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Brrunno [24]
3 years ago
14

Solve for the following by FACTORING: x2 + 15x + 56 = 0

Mathematics
1 answer:
EastWind [94]3 years ago
7 0

Answer:

17x + 56 = 0

Step-by-step explanation:

add 2x and 15x

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Given the system of equations, what is the solution? x 3y = 5 x - 3y = -1 {(-4, -3)} {(2, 1)} {(-2, 3)}
PSYCHO15rus [73]

The solution of the equation is (2, 1).

x=2 and y=1

<h3>What do you meant by equation?</h3>

A mathematical assertion that two expressions are equal is known as equating. It can be expressed as either an identity, in which case the variables can take on any value, or a conditional equation, in which case the variables can only have specific values (roots).

<h3>According to the given information:</h3>

We have two options for finding the answer. The first is to solve the equations via term elimination:

x + 3y = 5  ..............1

x - 3y = -1  ...............2

2x = 4 ..............3

With the equation, we can determine x. (3)

x = 4/2

x = 2

To determine y, we may now swap out x=2 in equation (1).

x + 3y = 5

2 + 3y = 5

3y = 3

y = 1

We've discovered x and y now.

x=2

y=1

The second method involves removing x from equation 1.

x + 3y = 5

x = 5 - 3y

In the equation right now, we may substitute x = 5 - 3y.........  (2)

x - 3y = -1

(5 - 3y) - 3y = -1

5 - 6y = -1

6y = -6

y = 1

Currently, we can change y=1 in equations (1), (2), or (4) to find x.

We'll apply the equation (1)

x + 3y = 5

x + 3(1) = 5

x + 3 = 5

x = 2

The two variants x = 2 and y = 1 have allowed us to confirm this.

To know more liner equation visit:

brainly.com/question/2995422

#SPJ4

7 0
2 years ago
E) que características tienen las gráficas que representan una relación de proporcionalidad directa entre la cantidad de agua en
jekas [21]

Answer:

here is a videos look it up on you tube and it might help

Step-by-step explanation:

search this

Interpreting graphs of proportional relationships

7 0
3 years ago
It takes Bob 3 hours and 30 minutes to drive from Albuquerque to Las cruises which is 360 km away?​
nata0808 [166]

Answer:

it actually takes 3 hours and 11 min.

Step-by-step explanation:

in no sure what you are trying to ask

7 0
4 years ago
Element X is a radioactive isotope such that every 5 years, its mass decreases by half.
Verdich [7]

Answer: 24 grams of element would remain.

Step-by-step explanation:

Exponential function for decay:

f(x)=Ab^{\frac{x}{n}} ....(i) , where A = initial value , b = decay factor, x = time , n= time per period

As per given,

A = 569 grams , b=\dfrac12

n= 5 years, t = 23 years

Put all values in (i) , we get

f(23)=590(\dfrac12)^{\frac{23}{5}}\\\\\\=590\times 0.0412346222117\\\\=24.3284271049\approx 24

Hence, after 23 years , 24 grams of element would remain.

6 0
3 years ago
Ill mark as brainiest :)
Inessa05 [86]

Answer:

1 ruler costs $0.60

Step-by-step explanation:

$20-$4.70=$15.30

Calculator =$7.50

3 Packs of Pens = $1.80 each

4 rulers= x each

$7.50 + 3($1.80) + 4x = $15.30

7.50 + 5.40 + 4x = 15.30

12.90 + 4x = 15.30

4x = 2.40

x = 0.60

6 0
4 years ago
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