Pls help me with this math

Answer:

x=2.5 for the second question!

x= -8.3 repeating for the 5th question

Step-by-step explanation:

Answer:

1. x = 9

2. x = 5/2

3. x = -64

4. x = -20

5. x = -5

6. x = 19

7. x = -6

Step-by-step explanation:

1.

-3x + 9 = -18

-3x = -27

x = 9

2.

2x - 14 = -9

2x = 5

x = 5/2

3.

x/2 + 8 = -24

x/2 = -32

x = -64

4.

-2.5x - 10 = 40

-2.5x = 50

x = -20

5.

-6x - 10 = 20

-6x = 30

x = -5

6.

50 = 2x + 12

38 = 2x

19 = x

x = 19

7.

x/2 - 7 = -10

x/2 = -3

x = -6

Answer:

Using the slope-intercept form, the slope is 4 .

Answer:

the slope of this is 10

Step-by-step explanation:because while you solve -4 and x-3 you have to divide then subtract to the point get to ten. hope this helps

Answer:

(x + 2) (x + 3)

Step-by-step explanation:

x² + 5x + 6

x² + 3x + 2x +6

Answer:

x = 16[tex]\sqrt{3}[/tex]

y = 8[tex]\sqrt{3}[/tex]

Step-by-step explanation:

For this type of equation, you are going to use the following trigonometric signs tangent and cosine.  Tangent is used for the y-variable and cosine is used for the x-variable.  For the y-variable, it is 24 tan 30 to get 8 root 3 as your answer.  For the x-variable, you would get ([tex]\sqrt{3}[/tex] / 2)x = 24.  Divide that root number to get 16[tex]\sqrt{3}[/tex] as your x variable.

Answer: 16 sqrt 3. 8 sqrt 3

Step-by-step explanation:

Answer:

-3.56 i think .

Step-by-step explanation:

Answer:

a) x(x-2)

b) 6x(2x+2)

dont know c and d sorry

Step-by-step explanation:

Answer:

1.2×1.3=1.56

Step-by-step explanation:

1.2 ×1.3=1.56

Answer:

1.2

Step-by-step explanation:

x+1.3=1.56

x=1.56

1.3

=1.2

Answer:

Inequality: x ÷ 4 ≤ 5

Solution: x ≤ 20

Step-by-step explanation:

quotient = division

at most = either ≥ or ≤

x ÷ 4 ≤  5

x ÷ 4 x 4 ≤ 5 x 4

x ≤ 20

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answer:

Magnitude is 5

Step-by-step explanation:

Using the formula for calculating the distance between two points expressed as:

D = √(x2-x1)²+(y2-y1)²

Given the coordinates  (3,5) and (-1,2)

D = √(2-5)²+(-1-3)²

D = √(-3)²+(-4)²

D = √9+16

D = √25

D = 5

Hence the magnitude is 5

Answer:

about 81 percent

Step-by-step explanation:

3/16=0.812...

Answer:

I don't  know

Step-by-step explanation:

I see now question below so  can not answer.

Answer:

Below.

Step-by-step explanation:

You can use any 4 x values, so we could have:

- 2  0  2  4

Now find the corresponding y values by substitution in the equation:

For x = -2, y = 1/2 *-2 + 2 = 1.

For x = 0, y = 1/2 * 0 + 2 = 2.

For x = 2 , y = 1/2* 2 + 2 = 3.

For x =  4 , y = 1/2 * 4 + 2 = 4.

So the table is:

-2   0    2   4

1    2    3   4

You then plot the points (-2, 1), (0, 2), (2, 3) AND (4, 4) on the grid  and draw a line through them The graph will be a straight line.

Answer:

Alonzo Appetizers

Step-by-step explanation:

Cost of 30 people for Alonzo is $1400 while cost of Ben's is $2250

Answer:

a=-5

Step-by-step explanation:

a+7=2

move the constant to the right

a=2-7

then calculate the difference

a=-5

So a=-5 is your answer

Answer:

[tex]y = - x + 2[/tex]

Step-by-step explanation:

[tex]y = mx + b[/tex]

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

[tex]y = - x + 2[/tex]

Answer:

The unit rate that Jeremy can row is 1.33 miles per hour.

Step-by-step explanation:

Unit rate is defined as the distance over a time period. The distance that Jeremy can row is given and the time period is given.

The distance (miles)=1/3=0.3333333...

time period: 1/4

0.33333/0.25=1.333333

Answer: Choice C) [tex]\frac{\sin(23)}{6.2} = \frac{\sin(85)}{b}[/tex]

=========================================================

Explanation:

The angle opposite side b is 85 degrees. So we'll involve either the fraction [tex]\frac{\sin(85)}{b}[/tex] or [tex]\frac{b}{\sin(85)}[/tex]. In this case, we will use the first fraction. This is due to all of the answer choices having sine on top.

The other fraction must have sine on top as well.

The known side is AB = 6.2; the opposite angle is C = 23 which you find by solving A+B+C = 180 and plugging in A = 72 and B = 85.

So the other fraction we'll use is [tex]\frac{\sin(23)}{6.2}[/tex]

Overall, the proportion we can set up is

[tex]\frac{\sin(23)}{6.2} = \frac{\sin(85)}{b}[/tex]

which points to choice C as the final answer.

Answer:

Hope it helps) and HAPPY NEW YEAR MY DEAR

Step-by-step explanation:

Let A be the number of cards Alan has

B be the number of cards Bill has

C be the number of cards Calvin has

Alan had 11 less than 2 1/2 times the number of cards bill has.

is 2.5

Alan is 2.5 of bill has minus 11

A=2.5B -11

Calvin has 1 more than 1 1/2 times the number of cards bill has.

is 1.5

Calvin is 1.5 of bill has plus 1

C=1.5B + 1

Alan and Calvin have the same number of cards

So A=C

WE plug in A and C equations and solve for B

2.5B -11 = 1.5B + 1 (subtract 1.5B on both sides)

1B -11 = 1 (Add 11 on both sides)

B = 12

If Alan and Calvin have the same number of cards, the number bill has is 12

The number of cards Alan and Calvin each have is 19

Total cards = 12 + 19 + 19 = 50

If Alan, bill, and Calvin have all the cards in the deck then the deck has 50 cards.

Answer:

64.23%

Step-by-step explanation:

Percent error

(699-250)/699  x 100 = 64.23

Answer: the answer is 64%

Step-by-step explanation:

answere=-1

this is the answere and the explanation.

By substituting x = -1/2, the expression [tex]\(f(x) = \frac{\sqrt{2x} + 3}{6x - 5}\)[/tex] can be simplified to[tex]f(x) = \(f(-\frac{1}{2}) = \frac{\sqrt{3 - \sqrt{2}}}{-8}\).[/tex].

To find [tex]\(f(-\frac{1}{2})\)[/tex], substitute [tex]\(-\frac{1}{2}\)[/tex] into the function f(x):

[tex]\(f(-\frac{1}{2}) = \frac{\sqrt{2 \cdot (-\frac{1}{2}) + 3}}{6 \cdot (-\frac{1}{2}) - 5}\)[/tex]

Now, simplify the expression inside the square root:

[tex]\(f(-\frac{1}{2}) = \frac{\sqrt{-\sqrt{2} + 3}}{-3 - 5}\)\\\(f(-\frac{1}{2}) = \frac{\sqrt{3 - \sqrt{2}}}{-8}\)[/tex]

So, [tex]\(f(-\frac{1}{2}) = \frac{\sqrt{3 - \sqrt{2}}}{-8}\)[/tex].

To know more about substitution, refer here:

https://brainly.com/question/29560851

#SPJ2

Answer:

n= 27

Step-by-step explanation:

n+6+2n+3=90

3n=81

n=27

Answer:

Step-by-step explanation:

Looking at the Venn diagram :

The total number of students surveyed is 7+5+8+6+2+4+3+6 = 41

The number of students that studies physics is = 14

The number of students that studies chemistry is =  21

Probability  = number of favorable outcomes / total number of outcomes

Therefore  the probability that a student chosen at random studies physics and chemistry or both is  35/41 = 0.85

Answer:

The slope is -7 / 5

Answer:

Step-by-step explanation:

factors for

40=1,2,4,5,8,10,20,40

41=1,41  prime

3526=1,2,41,43,82,86,1763,3526

1001=1,7,11,13,77,91,143,1001

Answer:

Factors Of 40 in Pairs

1 × 40 = 40.

2 × 20 = 40.

4 × 10 = 40.

5 × 8 = 40. Therefore, the factors in pairs are (1, 40), (2, 20), (4, 10) and (5, 8).

Factors of 41: 1, 41

Factors of 3526 =1, 2, 41, 43, 82, 86, 1763, 3526.

1, 7, 11, 13, 77, 91, 143, and 1001. Factors of 1001 include negative numbers.

Step-by-step explanation:

Answer:

m = -1

Step-by-step explanation:

y = -x can also be written as

y = -1x + 0

The slope is -1.

In slope intercept equations, if the slope is '1' or '-1' they would usually drop the one.

Hope this helps.

Answer:

the slope of the line y = -x will be: m = -1

The line graph is also attached below.

Step-by-step explanation:

The slope-intercept form of the line equation

[tex]y = mx+b[/tex]

where

Given the line

[tex]y = -x[/tex]

comparing with the slope-intercept form of the line equation

Therefore, the slope of the line y = -x will be: m = -1

The line graph is also attached below.

Answer:

∠1 = 40

Step-by-step explanation:

So due to the alternate interior angles theorem, angle 1 and angle 2 equal each other so:

2x + 20 = 3x + 10

subtract 2x from both sides

20 = x + 10

subtract 10 from both sides

10 = x

Now input 10 into the equation

2(10) + 20

20 + 20

40

Answer:hope it helped

Step-by-step explanation:

A function is always a relation