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
Semenov [28]
3 years ago
9

Answer n.8 for me pls

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
5 0

Answer:

Step-by-step explanation:

(13)2−(2x+7)=0

19x2−2x−7=0

9(19x2−2x−7)=9(0)

x2−18x−63=0

(x−21)(x+3)=0

Therefore, the value of x are

x - 21 = 0 and x + 3 = 0

x = 21 x = -3

You might be interested in
Complete the statement. Round to the nearest hundredth if necessary.<br><br> 6 lb = *blank* oz
skad [1K]

Answer:

3 oz

Step-by-step explanation:

You have to divide 6 by 2 and you'll get the answer.

3 0
2 years ago
A parabola has a vertex at (0,0). The focus of the parabola is located at (4,0). What is the equation of the directrix? x=−4 y=−
rewona [7]

Answer:

Step-by-step explanation:

The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.

The vertex is halfway between focus and directrix. Directrix: x = -4

7 0
2 years ago
Read 2 more answers
Can someone help me with this please
Firdavs [7]

Answer:

D

Step-by-step explanation:

A function input can only have ONE output value

so the number 5 can't output two different numbers

6 0
2 years ago
Kylie starts with $145 in her piggy bank. Each month she adds $20.
ella [17]
2. an=20+an−1 and a1=145

she starts with 145 so a1=145 and then adds 20 every month: an=20+an−1
3 0
3 years ago
Read 2 more answers
Which equation could represent “the total cost of apples at the store that sell for $1.75 per pound” where C is the total cost a
melomori [17]

C represents the total cost of the apples.

p represents the pounds of apples.

Cost is the function of the pounds of apple sold. "p" is the independent function and "C" is the dependent function.

The total cost of apples at the store is $ 1.75 per pound.

So, the cost equation is represented by C (p) = 1.75 p , meaning that total cost is the function of the apples sold.

8 0
3 years ago
Other questions:
  • The mathematics department at a community college collected data for the number of students enrolled in 40 math classes over the
    15·1 answer
  • Bubble wrap sells in sheets, and each sheet has 1 million individual spherical bubbles, each with a diameter of 0.01 m. What is
    10·1 answer
  • Does 4 1/2 times 2 3/4 equal 11 11/48?
    15·2 answers
  • Solve systems of equations for x + y, please!! -5x + 3y = 2 -5x - 5y = -30
    6·1 answer
  • Ticket Prices for a Science museum are $18 for adults and $12 for students. If $162 is collected from a group of 12 people, How
    12·1 answer
  • A fruitseller bought 50 kg of fruits.He sold 30 kg of fruits for the cost price of 35 kg of fruits and he sold the remaining qua
    5·2 answers
  • What is the value of the variable? 3(x- 2)=15
    14·1 answer
  • 8. A rain barrel collected 75 gallons of water. Water leaked
    13·1 answer
  • Plz help<br> this is also timed and sorry that the screen looks like this:(
    6·2 answers
  • The formula for distance traveled is d = rt, where r is rate and 1 is time. What will be the value for d when an airplane flies
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!