PLEASE HELP ME!

Solve: system by elimination form

1.
2x + y = 25
3y = 2x - 13
----------------------------------------------------

Answer:

19

Step-by-step explanation:

Answer:

1. 2

2.3[tex]\sqrt{5}[/tex]

3.8[tex]\sqrt{6}[/tex]

4.2.5[tex]\sqrt{10}[/tex]

Step-by-step explanation:

Remember that [tex]\frac{\sqrt{a}}{\sqrt{b}}[/tex]=[tex]\sqrt{\frac{a}{b} }[/tex], and [tex]\frac{a}{\sqrt{b}}[/tex]=[tex]\frac{a}{\sqrt{b}}[/tex]*[tex]\frac{\sqrt{b}}{\sqrt{b}}[/tex]=[tex]\frac{a\sqrt{b}}{b}[/tex]

1. [tex]\frac{\sqrt{48}}{\sqrt{12} }[/tex]= [tex]\sqrt{\frac{48}{12} }[/tex]=[tex]\sqrt{4}[/tex]=2

2. [tex]\frac{15}{\sqrt{5} }[/tex]=[tex]\frac{15}{\sqrt{5} }[/tex]*[tex]\frac{\sqrt{5}}{\sqrt{5} }[/tex]=[tex]\frac{15\sqrt{5} }{5}}[/tex]=3[tex]\sqrt{5}[/tex]

3. [tex]\frac{48}{\sqrt{6}}[/tex]= [tex]\frac{48}{\sqrt{6}}[/tex]* [tex]\frac{\sqrt{6}}{\sqrt{6}}[/tex]= [tex]\frac{48\sqrt{6}}{6}[/tex]=8[tex]\sqrt{6}[/tex]

4. [tex]\frac{25}{\sqrt{10}}[/tex]=[tex]\frac{25}{\sqrt{10}}[/tex]*[tex]\frac{\sqrt{10}}{\sqrt{10}}[/tex]=[tex]\frac{25\sqrt{10}}{10}[/tex]=2.5[tex]\sqrt{10}[/tex]

Answer:

At the point where x = 2.

Step-by-step explanation:

First find the derivative which gives us the gradient of the tangent at any point on the curve:

y = 5x^2 - 16x

y' = 5*2 x^(2-1) - 16 x(1-1)

y' = 10x - 16.

y' is the gradient at point of coordinate x.

So when the gradient = 4:

4 = 10x - 16

10x = 20

x = 2.

Answer:

x=2

Step-by-step explanation:

Answer:

90.2

Step-by-step explanation:

thx for the follow!!!

Answer:

105.8 is the answer

Step-by-step explanation:

105.8

A and C

A- AngleBAC and AngleCAE

C-AngleCAE and AngleFAE

Step-by-step explanation:

Edg2021

Answer:

The answer is  A. AngleBAC and AngleCAE and C. AngleCAE and AngleFAE

Step-by-step explanation:

Got it right on the assignment.

Answer: $22.50

Step-by-step explanation:

The interest will be gotten by using the formula:

= PRT

= Principal × Rate × Time

= 400 × 7.5% × 9/12

= 400 × 0.075 × 0.75

= $22.50

The interest is $22.50

Answer:

1/20

Step-by-step explanation:

P(red,red) = 4/16 x 3/15 = 1/4 x 1/5

Answer:

6/24

5/24

Step-by-step explanation:

count how many cards there are(24) then Find out how many red cards there are(4/24=6

Given:

The equation is

[tex]\dfrac{3x}{7}+\dfrac{2}{7}=2[/tex]

To find:

The simpler equivalent form and solve the given equation.

Solution:

We have,

[tex]\dfrac{3x}{7}+\dfrac{2}{7}=2[/tex]

It can be written as

[tex]\dfrac{3x+2}{7}=2[/tex]

Multiply both sides by 7.

[tex]3x+2=14[/tex]

[tex]3x=14-2[/tex]

[tex]3x=12[/tex]

Divide both sides by 3.

[tex]x=\dfrac{12}{3}[/tex]

[tex]x=4[/tex]

Therefore, the simpler equivalent form of the given equation is [tex]3x+2=14[/tex] and the solution is x=4.

Answer:

33

Step-by-step explanation:

Answer:

a. 9in

Step-by-step explanation:

PLS MARK ME BRAINLIEST!!!!!!!

Answer:

ima guess $262.50

Step-by-step explanation:

Answer:

a negative rational number

Step-by-step explanation:

I'm pretty positive this is the answer, but its worded strange in my opinion

Ball will bounce 83.9 meters high on the 8th bounce.

Geometric sequence:

        [tex]T_n=ar^{n-1}[/tex]

        Here, [tex]a=[/tex] First term

         [tex]r=[/tex] Common ratio in each term

         [tex]n=[/tex] Number of term

    From the table attached,

                                       [tex]=\frac{320}{400}[/tex]

                                       [tex]=0.8[/tex]

           8th term of the sequence will be,

           [tex]T_8=400(0.8)^{8-1}[/tex]

           [tex]T_8=83.886[/tex]

                [tex]\approx 83.9[/tex] meters

Find out more information about geometric sequence here;

https://brainly.com/question/11266123?referrer=searchResults

Answer:

695 km and hour

Step-by-step explanation:

Answer:

A(t)= 18000(0.988)^t

Step-by-step explanation:

Given data

Ryan bought a brand new car for $18,000

Its value depreciated at a rate of 1.2%

Let us use the compound expression

A= P(1-r)^t

substitute

A= 18000(1-0.012)^t

A(t)= 18000(0.988)^t

Hence the expression is A(t)= 18000(0.988)^t

A function to represent the value of the car as a function of time is v(t) = 18000(0.988)^t

The standard exponential equation is in the form y = ab^x

b is the rate which can be growth or decline

If Ryan bought a brand new car for $18,000 and its value depreciated at a rate of 1.2%, the exponential equation represented by this statement is;t

v(t) = 18000(1-0.0012)^t

v(t) = 18000(0.988)^t

Hence a function to represent the value of the car as a function of time is v(t) = 18000(0.988)^t

Learn more on exponential function here: https://brainly.com/question/12940982

Answer:

s+45≥100

Step-by-step explanation:

"A minimum of" means either the same amount or more. So, the total amount he sells (s + 45) needs to be greater than or equal to 100.

Answer:

The cost of

1 slice of pizza = x = $1.75

1 diet pepsi = y = $1.25

Step-by-step explanation:

Let us represent:

The cost of

1 slice of pizza = x

1 diet pepsi = y

Tyler bought two pieces of pizza and three diet Pepsi for $7.25

2x + 3y = 7.25.......Equation 1

Scotty but four pizzas and a diet Pepsi for $8.25

4x + y = 8.25......Equation 2

Combining the Equations

2x + 3y = 7.25.......Equation 1

4x + y = 8.25......Equation 2

y = 8.25 - 4x

We substitute 8.25 - 4x for y in Equation 1

2x + 3(8.25 - 4x) = 7.25

2x + 24.75 - 12x = 7.25

Collect like terms

24.75 - 7.25 = 12x - 2x

17.5 = 10x

x = 17.5/10

x = $1.75

Solving for y

y = 8.25 - 4x

y = 8.25 - 4(1.75)

y = 8.25 - 7

y = $1.25

Therefore,

The cost of

1 slice of pizza = x = $1.75

1 diet pepsi = y = $1.25

Answer:

C

Step-by-step explanation:

We can use the pythagorean theorem (A^2 + B^2 = C^2) To solve this question.

For answer A, we add 6^2 (36) and 8^2(64) to get 10^2 (100). This is a right triangle.

For question B, we add [tex]\sqrt{3}[/tex] ^2 (3) and [tex]\sqrt{8}[/tex]^2 (8) to get [tex]\sqrt{11}[/tex]. This is a right triangle.

For question C, we add 3^2 and 5^2 to get [tex]\sqrt{34}[/tex]. This is not a right triangle.

Answer:

I believe the answer is 8.

B i think i am sorry if it is not right but i am pretty sure i am right tho

Answer:

120

Step-by-step explanation:

use a calculator (if you have one )

Answer:

1630

Step-by-step explanation:

Hope this helps

Answer:

31.42

Step-by-step explanation:

equation for solving is C= π d

circumference is  π x diameter

so therefore the new equation is π x 10

3.14 (π) x 10 (d) = 31.42

Answer:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Point Form:

(0,2)

Equation Form:x=0, y=2

Answer:

(0,2)

Step-by-step explanation:

Multiply each equation by the value that makes the coefficients of  y  opposite.

3*2x-y=3*-2

Simplify

6x-3y=-6

Add the two equations

10x = 0

Divide both by 10 and simplify

x=0

Substitute x into the equations.

4*0+3y=6

3y=6

2

y=2

Answer:

x≤13

Step-by-step explanation:

-4+x≤9

Add 4 to each side

-4+4+x≤9+4

x≤13

Answer:

x≤13

Step-by-step explanation:

khan

Answer:

The minimum number of miles you would need to drive in a month to make the first deal a better deal is 66.6 miles.

Step-by-step explanation:

For the first deal to be a better deal it has to cost less than the second plan and you can write an equation in which the first plan has a lower cost than the second one:

10+0.60m<0.75m, where:

m is the number of miles driven

Now, you can solve for m:

10<0.75m-0.60m

10<0.15m

10/0.15<m

m>66.6

According to this, the answer is that the minimum number of miles you would need to drive in a month to make the first deal a better deal is 66.6 miles.

Answer:

240

Step-by-step explanation:

82-2= 80 to the third power so just multiply 80 x 3 and you have your answer.

Answer:

512000 (square root of it is 712.5)

Step-by-step explanation:

82 -2 = 80

80^3

= 80*80*80

= 80^3

= 512000 (square root of it is 712.5)

Let me know if this was helpful!!