65 points and brainliest please help

Answer:

if you solve the equation it is 8 but the equation is 5-(-3) or 5+3 because two negatives equal a plus

Answer:

8

Step-by-step explanation:

The -3 is just substituting for the x. So if x=-3 you plug in -3 for x in the formula.

So when you plug it in you will have 5- -3. The two negative signs will make a positive. So you will have 5+3 and 5+3=8.

So f(-3)=8

Answer:

the first question y=-6

the second question

y=1/2

Step-by-step explanation:

y=(3x2)

y=-6

the second question x+3x=2

4x=2

y=1/2

Answer:

2800 miles and the rate of speed is 200mph

Step-by-step explanation:

Answer:

Time taken to cool your room (in hours) = (volume of your room* density of air* change in temperature you want * specific heat of air)/ (latent heat of fusion * ton capacity of your AC*1000 / 24).

Answer:

EF is 11

Step-by-step explanation:

3x-4=x+6

2x=10

X=5

5+6=11

Answer: EF = 16

Step-by-step explanation:

Formula -  EF = 1/2(AB +DC)

x +6+1/2((2x-9)+(x+5))

x=16

Answer:

It is a linear equation

solving by substitution method

x + y =6 ------ eqn 1

2x + 4y =20 -------- eqn 2

x = 6 - y ------ eqn 3

putting the value of x from eqn 3. into eqn 2.

2(6-y) +4y =20

12 - 2y + 4y =20

12 +2y =20

2y = 20-12

2y = 8

2y / 2 =8/2

y =4

put the value of y into eqn 3

x =6 - y

x = 6 - 4

x = 2

Therefore x = 2, y= 4

Answer:

12 miles.

Step-by-step explanation:

The equation for this problem would be 0.65x+1.75

Now, we just plug in the x (miles) in the equation until we get y less or equal to 10. I'm going to start at 5 as an estimate.

0.65(5) + 1.75 = $5

0.65(10) + 1.75 = $8.25

0.65(12) + 1.75 = $9.55

If you cannot have a decimal mile in your answer, Kim can ride 12 miles.  

12.6923 miles is the closest you can get with $10 in a decimal answer.

730

bought at x

x + 50 - 20 = 760

x = 760 - 30 = 730

Answer: 258

Step-by-step explanation:

add the two numbers and you get 407.1212. Subtract that from the solution and you get 85!!

Answer:

A i think

Step-by-step explanation:

Answer:

Step-by-step explanation:

5 : 2 = x : 3

x = 3 * 5 : 2

x = 7.5

Answer:

9x3

Step-by-step explanation:

9 is three times greater than 3

9*3=27

Answer:

[tex]a_n=19+(n-1)(-5)[/tex]

Step-by-step explanation:

The explicit formula for an arithmetic sequence is [tex]a_n=a_1+(n-1)d[/tex] where [tex]a_n[/tex] is the [tex]n[/tex]th term and [tex]d[/tex] is the common difference.

In this problem, we can see that the first term of the sequence is [tex]a_1=19[/tex] and the common difference is [tex]d=-5[/tex] since 5 is being subtracted each consecutive term.

Therefore, the explicit formula that describes the given arithmetic sequence is [tex]a_n=19+(n-1)(-5)[/tex]

Answer:

option 2

Step-by-step explanation:

Let { a1, a2, a3, a4, ... } be the sequence.

now the 1st term (a1) will have a value when n = 1.

similarly, all the other terms will have the values given when we substitute their respective n values into the explicit formula or fibonacci sequence.

thus, check if the 1st term is 19 by using option 2

an = 19 + (n-1)(-5)

an = 19 + (n-1)(-5) ....n = 1

an = 19 + (n-1)(-5) ....n = 1 a1 = 19 + (1-1)(-5) = 19 + 0 = 19. so it's accurate so far.

next, check a2 where n = 2.

a2 = 19 + (2-1)(-5) = 19 - 5 = 14. ....

n = 3

a3 = 19 + (3-1)(-5) = 19 - 10 = 9.

hence the conclusion from this pattern.

Answer:

p=8

n=3

Step-by-step explanation:

let number of pennies=p

number of nickels=n

p+n=11

n=11-p

1*p+5*n=23

p+5(11-p)=23

p+55-5p=23

55-4p=23

4p=55-23=32

p=32/4=8

n=11-8=3

Answer:

im guessing you're trying to find where the lines will meet at, so the lines will meet at (1,-1)

Step-by-step explanation:

sadly it doesnt allow me to add in a photo but ill tell you a good enough explanation of what to draw, for y=3x+2 your line starts at 2 on the y axis and goes down (-3/1)

for y=3x-4 your line starts at -4 and go up by 3/1

hope this helped, not sure if you need anything more.

Answer:

i need to see shape

Step-by-step explanation:

Answer:

8 pounds - $64

9 pounds - $72

12 pounds - $96

Step-by-step explanation:

To find how much money she spends you multiply the number of pounds by the price per pound ($8).

Hope this helps :)

Answer:

x/3+12=18 x/3=6 x=18 This is 100%

Answer:

4 times 3 is 12. Therefore, 4 pounds of jelly beans cost $12.

Step-by-step explanation:

yes it is

Step-by-step explanation:

8(3/4)-3>2

24/4-3>2

6-3>2

3>2

Scale factor is the ratio of representation measurement of the figure to the original figures.

The actual distance between these two exhibits is 125 feet. Thus the option 2 is the correct option.

Scale factor is the factor which is used to enlarge or smaller the original figure.

Scale factor is the ratio of representation measurement of the figure to the original figures.

Given information-

The distance between the two water fountains is 10 inches on the scale drawing of the museum.

The actual distance between the two water fountains is 400 inches.

The distance between two exhibits is 3.125 inches on the same scale drawing of the museum.

The scale factor of the distance of water museum in the drawing to the actual distance is,

[tex]r=\dfrac{10}{400} \\r=\dfrac{1}{40}[/tex]

Thus the scale factor  of the distance of water museum in the drawing to the actual distance is 1/40.

As the the distance between two exhibits is measured on the same scale of drawing. Thus the scale factor in this case also be same.

Let the  actual distance between these two exhibits is x feet. Thus,

[tex]\dfrac{1}{40} =\dfrac{3.125}{x}\\x=125\rm ft[/tex]

Hence, the actual distance between these two exhibits is 125 feet. Thus the option 2 is the correct option.

Learn more about the scale factor here;

https://brainly.com/question/10253650

Answer:

1,461 days is in 4 years

Step-by-step explanation:

Answer there's 1,461 days in 4 years

Step-by-step explanation:

Answer:

Step-by-step explanation:

2 ways:

Solve 1st way:

Solve 2nd way:

Your answer is 1,090 or 1.09k.

Answer:

1024

Step-by-step explanation:

234x2+245x2+33x2=1024

[Did this question on prodigy]

Answer:

Reflecting a function over any axis can be complicated if you do not know the proper way to do it, so I am going to use examples to show you.

If f(x)=x is your normal function, then flipping it across the y-axis would look like f(x)=-x.

Step-by-step explanation:

Placing a - sign before the X will make it flip across the y-axis. After the X, and it flips across the X-axis.

Answer:

No

Step-by-step explanation:

Because the watch is selling for 75% off, the discounted price will be

[tex]100(1-75\%)\\=100*0.25\\=25[/tex]($)

Then, when you apply your coupon, the new cost will be

[tex]25(1-25\%)\\=25*0.75\\=18.75[/tex]($)

So you'll still pay $18.75.