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anyanavicka [17]
3 years ago
7

Hello need help please with Divide rational and simplify

Mathematics
1 answer:
aliina [53]3 years ago
5 0
Dividing fractions is the same as multiplying by its reciprocal so you can change the equation to this
\frac{ - 14 + 7x}{4}  \times  \frac{4}{4 - 2x}
And you can simplify by eliminating the fours and multiplying straight across
\frac{ - 14 + 7x}{4 - 2x}
You can pull out - 7 from the top and 2 from the bottom so you have this
\frac{ - 7(2  -  x)}{2(2 - x)}
And then you can cancel out to (2-x) to get an answer of
\frac{ - 7}{2}
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What is 0.00000802 in scientific notation
salantis [7]
0.00000802=8.02 \cdot 10^{-6}
8 0
3 years ago
Find the sum of last ten terms of the AP : 8, 10, 12,...., 126.
lidiya [134]
For finding, the sum of last ten terms, we write the given AP in reverse order i.e, 126, 124, 122,..., 12, 10, 8

Hence,first term (a) = 126, common difference, (d) = 124 - 126

So, S _{10} = \frac{10}{2} [ 2a + (10 - 1)d ] \:
= 5 [2(126) + 9( - 2) ]
= 5(252 - 18)
= 5 \times 234 = 1170
7 0
3 years ago
Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!
Karolina [17]

Answer by JKismyhusbandbae: 8 × 4

Explanation/Work: There are 8 snack bags with 4 muffins in each. Multiply 8 × 4 to find the total number of muffins.

6 0
3 years ago
Read 2 more answers
Raspuns rapid !!!! Matematica clasa a 5a.
Zigmanuir [339]

 

U(1)=1\\U(1\times2)=2\\U(1\times2\times3)=6\\U(1\times2\times3\times4)=U(24)=4\\U(1\times\boxed{2}\times3\times4\times\boxed{5})=0 \text{ because of } 2\times5=10\\U(1\times\boxed{2}\times3\times4\times\boxed{5}\times6)=0 \text{ because of } 2\times5=10\\....................\\....................\\U(1\times\boxed{2}\times3\times4\times\boxed{5}\times6\times...\times2019)=0 \text{ because of } 2\times5=10

 

\implies~U(1+1\times2+1\times2\times3+1\times2\times3\times4+...+1\times2\times3\times....\times2019)=\\=U(1+1\times2+1\times2\times3+1\times2\times3\times4) = ~~~\text{(The others terms have U = 0)}\\=U(1+2+6+24)=U(33)=\boxed{\bf3}

 

 

3 0
4 years ago
How many terms are in the arithmetic sequence shown below?<br>15, 7, -1, -9...,-225
NemiM [27]
We know that

We can write an Arithmetic Sequence as a rule:

<span>an = a1 + d(n−1)</span>

where

<span>a1 = the first term
<span>d =the "common difference" between terms

in this problem
a1=15  a2=7  a3=-1  a4=-9  .....    an=-225
d=a2-a1  
d=7-15-----> d=-8

</span></span>an = a1 + d(n−1)
for
an=-225
d=-8
a1=15
find n
-225=15+(-8)*(n-1)--> (n-1)=[-225-15]/-8----> n-1=30---> n=30+1---> n=31

the answer is
31

3 0
4 years ago
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