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sashaice [31]
3 years ago
12

5(2 + 3) = ? for easy points

Mathematics
2 answers:
DedPeter [7]3 years ago
8 0

Answer:25

Step-by-step explanation:

AnnyKZ [126]3 years ago
7 0

Answer:

25

Step-by-step explanation:

because you have to multiply to get the parentheses off.

You might be interested in
X+4y=30 system by substitution <br><br> X-2y=0
Dmitry [639]

Answer:

x=10, y=5

Step-by-step explanation:

For substitution, you always want to get the variable alone. The second equation (x-2y=0) will be easier to substitute into the first equation.

x-2y=0

x=2y

You can substitute 2y as x on the first equation (x+4y=30).

2y+4y=30

6y=30

y=5

Plug y=5 into any equation.

x+4(5)=30

x+20=30

x=10

3 0
3 years ago
Test the claim below about the mean of the differences for a population of paired data at the level of significance α Assume the
Evgen [1.6K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The  correct option is F

t =  1.17

t_ {\alpha , df} =t_ {0.10 , 8} = 1.86

Since the test statistics<u> is outside </u>the rejection region , <u>we fail to reject </u>the null hypothesis ,There<u> is no</u>  statistically significant evidence to reject the claim

Step-by-step explanation:

From the question we are told that

    The  claim is  \mu =  0

Hence  

      The  null hypothesis is  H_o  :  \mu = 0

       The  alternative is  H_a  :  \mu  \ne  0

Generally the test statistics is mathematically represented as  

                 t =  \frac{\= d - \mu_d }{ \frac{s_d}{ \sqrt{n} } }

=>              t =  \frac{3.5 -0 }{ \frac{8.94}{ \sqrt{9} } }

=>              t =  1.17

Generally the degree of freedom is mathematically represented as

      df  =  n- 1

      df  =  9 -  1

      df  =  8

From the student t-distribution table  the critical value of  \alpha at a degree of freedom of  8 is  

          t_ {\alpha , df} =t_ {0.10 , 8} = 1.86

Since the t_ {\alpha , df} is  outside the rejection region , we fail to reject the null hypothesis ,There is no sufficient evidence to reject the claim

4 0
4 years ago
Why does building a ladder of bonds potect against changes in interest rates?
alukav5142 [94]

Answer:

Build a bond ladder to boost

Step-by-step explanation:

By using a bond ladder, you smooth out the fluctuations in the market because you have a bond maturing every year or so. The second reason for using a bond ladder is that it provides investors with the ability to adjust cash flows according to their financial situation.Sep 18, 2019

3 0
4 years ago
9.8-7.5 how do I solve for this
nlexa [21]

Answer:

Its simple the anwser is 2.3

Step-by-step explanation:

               9.8

              -7.5=

               2.3

8 0
3 years ago
Check my Work: Factoring for 2y^+9y-18 is (2y-3) (y+6) true or false?
Alexxandr [17]

It is true because when you separate 2y^2 +9y -18, you are supposed to get the factors (2y-3)(y+6), when you multiply this it gives you the first equation, we know this because when we multiply the first term it gives us exactly 2y^2 and if we multiply the last ones it gives you -18, now here is the tricky part, when we multiply the middle part we get 12y and -3y, when we add these up we get 9y, now is that the same middle as in the equation? Yes… then our factors are correct making this true


Hope this helps

7 0
3 years ago
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