im very bad with my negatives and postives)​

Answers

Step-by-step explanation:

the answer is -2

I'll explain in commets

Answer:

-9/2

Step-by-step explanation:

6(x+2)=2(x-3)

6x+12=2x-6

6x-2x+12=-6

4x+12=-6

4x=-6-12

4x=-18

x=-18/4

simplify

x=-9/2

A TV is listed for 35% off. If the original price was $550, what is the sale price?

Answers

Answer:

357.50$

Step-by-step explanation:

550 x 35% =192.50$

550 - 192.50 = 357.50$

How to calculate percent off?
Divide the number by 100 (move the decimal place two places to the left).
Multiply this new number by the percentage you want to take off.
Subtract the number from step 2 from the original number. This is your percent off number.

A car averages 25 2/3
miles on a gallon of gas. How many miles can it travel on 8

Answers

205.28 miles is the correct answer

Answer:

205 1/3

Step-by-step explanation:

Because it travels an average of 25 2/3 on one gallon, you simply multiply it by 8 in order to find how many miles it travels on 8 gallons of gas.

Find the number that is exactly halfway between and
3/10 and 4/5

Answers

Answer:

0.550

Step-by-step explanation:

I WILL MARK BRAINLIST, HELP PLEASE
#1.At the beginning of the season, McDonald had to remove 5 orange trees from his farm. Each of the remaining trees produced 210 oranges for a total harvest of 41790 oranges.

Answers

The equation that represents the initial amount of range trees on MacDonald farm is 41790 = 210t - 1050.

The initial amount of trees is 204

How to form an equation ?

The equation that represents the initial amount of range trees on MacDonald farm can be calculated as follows;

Therefore,

number of trees presently = t - 5

Therefore,

41790 = 210(t - 5)

41790 = 210t - 1050

41790 + 1050 = 210t

42840 = 210t

t = 42840 / 210

t = 204

Therefore, the initial amount of trees is 204 .

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Which value is the solution for this equation2
2(a + 3) -4

Answers

Answer:

a=-1

Step-by-step explanation:

2(a+3) -4

you bring it to the other side

2a + 6-4 so 2a+ 2

2a =-2

a =-1

To get an A in her math class, Jada needs to have at least 90% of the total number of points possible. The table shows Jada’s results before the final test in the class.
Jada’s points total points possible
row 1 Homework 141 150
row 2 Test 1 87 100
row 3 Test 2 81 100
row 4 Test 3 91 100
Does Jada have 90% of the total possible points before the final test? Explain how you know.
Jada thinks that if she gets at least 92 out of 100 on the final test, she will get an A in the class. Do you agree? Explain.

Answers

yes jada has 90% for her test because row 2 and 3 have 71 100
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