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
DedPeter [7]
2 years ago
14

(7y2 - 3y)-(4y2 + 2y'- 2)

Mathematics
1 answer:
nexus9112 [7]2 years ago
8 0

Answer:

(4y-2)-(2y+0)

Step-by-step explanation:

you add up all the variables

7y+3y and -4y+2

You might be interested in
9. An express delivery service advertises next-day delivery of any parcel it receives before 3PM. The actual success rate is 90%
Juli2301 [7.4K]

Answer:

a) P(X =16 ) = 0.1853

b) P(X \leq 12) = 0.0684

Step-by-step explanation:

GIVEN DATA:

n = 16

p = 0.90

from relation given probabllity can be solve

P(X) = ^nC_x * p^x * ( 1 - p)^{n-x}

a)

P(X =16 ) = ^{16}C_{16} * 0.90^x * ( 1 - 0.90)^{16-16}

P(X =16 ) = 0.1853

b) P(X \leq 12) = 1 - P(X \geq 13)

= 1 - [ P(X = 13) +P(X = 14) +P(X = 15) +P(X = 16) ]

= 1 - [ ^{16}C_{13} * 0.90^{13} * (1 - 0.90)^3 +^{16}C_{14} * 0.90^{14} * (1 - 0.90)^2 +^{16}C_{15} * 0.90^{15} * (1 - 0.90)^1 +^{16}C_{16} * 0.90^{16} * (1 - 0.90)^0 ]

= 0.0684

4 0
3 years ago
A dog and a cat are 200 meters apart when they see each other. The dog can run at a speed of 30 meter per second, while the cat
LenKa [72]

Answer:

They'll meet after 200 meters , if they simultaneously start running towards each other.

Step-by-step explanation:

Let x =distance travelled by dog and 200-x be the distance travelled by cat. Inorder to meet, the sum of their travelled distances shall be equal to 200 meters as they are far apart by 200 meters.

Dog: Distance =Speed x time: x=30t

Cat: Distance = 200-x

=24t

The sum of their distance travelled shall be 200 meters: 30t+ 24t= 200;54t=200;t=200/54=3.7secs

So they will meet after 3.7 seconds

To check:

Distance travelled by dog :x=30(3.7)

=111.11 meters

Distance travelled by cat: 24t=24(3.7)

=88.89 meters

Therefore since they are travelling towards each other and their distance apart is 200 meters, after 3.7 seconds they will meet because dog travelled 111.11 meters and cat travelled 88.89 meters and they covered already 200 meters as the sum of 111.11+ 88.89

=200 meters

6 0
1 year ago
The length of a rectangle is 12cm and the area is 96cm what is the width
Paladinen [302]
The width is 8 cm . Because the rules to calculate the width that have length and area is take area divide the length . So you take 96 cm : 12 cm = 8 cm .
3 0
3 years ago
I bought a new hat for $32. What would be 5% sales tax?
vodka [1.7K]

Answer:

$1.60 for tax, $33.60 all together

Step-by-step explanation:

32 x .05 = 1.6

4 0
3 years ago
Read 2 more answers
Look at the equation 14n=98 work out the value of 14(n+1)
Allisa [31]

Answer:

The value of 14(n+1) is 112.

Step-by-step explanation:

14n=98

n=98/14

n=7

-------------

14(n+1)=14(7+1)=14(8)=112

5 0
2 years ago
Other questions:
  • Estimate the product of the expression below to the nearest whole number.
    7·1 answer
  • The quotient of -60 and a number x is 4
    14·1 answer
  • Let j = 32. What is the value of j + 12? A. 12 B. 20 C. 44 D. 50
    9·2 answers
  • The graph below shows the water level of a tank that is emptying over time.
    14·1 answer
  • Cartos saves aluminum cans to sell to the recycling center. He recently recycled 43 pounds of cars and received $23.65. How many
    12·1 answer
  • A medical office administers a survey, regarding patient satisfaction. Based
    6·1 answer
  • The prime factor decomposition of 2021 is 43 × 47. What is the value of 53 × 57 ?
    8·1 answer
  • Factorise fully<br> 15x-10
    7·1 answer
  • A 52-in TV measures 52 inches along its diagonal (corner to corner measure). If that TV is 33.6 inches high, how wide is it?
    8·2 answers
  • Solve the following system of equations.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!