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
Wewaii [24]
3 years ago
14

Find the axis of symmetry for this parabola: y=-5x^2-10x-13

Mathematics
1 answer:
Dmitry [639]3 years ago
6 0

Answer:

x=1

Step-by-step explanation:

1. Complete the square on the right side of the equation.

5 ( x − 1 )2 − 18

2. Use the vertex form,  y = a ( x − h ) 2 + k , to determine the values of  a ,  h , and  k . a= 5 h = 1 k = − 18

3. Since the value of  a  is positive, the parabola opens up.

Opens Up

4. Find the vertex  ( h , k ) . ( 1 , − 18 )

5. Find  p , the distance from the vertex to the focus.

1 /20

6. Find the focus.

7. ( 1 , − 359/ 20 )

8. Find the axis of symmetry by finding the line that passes through the vertex and the focus.

ANSWER: x = 1

You might be interested in
How to answer this question??? <br>thanks
vesna_86 [32]
\dfrac{2m}{5}+3=7(4m-3)\ \ \ \ |use\ distributive\ property:a(b-c)=ab-ac\\\\\dfrac{2m}{5}+3=28m-21\ \ \ \ \ |multiply\ both\ sides\ by\ 5\\\\2m+15=140m-105\ \ \ \ |subtract\ 140m\ from\ both\ sides\\\\-138m+15=-105\ \ \ \ |subtract\ 15\ from\ both\ sides\\\\-138m=-120\ \ \ \ |divide\ both\ sides\ by\ (-138)\\\\m=\dfrac{120:6}{138:6}\\\\\boxed{m=\frac{20}{23}}
7 0
3 years ago
Find the 79th term of the following arithmetic sequence. 5,11, 17, 23...
NikAS [45]

Answer:

the answer is 479.

Step-by-step explanation:

to make it simpler, pretend you start from 1. 1,7,so on. multiply six by 79, to get 474. but because you are starting from 5 and not 1, you have to add 5 on.

sorry im super bad at math so this might be wrong

4 0
2 years ago
Read 2 more answers
Which numbers are 9 units from −5 on this number line?
ExtremeBDS [4]

Using the number line, the numbers that are 9 units from -5 are: -14 and 4.

<h3>How to Locate a Number on a Number line?</h3>

To find two numbers that cover the same units from a given point on a number line, we can simply do the following:

  • Count the number of units given backwards/to the left from the point stated to get the first number.
  • Count the number of units given forwards/to the right from the point stated to get the second number.

Thus, we are asked to find the numbers that would be 9 units from -5, using the number line.

Count 9 units backwards/to the left from -5 to get the first number, which is: -14

Count 9 units forwards/to the right from the -5 to get the second number, which is: 4.

Therefore, the numbers that are 9 units from -5 on the number line, are: -14 and 4.

Learn more about number line on:

brainly.com/question/24644930

#SPJ1

8 0
1 year ago
Assume that A varies directly with z. If A = 30 when z = 5, find A when z = 9.
pishuonlain [190]
If A varies directly with z, and A is 30 and z is 5, then when z is 1, A is 6.
z: 5 ÷ 5 = 1
A: 30 ÷ 5 = 6
Then, when z is 1, A is 6
So, when z is 9, A is...
z: 1 × 9 = 9
A: 6 × 9 = 54

A is 54
6 0
3 years ago
Read 2 more answers
A clothing store donated a percent of every sale to hospitals. The total sales were $7,750 so the
Flauer [41]

Answer:

4%

Step-by-step explanation:

310 /7759 x 100% = 4%

6 0
3 years ago
Other questions:
  • What is the simplified expression for -3(2x-7)+2y+ 2(x+y)?
    8·1 answer
  • To convert 0.7 hours into minutes, which ratio could you multiply by? Remember that 1 hour = 60 minutes.
    14·1 answer
  • A pond 85 feet across; 1 inch = 4 feet
    11·1 answer
  • Use the properties of exponents to rewrite the expression.<br> (-3yz)(-3yz)(-3yz)(-3yz)
    10·1 answer
  • Which situation could the expression -255 represent?
    14·1 answer
  • Which of the following does not have a sum of 6?<br><br> 2 + 4<br> 8 + (-2)<br> -4 + (-2)<br> -2 + 8
    5·1 answer
  • PLS HELP 35 POINTS
    15·2 answers
  • 70 POINTS!!! read instruction below
    5·1 answer
  • Of the 800 participants in a marathon, 120 are running to raise money for a cause. How many participants out of 100 are running
    5·1 answer
  • Which set of measurements can represent the lengths of a triangle's sides? Classify each set of lengths as a Triangle or Not a t
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!