13x -7 =12 (x - 1) + x + 5
is this no solution, infinite, or no solution

Answer:the answer is 31

Step-by-step explanation:

We are looking for a new number which is 25 less than 56.

We will get the new number by subtracting 25 from 56.

We write it down as:

56-25=31

And finally the solution for: What number is 25 less than 56?

is 31

Answer:

y=3x-4

Step-by-step explanation:

a slope of 3 means that the equation will definitely start like this

y=3x +/- b

to find b, substitute the coordinates given, so

5=3 x 3 +/- b

5=9 +/- b

5-9=b

-4=b

so the equation would be

y=3x-4

Given:

The system of equations is

[tex]3x-2y=7[/tex]

[tex]6x-4y=14[/tex]

To find:

The correct statement for the given system of equations.

Solution:

On comparing the given equations and general form of linear equation, i.e., [tex]ax+by+c=0[/tex], we get

[tex]a_1=3,b_1=-2,c_1=-7[/tex]

[tex]a_2=6,b_2=-4,c_2=-14[/tex]

Here,

[tex]\dfrac{a_1}{a_2}=\dfrac{3}{6}=\dfrac{1}{2}[/tex]

[tex]\dfrac{b_1}{b_2}=\dfrac{-2}{-4}=\dfrac{1}{2}[/tex]

[tex]\dfrac{c_1}{c_2}=\dfrac{-7}{-14}=\dfrac{1}{2}[/tex]

Since, [tex]\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}[/tex], therefore, the two equations are equivalent and the system has infinitely many solutions.

Hence, the correct option is b.

Answer:

1) (x - 9)(x + 2)  ==> trinomials

2) (s + z) (3m - 2n)  ==> factorising by parts

3) (x + 2)(5x + 3)  ==> factorising with a leading coefficient

4) 9y²(3y² - 2)  ==> GCF

5) (4m - 12)(4m + 12)  ==> DoPS

Step-by-step explanation:

1). Find multiples of -18 that add up to -7

Multiples of -18 : (only one number can be negative, because positive*negative = negative)

1, 18 or 3, 6 or 2, 9

Only one pair adds up to -7 which is -9 + 2

Hence ==> (x - 9)(x + 2)

2). Find the common things between the terms and factorise it out  

3m(s + z) - 2n(s + z)

Since the terms inside the brackets are the same, you simplify it to:

(s + z) (3m - 2n)

3). Multiply the first coefficient with the last coefficient: 5(6) = 30

Find two numbers that multiply to 30 and add up to the middle coefficient -13.

Multiples of 30 are: 1, 30 or 2, 15 or 3, 10 or 5,6, but only one pair would add to -13 and that is 3 and 10

So the next step is to write it in this form: 5x² + 10x + 3x + 6

Factorise: 5x(x + 2) + 3(x + 2)

(x + 2)(5x + 3)

4). Find the greatest common factor within 27y⁴ and 18y², which is 9y²

9y²(3y² - 2)

5). Square root each number: √16 = 4 and √144 = 12

(4m - 12)(4m + 12)

Answer:

maybe the attached image is helpful

Answer:

30 and 10

Step-by-step explanation:

Given ratio of age = 3 : 1 = 3x : x ( x is a multiplier )

Six years ago their age ratio was

3x - 6 : x - 6 = 6 : 1 ← express in fractional form

[tex]\frac{3x-6}{x-6}[/tex] = [tex]\frac{6}{1}[/tex] ( cross- multiply )

6(x - 6) =3 x - 6

6x - 36 = 3x - 6 ( subtract 3x from both sides )

3x - 36 = - 6 ( add 36 to both sides )

3x = 30 ( divide both sides by 3 )

x = 10

Thus their present ages are

mother = 3x = 3 × 10 = 30

daughter = x = 10

Answer:

60 ft

Step-by-step explanation:

120 = x + 2x + 3x

120 = 6x

x = 20

Answer:

(x + y)² = 35

Step-by-step explanation:

The expansion of

(x + y)² = x² + 2xy + y²

           = x² + y² + 2xy ← substitute given values

          = 25 + 2(5)

           = 25 + 10

           = 35

Answer:

35

Step-by-step explanation:

[tex]xy = 5 \\ \\ {x}^{2} + {y}^{2} = 25 \\ \\ \because \: {(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy\\ \\ \therefore {(x + y)}^{2} = 25 + 2 \times 5 \\ \\ \therefore {(x + y)}^{2} = 25 + 10 \\ \\ \huge \red{ \boxed{\therefore {(x + y)}^{2} = 35}}[/tex]

Answer:

Okay so what you are dealing with here is scatter plots and I can tell by looking at this graph that it shows a negative correlation because the dots are decreasing or going down as values are increasing...... I know it's negative so I think the answer would be negative strong linear. I hope this helps you and is correct. Have a great day and good luck!

Step-by-step explanation:

Answer:

B.)

Step-by-step explanation:

A rational number is a number with no repeating decimals or decimals that go on “forever” like pi.  An expample of a rational number is 2 where 2.3333333... is not a rational number.  Pi isn’t a rational number either since forth there is no known end to that.  

So, when solved:

A.) = 1.58113883...  (irrational)

B.) = -8 (rational)

C.) = 8.94427191... (irrational)

D.) = 3.794733192... (irrational)

I hope you see the pattern.  Hope this helps!

Answer:

k = 2 √ 19 , − 2 √ 19

Step-by-step explanation:

Take the root of both sides and solve.

Answer:

± 8.7178 or ± the square root of 19

Step-by-step explanation:

Solve  :    k2-76 = 0

Add  76  to both sides of the equation :

                     k2 = 76

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     k  =  ± √ 76  

Can  √ 76 be simplified ?

Yes!   The prime factorization of  76   is

  2•2•19

To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).

√ 76   =  √ 2•2•19   =

               ±  2 • √ 19

The equation has two real solutions  

These solutions are  k = 2 • ± √19 = ± 8.7178  

Answer:

Bruh your in high school yo know this stuff just make everything a decimal to get your answer. Lol you really forgot this?

Step-by-step explanation:

Answer:

-7/2 ,-2/8,  0.7,  2/3,  3/4

Step-by-step explanation:

pls  look at my question to pay it back!!

Answer:

The two people should stand 40 feet from the center so that they can hear each other whisper

Step-by-step explanation:

From the question

Width of the gallery = 100 feet

Width = 2a

a = Width/2

a = 100/2 = 50 feet

Height of the gallery = b = 30 feet

Hence, the distance is

d² = a² - b²

d = √a² - b²

d = √50² - 30²

d = √2500 - 900

d = √1600

d = 40 feet

Hence, the two people should stand 40 feet from the center so that they can hear each other whisper.

Answer:

To find the answer we only need to know,

Total no.of girls and Total no.of right handed girls.

So,

Total no.of right handed girls = 7/8

Total no.of girls                        = 8/8 (as given in question)

Total no.of left handed girls is,

(Fraction of total no.of girls) - (Fraction of total no.of left handed girls)

= 8/8 - 7/8

= 1/8

∴ 1/8 of the girls in the school are left handed.

Answer:

y=1/2x+8

Step-by-step explanation:

The slopes will be the same but the y-intercept will be different. I graphed out which equation will pass through (4,10) and also be parallel to y=1/2x-8.

Answer: 1/2 which equals 50%

Step-by-step explanation:

Answer:

0.5 because there are 4 numbers and 2 of them are even so it would be 1/2

Answer:

-24

Step-by-step explanation:

plz mark brainlyest

Answer:

This is how you do it. Find the radius of it. There is ur answer

Step-by-step explanation:

Answer:

x³ + x² - 60x + 18

General Formulas and Concepts:

Step-by-step explanation:

Step 1: Define expression

(x³ + x² - 61x + 25) + (x - 7)

Step 2: Simplify

Answer:

Option F: $71.43 is the correct answer.

Step-by-step explanation:

By the question we can observe that 35% of regular price is $25 so this information will be used to calculate the original price of the shoes.

Let

P be the price of shoes

and d be the discount

So

[tex]d = \$25\\P=?[/tex]

The discount is 35% of P so

[tex]d = 35\%\ of\ P\\25 = 0.35 * P\\P = \frac{25}{0.35}\\P = 71.42857...[/tex]

Rounding off to the nearest hundredth

The regular price is: $17.43

Hence, option F: $71.43 is the correct answer.

Answer: X= -3 = 2

Step-by-step explanation:

Answer:

[tex]y = -\frac{1}{4}x +2[/tex]

Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: [tex]\frac{y2-y1}{x2-x1}[/tex]

Given points: (-4, 3), (0, 2)

(0, 2) = (x1, y1)

(-4, 3) = (x2, y2)

To write the equation in slope-intercept form, we need to find the slope(m) and the y-intercept(b) of the equation.

First, let's find the slope. To do this, input the given points into the formula used to find slope:

[tex]\frac{3-2}{-4-0}[/tex]

Simplify:

3 - 2 = 1

-4 - 0 = -4

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

The slope is [tex]-\frac{1}{4}[/tex].

To find the y-intercept, input the slope and one of the given points(in this example I'll use point (0, 2)) into the equation and solve for b:

[tex]2 = -\frac{1}{4} (0)+b[/tex]

2 = 0 + b

2 = b

The y-intercept is 2.

Now that we know the slope and the y-intercept, we can write the equation:

[tex]y = -\frac{1}{4}x +2[/tex]

Answer:

i help to solve the problem

Answer:

120

Step-by-step explanation:

Answer:

m∠B = 69°

General Formulas and Concepts:

Step-by-step explanation:

Step 1: Define

m∠A = (x + 9)°

m∠B = (7x - 15)°

Step 2: Set up equation

m∠A + m∠B = 90°

(x + 9)° + (7x - 15)° = 90°

Step 3: Solve for x

Step 4: Find m∠B

Answer:

tbh there are quite a lot of possibilities

I'll just name the properties but not show which angle applies to it cos that's too time consuming

Step-by-step explanation:

vertically opposite angles

interior / exterior alternate angles

corresponding angles

angles on a straight line are supplementary

Answer:

9 3/5

Step-by-step explanation:

96/10 = 48/5

Answer:

x = 20

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180

3x + 1 + x + 14 + 4x + 5 = 180, that is

8x + 20 = 180 ( subtract 20 from both sides )

8x = 160 ( divide both sides by 8 )

x = 20

Answer:

yes because it can be written as 23/100

Step-by-step explanation:

I did this before and I have gotten it correct.