how do you solve the problem 2x+3y=25,4x-y=15 for substitution

Answer:

wat 12?

Step-by-step explanation:

Answer:

wat 12????????????????????????

Answer:

Step-by-step explanation:

5*π = 15.7079633

15.7079633 rounded to the nearest hundredth is 15.71

give me brainliest please

Answer:

C

pls mark brainliest if possible

Step-by-step explanation:

volume of square pyramid = area of base* 1/3*height of pyramid

v=a(1/3h)

a = area of base = 11*11 = 121

h=height = 15 cm

v=121 (1/3*15)

v = 121*5 = 605 cm^3

the answer is C

Answer:

w=7

Step-by-step explanation:

-12=9-3w

3w-12=9

3w=21

w=7

-12=9-21=-12

-12=-12

Answer:

X=7

Step-by-step explanation:

-12=9-3w

Subtract nine from both sides

-12=9-3w

-9. -9

-21=-3w

Divide by -3

-21/-3=7

X=7

The required triangle ADB and ABC, are congruent triangles by SAS postulate of congruency.

In congruent geometry, the shapes that are so identical. can be superimposed on themselves.

Here,
Consider triangle ADB and ABC,
AB = AB  [common side between the two triangles]
∠A = ∠B    [Both angles have an equal measure of 90°]
AD = BC    [Given in the question]

So, both triangles are congruent triangles by the SAS postulate of congruency.

Learn more about congruent geometry here. https://brainly.com/question/12413243

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Answer:

pls mark brainliest if possible:

slope is 1.5

Step-by-step explanation:

Slope = rise over run = (y2-y1)/(x2-x1)

choose y2 and corresponding x-coordinate is x2. If we choose 27 as y2, then:

x2 = 1

x1 = -9

y1 = 2

then plug everything into the equation

(27-2)/(1-(-9))

=15/10

= 1.5

slope is 1.5

hope this helps!

Answer:

[tex]VW = 33[/tex]

Step-by-step explanation:

See attachment for complete question

Given

[tex]VY = 4x - 1[/tex]

[tex]VW = 5x + 3[/tex]

[tex]Perimeter = 112[/tex]

Required

Determine the length of VW

Perimeter is calculated as:

[tex]Perimeter = 2 * (Width + Length)[/tex]

This gives:

[tex]Perimeter = 2 * (VW + VY)[/tex]

Substitute values for VW, VY and Perimeter

[tex]112 = 2 * (4x - 1 + 5x + 3)[/tex]

Collect Like Terms

[tex]112 = 2 * (4x + 5x -1 +3)[/tex]

[tex]112 = 2 * (9x +2)[/tex]

Divide through by 2

[tex]56 = 9x + 2[/tex]

Collect Like Terms

[tex]9x = 56 - 2[/tex]

[tex]9x = 54[/tex]

[tex]x = 54/9[/tex]

[tex]x = 6[/tex]

Substitute 6 for x in [tex]VW = 5x + 3[/tex]

[tex]VW = 5 * 6 + 3[/tex]

[tex]VW = 30 + 3[/tex]

[tex]VW = 33[/tex]

Answer:

Congruent

Step-by-step explanation:

Given:

The set of points.

To find:

Which set of points represents a function?

Solution:

A set of points represents a function if there exist a unique y-value for each x-value.

It option A, the set of points is

{(1,-2), (3,-5), (3,-2), (5,-7), (7, -8)}

This is not a function because there exist two y-values y=-5 and y=-2 for x=3.

It option B, the set of points is

{(0,1),(1,−3),(2,−5),(3,−7),(4,−9)}

This is a function because there exist a unique y-value for each x-value.

It option C, the set of points is

{(−1,1),(−1,3),(−1,5),(−1,7),(−1,9)}

This is not a function because there exist five y-values y=1,3,5,7,9 for x=-1.

It option D, the set of points is

{(−4,0),(−3,−1),(−3,1),(0,−2),(0,2)}

This is not a function because there exist two y-values y=-1 and y=1 for x=-3.

Therefore, the correct option is B.

Answer:

problem ...

Which of the following sets represents a function?

{(3, 5), (-1, 7), (3, 9)

{(1, 2), (3, 2), (5, 7)}

{(1, 2), (1, 4), (1, 6)}

Step-by-step explanation:i think is

{(1, 2), (3, 2), (5, 7)}

Answer:

-3m+2/3.     2/3 is a fraction

Step-by-step explanation:

Answer:

-12-(-23)

Step-by-step explanation:

2 subtraction signs will turn into addition

Answer:

0.4 ounces

Step-by-step explanation:

In a day

Miguel is to feed Chester ,

Chester can eat 3/4 of an ounce for each pound of body weight.

Chester weighs 6.8 pounds

Hence:

1 pound = 3/4 ounce

6.8 pounds = x ounces

Cross Multiply

x = 6.8 × (3/4) ounces

x = 5.1 ounces

Chester is to be fed 5.1 ounces of food each day.

The amount of food left after 1 day

= 5.5 ounces - 5.1 ounces

= 0.4 ounces

Hence, 0.4 ounces of food is left after 1 day

Answer:

Step-by-step explanation:

This is really a sloppy diagram. You have to know if the base of the triangle is 5 or 10.

It is 5. So the area of 1 of the triangles is 1/2 * b * h

b = 5

h = 8.7

Area = 1/2 * 8.7 * 5 = 21.75

There are 4 such triangles. The total area = 4 * 21.75 = 87 sqr in

Answer:

Step-by-step explanation:

It is solved for C unless you C = 5/9 * F - 32*5/9

C = 5/9F - 17.8

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

If you mean F, then Multiply both sides by  9/5

9/5 * C = F - 32

9/5  * C + 32 = F

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

A quick way to do this is to multiply by 2 and add 32

F = 2*C + 30

My wife, an American, always had to do this when she heard the daily temperatures in Canada.

first multiply both sides by 9/5 to get:

9/5C= F -32

Add 32 to both sides and transpose to get:

F=9/5C + 32

these are the formulas to translate between Fahrenheit and Celsius temperatures

Fahrenheit and Celsius meet at - 40 degrees

that is - 40 Fahrenheit = - 40 Celsius    

So alternitive formulas for the conversations can be written:

F=9/5 (C+40) - 40

C=5/9 (F+40) - 40

Answer:

Fifteen is a factor of the number because both 3 and 5 are prime factors.

Step-by-step explanation:

The computation is shown below:

The cube of 2 is

= 2^3

= 8

The square of 3 is

= 3^2

= 9

Now if we multiplied the 3 digits that it would be

= 8 × 9 × 5

= 360

As we know that the 15 is a factor of 360

Therefore the first option is correct

i.e.

Fifteen is a factor of the number because both 3 and 5 are prime factors.

And all the other options are incorrect

Answer:

15 and 35

Step-by-step explanation:

Answer:

250 pennies

Step-by-step explanation:

50 x 8 = 250

Answer:

18 white flowers

Step-by-step explanation:

We are given ratio:

Red : White

2 : 3

If Sally used 12 red flowers, how many white flowers will she use?

Let the number of white flowers Sally uses be represented by x

This is calculated as:

2/3 = 12/x

Cross Multiply

2 × x = 3 × 12

x = 3 × 12/2

x = 18 white flowers

Therefore, if Sally used 12 red flowers, the number of white flowers will she use is 18 white flowers.

Answer: 14 + x

Step-by-step explanation:

The number 14 is given. The number being added to 14 is unknown. Thus, we can assign it a variable. I have chosen x. Add x (or any variable representing a number) to 14, for the expression 14 + x.

Answer:

the number that you divide by is called the dividend and the number which the dividend is being divided by is the divisor.

Answer:

[tex]\sqrt{30}+ 3\sqrt{10}[/tex]

Step-by-step explanation:

[tex]\sqrt{90}=\sqrt{9}*\sqrt{10} =3\sqrt{10} \\\\\\\sqrt{30}+ 3\sqrt{10}[/tex]

Answer:

500

Step-by-step explanation:

Rate at which first ticket printer works is 450/9 = 50 tickets per minute

Speed of second ticket printer is twice than that of the first.

So, speed of second printer is 100 tickets per minute.

In 5 minutes,second printer made 500 tickets

Answer:

C. [tex]\frac{f(b)-f(1)}{b-1}=20[/tex]

General Formulas and Concepts:

Calculus

Step-by-step explanation:

Step 1: Define

[tex]f(x)=e^{2x}[/tex]

f'(c) = 20

Interval [1, b]

Step 2: Check/Identify

Function [1, b] is continuous.

Derivative [1, b] is continuous.

∴ There exists a c∈[1, b] such that [tex]f'(c)=\frac{f(b)-f(a)}{b-a}[/tex]

Step 3: Mean Value Theorem

And we have our final answer!

Answer:

$41.09 (as of 2020)

Step-by-step explanation:

i took the test

Answer:

An=A1+(n-1)d

A1 is first term, An is nth term, n is number of term, and d is common difference

therefore

A4=35, A1= -17

A4=A1+(4-1)d

35= -17+3d

35+17=3d

52=3d

52/3=3d/3

14=d

common diffrence(d)=14

An= -17+(n-1)14

An= -17+14n-14

An= -31+14n

An= 14n-31

A14 term, means n=14

From An=A1+(n-1)d

A14= -17+(14-1)14

= -17+(13×14)

= -17+182

= 165.

Therfore, the 14th term is 165.

2. A sequence has a CR of 4/5 and its eighth term (a8) is (393216/3125). What is its general equation? Its 3rd term?

solution

common ratio(r)=4/5

eighth term(G8)=393216/3125

From Gn= G1r^(n-1)

G8 means n=8

G8=G1r^(n-1)

393216/3125=G1(4/5)^(8-1)

393216/3125=G1(4/5)^7

G1=(393216/3125)/(4/5)^7

G1=600

The first term is given by G1=600

The General equation is given by

The General equation is given by Gn= 600(4/5)^(n-1)

3rd term (G3)

G3= G1(4/5)^(3-1) where n=3,

=600(4/5)^2

=600(16/25)

=384

Therefore, the 3rd term is given by G3= 384.

I have made some Corrections i messed up somewhere.

Answer:

b

Step-by-step explanation:

The distance is 1,750.0 miles if a Boeing 737 airplane travels about 500 miles per hour option (D) is correct.

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

It is given that:

The function d(t) = 500t represents the number of miles traveled in t hours.

Plug t = 3.5 hours in the equation of the function.

d(3.5) = 500(3.5)

d(3.5) = 1,750.0 miles

Thus, the distance is 1,750.0 miles if a Boeing 737 airplane travels about 500 miles per hour option (D) is correct.

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Answer:

What do I help you with?

Step-by-step explanation:

It's the second one.

Brainliest please!

Answer:

y=3x

Step-by-step explanation:

Answer:

Step-by-step explanation:

(x + 3)(2x + 1)

(2x + 3 )(3x + 2)

(x - 3)(2x + 3)