Evaluate -2 x 2y , if x = -3 and y = -1.

Answers

Answer 1

Answer:

-12

Step-by-step explanation:

hope this helps

Answer 2

Answer:

-12

Step-by-step explanation:

i did math


Related Questions


log2 (3x – 1) = log4 (x + 5) Solve the equation

Answers

Answer: x=11

Step-by-step explanation:

2(3x-1)=4(x +5)

3x-1=2(x+5)

3x-1=2x+10

3x=2x+10+1

3x=2x+11

3x-2x=11

x=11

plssss helpppp
dalia bought a few swirl marbles and divided it equally among four of her friends and her brother jake. while playing jake lost 2 marbles and has only 7 marbles at present. find how many marbles did dalia buy in all.

Answers

The total amount of marbles jake has =7+2 which is 9.

If jake has 9 marbles then the other four friends of daila also have 9 each because daila divided the marbles equally

9+9+9+9+9=45

Or 9x5 (daila shared between 5 peps)

Daila bought 45 marbles in total

I need help with C. Idk how to do it.

Answers

Answer:

after 1.25 hours

Step-by-step explanation:

1. make 130 your y value

  130 = 220 - 72x

2. subtract 220 from both sides

  -90 = -72x

3. divide by -72 on both sides

  1.25 = x

Is a continuous graph a graph with connected lines and curves? PLEASE help! WILL GIVE BRAINLIEST

Answers

Answer:

That's pretty much correct. A continuous function is one that has no breaks or holes. For example, 1/x+5 is not continuous (or discontinuous) because the domain does not include -5. However, I don't think it needs to necessarily have to have curves because all linear functions are continuous. Hope this helps! (I learned about this a few weeks ago in my pre-calc class lol)

Step-by-step explanation:

What type of number is 114

Answers

Answer:

odd number

Step-by-step explanation:

am pretty sure

Answer:

114 is just like any other number. It is just bigger than anything lower than that number. They is no difference within this number and any other number.

Step-by-step explanation:

It a math question so please help me out.

Answers

Answer: I say B

Step-by-step explanation:

Answer:

A. t=-2h+32

Step-by-step explanation:

I'm pretty sure it's A. If the temperature starts at 32 degrees at midnight, that is going to be it's own number, not joined with a variable. In contrast, the temperature drops 2 degrees every hour, so the variable h will have a 2 with it (2h). But because it drops, the 2h will actually be negative. The equation would be written like this...

t=-2h+32, which is answer A.

I hope you understood! Good luck on your assignment and have an awesome day C:

a^2+b^2=c^2
solve in terms of a

Answers

Step-by-step explanation:

a² + b² = c²

a² = c² - b²

√a² = √c² - √b²

a = c - b

What is the ratio of rectangles to circles?

Answers

4:5
There are 4 rectangles, and 5 triangles. Therefore the ratio is 4:5.

many years ago it used to cost more to call people long distance. Let’s say the first 5 minutes cost 4 dollars, but the. every minute after that cost $0.50 per minute. how much would it have cost for a 20 minute phone call?

Answers

Answer:

Step-by-step explanation

it would be 80$ for a 20 minute phone call.

Answer:

Step-by-step explanation:

5=4

6=4.50

7=5

8=5.50

9=6

10=6.50

11=7

12=7.50

13=8

14=8.50

15=9

16=9.50

17=10

18=10.50

19=11

20=11.50

multiply the polynomials below. SHOW ALL WORK

(x−7)(2x−5)

Answers

2x^2-19x+35

show work:
=(x+-7)(2x+-5)
=(x)(2x)+(x)(-5)+(-7)(2x)+(-7)(-5)
=2x^2-5x-14x+35
=2x^2-19x+35

Which expression is equal to √520−√345?

11√5

-√5

−11√5

√5

Answers

The answer is square root 5

The value of the expression when simplified is equal to √5. The correct option is D.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The given radical expression can be simplified as shown below,

5√20 - 3√45

Write the under root values in the factored form,

= 5√(4×5) - 3√(9×5)

Simply the function that can be simplified,

= 5(√4 × √5) - 3(√9 × √5)

= 5(2√5) - 3(3√5)

= 10√5 - 9√5

Take √5 as the common term from the two of the given terms,

= (10 - 9) √5

= 1 √5

= √5

Hence, the value of the expression when simplified is equal to √5.

Learn more about Expression here:

https://brainly.com/question/13947055

#SPJ2

Pleasee help! I don’t know the answers. I’m struggling

Answers

Answer:

1. Total amount of the five checks is $132.95.

2. She owed $16.47 before tax.

3. quizzes- 53 pts

   projects-129 pts

   tests-272 pts

   for grading period-454 pts

4. Tim-399

   Jane-401

   Felipe-412

   Chen-419

   team-1,631

Can i get brainliest please?

Write an equation in point slope form of the line graphed below. (Use the right hand point)

Answers

Answer:

y+1=1/2(x-1)

Step-by-step explanation:

The point is (1,-1) and the slope is 1/2, so you plug in the number in the blanks y-___=___(x-___).  The y in the first the slope in the second and the x in the third.

The equation is in slope-intercept form y = -x/4 -3/4

What is a slope?

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction.

Given:

A graph of the line.

Assuming the graph measurement is 1 unit.

Then we interpreted two points (-1, 1) and (3, 0).

If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,

then the equation of line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

y - 1 = (-1/4)(x + 1)

y - 1 = -x/4 -1/4

y = -x/4 -3/4

Therefore, the equation is y = -x/4 -3/4

To learn more about the slope;

brainly.com/question/3605446

#SPJ2

PLZZZ HELP ME!!!

A company is selling hot air balloon rides to raise money for a children’s charity. the cost of going on a balloon ride is a flat rate of $50 and $15 per hour of flight time. Ms. Lopez plans to donate at most $85. Find the number of hours she can spend in the balloon ride. Round your answer to the nearest hour.

Answers

Answer:

2

Step-by-step explanation:

(85-50) / (15) = 35 / 15 = 2.33 hrs, round to the nearest hour that would be 2 hrs

2 hours
First write the equation
Then subtract 80-50
After that 35/15

50 POINTS for functions

Answers

Answer:

im going with G

Step-by-step explanation:

I believe it is G because the negative 3 was located on the whole section on the graph.

I need help fast plz

Answers

Answer:

1. m = -3, b = 4

2. m = 0, b = 7

3. m = -1.5, b = -4

4. m = 3, b = 0

5. m = 1.5, b = -7

scientific notation of 26,00,000 is what ​

Answers

Answer:2.6*10^5

Step-by-step explanation:

Pedro created the model below.



What percent is represented by the shaded region of the model?

Answers

Answer:

3% of 8%

Step-by-step explanation:

The largest angle is a triangle is 110°. Of the remaining two angles, one is 4° less than the other angle. Find the
measure of the three angles

Answers

Answer:

Do 180-110=70 Then have it where 70/2=35. 35+4=39, 35-4=31, so the three angles are 39, 110, and 31.

Step-by-step explanation:

hi someone pls help me with #2

Answers

Answer:

B

Step-by-step explanation:

For me and Thomas uhh

Answers

Answer:

what does that question mean?

if y=60 when x=80, find x when y=-20.

Answers

Answer:

x= 26

Step-by-step explanation:

Im not sure but i had this same quistion on a quiz and i got it correct

this question is driving me nuts The rest says the right triangle​

Answers

Answer:

C

Step-by-step explanation:

The number x is a two-digit number.


• When x is divided by 9, the remainder is 1.


• When x is divided by 10, the remainder is 3.


What is the remainder when x is divided by 11?


Be sure to explain how you got your answer.

Answers

Answer:

x = 73

x ÷ 11 = 73 ÷ 11 = 6.636 or [tex]6\frac{7}{11}[/tex] or  ( 6 remainder 7)

Step-by-step explanation:

1. In order to determine the value of x, we will first find a two-digit multiple of 9 that has a unit value of (2)

Multiples of 9 = 18, 27, 36, 45, 54, 63, 72, 81, ...

from the above, the multiple of 9 that has a unit value of '2' is 72 ( 7 tens and 2 units)

2. Next, we will add 1 to the multiple of 9 found in step 1 above, to create a unit value of '3'. This is because when the number is divided by 9, we want to have a remainder of 1, and when the number is divided by 10, and we want to have a remainder of 3

72 + 1 = 73 ( 7 tens and 3 units)

3. Finally, let us divide the number in step 2 above by 10

73 ÷ 10 = 7 remainer 3.

Now the number 73 satisfies the three conditions given in the question:

1) The number x is a two-digit number.

73 is a two-digit number  

2) When x is divided by 9, the remainder is 1.

73 ÷ 9 = 8 remainder 1

3) When x is divided by 10, the remainder is 3.

73 ÷ 10 = 7 remainder 3

∴ x = 73

x ÷ 11 = 73 ÷ 11 = 6.636 or ( 6 remainder 7)

This diagram shows a pre-image A ABC, and its image,
AA"B" C", after a series of transformations.
Select from the drop-down menus to correctly complete the
statements.
A ABC is
4 to
reflected across the y-axis
become A A'B'C'. Then AA'B'C' is
Choose...
to become
A A"B" C". Because the transformations are
Choose...
the pre-image and image are
Choose...

Answers

ABC is rotated 90 degrees clockwise to become A'B'C'

A'B'C' is rotated 180 degrees clockwise to become A"B"C"

Answer:

ABC is reflected across the y-axis to become △A′B′C′. Then ​△A′B′C′​ is rotated 90 degrees counterclockwise about the origin to become ​△A′′B′′C′′​ . Because the transformations are both rigid, the pre-image and image are congruent.

Step-by-step explanation:

took the test

Question 15 David went for a run in his town. He ran from his house to the school, which is 1.22 miles. Then he ran 3 laps around the school track. Each lap is 0.25 miles. Then he ran halfway to the gas station. The distance from the school track to the gas station is 2.68 miles. Finally he ran straight home, which is 0.49 miles. What is the total distance David ran?

Answers

Distance covered to travel house and school, d1 = 1.22 miles.

Distance covered in 3 laps, d2 = 3 × 0.25 = 0.75 miles.

Distance between halfway to the gas station from school,

d3 = 2.68÷2 = 1.34 miles.

Distance from his last position to home, d4 = 0.49 miles.

So, total distance covered is :

[tex]D = d1+d2+d3+d4\\\\D=(1.22+0.75+1.34+0.49)\ miles\\\\D=3.8\ miles[/tex]

Therefore, total distance covered is David is 3.8 miles.

Hence, this is the required solution.

If f(x)=4^x-8 and g(x) =5x+6, find (f+g)(x)

Answers

Answer:

C

Step-by-step explanation:

(f + g)(x) = f(x) + g(x), then

f(x) + g(x)

= [tex]4^{x}[/tex] - 8 + 5x + 6 ← collect like terms

= [tex]4^{x}[/tex] + 5x - 2 → C

(f+g)(x)=f(x)+g(x)=4^x-8+5x+6=4^x-2+5 or 4^x+5x-2 answer is C

Plz answer these for me it’s timed

Answers

Answer:

Y=3x+5

Step-by-step explanation:

Are the following equations an identity

6y + 9 - y = 7y - 2(y - 1)


7m - 2 = 8m + 4 - m

Answers

Answer:

No Solution

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

4. In Canadian coins, 16 quarters is equal in value to 2 toonies.
number of quarters
number of toonies
1
16
2
20
24
a. Fill in the table.

Answers

Answer:

If 16 quarters is equal to 2 toonies, then 1 quarter is;

16 : 2

1 : x

16x = 2

x = 2/16

x = 1/8 toonies

20 quarters would therefore be;

= 1/8 * 20

= 2.5 toonies

24 quarters would be;

= 1/8 * 24

= 3 toonies

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