If 3.x - 7 = 5, then 2x – 1=?

Answer:

r = - 8

Step-by-step explanation:

First, put -3r + 16 and -r - 4r equal to each other. -3r + 16 = -r - 4r, then combine the -r -4r to equal -5r so the equation is easier to solve. -3r + 16 = -5r, then add 3r to both sides to get 16 = = -2r and then divide both sides by -2 to get r = -8.

Answer:

60 second

Step-by-step explanation:

6km into minutes

1 minutes is 60 second

Answer:

Step-by-step explanation:add by 13

12 + 13 = 25

25+ 13= 38

Answer:

True

Step-by-step explanation:

-6X = 42

Divide each side by -6

-6x/-6 = 42/-6

x = -7

Answer: a. $ 0.8

b. 1.25 meters

Step-by-step explanation:

Answer:

a. $ 0.8

b. 1.25 meters

Step-by-step explanation:

hope it helps

Answer:

do what

Step-by-step explanation:

Here is the answer for the problem I believe

Answer:

Hi there!

She used rounding to estimate the sum!

Step-by-step explanation:

Formula used:

[tex] {a}^{m} . {b}^{m} = (a \times b)^{m} \\ \\ [/tex]

[tex] {3}^{5} . {4}^{5} \\ = (3 \times 4) ^{5} \\ = {12}^{5} \\ [/tex]

So, Haley is incorrect.

Answer:

x = 15

Step-by-step explanation:

Use the direct variation equation, y = kx

Plug in the values of x and y to find k

y = kx

104 = k(8)

13 = k

So, the direct variation equation will be y = 13x

Plug in 195 as y to find x

y = 13x

195 = 13x

15 = x

So, x = 15 when y = 195

As The value of y varies directly with x, when y = 195, x will be 15.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, The value of y varies directly with x.

∴ y = kx.

If x = 8, then y = 104.

104 = 8k.

k = 104/8.

k = 13.                                  (constant of proportionality)

Now,  y =195.

∴ 195 = 13x.

x = 195/13.

x = 15

learn more about proportion here :

https://brainly.com/question/7096655

#SPJ2

Steps to solve:

-4x = 12

~Divide -4 to both sides

x = -3

Best of Luck!

Answer:

x=-3

Step-by-step explanation:

-x=12/4

-x=3

×=-3

Answer:

80

Step-by-step explanation:

Answer:

[See Below]

Step-by-step explanation:

✦ Solve for [tex]10y+30=100[/tex].

✦ Subtract [tex]30[/tex] on each side:

✦ Divide [tex]10[/tex] on each side:

So the answer would be [tex]7[/tex].

~Hope this helps Mate. If you need anything feel free to message me.

Answer:

the answer is $16

hope this helps

Answer:

-8.4

Step-by-step explanation:

Because if you want to find the opposite of a number then you find that same number on the other side on the number line for example, -4.5 you would go on the other side and you would get positive 4.5

Answer:

If you're refering to the additive inverse then it's, -8.4

Step-by-step explanation:

To get an additive inverse or more so an opposite, you simply add the negative to the original for 0.

Example: 8.4 + -8.4 = 0

Answer:

___________________

Answer:

wouldnt it be like 4 times 7 =  28? or something like that???

Answer:

4 times 7 equals 28

Step-by-step explanation:

Plz choose mine as brainliest

Answer:

I think it's one and one ten thousanths

Answer:

one and one ten-thousandth

Step-by-step explanation:

The answer is one and one ten-thousandth because:

1) The decimal point stands for "and"

2) The first 0 represents the tenths place

3) The second 0 represents the hundredths place

4) The third 0 represents the thousandths place

5) The one represents the ten-thousandths place

Hope this helps!

Answer:

The missing side length is 3x^2 + 2x -4

Step-by-step explanation:

Here, we are interested in calculating the length of the missing side.

Mathematically, the area of a rectangle = L * B

So since we have the area and one side, to get the other side, we shall need to divide the area by the side we have ;

Thus, the missing side length will be;

6x^3+19x^2+2x-20/2x+ 5

Please check attachment for the polynomial long division

The value of the other factor after the polynomial long division is 3x*2 + 2x -4

Answer:

w=13

Step-by-step explanation:

Answer:

w =13

Step-by-step explanation:

[tex]15+w=3w-11[/tex]

Collect like terms

[tex]15+11 =3w-w\\[/tex]

Simplify

[tex]26 = 2w[/tex]

Divide both sides of the equation by 2

[tex]\frac{26}{2} = \frac{2w}{2}[/tex]

Simplify

[tex]13 = w[/tex]

Switch sides

[tex]w =13[/tex]

Answer:

8.6

Step-by-step explanation:

Answer:

f(1) = -2

Step-by-step explanation:

Remember that when dealing with functions, it is written in the form of f(x)

We know that f(1) is the value of the function when the value of x is equal to 1

In this problem,  look on the graph to see

for x = 1

the value of the function is  f(1) = -2

Answer:

-2

Step-by-step explanation:

Step-by-step explanation:

Hey there!!

Let's check!

The equation are:

y=x

x - y = 0......(i).

y = x+2

x - y +2 =0......(i).

From equation (i).

[tex]slope(m1) = \frac{ - coeff. \: of \: x}{ coeff. \: of \: y} [/tex]

[tex]m1 = \frac{ - 1}{ - 1} [/tex]

Therefore the slopeof 1st equation is 1.

Now,

From 2nd equation.

[tex]slope(m2) = \frac{ - coeff. \: of \: x}{coeff. \: of \: y} [/tex]

[tex]m2 = \frac{ - 1}{ - 1} [/tex]

Therefore the slope of equation 2 is 1.

As per the condition of parallel lines,

m1= m2

From both equation we got,

m1=m2=1

So, the lines are parallel.

For perpendicular,

m1×m2 = -1

1×1 is not equal to -1.

So, they are not perpendicular.

So, The answer is Option A.

Hope it helps....

Answer:

-6<x<9 is the right option.

Answer:

3.947

Step-by-step explanation:

7 wholes = 7

one half = 0.5

1 whole = 1

nine tenths = 0.9

7.5/1.9 ≈ 3.947