Please help I’m failing math

Answer:

Step-by-step explanation:

1) -28r +14=-12r-2

-16r=-16

r=1

~~~~~~~~~~~~~~~~

2) -35x+5=6x-36

-41x=-41

x=1

Answer:

12742π kilometers

Step-by-step explanation:

Circumference = 2πr

Circumference = 2(r)π

r = 6371

Circumference = 12742π

If my answer is incorrect, pls correct me!

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-Chetan K

Answer:

12742

Step-by-step explanation: Khan Academy

Answer:

yes it is.....................

Step-by-step explanation:

9.5 = 19/2

So it is a rational number (and so is not irrational)

Answer:

143 = EFD

Step-by-step explanation:

The two angles form a straight line

AFD = 180

AFD = AFE + EFD

180 = 37+ EFD

180 -37 = EFD

143 = EFD

Step-by-step explanation:

25847 /5839(3910)466410(:75920)2

Answer:

-8r

Step-by-step explanation:

-5r - 3r

Combine like terms

Factor out r

r( -5-3)

-8r

Answer:

like bases  combine under add/subtract

-5 minus 3 is -8

-8r would be the solution

Step-by-step explanation:

Answer:

when you divide 2by1you get 2so you can't really round off

Answer:

35

x

6

−

4

7

35x   -   4

6            7

Step-by-step explanation:

Hi

if she recieived 13 bills and 4 are 10 $? then we have 13-4= 9 20$ bills

so 4x10 +9x20 = 40+180 = 220

So yes it's true

Answer: -22

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

Given information

m = 1

n = -3 (2) = -6

Given expression

2m - 4n (3m - 4)

Substitute values into the expression

=2(1) - 4(-6) (3(1) - 4)

Simplify by multiplication

=2 + 24 (3 - 4)

Simplify values in the parentheses

=2 + 24 (-1)

Simplify by multiplication

=2 - 24

Simplify by subtraction

=[tex]\boxed{-22}[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Ex:-

[tex]\\ \rm\longmapsto \sqrt{9}=3[/tex]Hence its not a surd.

but

.

[tex]\\ \rm\longmapsto \sqrt{3},\sqrt{7}[/tex]Are surds.

There are six types of surds such as :

Answer:

OD for a triangle to exist it must equal 180 degrees as a final and this one only equals 160

Answer:

D. The shape is nonexistent.

Step-by-step explanation:

A triangle's angles must add up to 180 degrees.

60+60+40 is 160.

160[tex]\neq[/tex]180

Answer:

it would be the 1st option or in other words the one on the top left

Answer:

e^0=x^2-25=1

x^2=26

x=sqrt(26), pos and neg

The potential solution of the given equation is x=±√26. Therefore, option C is the correct answer.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.

The given equation is ln(x²-25)=0

x²-25>0

(x+5)(x-5)>0 (∵a²-b²=(a+b)(a-b))

x>-5 and x>5

Now, e⁰=x²-25

1=x²-25

x²=26

x=±√26

Therefore, option C is the correct answer.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ7

Answer:

Corresponding angles are equal

8x + 2 = 7x + 9

8x - 7x = 9 - 2

x = 7

Answer:

Everything is good but the 7th one. it shold be 6.009x10^-3

Step-by-step explanation:

given,

K is between J and M, L is between K and M, M is between K and N. JN = 14, KM=4 and JK= KL= LM

NL=?

according to the question,

J-------K-------L------M--------N

We know,

KM= 4

KL+LM=4

KL+KL=4 (LM=KM)

2KL=4

KL=2

SO,

JK=KL=2 and LM=KL=2

we have ,

JN=14

JK+KM+MN= 14

2+4+MN=14

MN=8

Now,

NL=LM+MN= 2+8= 10

Answer:

Anything to a negative power is always the reciprocal. An example might be 2⁻² can be written as 1/4

Step-by-step explanation:

Answer:

.78

Step-by-step explanation:

1.3 x0.6 is .78. easy peasy

Answer:

x=13

Step-by-step explanation:

C is the midpoint of line BD, BC=CD. 6x-16=4x+10, x=13

Answer:

Step-by-step explanation:

x = first number

x + 2 = second number

x + 4 = third number

5(x + 2) = 6 + 2x + 2 ( x + 4)

5x + 10 = 6 + 2x + 2x +8

5x - 4x = 14 - 10

x = 4

The first number (x) = 4

The second number ( x + 2) = 4 + 2 = 6

The third number (x + 4) = 4 + 4 = 8

Answer:

2x + 2x +2 + 2x +4 = 6x +6 =Sum

5 * (2x +2) = 2 * (2x + 2x +4) +6

10x + 10 = 8x + 8 + 6

2x = 4

x = 2

So the numbers are:

2x or 4

2 x + 2 = 6

2x + 4 = 8

Double-Check

5 * 2nd integer = 30

2 *  (1st + 3rd integers) = 24

30 is 6 more than 24

Success!!!

Step-by-step explanation:

Answer:

325

Step-by-step explanation:

k = -7

d=4

5(-7k + 4d)

5(-7(-7) + 4(4))

5(49 + 16)

325

please give brainliest I need it to level up

Answer:

True

Step-by-step explanation:

If A/B and C/D are rational expression then

A/B*C/D

Or

A/B*C/D=A/C*B/D

It means that if A/B and C/D are rational expression then their product with each other will also be a rational expression.

Answer:

5,12,13

Step-by-step explanation:

SEE THE IMAGE FOR SOLUTION

HOPE IT HELPS

HAVE A GREAT DAY

Answer:

I think you mean C.

Step-by-step explanation:

f(x) / g(x) = (x + 3)(x - 3)

                ==========

                  (x - 3)(x - 1)

f(x)/g(x) = (x+3) / (x - 1)

- ∞ < 1 U 1 < 3 U 3 < ∞  

Answer:

6

Step-by-step explanation:

6x * 1/x = 6x/1 * 1/x the x on top cancels the x on bottom so

= 6/1 * 1/1 = 6

Step-by-step explanation:

Corresponding angles are congruent if the two lines are parallel. All angles that have the same position with regards to the parallel lines and the transversal are corresponding pairs.