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ahrayia [7]
3 years ago
8

What is 4 3/4 + 7/8 showing all work

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
7 0
4 \frac{3}{4} + \frac{7}{8}

Convert  mixed numbers  to improper fractions

=  \frac{19}{4} + \frac{7}{8}

Find de LCD  for 4 and 8 :

Factor each denominator  into its primes:

4 = 2^2


8 = 2^3

Find the  least common denominator 2^3 = 8

Adjust  fractions  based on  the LCD :

\frac{19*2}{8} +  \frac{7}{8}

Since the  denominators are equal , combine the fractions:

\frac{2*19+7}{8}

\frac{38+7}{8}

=  \frac{45}{8}

Therefore:

Convert  improper fractions to mixed numbers

= 5 \frac{5}{8}

hope this helps!
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The bigger
Arte-miy333 [17]

Answer:

See Explanation

Step-by-step explanation:

Required

Prove that Dexter is wrong

To prove that Dexter is wrong, we use the following numbers.

Number = 4

The factors are:

Factor = 1,2\ and\ 4

3 factors

Using a greater number:

Number = 5

The factors are:

Factor = 1\ and\ 5

2 factors

From the above analysis:

4 has 3 factors and 5 has 2 factors; which shows that 5 has fewer factors

This shows that Dexter is wrong

5 0
3 years ago
I need to solve for X Y and Z please and thank you
erastovalidia [21]

9514 1404 393

Answer:

  • x = 5
  • y = 30
  • z = 8

Step-by-step explanation:

The rhombus has several relevant properties.

  • The sides are all the same length
  • Diagonals are perpendicular bisectors of each other
  • Diagonals divide the rhombus into congruent triangles

The last of these relations can be used to find x:

  7x° = 35°

  x = 35°/7° = 5

The second of the relations can be used to find y:

  3y° = 90°

  y = 90°/3° = 30

The first of the relations can be used to find z:

  10z -8 = 5z +32

  5z = 40 . . . . . . . . . add 8-5z

  z = 40/5 = 8

4 0
3 years ago
What is the slope of this line?
Veseljchak [2.6K]

Answer:

Slope = 2

Step-by-step explanation:

(x₁ , y₁) = ( 1 , 1)   & (x₂,y₂) = (-1,-3)

Slope=\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\dfrac{-3-1}{-1-1}\\\\=\dfrac{-4}{-2}\\\\=2

4 0
3 years ago
7 3/8 + (-4 1/2) ÷ (-5 2/3) Please Explain
krek1111 [17]

Answer:

7 3/8 + (-4 1/2) ÷ (-5 2/3) = 8 23/136

Step-by-step explanation:

1) First I turned all the mix numbers into improper fractions:

7 3/8 ----> ( 7(8)+3/8) = 59/8, 4 1/2 ----> (4(2)+1/2) = 9/2, 5 2/3 ---->  (5(3)+2/3) = 17/3

So now it should look like this: 59/8 + (-9/2)÷(-17/3)

2) Now our goal is to divide both of the improper fractions (-9/2)÷(-17/3),

- We first apply our fraction rule:  -a/-b = a/b (when we have two negatives they cancel out each other and make a positive)

Our Case, From this:-9/2 ÷ -17/3 = To This: 9/2 ÷ 17/3

3) Now we can divide the fractions using this rule: a/b ÷ c/d = a times d / b times

Our Case, From This: 9/2 ÷ 17/3 To This: 9(3)/2(17) Which Gives Us: 27/34

(9 x 3 = 27, 2 x 17= 34)

So now it looks like this: 59/8 +27/34

4) Our look goal is to have the same denominator (which is the bottom part of the fraction)  which are 8 and 34

To find it we find the LCM or Least Common Multiple of 8 and 34

(The LCM of a, b is the smallest positive number that is divisible by both a and b) which in this case a and b are 8 and 34  

LCM is 136

5) We adjust our two fractions based on the LCM,

(Multiply each numerator ( top part of the fraction)  by the same amount of needed to multiply its corresponding denominator to turn it to the LCM 136.

From This: 59/8  and 27/34 To This: 1003/136 and 108/36 ( 59(17)/8 (17) = 1003/136, 27(4)/34(4) = 108/306

6) Finally we can add the numerator (1003 and 108) together: 1003+108= 1111 and now we are left with 1111/136

Then we turn our improper fraction back into a mix number: 1111/138= 8 23/136

3 0
4 years ago
Read 2 more answers
find the volume of a sphere, given that its surface area is 600cm2, round your answer to 3 significant figures.
velikii [3]
Well, surface area is 4 * pie *r^2 

and volume = 4/3 * pie * r^3

so, 600 = 4 * 3.14 * r^2
r^2 = 47.77
r=6.91

v = 4/3 * 3.14 * 6.91^3 =1381.979 cm3

hope it helepd

8 0
3 years ago
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