m2-n2 factorization plz

Step-by-step explanation:

(k + 3) - (3k - 5) = k + 3 - 3k + 5       [expand the brack and simplify like terms]

                         = -2k + 8

Answer:

46.15%

Step-by-step explanation:

# of girls + # of boys = total # of students

12+14=26

# of girls / total # of students = percentage of girls in the class

12÷26=0.461538

Move the decimal place over two spots or multiply by 100 for the percent

46.1538%

Round up if needed, in this case I rounded up to the hundredths place.

Answer:

function : 2 and 3

Step-by-step explanation:

a function cant have any overlapping points on the x axis, if you can draw a line up and down (vertical) and it hits two points then it isn’t a function

Answer:

f(-1) = 2

f(0) = 3

Step-by-step explanation:

f(a) = 3a - a²

f(4)= 3*4-4²= -4 ⇒ correct

f(3)= 3*3-3²= 0 ⇒ correct

f(-1) = 3*(-1)-(-1)²=-3+1= -2 ⇒ incorrect

f(0) = 3*0-0²= 0 ⇒ incorrect

f(-5) = 3*(-5)-(-5)²= -15-25= -40 ⇒ correct

Answer:

5x-15=3x+5

5x-3x=5+15

2x=20

x=20/2

x=10

Step-by-step explanation:

Answer:

x = 10

Step-by-step explanation:

Hello!

Let's distribute the parenthesis

Solve:

Now, we can rearrange the variable so that x is on one side and the numbers are on the other.

We can isolate x by dividing by the coefficient of x (2).

The value of x is 10.

Answer:

hope this helps :)

Step-by-step explanation:

20−3x=5

Subtract 20 from both sides.

20-3x-20=5-20

⇒-3x=-15

divide both sides by 3

⇒-3x/-3=-15/-3

⇒x=5

Answer:

[tex] \sf \: d) \: x = 5[/tex]

Step-by-step explanation:

Now we have to,

→ Find the required value of x.

The equation is,

→ 20 - 3x = 5

Then the value of x will be,

→ 20 - 3x = 5

→ -3x = 5 - 20

→ -3x = -15

→ 3x = 15

→ x = 15 ÷ 3

→ [ x = 5 ]

Hence, the value of x is 5.

Answer:B, C and E

Step-by-step explanation:

0.8 = 8 tenths

0.03 = 3 one hundredths

80/100 is the same as 8/10 or 8 tenths

3/100 is also 3 hundredths

This can be expressed by 8/10 and 3/100

Answer:

e, c, b

Step-by-step explanation:

for more info, check the picks, if this helped, please mark as brainliest

Answer:

Step-by-step explanation:

1 - 4 are in the attached image. Use a spreadsheet for quick calculations.

5. Opens up. Vertex is (0,1) Symmetry around y axis.

6. Opens down. Vertex is (0,-4) Symmetry is around y axis

7. Opens up. Vertex is (1,-1) Symmetry around y axis

8. Opens up. Vertex is (-1,0) Sym. around y axis

9. Opens up. Vertex is (1,1) Sym. around y axis

10. Opens down. Vertex is (1.25, 0.125) Sym around y axis

Answer:

(-3x²+5x-2)-2(x²-2x-1)

-3x²+5x-2-2x²+2x+2

-5x²+7x

b = 7

Answer:

(-3x²+5x-2)-2(x²-2x-1)

-3x²+5x-2-2x²+2x+2

-5x²+7x

b = 7

Step-by-step explanation:

Answer:

Step-by-step explanation:

Part A:

For Dog walking, he earns $30 for 5 hours of work.

He earns $36 for 6 hours of work.

$30/5 hours = $6/hour

$36/6 hours = $6/hour

He earns $6/hour dog walking.

For 8 hours, he earns 8 hours * $6/hour = $48

To earn $66, he works 66/6 = 11 hours.

5 30

6 36

8 48

11 66

Part B:

He earns $7/hour for yard work, so multiply the number of hours by 7 to find the money he earns.

Table for yard work

Hours     Money

5             $35

6             $42

8             $56

Part C:

For 5 hours, he earns $35 for yard work and $30 as a dog walker.

$35 - $30 = $5

Answer:

x. /. Y.

0. /. 1.

1. /. 3.

2. /. 5.

3. /. 7.

Step-by-step explanation:

Answer:

67°

Step-by-step explanation:

1. The final angle in the top triangle is : 70

The angles in a triangle add up to 180° so 74 + 36 = 110 and 180 - 110 = 70

2. Vertically opposite angles are equal so the angle opposite the one we just found is 70° as well

3. The angles in a triangle add up to 180° so 70 + 43 = 113 and 180 - 110 = 67

Therefore, ? = 67°

Answer:

x = 15; I hope this is right

24 divided by 16 = 1.5

10 times 1.5 = 15

Answer:

0.35

Step-by-step explanation:

100cm = 1m

1cm = 0.01m

35cm = 0.35m

Answer: Creo que es correcto

Step-by-step explanation: Porque si realmente lo piensas, probablemente lo entenderías, así que sí, y espero haberte ayudado.

80,70,58 I think let me know if it is wrong

Part A

Refer to the diagram below. Specifically, refer to figure 1.

Point P is added to form a right triangle.

J is at (-7,2) and P is at (11,2). Segment JP is 18 units long.

We split segment JP into 4 equal pieces to get 18/4 = 4.5; this result is added onto the x coordinate of J to get -7+4.5 = -2.5 which is the x coordinate of point Q. So Q is at (-2.5, 2)

The value -2.5 is the x coordinate of point S as well.

Notice how the ratio JQ:QP is equal to 1:3.

----------

The distance from P to H is 6 units, which divided into four pieces means 6/4 = 1.5 is added onto the y coordinate of P to get 2+1.5 = 3.5; this is the y coordinate of points R and S as the diagram indicates. Like in the previous section, the ratio PR:RH is equal to 1:3

So ultimately point S is located at (-2.5, 3.5)

If we used the distance formula to compute the lengths of segments JS and SH, then we should find that they are in the ratio 1:3. In other words, segment SH is 3 times longer compared to segment JS. This would help confirm the answer. I'll let you do this confirmation part.

============================================================

Part B

Refer to figure 2 this time.

We'll have a similar thing going on here as done in part A, though the points Q and R are in different locations.

To find where Q must be, we take 5/6 of the distance from J to P (which we found was 18 units). So (5/6)*18 = 15. This 15 is added onto the x coordinate of J to get -7+15 = 8. This is the x coordinate of point Q and point T.

Similarly, (5/6)*(length of segment PH) = (5/6)*6 = 5 is added onto the y coordinate of P to form the point R(11,7). The y coordinate of this helps form the y coordinate of the point T.

In short, point T is located at (8,7)

You should find that JS/SH is equal to 5/6 when you apply the distance formula to compute the lengths of JS and SH. I'll let you do this confirmation.

Answer:

$263.50

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

6210

Step-by-step explanation:

Answer:

Answer is in the picture. hope it helps.

Answer:

Step-by-step explanation:

*the x is substitued by the given number

*you don't need to put it next to "x"

for example, you put y=1/3x(-9)+2

but it is y=1/3(-9)+2

and the answer is -1

I hope my explanation can help you

1. -1

2. 1

3. 2

4. 4

5. 6

7. 9

Step-by-step explanation:

9/9 (total no. of students) - 2/9 (women)

=7/9 (male)

= 7:9

Answer:

answer in Step by step

Step-by-step explanation:

first row

4+3=7

-1+1=0

4+-3=1

second row

1+3=4

1+-1=0

-3+1=-2

thrid row

-2+3=1

-2+-1=-3

-2+-3=-5

Using the mean concept, it is found that the lowest possible average temperature on Wednesday, in degrees Fahrenheit, is of 72.

The mean of a data-set is given by the sum of all observations in the data-set divided by the number of observations.

In this problem, there are 3 observations, given by: 62, 58 and x.

The mean is of at least 64, hence:

[tex]\frac{62 + 58 + x}{3} \geq 64[/tex]

[tex]120 + x \geq 192[/tex]

[tex]x \geq 72[/tex]

The lowest possible average temperature on Wednesday, in degrees Fahrenheit, is of 72.

More can be learned about the mean concept at https://brainly.com/question/24628525

Answer:

a) m + 1000

b) m/2

c) 2(m + 1000)

Step-by-step explanation:

Amount earned by Bernie per day = Php 1000

Amount earned by Mitch on a given day = m

a) Expression of combined amount of earnings = m + 1000

b) Amount earned by Eugene on a given day = m/2

c) Amount earned by Rowan = 2(m + 1000)

#4M1735H

Answer:

3

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

youre correct its m=4

Step-by-step explanation:

got it correct!

Answer:

B, g(n) = 50*1.15^n

Step-by-step explanation:

It's a geometric sequence because the money is increasing by a percentage every year.

Answer:

60

Step-by-step explanation:

f(6) = 60