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
iren2701 [21]
3 years ago
14

5. Find the solutions of x^2 – X-30 = 0. please show work on how to do it

Mathematics
2 answers:
erica [24]3 years ago
8 0

Answer:

x=6, x= -5

Step-by-step explanation:

Factor the equation

x^2 - x - 30 = 0 ----> (x-6)(x+5)=0

Next find the solution by setting those in the paranthesis equal to zero.

x-6=0 ----> x= 6

x+5=0 ----> x= -5

Sonbull [250]3 years ago
3 0

Step-by-step explanation:

{x}^{2}  - x - 30 = 0

➡️ {x}^{2}  + 5x - 6x - 30 = 0

➡️ x \times (x + 5) - 6(x + 5) = 0

➡️ (x + 5) \times (x - 6) = 0

➡️ x  + 5 = 0

➡️ x  - 6 = 0

➡️ x =  - 5

➡️ x = 6

➡️ x_{1} =  - 5. \:  x_{2} = 6

You might be interested in
Michael and Lindsey are saving money. Michael begins with $20 and saves $5 per week. Lindsey begins with no money, but saves $10
True [87]
Let
x----------> number of weeks
y----------> saved money

we now that

<span>Michael begins with $20 and saves $5 per week
so
y=20+5x------> equation 1

and
</span><span>Lindsey begins with no money, but saves $10 per week
</span><span>y=10x-------> equation 2

</span><span>the number of weeks it will take for Lindsey and Michael to save the same amount of money is when equation 1 is equals to equation 2
</span>
therefore
20+5x=10x------> 10x-5x=20------> 5x=20-----> x=20/5-----> x=4 weeks

the answer is 
4 weeks
3 0
3 years ago
The Ericsson method is one of several methods claimed to increase the likelihood of a baby girl. In a clinical trial, results co
Travka [436]

Answer:

0.001

Step-by-step explanation:

Ericsson is claimed to increase the likelihood of a baby girl ;

Given the alternative hypothesis to buttress this claim :

HA : p>0.5

In other to establish the success of Ericsson's claim, then there must be significant evidence to reject the Null hypothesis ; hence adopt the alternative.

To Do this, we need a very small Pvalue ; such that it will be lesser than the α - value in other to reject the Null and adopt the alternative.

Recall ;

Pvalue < α ; We reject the Null

Therefore, from the options, we choose the smallest Pvalue as we want the Pvalue to be as small as possible.

4 0
3 years ago
&lt;1 and &lt;2 are supplementary. m&lt;1=4x and m&lt;2 =92 what is the value of x
monitta

Answer:

x=22

Step-by-step explanation:

Supplementary means that the two angles that are supplementary equal 180 degrees. 180-m<2=m<1

180-92=88 (m<2=92)

m<1=88

m<1=4x

4x=88

x=22

7 0
2 years ago
Factor completely: 2x4 − 32.
vazorg [7]

Answer:

Option b) is correct.

The completed factor of given expression is  2(x-2)(x+2)(x^2+4)

Step-by-step explanation:

Given expression is 2x^4-32

To find the completed factor for the given expression:

2x^4-32:

Taking the common number "2" outside  to the above expression we get

2x^4-32=2(x^4-16)

Now rewritting the above  expression as below

=2(x^4-2^4)  (since 16 can be written as the number 2 to the power of 4)

=2((x^2)^2-(2^2)^2)

The above expression is of the form a^2-b^2=(a+b)(a-b)

Here a=x^2 and  b=2^2

Therefore it becomes

=2(x^2+2^2)(x^2-2^2)

=2(x^2+4)(x^2-2^2)  

The above expression is of the form a^2-b^2=(a+b)(a-b)

Here a=x and  b=2

Therefore it becomes

=2(x^2+4)(x+2)(x-2)  

=2(x+2)(x-2)(x^2+4)  

Therefore =2(x+2)(x-2)(x^2+4)  

2x^4-32=2(x-2)(x+2)(x^2+4)  

Option b) is correct.

The completed factor of given expression is  2(x-2)(x+2)(x^2+4)

3 0
3 years ago
Read 2 more answers
Please help!!<br> What is the value of x?
USPshnik [31]

Answer:

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Examine the steps for finding the product of (224)(16) in the example shown.
    11·1 answer
  • What is the value of c in the equation c−4.5=3.8 ?
    6·2 answers
  • What are the complete factors of the polynomial 7x - 7?​
    7·1 answer
  • Is f(x)=1/3x+2 linear or exponential
    7·1 answer
  • Seven times a number is the same as 12 more than 3 times the number. find the number
    8·2 answers
  • Determine the decision criterion for rejecting the null hypothesis in the given hypothesis​ test; i.e., describe the values of t
    11·1 answer
  • How many lines of symmetry does it have (pic attached) random answers will be reported guys
    6·1 answer
  • Evaluate the expression if h is 1/3
    12·2 answers
  • If ³√a=am , what is m​
    14·1 answer
  • Integral formula! and example!​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!