Help! Marking Brainliest!

Answer:

Step-by-step explanation:

[tex]2n + 3 = -3. 2\\\\\mathrm{Subtract\:}3\mathrm{\:from\:both\:sides}\\\\2n+3-3=-3.2-3\\\\Simplify\\\\2n=-6.2\\\\\mathrm{Divide\:both\:sides\:by\:}2\\\\\frac{2n}{2}=\frac{-6.2}{2}\\\\Simplify\\\\n=-3.1[/tex]

Answer:

it's the last one

Step-by-step explanation:

Answer:

No, it actually has infinite solutions.

Step-by-step explanation:

2x+4y=22 is your 1st equation

-x-2y=-11 is your 2nd equation.

Let's say you want to cancel out the x variable. Multiply the 2nd equation by 2.

Then your equations would be:

2x+4y=22

-2x-4y=-22

If you add both you will get 0=0

Since both sides are equal to each other, there are infinite solutions.

Answer:

42-12

Step-by-step explanation:

Here you go mate

Step 1

6(7-2)  Equation

Step 2

6(7-2)  simplify

6x5

answer

42-12=30  check

Answer:

Pythagorean Theorem:

a² + b² = c²

x² + 5x² = 78²

6x² = 6084

6x²/6 = 6084/6

x²=1014

√x² = √1014

x = 31.84

Mark Brainliest Please

Answer:

x ≈ 15.3

Step-by-step explanation:

Based on the pythagoras theorem

[tex]a^{2} + b^{2} = c^{2}[/tex]

Since the legs are "5x" and "x" we know the following....

[tex](5x)^{2} + x^{2} = 78^{2} \\25x^{2} + x^{2} = 6084\\26x^{2} = 6084\\x^{2} = 234\\x = \sqrt{234} \\x = 15.3[/tex]

(This is round did to the nearest tenth)

Since X increases by 1,

Divide the 2nd Y value by the first Y value:

4/6 = 2/3

The answer is 2/3

Answer:

38 is the correct answer plz tell me if im wrong

Step-by-step explanation:

Answer:

B. 504 units²

Step-by-step explanation:

We multiply 6 and 8, we don't need to divide by 2 since there are two congruent triangles. That gets us 48. Now, we multiply 19 and 8. That gets us 152. Now, we multiply 6 and 19. That gets us 114. We have found the area of all sides but one. To do this one, we need to calculate the hypotenuse of the triangle. The following screenshot has the formula to calculate hypotenuse. If a is equal to 6, and b is equal to 8, we can do this formula. 6² is 36, and 8² is 64. Now, we add 36 and 64. That gets us 100. The square root of 100 is 10. That means the hypotenuse of this triangle is 10. Now, we multiply 10 and 19 to get 190. Now, we add up the area of all the sides (48 + 152 + 114 + 190). That gets us 504. That means B is our answer.

Answer:

i believe a is -2.9

Step-by-step explanation:

do u want me to figure out the rest or did u just need me to do that one?

Answer:

a. 0.57

b. 0.22

c. 0.87

d. 0.9450

Step-by-step explanation:

A.

P(X>=1)

= 0.35 + 0.15 + 0.06 + 0.01

= 0.57

This is the probability of catching one or more fishes.

b.

P(X>=2)

0.15 + 0.06 + 0.01

= 0.22

This is the probability of catching 2 or more fishes.

C.

Compute μ

μ = E(X)

= (0x0.43) + (1x0.35) + (2x0.15) + (3x0.06) + (4x0.01)

= 0+0.35+0.3+0.18+0.04

= 0.87

D.

The standard deviation

Sd = √V(X)

V(X) = E(X²) - (E(X))²

E(X²) = (0²x0.43)+(1²x0.35)+(2²*0.15)+(3²*0.06)+(4²*0.01)

E(X²) = 0.35+0.6+0.54+0.16

= 1.65

V(X) = 1.65 - (0.87)²

= 1.65 - 0.7569

= 0.8931

Sd = √0.8931

= 0.9450

Answer:

5.625

Step-by-step explanation:

Answer:

Step-by-step explanation:

u+6 = - 5               Subtract 6

u + 6 - 6 = - 5 - 6

u = - 11

Try thinking this as money. If you are 5 dollars in the hole and you borrow another 6 dollars, where are you?

The answer is that unless you pay your debt of 5 dollars, you are - 11 dollars in the hole.

Answer:

$194.05 per hour

Step-by-step explanation:

Divide her total earnings by 28:

5433.35/28

= approximately 194.05

So, Sandra earns about $194.05 per hour

Answer:

mentally "cut" the two different figures where they connect and find the area separately and then add them together:

4*15 = 60

11*10= 110

110+60= 170 sq mm

Step-by-step explanation:

i hope this helped :)

Answer: m = 9.25h

Step-by-step explanation:

The money he earns per hour is $9.25

m = total money  h = hours he worked

m = 9.25h

Answer:

None of those answers is true.

Step-by-step explanation:

Answer:

None

Step-by-step explanation:

Answer:

Y-intercept is (0,8)

Step-by-step explanation:

The line of an equation is y=mx+b. M in this case is 1 and "b" is the y intercept. since in the place of b is positive 8 the y-intercept is 8

Answer:

so m=2 so y=2x+-3

Step-by-step explanation:

The linear function rule is y = x + 16

A linear equation is an algebraic equation of the form y = mx + b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.

Given, A line passes through the points (4,20) and (8,24)

From the slope-intercept form of a line:

Y = mx + c

Where,

m = slope = (y₂ - y₁)/ (x₂ - x₁)

c = constant

In our case,

m = (24 -20)/ 8-4

m = 4/4

m = 1

So the equation of a line

y = x + c

Since, this line passes through the point(4, 20)

20 = 4 + c

c = 16

Therefore, the equation of the line passes through the points (4,20) and (8,24) is y = x + 16

Learn more about Linear equations here:

https://brainly.com/question/11897796

#SPJ2

Answer:

[tex]Cost\ Price = 4331.25[/tex]

Step-by-step explanation:

Given

Selling Price = Sh. 4950

Profit = 12.5%

Required

Determine the cost price

Profit is calculated as:

[tex]Profit = \frac{Selling\ Price - Cost\ Price}{Selling\ Price} * 100\%[/tex]

Substitute values for Selling Price and Profit

[tex]12.5\% = \frac{4950 - Cost\ Price}{4950} * 100\%[/tex]

Cross Multiply:

[tex]4950 * 12.5\% = (4950 - Cost\ Price) 100\%[/tex]

[tex]\frac{4950 * 12.5\%}{100\%} = (4950 - Cost\ Price)[/tex]

[tex]618.75 = (4950 - Cost\ Price)[/tex]

Collect Like Terms

[tex]Cost\ Price = 4950 - 618.75[/tex]

[tex]Cost\ Price = 4331.25[/tex]

Hence, the cost price of the item is: Sh. 4331.25

Answer:

80˚

Step-by-step explanation:

Since the angles are equal, we can make this equation:

2x + 65 = 8x + 5

60 = 6x

x = 10

so if we put x = 10 in 8x + 5 we get

8x + 5

8(10) + 5

80 + 5

85

Answer:

2.25 and 4.95

Step-by-step explanation:

x + y = 7.2

x - y = 2.7

x = 7.2 - y

x - y = 2.7

(7.2 - y) - y = 2.7

7.2 - 2y = 2.7

-2y = 2.7 - 7.2

-2y = -4.5

-2y/-2 = -4.5/-2

y = 2.25

x + y = 7.2

x + 2.25 = 7.2

x = 7.2 - 2.25

x = 4.95

Check: 4.95 and 2.25

x + y = 7.2

(4.95) + (2.25) = 7.2

7.2 = 7.2

x - y = 2.7

(4.95) - (2.25) = 2.7

2.7 = 2.7

Answer:

x+y=7.2

x-y=2.7

Step-by-step explanation:

equation

x+2.7+x=7

2x=4.3

x=4.3/2

y=7-4.3/2

Answer:

one solution, no solution, infinitely many solutions

Step-by-step explanation:

I rearranged the first equation into x=6-2y

plug that into the second equation

2(6-2y)-3y=26

12-4y-3y=26

12-7y=26

-7y=14

y=-2

Then you plug that into one of the equations

x+2(-2)=6

x-4=6

x=10

The solution to the first system is (10,-2)

the second system already has one equation as something equal to a single variable so you just plug that into the other one

4x-2(2x-4)=-6

4x -4x +8 =-6

8=-6

this is a false statement so the system of equation has no solution

Lastly I rearranged the first equation into y=2x-4 and then plug that in

6x-3(2x-4)=12

6x-6x+12=12

12=12

this statement is true so the system of equations has infinite solutions

Answer:

The building is 187.5 feet tall.

Step-by-step explanation:

A nearby person is 6 feet tall, and casts a shadow that is 8 feet long.

This means that the relation between the real height and the shadow is given by:

[tex]\frac{6}{8} = \frac{3}{4}[/tex]

A tall building casts a shadow that is 250 feet long. How tall is the building?*

The real height is three fourths of the shadow. So

[tex]\frac{3}{4}*250 = 187.5[/tex]

The building is 187.5 feet tall.

Answer:

50

Step-by-step explanation:

48 rounds to 50

ANSWER: 50

Answer:

48.1

Step-by-step explanation:

5 and up, add 1

4 and down, don't change and the numbers after are gone.

Answer:

dogs

Step-by-step explanation:

they are more freindly

Answer:

dogs

Step-by-step explanation:

i just had to take a test and one of the questions was to write an essay about dogs or cats being better so i searched it up and it said  dogs