again pls help me I'm struggling in math

Answer:

im gonna guess that the x's aren't multiplication, the answer is 14x+20

Answer:

1.024km/h

Step-by-step explanation:

speed=distance/time

speed=420/6 hours 15 minutes

speed=420/410

speed=1.024km/h

Answer:

x = 78

y = 115

Step-by-step explanation:

Answer:

X= 78°

Y=115°

Step-by-step explanation:

180° - 102°

115 = 115°

Answer:

Step-by-step explanation:

the awnser is 04

So if we don't unnecessarily confuse ourselves by taking  bases, a 2x2 matrix will always have rank 2 unless one row or column is a scalar multiple of the other*, in which case it will have rank 1. (and also it'll have rank 1 if you have a row or column of zeroes, and rank 0 if it's the zero matrix).

Answer:

C≈13.19 cm

Step-by-step explanation:

The circumference of a circle equation is C=2πr. Use the circumference of a circle equation and substitute the radius for 2.1. Then, you can calculate 2·π·2.1. The answer to the circumference of a circle is about 13.1946. Finally, you round to the nearsest hundredths place, so the answer is about 13.19 cm.

Work

C=2πr

C= 2·π·2.1

C≈13.1946≈13.19

Answer: 50

Step-by-step explanation:

exterior angles are supplement of interior angle therefore the 110 thing must be 70, also youre given 60 so 70+60=130

50 is missing from 180

Answer:

10 days

Step-by-step explanation:

15 men -----  12 days

18 men -----    x ?

They are inversely proportional

more men less days

15 / 18  * 12 = 10 days

Answer:

y=-1/3x+9

Step-by-step explanation:

Answer:

$4.75 per round

($19 total with all rounds)

Step-by-step explanation:

$22.50 - $3.50 (the cost of shoes) = $19

$19 / 4 = $4.75

Answer:

119/20 or 5 19/20

Step-by-step explanation:

.

Answer:

D=4

Step-by-step explanation:

a. The solution of the equation x + 2 = √3x + 10 is x = -3 or x =2.

b. Extraneous solution is x= -3.

c. Extraneous solution does not satisfy original equation.

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

As given in the question,

Given equation :

x + 2 = √3x + 10

a. Squaring both the sides

( x + 2 )² = ( √3x + 10 )²

⇒ x² + 4x + 4 = 3x + 10

⇒ x² + x - 6 =0

⇒ x² + 3x -2x -6 =0

⇒ ( x+ 3) ( x -2) =0

⇒ x= -3 or x = 2

b. Extraneous solution:

x = -3

-3 + 2 = √3(-3)+ 10

⇒ -1  ≠ 1 extraneous solution.

x= 2

2+ 2 =√3(2) +10

⇒4 = 4 not extraneous.

c. Extraneous solution does not satisfy original equation

Therefore, the solution of the equation is x = -3 or x=2and its extraneous solution is x =-3. Extraneous solution does not satisfy original equation.

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The complete question is :

Use the equation below to answer these questions.

x + 2 = √3x + 10

a) What is the solution to the equation?

b) What is the extraneous solution? Why?

c) In general, what is an extraneous solution?

Answer:

780 = 180 + 40x

Step-by-step explanation:

first we need to isolate the variable

780-180 = 180-180 + 40x

600 = 40x

600/40 = 40x/40

15=x

so the unit rate or rate per hour Mr. Harris earns is $15 per hour

Hope this helps!

Answer:

B, C, F

Step-by-step explanation:

There are 5 cupcakes in store B worth 6.95

to find out each cupcake, you divide 6.95 by 5

the answer is 1.39, which is lower than 1.45!

same concept for the others

Hope this helps and a thank won't hurt! :)

Answer:

x = 3.9

Step-by-step explanation:

x = gigabytes

$56 + $4 x = $71.60

56 + 4x = 71.60

   4x = 71.60 - 56

    4x = 15.60

     x = 3.9

Answer:

what?

Step-by-step explanation:

The solution of the expression (- 3 - x) (x + 42) (x - 16) will be;

⇒ - x³ - 29x² + 564x + 2,496

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The expression is,

⇒ (- 3 - x) (x + 42) (x - 16)

Now,

Solve the expression as,

⇒ (- 3 - x) (x + 42) (x - 16)

⇒ (- 3x - 156 - x² - 42x) (x - 16)

⇒ (- x² - 45x - 156) (x - 16)

⇒ - x³ + 16x² - 45x² + 720x - 156x + 2,496

⇒ - x³ - 29x² + 564x + 2,496

Thus, The solution of the expression (- 3 - x) (x + 42) (x - 16) will be;

⇒ - x³ - 29x² + 564x + 2,496

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Answer:

l = 720ft w = 450ft

Step-by-step explanation:

[tex]2340 = 2l + 2w \\ l = w + 270 \\ 2340 = 2(w + 270) + 2w \\ 2340 = 2w + 540 + 2w \\ 1800 = 4w \\ w = 450 \\ \\ l = 450 + 270 \\ l = 720[/tex]

Answer: hope this

Step-by-step explanation:

Answer:

y = 3x - 5

Step-by-step explanation

Answer:

Y = 3x - 5

Step-by-step explanation:

6x - 2y = 10

-2y = -6x + 10

y = 3x - 5

Answer:$17.00

Step-by-step explanation:

You would add .25 and.60 then multiply by 20 to get your answer

Answer:

huhhhhhhhhhh■♤○♡¤《■■□○○

Answer:

12

Step-by-step explanation:

To evaluate 3(w*8)+x, replace 'w' with (1/3) and 'x' with 4:

3([1/3]*8) + 4

We can multiply 3, [1.3] and 8 in any order, then add 4:

1*8 + 4, or            8 + 4 = 12

Answer:

10

Step-by-step explanation:

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

The two numbers are 3842 and 2642.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

Two numbers:

The difference between the numbers is 1200.

The total of the two numbers = 6484.

Let the numbers be M and N.

Now,

M - N = 1200 ____(1)

M + N = 6484 _____(2)

From (1) and (2) we get,

M = 1200 + N ____(3)

Putting (3) in (2) we get,

1200 + N + N = 6484

1200+ 2N = 6484

2N = 6484 - 1200

2N = 5284

N = 5284/2

N = 2642 putting in (3) we get,

M = 1200 + N

M = 1200 + 2642

M = 3842

Thus the two numbers are 3842 and 2642.

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Answer:

x=0

Step-by-step explanation:

5/2x=x/10

Answer:

X=5,-5

Step-by-step explanation:

Use cross multiplication to find 2x^2=50. Now we can divide both sides by 2 and get x^2=25, Now we can square root both sides and x can be 5 or -5

Answer:

false

Step-by-step explanation:

it would be subtracting 6 units

please look at the image below.

Answer:49=yes, 28=no, -35=no, and -42=no

Step-by-step explanation:

I put it in a calculator

Answer:

bro can you just not

SAS................

.........................

Answer:

Well you got 1/4 + 1/12

So we have to have the same denominator in order to solve this

So by finding a common multiple, you would be able to solve this

So in this case is the common multiple.

we already have a 12 so we leave that be.

We need to convert 1/4 to x/12

To Do that we multiplying it by 3

so 3/12 + 1/12

Now add normally and keep the denominator

4/12

or 1/3

Answer:

[tex]\sf \cfrac{1}{4}+\cfrac{1}{12}[/tex]

First find the Least Common Denominator (LCM) of 4, 12.

Join the denominators.