1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
creativ13 [48]
2 years ago
8

What is -2(-y) in expanded form ​

Mathematics
1 answer:
damaskus [11]2 years ago
4 0

Answer:

2y

Step-by-step explanation:

(-2)(-y) = (-1)(2)(-1)(y) = (-1)^2\ccdot  2y = 2y

You might be interested in
1. Flight 202's arrival time is normally distributed with a mean arrival time of 4:30
Bezzdna [24]

Answer:

Step-by-step explanation:

1) Let the random time variable, X = 45min; mean, ∪ = 30min; standard deviation, α = 15min

By comparing P(0 ≤ Z ≤ 30)

P(Z ≤ X - ∪/α) = P(Z ≤ 45 - 30/15) = P( Z ≤ 1)

Using Table

P(0 ≤ Z ≤ 1) = 0.3413

P(Z > 1) = (0.5 - 0.3413) = 0.1537

∴ P(Z > 45) = 0.1537

2)  By compering (0 ≤ Z ≤ 15) ( that is 4:15pm)

P(Z ≤ 15 - 30/15) = P(Z ≤ -1)

Using Table

P(-1 ≤ Z ≤ 0) = 0.3413

P(Z < 1) = (0.5 - 0.3413) = 0.1587

∴ P(Z < 15) = 0.1587

3) By comparing P(0 ≤ Z ≤ 60) (that is for 5:00pm)

P(Z ≤ 60 - 30/15) = P(Z ≤ 2)

Using Table

P(0 ≤ Z ≤ 1) = 0.4772

P(Z > 1) = (0.5 - 0.4772) = 0.0228

∴ P(Z > 60) = 0.0228

6 0
3 years ago
I NEED HELP!! ASAP!! 3x + -7 = 42
Dmitrij [34]

Answer:

16 1/3

Step-by-step explanation:

add 7 to 42 to get 49, then divide by 3 to get 16 1/3. :)

7 0
3 years ago
Is 97 an irrational number?
user100 [1]

Answer:

<em>No </em><em>9</em><em>7</em><em> </em><em>is </em><em>not </em><em>an </em><em>irrational </em><em>number </em>

Step-by-step explanation:

Be happy

7 0
2 years ago
Read 2 more answers
At a local clothing store, Morgan finds they are having a storewide 40% off sale. She also has a $15 coupon which applies to her
LuckyWell [14K]

Morgan should first take the 40% off then apply the $15 coupon

Lets say her total was $150.

If you take the 40% off first, you get $90

150 * .6 = 90 (since you are taking off 40% you are still paying the rest of the 60% so you can just save extra steps by multiplying by .6 and not .4)

Now you subtract 15 from that value.

90 - 15 = 75 If Morgan takes the 40% off first and then applies the $15 dollar coupon, she has to pay $75.

If she applies the $15 coupon first, her total before the 40% is $135

150 - 15 = 135

The total will come out to be $81

$135 * .6 = 81

If Morgan takes the discount first before applying the coupon she has to pay less and saves the most money.

5 0
3 years ago
Claire jogs 6 miles per hour and Megan jogs 5 miles per hour. they start together at their campsite and jog to an outpost 18 mil
horrorfan [7]

Answer:

16.364 miles

Step-by-step explanation:

Speed of Claire = 6 miles per hour

Speed of Megan= 5 miles per hour

Distance from camp site to out post = 18 miles

Time for Claire to travel=18/6= 3 hours

Time for Megan to travel = 18/5 = 3.6 hours

The time they meet will be equal

Claire distance= 18 + x

Megan distance = 18-x

Claire time =( 18+x)/6

Megan Tim =( 18-x)/5

(18+x)/6 =(18-x)/5

5(18+x)= 6(18-x)

90 +5x = 108-6x

11x=18

X=18/11

X=1.636 Miles

So the distance from the Outpost to where they meet = 18-1.636

= 16.364 miles

6 0
3 years ago
Other questions:
  • In a sale there is 30% off a pair of jeans. The sale price is £56. What was the price before the sale ?
    10·1 answer
  • On a family trip, the baristas drive 110 miles in 2 hours. At this rate, how far would they drive in 7 hours
    5·1 answer
  • The shortest sides of two similar polygons have lengths in the ratio 2:5, the perimeter of the smaller polygon is 20, the perime
    5·1 answer
  • What are the roots for x?
    5·1 answer
  • 1. The measure of angle AOB is 56 degrees. What is the measure of angle ACB?
    15·1 answer
  • AT-Mobile advertises cut-rate phone service for $9.00 a
    11·1 answer
  • Tell me the Definition of each Word listed (math)
    11·1 answer
  • The graph below shows a line of best fit for the number of workers needed for different construction projects.
    7·2 answers
  • 20a-18<br> 2: 42<br> 3: 17b+3<br> 4: 105
    13·1 answer
  • How many solutions does the system have? You can use the interactive graph below to find the answer. \begin{cases} y=x+1 \\\\ y=
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!