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
Goshia [24]
3 years ago
9

Help!!! Find the zeros of the quadratic equation by factoring. x^2+4x-5=0

Mathematics
1 answer:
weqwewe [10]3 years ago
4 0

Answer:

x = -5, 1

Step-by-step explanation:

To factor an equation, break the polynomial into two binomials which multiply to make it. Find two numbers that multiply to C and add to B from ax^2 + bx + c.

-1 and 5 multiply to -5 and add to 4.

x^2+4x-5 = (x+5)(x-1)

The zeros are the factors set equal to 0 and solved.

(x+5) = 0

x=-5

(x-1) = 0

x=1

You might be interested in
Need help with this answer plz help
jeyben [28]
It would be H because 13 has no factors other than 1, and 13.

Hope this helps!
6 0
3 years ago
Read 2 more answers
The subtotal of your computer purchase was $398.50. If the sales tax rate is 7.25%, how much will you pay in tax for the compute
Hatshy [7]

Answer:

54.97

Step-by-step explanation:

6 0
3 years ago
Plz answer only if u know ur correct
hichkok12 [17]

Answer:

1/2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
The following table lists the masses, in grams, of the nine planets (including dwarf planet Pluto). Use the data to choose the c
Marrrta [24]

The ratio between the masses of Jupiter and Venus is

\dfrac{1.989\cdot 10^{30}}{4.869\cdot 10^{27}}

We can separate the coefficient and the powers of ten:

\dfrac{1.989\cdot 10^{30}}{4.869\cdot 10^{27}}=\dfrac{1.989}{4.869}\cdot \dfrac{10^{30}}{10^{27}}

Use the exponent rule

\dfrac{a^b}{a^c}=a^{b-c}

to simplify the powers of 10:

\dfrac{10^{30}}{10^{27}}=10^3

So, the ratio is

\dfrac{1.989}{4.869}\cdot 10^3\approx 0.4\cdot 10^3=400

So, Jupiter has a mass that is approximately 400 times greater than Venus's.

4 0
3 years ago
Read 2 more answers
Solve the system of equations y = 2x + 3 and 4x - 2y = -6 using a graphical method.
emmasim [6.3K]

Answer:

-1

Step-by-step explanation:

You are asked to solve this set by substitution. Note that the first equation defines

the value of y in terms of x. Therefore, you can use the right side of this equation

(2x + 3) as a substitution for y in the second equation. When you substitute 2x +3 for y

in the second equation, the result is:

.

2x + 3 = 4x + 7

.

Let's set the goal of getting all the terms that contain x isolated on the left side of

the equal sign and all the constants by themselves on the right side. Begin by getting rid

of the +3 on the left side by subtracting 3 from the left side. But if you subtract

3 from the left side you must also subtract 3 from the right side. These subtractions

result in the following sequence:

.

2x + 3 - 3 = 4x + 7 - 3

.

Combining numbers on the left side and on the right side simplifies the equation to:

.

2x = 4x + 4

.

Now, in a similar fashion, let's get rid of the 4x on the right side by subtracting

4x from the right side. When we do this subtraction, to keep the equation in balance

we must also subtract 4x from the left side. This results in:

.

 

2x - 4x = 4x - 4x + 4

.

On both sides of the equation combine terms containing x to get:

.

-2x = 4

.

Finally, solve for x by dividing both sides of the equation by -2 because -2 is the multiplier

of x. This results in:

.

x = 4/-2 = -2

.

So now that we know x = -2, we can return to either one of the original equations  

in the equation set and substitute -2 for x. Then we can solve for y. Let's return

to the first equation and substitute -2 for x. This begins with:

.

y = 2x + 3

.

Then substituting -2 for x gives:

.

y = 2*(-2) + 3 = -4 + 3 = -1

7 0
3 years ago
Other questions:
  • Which expression is equivalent to 16c+24d​
    12·2 answers
  • Write each expression in exponential form and find its value 1/6*1/6*1/6*1/6
    7·1 answer
  • WILL MARK BRAINLIEST!
    5·1 answer
  • In ΔTUV, the measure of ∠V=90°, the measure of ∠T=16°, and VT = 4.9 feet. Find the length of TU to the nearest tenth of a foot.
    6·1 answer
  • I need help plz i dont know if im right
    9·1 answer
  • Please help answer this question!! 20 points!!!!
    10·1 answer
  • Find with proof the minimum possible k such that every subset of f1; 2; : : : ; 2022g of size k must contain at least two elemen
    5·1 answer
  • What’s the meaning of pi and how to find the cylinder of a cylinder. ( JUST DO NUMBER 1)
    11·1 answer
  • Please help 6 points​
    14·2 answers
  • Yesterday, Bethany sent 60 text messages. She said that 15% of those messages were to her best friend. How many text messages di
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!