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
hoa [83]
3 years ago
10

Can someone help me please

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0

Answer:

n = -1

Step-by-step explanation:

n^2 + 5n + 1 = 3n

N^2 +2n +1 = 0       (subtract 3n from both sides)

(n+1)(n+1) = 0   (factor

n+1 =0; n= -1

n+1 = 0  ; n=-1

You might be interested in
Find the slope of the line.<br> 9x+y=9
Serggg [28]

Answer: -9/1

Step-by-step explanation: you want to get x and y on opposite sides so you subtract 9x and that gives you y=-9x+9 because the nine on the right side doesn’t have a negative in front of it so you know it’s positive. Your slope is whatever comes before the x so since it’s -9 that means it’s -9/1

6 0
3 years ago
Marcus loves baseball and wants to create a home plate for his house. Marcus needs to calculate the area of the home plate at th
Whitepunk [10]

Answer:

For the answer to the question above,  first you must find the area of the rectangle, which is 3 × 6 = 18 inches squared. Then, you find the area of the triangles. To find the area of the top triangle, you'd do base × height/2 (5 × 6)/2 = 15 inches squared. The triangle on the left would be (4 × 3)/2 which is 6 inches squared. After you've added up all of the values, you get (18 + 15 + 6) = 39 inches squared

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve the quadratic equation 3x^2+x-5=0
irinina [24]
-1 <span>± </span><span><span>√61 / 6. Negative 1, plus or minus square root of 61 divide by 6</span></span>
5 0
4 years ago
An unfair coin has a probability of coming up heads of 0.65. The coin is flipped 50 times. What is the probability it will come
Lady bird [3.3K]

Answer: the probability it will come up heads 25 or fewer times is 0.019

Step-by-step explanation:

Given that;

n = 50

p = 0.65

so, q = 1 - p = 0.35

np = 50 × 0.65 = 32.5 ≥ 10

nq = 50 × 0.35 = 17.5 ≥ 10

so, we need to use Normal Approximation for the Binomial Distribution

μ = np = 50 × 0.65 = 32.5

σ = √(npq) = √( 50 × 0.65 × 0.35 ) = 3.3726

now, the probability that it will come up heads 25 or few times will be;

⇒ P( x≤25)

{using continuity correction}

⇒ P[ z < (25.5 - 32.5)/3.3726 ]

⇒ P[ z < -2.0755 ]

using z-table

= 0.01923 ≈ 0.019  { 3 decimal places}

Therefore the probability it will come up heads 25 or fewer times is 0.019

4 0
3 years ago
Patricia can drive 36 kilometers for every 3 liters of gas she puts in her car
Anna35 [415]

Answer:

Patricia will run 132 kilometers with 11 liters of gas.

Step-by-step explanation:

The given table is representing the distance driven by Patricia for every liter of gas she puts in her car.

With 3 liters of gas she drives 36 kilometers.

This means in one liter of gas distance covered by the car = \frac{36}{3}=12 kilometers.

Similarly if the car runs 48 kilometers in 4 liters of gas then per liter distance covered by the gas will be = \frac{48}{4}=12 kilometers

Now with 11 liters of gas distance covered by the car will be = 11×12

= 132 kilometers

Therefore, with 11 liters of gas Patricia can run 132 kilometers.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Jim drives his children to their sports activities outside of school. When he drives his son to baseball practice, it is a 6-km
    6·2 answers
  • Together, Tim and Tom have $2.40. Tim has three times as much as Tom. How much does each have?
    14·1 answer
  • What is 4/50 as a decimal?
    15·1 answer
  • Which function(s) are also one-to-one?<br> the mapping diagram<br> the set of ordered pairs<br> DONE
    11·1 answer
  • Simplify the expression<br> -4x – 7+3 – 8x
    5·2 answers
  • Hi! my problem is: 6 x + 5 ≤ 11
    12·2 answers
  • Match the equation with its corresponding solution for x. 4x+7=35 4+x+2-2x=5 9-x/5=3 50=7x-6 6=1/3 x+5 2(3x+5)=22
    5·1 answer
  • Buying rental property is an investment option that carries a higher risk than some other options. However, the returns can be g
    11·1 answer
  • Determine x to two decimal places.<br>*PICTURE ATTACHED*<br>*TRIGONOMETRY*​
    9·1 answer
  • Evaluate the function at each specified value of the independent variable and simplify. (If an answer is undefined, enter UNDEFI
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!