Mathematics College

3xy - 4y when y =2 and x =5​

Answers

Answer 1
Basically plug in 2 where y is and 5 where X is
3(5)(2) - 4(2) , the parentheses are there to multiply
30-8
22
Answer 2

Answer:

22

Step-by-step explanation:

3xy - 4y When Y =2 And X =5

Related Questions

pls help i cant find the answer at all

Answers

AC = AB
4x + 8 = 7x - 4
8 + 4 = 7x - 4x
12 = 3x
x = 4

Find the simple interest you are investing $200 with a 5.2% interest rate of 3 years

Answers

Answer:

Step-by-step explanation:

Simple interest is

I=Prt, where I= interest, P=principle (initial value), r=interest rate, t=time

I=200(0.052)3

I=$31.20

Answer:

3,120

Step-by-step explanation:

Simple Interest= PRT / 100

= 200*5.2*3

= 1,040*3

= 3,120

Hope it is useful

need help with this problem ​

Answers

Answer:

 h(x) =  -x² + 11 x + 2

Step-by-step explanation:

Explanation:-

Given that the functions are  

                                            f(x) = 2 x² - 5x -3

                                            g(x) = x² + 6x -1

               h(x)  = g(x) - f(x)

                      = x² + 6x -1 - (2 x² - 5x -3)

                     = - x² + 6 x +5x -1+3

                    = -x² + 11 x + 2

            h(x) =  -x² + 11 x + 2

Final answer:-

h(x) =  -x² + 11 x + 2

                             

An article describes a study in which a new type of ointment was applied to forearms of volunteers to study the rates of absorption into the skin. Eight locations on the forearm were designated for ointment application. The new ointment was applied to five locations, and a control was applied to the other 3. How many different choices were there for the five locations to apply the new ointment

Answers

Answer:

There were 56 different choices for the five locations to apply the new ointment.

Step-by-step explanation:

The order of the locations in which the new ointment was applied is not important. So we use the combinations formula to solve this question.

Combinations formula:

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

How many different choices were there for the five locations to apply the new ointment

Five locations from a set of 8. So

[tex]C_{8,5} = \frac{8!}{5!(8-5)!} = 56[/tex]

There were 56 different choices for the five locations to apply the new ointment.

Help help help help help

Answers

Number 1 is 2.5, hope this helps a bit!

Answer: A= 2.5

              B= 12.9

              C= 12

              D= 3 (the 3 is a whole number not added to the fraction.)

              E= 4

5.
There are 5,000 tickets available for a concert. The percent of available tickets belonging to
each type of ticket is shown in the circle graph.
Ticket Types
Platinum
2%
Club
8%
Floor
16%
Upper
level
44%
Lower
level
30%
What total number of tickets is available at the club, platinum, and floor levels?

Answers

Answer:

The answer is 1,300 tickets.

Step-by-step explanation:

If you add 2%+8%+16%= 26%  26% of 5,000 is 1,300.

Answer:

1300

Step-by-step explanation:

platinum: 2%+club: 8%+ floor: 16%=26%

[tex]\frac{26}{100}[/tex]×[tex]\frac{5000}{1}[/tex] =1300

             

If you help I will give you brainliest

Answers

9514 1404 393

Answer:

  5 miles

Step-by-step explanation:

Time/speed/distance problems can be worked a number of ways. Here, we want to know the distance walked. We know the total time and the total distance and the two different speeds. So, we can use a variable to represent the value we want to know: w = distance walked (in miles).

The total time is 9:00 -6:50 = 2:10 = 2 1/6 hours = 13/6 hours.

The total time is the sum of times for the two parts of the trip: walking and riding.

  walking time = walking distance/walking speed

  = w/3

  riding time = riding distance/riding speed

  = (20-w)/30

The total time is that given above:

  w/3 +(20-w)/30 = 13/6

  10w +(20 -w) = 65 . . . . . . . . multiply by 30

  9w = 45 . . . . . . . . . . . . subtract 20, collect terms

  w = 5 . . . . . . . . . . . divide by 9

The girl walked 5 miles.

Find the value of X. Round to the nearest tenth

Answers

9514 1404 393

Answer:

  88.2

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relevant relation ...

  Tan = Opposite/Adjacent

  tan(10°) = x/500

  x = 500·tan(10°)

  x  ≈ 88.2 . . . . units

_____

If you move the "500" dimension to the top of the figure, you see it is adjacent to the given angle, and the value x is opposite.

Look at the street map. What street is parallel to Red Road? A. Union Street B. Green Street C. Blue Street D. Polk Street
i have 3 mins PLZ HELLPPPP

Answers

I'm pretty sure it would be

B) Green Street

Since Red Road appears to be vertical.

HELP PLEASEEEEE PLEASE HELP

Answers

Answer:

What do you need help with?

Step-by-step explanation:

Triangle RST has vertices R(-3,2), S(0,-5),and T(4,5).When translated R’ has coordinates (4, 1). Find the coordinates of S’ and T’.

Answers

C bc I just did dis text

Solve.

5t ≤ –15


a. t ≤ 3


b. t ≥ 3


c. t ≤ –3


d. t ≥ –3

Answers

Answer:

c. t ≤ –3

Step-by-step explanation:

I gave away 15 pencils in math. Now I have less than 37 left. How many did I have before I gave any away?

Answers

Answer:

less than 52 or  < 52

Step-by-step explanation:

x - 15 < 37

  +15   +15

x < 52

Pls help I need this and I don’t get it

Answers

Answer:

C.

Step-by-step explanation:

Hi there!

To find the answer to this, plug the number values in for n and then solve.

For the answer to be correct, the sum has to be less than 26.

Answers B and D both have numbers that would be equal to 26, so they aren’t right.

Answer A has numbers that would go over 26.

Every number in C can be added to 15 and the sum would be less than 26.

I hope this helps!

Which rule describes the composition of transformations that maps ΔABC to ΔA"B'C"?

Answers

Answer:

The Answer is A or the first one, NOT C. C is wrong.

Step-by-step explanation:

The transformations that map ΔABC to ΔA"B"C" will be reflection cross x-axis and translation of (x - 6, y - 2). Then the correct option is B.

What is a transformation of a shape?

A point, line, or numerical figure can be changed over in one of four ways, and each affects the item's design as well as position. Picture, after interpretation, alludes to the article's definitive association and situation. Not long before the alludes to the material's underlying condition.

The interpretation doesn't change the shape and size of the calculation. However, changes the area.

The reflection doesn't change the shape and size of the math. However, flipped the picture.

The changes that map ΔABC to ΔA"B"C" will be reflection cross x-pivot and interpretation of (x - 6, y - 2). Then, at that point, the right choice is B.

More about the transformation of the shape link is given below.

https://brainly.com/question/27224339

#SPJ2

The complete question is given below.

21 − 3 ) ÷ 32 =
72 × ( 6 ÷ 3 ) =
17 + 15 ÷ 3 − 24 =
( 8 + 56 )÷ 4 − 32 =

Answers

1. 0.5625
2. 144
3. -2
4. -16

does anyone know the answer to this.

Answers

Answer:

D

PLZ MARK AS BRAINLIEST

Step-by-step explanation:

FIRST STEP:

4*3 =12

6.5*3 =19.5

SECOND STEP:

21*12*19.5 =4914

Answer:

D

Step-by-step explanation:

i solved it

5% of what is 5 please help it's due today ​

Answers

Five percent of 5 is 100 because move the decimal two places to the left .05 and 5 divided by .05 is 100



HELP ASAP PLEASE!



The net for a triangular prism is shown below. What is the total surface area of the prism? 6.9 cm 8 cm 10 cm 8 cm 0 55.2 square centimeters 0 295.2 square centimeters 0 240 square centimeters 0 552 square centimeters​

Answers

Answer:

Step-by-step explanation:

The area of each rectangle is Length x width

Therefore Area of rectagle is 8cm x 10 cm=

A= 80 cm 2

There are three rectangles with the same measure so multiply the area by 3

80cm squared x 3= 240 cm 2

Now find the are of the triangle:

A- 1/2 x base x height

Base = 8cm

Height = 6.9 cm

A= (1/2) (8cm) (6.9cm)

A= (1/2) (55.2 cm squared)

A= 27.6 cm squared

Since there are two triangle faces with the same dimensions take the area and multiply it by 2

27.6 cm squared times 2 = 55/2 cm squared

Now add up the area of the rectangles and the area of the triangles.

Rectangles= 240 cm squared

Triangles 55.2 cm squared

240cm sq + 55.2 cm sq.= 295.2 cm squared

Find the Area Of This Figure.

Answers

24 in
to find area of rectangle L x W
it comes out to be 18
to find area of trapezoid 1/2 BxH
so it comeS out to be 6
add them together and get 24

Answer:

42in

Step-by-step explanation:

First divide up the shape.

The bottom will cut off to form a 6x3 rectangle which will have an area of 18in.  Next is the top portion which is a trapezoid. You can figure out the area two ways. You can divide it further into two triangles and a rectangle. Or you can use the trapezoid formula. In this case I feel like dividing it. So since the top is 2 inches the bases of the two side triangles must be 2 due to the bottom base of the whole shape being 6. (1/2*2*6)*2 = 12in. Lastly the center rectangle is 2*6 (got 6 from 9-3) which is also 12. So the top half added together 12+12 equals 24in. When adding both top and bottom portions (18+24) you get 42in.

If an organism has 35% of cytosines, how
many adenines will it have?
35%
15%
25%

Answers

Answer:

Unknown

Step-by-step explanation:

Since you have 35 C, you will have 35 G. Without knowing the number of thymine, the number of adenine is unknown .

That is all the information you can get from this. Just because there are 35 C and G, there doesn't have to be an equal number of A and T

Answer: 15%

Step-by-step explanation: I just did it

Sierra has a recipe she wants to make. She has to use eggs and sticks of butter. The ratio for these ingredients is 12 to 4 to make 4 batches. What will the equivalent ratio be if she wants to make 2 batches?

Answers

2 batches is half as much as 4 batches...so cut all the ingredients in half. You would need 6 eggs and 2 sticks of butter (a 6 to 2 ratio)

Find the measure of angle ADE

Answers

Answer:

17x + 22

Step-by-step explanation:

They are supplementary angles...

Which means...

Angle ADE = (4x+15) + (13x+7)

= 17x + 22

So...

Angle ADE = 17x + 22

Hope this helps :)

Let me know if there are any mistakes!!

A cylinder has a base diameter of 6 centimeters and a height of 15 centimeters. What is its volume in cubic centimeters, to the nearest tenths place?



Please help

Answers

Step-by-step explanation:

V

≈

424.12

cm³

d

Diameter

cm

h

Height

cm

What is the slope and y-intercept of the line y - 2x = 8

Answers

Answer:

Slope is 2x and y-intercept is 8

Step-by-step explanation:

First you have to get y all by itself on the left side of the equal sign. To do that, you must add 2x on both sides. You will get: y=2x+8.

Answer:

Slope= 2

Y-intercept= (0,8)

At $.54 for a dozen oranges, what will 7 1/2 dozen cost?

Answers

Answer: $4.05
Explanation: you multiply 7 1/2 time .54

The source or origin of a word is called its?​

Answers

Answer:

Etymology

the study of the origin of words and the way in which their meanings have changed throughout history.

Step-by-step explanation:

Can someone please help

Answers

Step-by-step explanation:

step 1. 6x - 30 = 2(x + 33)

step 2. 6x - 30 = 2x + 66

step 3. 4x = 96

step 4. x = 24.

step 5. mNMO = x + 33 = 24 + 33 = 57°.

5 is what percent of 250?

Answers

Answer:

the answer will be 2

Jeremy is trying to explain why a triangle with side lengths 35, 30, 60 is not a right triangle. His explanation is shown below.

Step 1: 35 squared + 30 squared question mark equals 60 squared
Step 2: (35 + 30) squared question mark equals 60 squared
Step 3: 65 squared question mark equals 60 squared
Step 4: 4,225 not-equals 3,600

Which best describes Jeremy’s explanation?
Jeremy’s explanation is accurate.
Jeremy’s explanation is inaccurate. He wrote the leg lengths in the incorrect order in step 1.
Jeremy’s explanation is inaccurate. He incorrectly combined terms in step 2.
Jeremy’s explanation is inaccurate. He multiplied incorrectly in step 4.

Answers

Answer:

i would say a is the correct answer

Answer:

He incorrectly combined terms in step 2

Step-by-step explanation:

In Step 2, you can't combine 30² + 35² into (30 + 35)² so the answer is "He incorrectly combined terms in step 2".

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