Mathematics Middle School

Evaluate the expression 2(5x -3y) if x = -1/2 and y = 1

Answers

Answer 1
the answer is -11!
once plugged in, the new equation would be 2(-2.5 -3)
this would equal 2(-5.5)
the final answer would be -11

Related Questions

what is 2 x 0
1
2
3
0

Answers

Answer:

0

Step-by-step explanation:

any number multiplied by 0 is always 0

0

Because anything multiplied by 0 is 0!

Find the area of the shaded region

308 centimeters squared


284 centimeters squared


272 centimeters squared


548 centimeters squared

Answers

548 centimeters squared
548 centimeters squared

Please Help me.
.
.
.
.
.

Answers

Answer:

D

Step-by-step explanation:

x^2+2x-5-(-3x^2-4x+1)

x^2+2x-5+3x^2+4x-1

4x^2+6x-6

Answer:

D

Step-by-step explanation:

f(x)-g(x)=x²+2x-5+3x²+4x-1  combine like terms

4x²+6x-6

can someone help me out (serious answers only)

Answers

Answer:

21.46

Step-by-step explanation:

we know that 10yd is the diameter of the unshaded circle. so we will use this to find out the area of the circle. if a diameter of a circle is 10yd, the area is about 78.54 (considering that pi=3.14) to find the area of the shaded region, we can pretend that the entire square is shaded, and then take the unshaded away. if the square was completley shaded, the answer would be 100. but there is a circle inside of the square unshaded, with a area of 78.54, so we need to solve for 100-78.54. this results in our final answer, 21.46

can someone help me out? :P (serious answers only)

Answers

188.93 should be the answer

A shirt has an original price of $19.75. If the shirt is marked 25% off and there is a 7.75% tax, how
much will Corey pay? Round to the nearest cent.

Answers

Answer: 4.90 im not 100 percent sure

Step-by-step explanation:

To find the actual discount, multiply the discount rate by the original amount 'x'. To find the sale price, subtract the actual discount from the original amount 'x' and equate this to given sale price.

$4.90 will be your price

If train A and train B, on a side-by-side roller coaster track, both leave the starting point at 9:00 A.M., at what time will they next leave the starting point together? pls can anyone answer this???


train A:every 8 minutes

train B: every 6 minutes

Answers

Answer:

answer 2

Step-by-step explanation:

Answer:

At 9:24 a.m.

Step-by-step explanation: Because if train A arrives every 8 minutes and train B arrives every 6 minutes then every 4 stops train B will meet A and every 3 stops they will see each other.

Athena was completing a puzzle picture by connecting ordered pairs of points. Her next point is described below:

X-coordinate (-1)

Which ordered pair could be Athena's next point? ASAP I NEED IT ASAP, YOU WILL GET 20 POINTS AND BRAINLEST

Answers

Answer:

put -1 on the graph

Step-by-step explanation:

Jasmine’s bike sold for$540. The store owner gave a discount of 30%. What was the new price? You may use decimals or use fractions to find your answer. Can anyone help??

Answers

Answer:

Ill help but give me a day

Step-by-step explanation:

a

What is x+67 when 67=r+8.483 and x=9?
Btw that kid is not me, its my friend, at least i think he is

Answers

Answer:

76

Step-by-step explanation:

x=9, therefore x+67 would be 9+67 which equals: 76

76 hope it helps !!

Find the angle for a ​

Answers

Answer:

69

Step-by-step explanation:

The answer is 69.

69+52=121

Of the 40 students in Mr. Clayman's music class, 30 sing in the
school choir. Express the part of the class that sings in the choir as
a fraction.
a. 2/5 b. 3/10 c. 30/100 d. 3/4

Answers

Answer:

d

Step-by-step explanation:

25% of 40 is 20. 30 is 3/4 of the way there

Answer:

D.

Step-by-step explanation:

if u simplify 30/40, you get 3/4.

30 divided by 10 is 3

40 divided by 10 is 4

so therefore the answer is 3/4

Tessa bought stock in a restaurant for $188.00. Her stock is now worth $240.64. What is the percentage increase of the value of Tessa's stock?

A) 28%
B) 22%
C) 21.36%
D) 78%

Answers

Answer:

B is the answer

Step-by-step explanation:

22 %

but im not sure

(240.64-188)/188=28%
The answer is A.

Help asap-----------------------------------------------

Answers

Answer:

84

Step-by-step explanation:

4x7x3 :D

(if im wrong please correct me)

84 I’m pretty sure I did this on a test

A submarine is searching for underwater features. It is accompanied by a small aircraft and an underwater robotic vehicle.

At one time the aircraft is 200 m above the surface, the submarine is 55 m below the surface, and the underwater robotic vehicle is 227 m below the surface.

What is the difference in height between the submarine and the aircraft?


What is the distance between the underwater robotic vehicle and the submarine?

Answers

Answer:

255m and 222m respectively

Step-by-step explanation:

sol:

given,

aircraft 200m

surface 0m

submarine -55m

underwater robotic vehicle -227m

•°•difference between submarine and the aircraft=255m

•°•difference between robotic vehicle and the submarine=222m

Answer:

282

Step-by-step explanation:

Simplify these expressions

Answers

Trust me the guy above is right
6b + (5b-2) = 11b-2

(20-2y) + 9y = 20+7y

(7a+15b) + (25-3b) = 7a + 12b + 25

can someone help me with this asap

Answers

Answer:

36.576

Step-by-step explanation:

help me the questions are the images

Answers

Answer:

starting from 1, going horizontally
1. 4.5
2. 5.4
3. 2.25
4. 24.96
5. 17.35
6. 12.48
7. 18.28
8. 7.38
9. 56.7
10. 0.06
11. 36.48
12. 218.4
13. 16.028
14. 9.39
15. 40.16
16. 37.86
17. 40.05
18. 30.275
19. 1.524
20. 0.64

Step-by-step explanation:

PLEASE CAN SOMEONE ANSWER THIS

y=8.2x+459=

Answers

Both ways to write it our
(Slowly takes off crocks) hmmmmm

im confused help ( i clicked one by mistake but just help me)

Answers

Answer:

graph 2

Step-by-step explanation:

The answer is Graph 2

the world’s longest river is the Nile in Africa, with a length of 6825km. this is about 1 5/8 times as long as the Mackenzie river, which is Canada’s longest river. how long is the Mackenzie river? the Mackenzie is abt 2 1/10 times as long as the Columbia river. how long is the Columbia?

Answers

Answer:

(1,080 mi) long

Step-by-step explanation:

The Mackenzie River is a river in the Canadian boreal forest. It is the longest river system in ... Basin size, 1,805,200 km2 (697,000 sq mi) ... The river's main stem is 1,738 kilometres (1,080 mi) long, flowing north-northwest from Great ... of the Mackenzie River is Thutade Lake, in the Northern Interior of British Columbia.

You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply?

3/9 = x/15

Answers

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3/9-(x/15)=0
x
Simplify ——
15

3 x
—— —— = 0
9 15

1
Simplify ——
3

1 x
—— —— = 0
3 15

... the answer is : x = 5
X = 5 is the answer

Write the equation of the vertical line that passes through ordered pair 2.

x=6
x=6

x= -8
x= -8

y=6
y=6

y= -8

Answers

Answer:

this is a table

y= (a times when y is negative)

X=(X is possitive)

Given AABC: ADEF, find x.

Answers

Answer:

14

Step-by-step explanation:


ANWSER: it’s 14 for sure

Step by step explanation;

What are the lengths of the sides
PLS HURRY

Answers

Answer:

b

Step-by-step explanation:

Here brainliest look arE the picture

Answers

Answer:

12p = 48

3rd option

Step-by-step explanation:

total photos =48

pages on website = 12

photos on each page = p

then,

p =48/12

that is

12p =48

Beatrice threw a stone one and seven fourteenths yards. Tilly threw a stone nine fourteenths of a yard. What is a reasonable estimate of the difference between their two throws?

1 yard
one and one half yards
2 yards
two and one half yards

Answers

Answer:

2 yards

Step-by-step explanation:

The answer is one yard because 1 and 7/14 minus 9/14 is 12/14 which rounds to one yard.

I need help on this question, I have the image

Answers

Answer:

168

Step-by-step explanation:

Answer:

Yubin can make 168 cookies.

Step-by-step explanation:

15 3/4 as a decimal is 15.75. 2 1/4 as a decimal is 2.25. 15.75 divided by 2.25 is 7. You would then do 7 times 24 because that's how many cookies 2.25 cups of flour makes, and you get 168. Your answer is 168 cookies.  

simplify by combining like terms: 3 1/9p + 5 - 1/3p

Answers

Answer:

5(5p+9)

-----------

9

Step-by-step explanation:

Answer:

[tex]7\frac{2}{3}[/tex]

Step-by-step explanation:

[tex]3\frac{1}{9}p+5-\frac{1}{3}p[/tex]

Put it into a different form to make it easier.

[tex]3\frac{1}{9}p-\frac{1}{3}p+5[/tex]

Add the fractions. We need to figure out the LCM to figure out the common denominator. The LCM is 9 in this case.

[tex]3\frac{1}{9}-\frac{3}{9} +5[/tex]

I like to convert into imroper fractions. This is optional though.

[tex]\frac{28}{9} -\frac{3}{9} +5[/tex]

[tex]\frac{24}{9} +5[/tex]

[tex]\frac{8}{3}+5[/tex]

Get a common denominator. The LCM is 3.

[tex]\frac{8}{3}+\frac{15}{3}[/tex]

[tex]\frac{23}{3}[/tex]

Make this fraction into a mixed number.

[tex]7\frac{2}{3}[/tex]

I hope this helps!

PLEASE ANSWER FAST

Edward’s recipe for salad uses a ratio of 2 1/4 cups of lettuce to 1/2 lb of tomatoes.
(a) (2 pts) Convert both the lettuce and tomatoes amounts to decimal equivalents.
(b) (3 pts) If you double the recipe, how much lettuce and tomatoes do you need.

Answers

Answer:

A. 2.25 and 0.5

B. 1 tomato

Answer:

Step-by-step explanation:

A. 2.25 and 0.5

B. 1 tomato

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