what is y-2=-3 (x-7) in standard form

A.y-2=--3x+21
B.y=-3x+23
C.3x+y-23=0
D.3x+y=23​

Answer:

9, -8, 15

Step-by-step explanation:

Equation 1

[tex]5(x+7)-3(x-4)=7x+2 \\ \\ 5x+35-3x+12=7x+2 \\ \\ 2x+47=7x+2 \\ \\ 47=5x+2 \\ \\ 45=5x \\ \\ x=9[/tex]

Equation 2

[tex]4(3x+5)-3=9x-7 \\ \\ 12x+20-3=9x-7 \\ \\ 12x+17=9x-7 \\ \\ 3x+17=-7 \\ \\ 3x=-24 \\ \\ x=-8[/tex]

Equation 3

[tex]\frac{1}{3}(5x-9)=2\left(\frac{1}{3}x+6 \right) \\ \\ 5x-9=2(x+18) \\ \\ 5x-9=2x+36 \\ \\ 3x-9=36 \\ \\ 3x=45 \\ \\ x=15[/tex]

Answer:

a)1 cup of flour

b)67.5 minutes

Step-by-step explanation:

a) A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls?

From the above question, we know that:

27 dinner rolls = 3 cups of flour

9 dinner rolls = x

Cross Multiply

27 rolls × x = 9 rolls × 3 cups

x = 9 rolls × 3 cups/27 rolls

x = 1 cup of flour

Hence, 1 cup of flour is needed to make 9 dinner rolls

b) Mandy runs 4 km in 18 min. She plans to run in a 15 km race. How long will it take her to complete the race?

From the above question:

4 km = 18 minutes

15km = x

Cross Multiply

4km × x = 15km × 18 minutes

x = 15km × 18minutes/4km

x = 67.5 minutes

Hence, in a 15km race , it would take her 67.5 minutes to complete her race.

Answer:

1/4 !

Step-by-step explanation:

Answer:

39 + 2x

Step-by-step explanation:

Answer:

61/84

Step-by-step explanation:

i just finished doing that problem

Answer: 61/84

Step-by-step explanation:

82

84

−

3

12

=

82

84

+

−3

12

=

41

42

+

−1

4

=

82

84

+

−21

84

=

82+−21

84

=

61

84

Answer:

A). Scale factor = [tex]\frac{1}{4}[/tex]

B). Length of the unknown side = 2.75 feet

Step-by-step explanation:

Part A

Since, the large rectangle was scaled by a scale factor 'k' to form the smaller rectangle,

Scale factor = [tex]\frac{\text{Side length of the image}}{\text{Side length of the preimage}}[/tex]

                    = [tex]\frac{\text{Side length of the smaller rectangle}}{\text{Side length of the larger rectangle}}[/tex]

                    = [tex]\frac{4}{16}[/tex]

                    = [tex]\frac{1}{4}[/tex]

Part B

Scale factor = [tex]\frac{\text{Side length of the smaller rectangle}}{\text{Side length of the larger rectangle}}[/tex]

[tex]\frac{1}{4}=\frac{\text{Side length of the smaller rectangle}}{11}[/tex]

Therefore, side length of the unknown side = [tex]\frac{11}{4}[/tex] = 2.75 feet

Answer:

The second one.

Step-by-step explanation:

It's not a right triangle.

Answer:

The second triangle

Step-by-step explanation:

The reason is that is doesn't have a 90 degree angle

All the other triangles are right angled triangle except for the second one

Answer:

4232

Step-by-step explanation:

92% x 4600

4232

Answer:

C

Step-by-step explanation:

Edge2021

Answer:

Step-by-step explanation:

S  50 m = 0.050 km

A  ∵ 1 m = 100 cm

    ∴ 5 m = 500 cm

K  ∵ 1000 dm = 0.1 km

    ∴ 1 dm = [tex]\frac{0.1}{1000}[/tex] km

    ∴ 5246 dm = [tex]\frac{0.1}{1000}\times 5246[/tex] km

                        = 0.5246 km

P ∵ 1 m = 1000 mm

  ∴ 5.246 m = 5246 mm

P ∵ 1 hg = 1000 dg

   ∴ 3.7 hg = 3700 dg

U  ∵ 1 g = 100 cg

   ∴ 0.37 g = 37 cg

E  ∵ 1 kg = 1000 g

   ∴ 370 kg = 370,000 g

9514 1404 393

Answer:

  x = 78

Step-by-step explanation:

The base angles of an isosceles triangle are congruent, so the sum of angles is ...

  x° +x° +24° = 180°

  2x +24 = 180 . . . . . collect terms

  x + 12 = 90 . . . . . . . divide by 2

  x = 90 -12 . . . . . . . . subtract 12

  x = 78

_____

Additional comment

The base angle of an isosceles triangle is always the complement of half the third angle. That angle's bisector is an altitude, so divides the isosceles triangle into two congruent right triangles.

Answer:

y = 8

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

What the question is asking is for the y-value when the x-value is equal. According to the graph, when x = 6, y = 8. Therefore, y = 8.

Answer:

8

Step-by-step explanation:

I got it correct and it is on khan :) I can prove it :D

Answer:

2). 2

3). 5

4). 3

5). 6

Step-by-step explanation:

Answer:

A, B & D

Step-by-step explanation:

Because if you subtract one of the constants from both sides then you should only have equal variables. In other words, both sides have to be identical in this situation.

33x-33= 33x + 25

33x = 33x + 58 No matter what you make x, the right will be 58 bigger than the right so there is no solution.

33x+33=33x+25

33x+8= 33x nope no solution

33x+25=33x+25

33x = 33x both sides identical so there is a solution

33x-25 = 33x +25

33x= 33x+50

Answer:

94

Step By Step Explanation:

6X8=48

5X7=35

1X3=3

2X4=8

48+35+3+8= 94

48+35=83

3+8=11

83+11=94

94

Step-by-step explanation:

given

a = - 3

3a² = 3 * ( -3) ²

= 3 * 9

= 27

The value of 3a² is 27.

Answer:

Energy used, input

Monthly bill, output

Step-by-step explanation:

the bill is affected by how much energy u use

HOPE THIS HELPS!

Brainliest?

Answer:

16/15

Step-by-step explanation:

I hope this is helpfull

Answer:

(x²-16x)

Step-by-step explanation:

thats all just multiply then

Answer:

-32 - 72h ...............

Answer: -32 - 72h

Step-by-step explanation:

so, i am not sure if this is 100% correct, but it should be if i read the problem correctly.

first, i multiplied the parentheses by 8.

-8 x 4 - 8 x 9h

then, i multiplied and calculated it.

-32 - 72h

Step-by-step explanation:

a=90

e=45

f=45

plzzzz mark me brainliest if it helps you then

Answer:

Five is as 2 x5=10, but it doest come in the table of 2

Step-by-step explanation:

Step-by-step explanation:

f(n) = 3n + 19

When n = 32, f(32) = 3(32) + 19 = 96 + 19 = 115.

The 32nd term of the AP is 115.

Answer:

[tex]\displaystyle y=-\frac{2}{3}x+3[/tex]

Step-by-step explanation:

We want to find the equation of the line that is parallel to:

[tex]\displaystyle y=-\frac{2}{3}x[/tex]

And passes through (-3,5).

First, we need to determine the slope of our new line.

Remember that parallel lines have the same slope.

Since the slope of our original line is -2/3, this means that the slope of our new line must also be -2/3.

Now, we can use the point-slope form given by:

[tex]y-y_1=m(x-x_1)[/tex]

We will let (-3, 5) be (x₁, y₁). By substitution:

[tex]\displaystyle y-(5)=-\frac{2}{3}(x-(-3))[/tex]

Simplify:

[tex]\displaystyle y-5=-\frac{2}{3}(x+3)[/tex]

Distribute:

[tex]\displaystyle y-5=-\frac{2}{3}x-2[/tex]

Add 5 to both sides. So, our equation is:

[tex]\displaystyle y=-\frac{2}{3}x+3[/tex]

Answer:

[tex]\displaystyle y = -\frac{2}{3}x + 3[/tex]

Step-by-step explanation:

5 = –⅔[–3] + b

2

[tex]\displaystyle 3 = b \\ \\ y = -\frac{2}{3}x + 3[/tex]

Parallel equations have SIMILAR RATE OF CHANGES [SLOPES], so –⅔ remains as is.

I am joyous to assist you at any time.

Answer:

you would move left once, then left again 6 times. so 7 times to the left.

Step-by-step explanation:

You're moving left because you're working with negative numbers, so -1 would be the first step, and then just move 6 times more to the left. When you work with positives you do the same but to the right.

You will have to move left by 6 units.

Given is a number line.

The given expression is -

-1 + (-6)

on solving, we get -

- 1 - 6

- 7

You will have to move left by 6 units.

Therefore, you will have to move left by 6 units.

To solve more questions on equations, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ2

Answer:

9 and -10 are constant

Step-by-step explanation:

constant means it shouldnt have any variable attached to it

Answer:

3,6,18,9,10

Step-by-step explanation:

numbers

Answer:

N

Step-by-step explanation:

I hope this helps!!