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crimeas [40]
3 years ago
9

Factor the polynomial completely. x2 - x + 7

Mathematics
1 answer:
blagie [28]3 years ago
3 0
D it can not be factored because it 7 can not be broken down into nothing else
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Plz help me i cant figure this out and explain the steps pls
dem82 [27]
Okay so first let’s set one of the two equations equation to one of the two variables

I’m going to pick the second equation and y

So

x+y=10
y=10-x

Now let’s bring the other equation in and substitute y for 10-x

2x+3y=45
2x+3(10-x)=45

Now solve for x

2x+3(10-x)=45
2x+30-3x=45
-x+30=45
-x=15
x=-15

Okay so now we have x = -15 now let’s find y by using the original equation I moved around and pigging in y like

y=10-x

Plug in x

y=10-(-15)
y=10+15
y=25

So now that I look back at the program you only needed x but her is x and y I hope I helped
5 0
3 years ago
Need help with this
mote1985 [20]

Answer:

y = 1

Step-by-step explanation:

Since 15 and 5, 18 and 6, and 27 and 9 all have 3 in common, then 3 should go into 1.

3 0
3 years ago
Read 2 more answers
g If the p-value for your test statistic in a test of hypothesis (for example, a t-test, one-tail) is 0.07 and the significance
Reptile [31]

Complete Question

If the p-value for your test statistic in a test of hypothesis (for example, a t-test, one-tail) is 0.07 and the significance level alpha is set at 0.05, you conclude that:

A  

Both hypotheses H0 and H1 can be accepted

B

The null hypothesis H0 cannot be rejected

C

The null hypothesis H0 can be rejected

D

The research hypothesis H1 can be accepted

Answer:

The correct option is B

Step-by-step explanation:

From the question we are told that

     The p-value  is  p-value  =  0.07

     The level of significance is  \alpha  =  0.05

Generally given that it is a one tail test then the possible value of  

   The null hypothesis is  H_o : \mu =  x

Here \mu is the mean and  x  is the value  

 the possible values of the  alternative hypothesis is  \mu >  x  \ \ or  \ \  \mu < x

Now from the value given we see that the  p-value >  \alpha  hence

The decision rule is  

    Fail to reject  the null hypothesis

       

7 0
3 years ago
Find the missing dividend ÷4.30=8.60​
Yuki888 [10]

Step-by-step explanation:

4.30*8.60=36.98 thats the answer

36.98

8 0
3 years ago
Read 2 more answers
Solve for X and solve for Y?
Llana [10]

Answer:

x=3\sqrt 5\\

y = \sqrt {126}

Step-by-step explanation:

By geometric mean property:

x =  \sqrt{9 \times 5}  =  \sqrt{45} = 3 \sqrt{5}   \\  \\ by \: pythagoras \: theorem \\  \\  {y}^{2}  =  {9}^{2}  +  {x}^{2}  \\  \\  {y}^{2}  =  {9}^{2}  +  {(3 \sqrt{5}) }^{2}  \\  \\  {y}^{2}  = 81 + 45 \\  \\  {y}^{2}  = 126 \\  \\ y =  \sqrt{126}

7 0
3 years ago
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