Helppppp please please
Please please

Answer:

Step-by-step explanation:

f(2) = -2 means that one of the coordinates of this line is (2,-2)

f(1) = 1 means that another coordinate of this line is (1, 1)

This is because the general notation is f(x) = y

Now we use the equation y = mx + b, where we can find the slope, m, and then plug in one of the points to solve for the y-intercept, b

m = y2 - y1 / x2 - x1

m = 1 - (-2) / 1 - 2

m = -3

Arbitrarily choose one of the two coordinates to plug in to find the y-intercept. I chose (1,1) here:

1 = -3(1) + b

b = 4

Therefore, the linear function is y = -3x + 4, or f(x) = -3x + 4

Answer:

D. (4,1)

Step-by-step explanation:

I took the test

Answer:

84

Step-by-step explanation:

The 4 part of the ratio relates to 48 girls, then

48 ÷ 4 = 12 ← value of 1 part of the ratio , then

3 parts = 3 × 12 = 36 ← number of boys

total number of students = 48 + 36 = 84

Answer:

he

Step-by-step explanation:

he

       SAS - We have two sides (the small lines indicate this) and the angles across from each other (vertical angles) are congruent. This means the triangles are proven congruent by the SAS Congruence Postulate.

       Knowing this, we can say that AAS and ASA also apply, but as it is not known until we have SAS, I believe SAS is the only "correct" answer.

(HL does not apply here as we do not have right-triangles)

Have a nice day! :)

Answer:

y-5-2x quad y-5-2x

Step-by-step explanation:

y-5-2x

Answer:

not reasonable, half of a room per day, and 2 rooms, I hope this helps:)

Answer:

Step-by-step explanation:

ICUP IN A CUP LICK IT AI

Answer:

Step-by-step explanation:

The general equation of any line is y = mx + b

m = slope

b = y intercept

m = - 4

b = - 1

he equation y = -4x - 1 has a slope of ___-4_______

and a y-intercept of _______-1________

Answer:

The answer is 20 pounds.

Step-by-step explanation:

Let p represent the number of pounds.

UPS charges $7 for the first pound, and $0.20 for each additional pound.

7 + 0.20p

FedEx charges $5 for the first pound and $0.30 for each additional pound.

5 + 0.30p

To know the number of pounds it will take for UPS and FedEx to cost the same, we will equal both the equations.

7 + 0.20p = 5 + 0.30p

7 - 5 = 0.30p - 0.20p

2 = 0.10p

p = 20

Hence, it will take 20 pounds to make both equal.

Answer:

A

Step-by-step explanation:

The first thing you need to do is find the slope. Find two perfect points.

In this case I chose (0,0) and (4,1). Slope is basically rise over run. In other words, how much you go up, and how much you go right. We rise up one and to the right 4.

Answer:

√4 = 2

Because 2 × 2 = 4

If you want to get square root of any number find the number which you can multiply two times to give you that certain number

Answer: 1 1/3

Step-by-step explanation:

1/9×3^3 - 2(1/6 + 2/3) = 4/

3

= 1 1/

3

≅ 1.3

Answer:

4/3

Step-by-step explanation:

1/8(3³)- 2(1/6+2/3)

Answer:

x = 68 degrees

Step-by-step explanation:

This is an isosceles triangle:  two of the legs are of equal length.  Therefore the measures of the angles opposite these sides are also equal.  If one is 68 degrees, then the other must also be 68 degrees.

Answer:

  8.3 -8.7n

Step-by-step explanation:

Maybe you want to simplify this expression.

First of all, recognize it is a sum of four terms. We use "sum" in the general sense, where the things being added can be positive or negative.

  3.3

  -5.7n

  -3n

  5

Two of these terms are regular decimal numbers: 3.3 and 5. They can be added together without any fuss: 3.3 +5 = 8.3.

The other two terms are products. One of the factors of the product is a constant, called the "coefficient" of the term. The other factor is the letter n, called a "variable".

You may recall that multiplication is a way to write repeated addition:

  3×6 = 6 +6 +6

The factor 3 in this example tells you how many times 6 is included in the sum. We can combine such sums:

  (3×6) + (2×6) = (6 +6 +6) +(6 +6) = (3+2)×6 = 5×6

If you replace 6 with n, the same thing is true:

  3n +2n = (3+2)n = 5n

That is, we can combine terms containing n by adding their coefficients.

__

Your simplification problem then can be written as ...

  3.3 -5.7n -3n +5

  = (3.3 +5) +(-5.7n -3n) . . . . . . "like" terms are grouped together

  = 8.3 +(-5.7-3)n

  = 8.3 -8.7n

Answer:

The total cost of the skateboard is 75.58881, rounded, it's $75.59.

Step-by-step explanation:

Since the merchandise is discounted by 12%, this means there's a decrease in price.

We need to convert our discount to a decimal, 0.12, and then multiply it by the original price. So,

$79.35 × 0.12 = 9.522

Then we subtract: $79.35 - 9.522 = 69.828

Since we have to pay a sales tax of 8.25%, we need to convert that into a decimal, 0.0825, and then multiply the sales tax by 69.828. So,

69.828 × 0.0825 = 5.76081

Now we add 5.76081 to our price, 69.828, which is 75.58881.  75.58881 rounded to the nearest hundredth is 75.59.

Answer:

90

Step-by-step explanation:

45x2=90

Step-by-step explanation:

Given line:

We are looking for a parallel and a perpendicular line to the given with a y-intercept of 6.

a)

Parallel lines have equal slopes:

b)

Perpendicular lines have negative-reciprocal slopes:

Answer:

Yes they are equivalent.

Step-by-step explanation:

Find the least common denominator or LCM of the two denominators:

LCM of 4 and 20 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20

For the 1st fraction, since 4 × 5 = 20,

3

4

=

3 × 5

4 × 5

=

15

20

Likewise, for the 2nd fraction, since 20 × 1 = 20,

15

20

=

15 × 1

20 × 1

=

15

20

Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction

15

20

=

15

20

or

3

4

=

15

20

Yes, we can say that the ratio 15 : 20 and 3 : 4 are equivalent.

The ratio is the number that can be used to express one quantity as a fraction of the other ones. The two numbers in a ratio can only be compared when they have the same unit.

Equivalent ratios are the ratios that are the same when we compare them.

Therefore, for ratios of 15 : 20 and 3 : 4, for them to be equivalent, they must have thesame value.

15 : 20 = 15/20

divide through by 5

= 3/4 = 3 :4

Therefore , we can say that ratios 15 : 20 and 3 : 4 are equivalent.

learn more about ratios from

https://brainly.com/question/12024093

#SPJ3

Answer:

$20.25

Step-by-step explanation:

8*1.75=x

x=14

5*1.25= y

y=6.25

x+y=20.25

Answer and step-by-step explanation:

Put 25 at the top

Put 3 at the left

Put ? in the middle

Answer:

9

Step-by-step explanation:

Granny has 25 apples but only 3 can fit into a basket  if there were 8 baskets you can put 3 into each basket. This would be 8x3 which equals 24 apples. But Granny would have 1 apple left over so you would need another basket. Therfore in total you would need 9 baskets

Answer:

3/5 = 60%

Step-by-step explanation:

3/5 x 100 = 3 x 20 = 60%

Hoped this helped.

Divide 3 by 5 then multiply by 100:

3 / 5 = 0.6

0.6 x 100 = 60%

Answer 60%

Answer:

4[tex]\sqrt{3}[/tex]

Step-by-step explanation:

AB = [tex]\sqrt{[(4-(-4)]^{2} - [1-(-3)]^{2} }[/tex] = 4[tex]\sqrt{3}[/tex]

Answer:

The surface area of the new cone is 240π inches² ⇒ answer D

Step-by-step explanation:

If the two cones are similar, then:

1. t1/t2=l1/l2=constant ratio

2. S.A1/S.A2=(R1/R2)^2

3. V1/V2=(R1/R2)3

The surface area of a right circular cone is 15π inches²

 The cone is enlarged by multiplying both the radius of the base  and the slant height by 4

 The two cons are similar

R1/R2=1/4

 The surface area of a right circular cone is 15π inches²

S.A1/S.A2=(R1/R2)^2

SO

15π/S.A2=(1/4)^2

15π/S.A2=1/16

By using cross multiplication:

15πX16=S.A2X1

240π=S.A2

The surface area of the enlarged cone = 240π inches²

The surface area of the new cone is 240π inches²

HOPE THAT HELPS!!

Answer:

Options B and C

Step-by-step explanation:

The point-slope form of linear equations is y - y₁  = m(x - x₁) where: m = slope, and (x₁, y₁) represents a point on the line.

In reference to the definitions provided regarding the point-slope form: Given the linear equation, y - 10 = 60(x - 40):

The slope, m = 60, and one of the points (x₁, y₁) is represented by (10, 40).

Therefore, the correct answers are: Options B and C.    

Transformation involves changing the size and position of a shape.

The coordinates of P'Q'R' follows the transformation rule [tex]\mathbf{(x,y) \to (0.5x-3,0.5y+1)}[/tex]

First PQR is dilated by 0.5.

The transformation rule of this dilation is:

[tex]\mathbf{(x,y) \to 0.5(x,y)}[/tex]

This gives

[tex]\mathbf{(x,y) \to (0.5x,0.5y)}[/tex]

Next, the points are translated 1 unit up and 3 units right.

The transformation rule of this translation is:

[tex]\mathbf{(x,y) \to (x-3,y+1)}[/tex]

So, we have:

[tex]\mathbf{(x,y) \to (0.5x-3,0.5y+1)}[/tex]

Hence, the coordinates of P'Q'R' follows the transformation rule [tex]\mathbf{(x,y) \to (0.5x-3,0.5y+1)}[/tex]

Read more about transformation at:

https://brainly.com/question/11707700

Answer:

y = -x + 2

Step-by-step explanation:

(-3,5) and (4,-2)

Slope: (-2-5)/(4 - - 3) = -7/7 = -1

y-intercept= -2 - (-1)(4) = -2 + 4 = 2

Answer:

5

Step-by-step explanation:

does not equals it differs

Answer:

solution,

R={(6,-1),(-2,2),(18,-1),(-2,3)}

domain={6,-2,18}

range={-1,2,3}

domain:range is the relation a function…

Note:-

Solution:-

[tex]\\ \sf\longmapsto D_f=\{6,-2,18\}[/tex]

[tex]\\ \sf\longmapsto R_f=\{-1,2,3\}[/tex]

No it's a relation not function