Mathematics Middle School

Evaluate the expressions when x=1.8 and y=4

1.) 3xy

2.) 7.5xy

3.) 1.4y + 5.9x

Answers

Answer 1

Answer:

1. 21.6

2. 54

3.16.22

Step-by-step explanation:

1. 3(1.8)(4)

2. 7.5(1.8)(4)

3. (1.4)(4) + (5.9)(1.8)

Answer 2
1. 3(1.8)(4) = 21.6

2. 7.5(1.8)(4) = 54

3. 1.4(4) + 5.9(1.8)
5.6 + 10.62 = 16.22

Related Questions

Which lines, if any, can you conclude are parallel given that m<1 + m<2= 8 ? Justify your conclusion with a theorem or postulate.

a. g || h, by the Converse of the Same-Side Interior Angles Theorem
b. g || h, by the Converse of the Alternate Interior Angles Theorem
c. j || k , by the Converse of the Alternate Interior Angles Theorem
d. j || k, by the Converse of the Same-Side Interior Angles Theorem

Answers

The is B. By the converse of the Alternate interior angles theorem

Solve the inequalities by graphing. Identify the graph that shows the following equations.
x + y < 1
x − y > 2

Answers

Answer:

It's the 4th graph on the 1st sheet

Step-by-step explanation:

I hope this can help you

The mayor knows the area needed for a flower garden in the park. She wants the base to be a certain length. How can she determine the necessary height to get the correct area of the flower garden? Explain.

Answers

Answer:

Answer:The formula for the area of a parallelogram is A = bh, and the formula for area of a triangle is A = 1/2bh. Since a triangle is half of the area of a parallelogram with the same base and height, the only difference in the formula is 1/2.

Step-by-step explanation:

Maria would determine the height by dividing the area of the garden by the base

From the question, she has the area and the base.

Also, the garden has the shape of a parallelogram

The area of a parallelogram is the product of the base and the height.

So, when the area is divided by the base, she gets the height

Read more about parallelograms at:

https://brainly.com/question/3050890

Can someone help me please?

Answers

Answer:

469 2/3 (Answer 3)

Answer:

It's c 469 2/3

Step-by-step explanation:

7045 ÷ 15 = 469.6666667, which is just 469 2/3

Select all ratios equivalent to 3:2.

Answers

Answer:

18:12, 12:8

Step-by-step explanation:

18:12 = 3 * 6:2 * 6

12:8 = 3 * 4:2 * 4

Answer: 18 : 1 2 , 12 : 8

A bookshop has some fiction and non books. 2/5 of the books are fiction books. Of these, 1/5 are mystery stories. 1/3 of the non fiction books are mystery stories too. What fraction of all the books in the shop are mystery books?

Answers

Answer:

1/3 of all of the books

Step-by-step explanation:

5/5 - (2/5 +1/5) =2/5

2/5(1/3) = 2/15 nonfiction mystery books

2/15 + 1/5 = mystery books

1/5 = 3/15

2/15 + 3/15 = 5/15

5/15 = 1/3

1/3 out of all the books

Help needed asap please

Answers

Answer:

I don't understand the language you used

No because thier ain’t enough

Help Me Pls Help Me Pls

Answers

Answer is b that b school has lower sat rate

What are the coordinates of POINT A?
A.)1,2
B.)-1,2
C.)2,1
D.)1,-2

Answers

The ANWSER is b i had this one before
The answer is B.)-1,2
Good luck!

Find the unit rate.
70 rooms on 5 floors
rooms per floor

Answers

Hi ;-)

70 rooms on 5 floors = 14 rooms per floor

70 : 5 = 14

Answer:

14 rooms per floor

Step-by-step explanation:

70 rooms on 5 floors

70/5=14 rooms per floor

Find the area of each parallelogram.

Answers

a = 6
b = 8

explanation

There are 20 students in the class. They break up into groups of 5 for an art project. Choose the equation that shows how many groups there are.
20 x 5 = ?
20 x 4 = ?
20 divided by 4 = ?
20 divided by 5 = ?

Answers

20 divided by 5 is the answer
20 x 5 is 100 20 x 4 is 80 and 20 divided by 4 is 5 and 20 divided by 5 is 2

Somebody help me with questions 10 and 11 I’ll appreciate!

Answers

Answer:

10. • crate=6 boxes

$95.94/6

=$15.99

$15.99 per box

• 1 box=20 tiles

$15.99/20

=$0.7995

$0.7995 per tile

Answer:

10. • crate=6 boxes

$95.94/6

=$15.99

$15.99 per box

• 1 box=20 tiles

$15.99/20

=$0.7995

$0.7995 per tile

Step-by-step explanation:

I WILL MARK AS BRAINLIEST! Write an Equation that represents the points in the table

Answers

Answer:

y = 3x + 5

Step-by-step explanation:

Based on the table, as x increases by 1, y increases by 3. Moreover, when x = 0, y = 5. Therefore, the slope is 3 and the y-intercept is (0, 5).

Substitute the information for the variables in the slope-intercept form equation.

y = mx + b

m = slopeb = y-intercept value

Answer:

y=3x +5

Step-by-step explanation:

......................

Help!
Farmer Doug has some pigs and chickens.
One day he counted 24 legs 7 heads in the barnyard.
How many of each animal did Farmer Doug Count? __

With Explanation, please!

Answers

The one about to answer is right sorry
There would be 5 pigs because 5 x 4 = 20 and that would be 5/7 pigs and then 4 legs/2 heads left over and chickens have 2 legs so 2 chickens and 5 pigs

Help me Guess just help please

Answers

you would try all becauseyou all try you are intilligent mare than other

Don’t guess you got this!

of the height of -6 feet to eat a snack (where 0 is ground level ) After that he climbed to a height of -3 feet . Express the total gain or loss of feet as a integer

Answers

Answer:

-9

Step-by-step explanation:

5(x+)+11=25-3x add workk

Answers

Answer:   calculdora

5 (x +) + 11 = 25-3x adicionar trabalho

Step-by-step explana

747475828584$4)$. Shdhdijdjdndjdjdjdjdjsieje

What is the value of x + y?

83,349 = 7x • 3y

Answers

Answer:

1984.5

Step-by-step explanation:

83349=21xy

xy=83349/21

xy=3969

3969/2

x+y=1984.5

1984.5 should be the answer. if i’m wrong i’m sorry

Which one of these is a square number?

15
39
81
132

Answers

Answer:

81

Step-by-step explanation:

I WILL MARK AS BRAINLIEST! Simplify

Answers

Answer:

a) -98

b) -12

c) -105

d) -46

a.) -98
b.) -12
c.) -105
d.) -46
I promise I did not copy.

Find the unit rate.
20 seats in 4 rows =
seats per row

Answers

Answer:

8 should be the answer

Step-by-step explanation:

5 in each row because 20 divided by 4 is 5

I WILL MARK BRAINLIEST! Solve for X

Answers

Answer:

Step-by-step explanation:

You are to assume in both problems that the two triangles are similar. That is a very dangerous assumption -- especially in later math classes. But in this case, there is no other way to do the problem. The two sets of triangles look like they are proportional.  So set up two ratios that are = to each other

On the left

long side small triange / long side large triangle = base small triangle / base large triangle

On the right

hypotenuse/longest leg = hypotenuse / longest leg.

Problem A

Set up the similar Proportion

5/40 = x/20                Cross Multiply

40x = 20*5

40x = 100                   Divide by 40

x = 100/40

x = 2.5

Problem B

Again set up the similar triangle proportion

15/10 = x/2                  Multiply by 2

15*2/10 = x              

3 = x

for the first one x=2.5
for the second one x=3

Answer the question in the pic pls. Don’t answer unless you are sure if your answer

Answers

Answer:

its 20

Step-by-step explanation:

20 because 10+10=20. it’s a pattern happening. in each circle you are double the first number and then doubling the second number to get your final answer.

Is –862 ÷ 1 positive or negative?

Answers

Answer:

Negative

Step-by-step explanation:

Answer:

It's negative

Step-by-step explanation:

–862 ÷ 1

= -862

and even remember that if a negative number is divided by positive the answer will be always negative

same applies here

3/2 = 5d - 1/2

solve for d

​

Answers

Answer:

D = 2/5 or 0.4

Step-by-step explanation:

3/2 = 5d - 1/2

move the terms

3/2 - 5d = -1/2

calculate the difference

-5d = -2

divide both sides by -5

2 = 2/5

Answer

3/2 = 5d - 1/2
+1/2 +1/2
2=5d
divide both sides by 5

D = 2/5

find the exact coordinates of X on segment JK that is 1/3 the distance from j to k. J (-1,4)​ K(5,-3)

Answers

Answer:

ee

Step-by-step explanation:

e

... fhhhriirnfiijrifjbfufjfbfijffjdudj

I WILL MARK AS BRAINLIEST! Graph each coordinate pair on the graph and then indicate which quadrant or axis the point lies on.

Answers

Answer:

3 quadrant

3 quadrant

2 quadrant

2 quadrant

1 quadrant

4 quadrant

4 quadrant

3 quadrant

3 quadrant
3 quadrant
2 quadrant
2 quadrant
1 quadrant
4 quadrant
4 quadrant
3 quadrant

Please refrain from answering just for the points

Answers

the answer is even number.

it’s even i can’t rly explain why but they are even sorry can’t rly help

Help please
......................

Answers

1. 35x + 0.15y
=3500x + 15y [multiplying the equation by 100]
= 700x + 3y [dividing the equation by 5]

2. Let x be an even integer
x + (x+2) + (x+2+2)
x+x+2+x+4
3x+6

3. 1/5*(r+7) - 9s
(r+7)/5 - 9s

4. x=cows
y= goats + sheep

x= (y+140)/2

  35x + 0.15y

=3500x + 15y

= 700x + 3y

2. x + (x+2) + (x+2+2)  ----> x+x+2+x+4 ----->3x+6

3. 1/5*(r+7) - 9s -----> (r+7)/5 - 9s

4. x=cows and y= sheep+goats

Answer/x= (y+140)/2

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