MATHEMATICS HIGH SCHOOL

What is 2x + 18 = 20?????

Answers

Answer 1

Answer:

2x + 18 = 20

-18 -18

2x = 2

(Divide by 2)

x = 1

Hope this helps you!!!

Answer 2

Answer:

Step-by-step explanation:

Hello there!

Just solve for x by combining like terms:

2x+18=20

2x=20-18

2x=2

x=1

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Input the equation for the following line in standard form Ax + By =c. Reduce all fractional answers to lowest terms. A line with y-intercept of 2 that is parallel to 2x + y = -5. Given two points on the line, input the equation of the line in standard form Ax + By = c. Reduce all fractional answers to lowest terms. (7, -3), (4, -8) A line that passes through the origin and is parallel to x + y = 6.

its cost 50 to make a bracelet and 1$ to make a necklace to make a profit the total cost for bracelets and necklaces must be less than 10$ the jeweler can make no more than 14 pieces of jewelry each day write a system of inequalities to model the number of bracelets and necklaces to be made each day

Answers

b + n ≤ 14 and .50b + 1n < 10 This is because the total number of bracelets added to the total number of necklaces made each day must be less than or equal to 14. Also, the price of each bracelet (.50b) added to the price of each necklace (1n) must be less than $10.

PLZ HELP MEH WITH MATH XD

Answers

To add any fraction You need to make sure that the denominator of the fractions are same. ( denominator in your sum is 19 )

10/19 + 3/19 ( we have the same denominator )
we can also write this problem like
( 10 + 3 ) / 19 { add the numerators together }
13 / 19

So correct option is B.

hope this helped.. :)

10/19+ 3/19 (common denominator is 19)
= (10+ 3)/19
= 13/19

The correct answer is B. 13/19.

Which of the following functions are solutions of the differential equation y'' + y = sin(x)?a) y= sinxb) y= cosx
c) y=1/2sinx
d) -1/2xcosx

Answers

Answer:

Option (d)

Step-by-step explanation:

Given,

y" +y=sin x ...........(1)

The particular solution

$y_p=A x sinx +Bx cosx$

$y'_p=Axcosx+Asinx+B cosx-Bxsinx$

$y$

Putting the value of y" and y in equation (1)

$2Acosx-Axsinx-2Bsinx-Bxcosx+Axsinx+Bxcosx = sinx$

$\Rightarrow 2Acosx-2Bsinx=sinx$

Therefore 2A =0 -2B=1

⇒A=0 $\rightarrow B=-(1)/(2)$

Therefore $y_p=-(1)/(2) x cosx$

Final answer:

The solutions of the differential equation y'' + y = sin(x) are y = cos(x), y = (1/2)sin(x), and y = -(1/2)xcos(x).

Explanation:

To determine which of the given functions are solutions of the differential equation y'' + y = sin(x), we can substitute each function into the equation and check if it satisfies the equation. Let's go through each option:

Substituting y = sin(x) into the equation, we get -sin(x) + sin(x) = sin(x), which is not true. So, y = sin(x) is not a solution.
Substituting y = cos(x) into the equation, we get -cos(x) + cos(x) = sin(x), which is true. So, y = cos(x) is a solution.
Substituting y = (1/2)sin(x) into the equation, we get -(1/2)sin(x) + (1/2)sin(x) = sin(x), which is true. So, y = (1/2)sin(x) is a solution.
Substituting y = -(1/2)xcos(x) into the equation, we get (-1/2)xcos(x) + (1/2)xcos(x) = sin(x), which is true. So, y = -(1/2)xcos(x) is a solution.

Therefore, the solutions of the differential equation y'' + y = sin(x) are y = cos(x), y = (1/2)sin(x), and y = -(1/2)xcos(x).

Learn more about Solutions of a differential equation here:

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in a circle graph above you can see that 47 percent of the companys monthly income is used to pay the owners personal salary if the amount of the owners personal salary was 2,176.10 this month what was the companys total income this month

Answers

the first thing you have to do is to divide the personal income by the percen it takes up

2,176.10/47=46.3

that means that 46.3 is 1% of the whole, so if we multiply it by 100 you will get the whole

46.3*100=4630

so the answer is

4,630

What multiplies to 16 and adds to negative 12

Answers

factor 16 and see the - factor pairs and add them, see which add to -12
-1-16=-17 nope
-2-8=-10 nope
-4-4=-8
hmm

we will solve with math
xy=16
x+y=-12
minus x both sides
y=-12-x
sub for y in other equation
x(-12-x)=16
-12x-x^2=16
add 12x+x^2 both sides
0=x^2+12x+16
use quadratic formula
if you have
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}$

0=x^2+12x+16
a=1
b=12
c=16

x= $\frac{-12+/- \sqrt{12^(2)-4(1)(16) }}{2(1)}$
x= $(-12+/- √(144-64 ))/(2)$
x= $(-12+/- √(80))/(2)$
x= $(-12+/- 4√(5))/(2)$
x= $\frac{-6+/- 2√(5)$
x= $\frac{-6+ 2√(5)$ or $\frac{-6- 2√(5)$

aprox
x=-1.52786 or -10.4721

those are the numbers

the numbes are -1.52786 or -10.4721

8 times 2 8 because they are both equability right

Gary mails 10^3 flyers to clients in one week . How many flyers does Gary mail?

Answers

He mails

(10^3) x (the number of weeks he keeps it up)

of them.

10^3
10*10*10
1000
:) :)

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