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3 years ago

What is 1/3 + 1/2 = ???

Mathematics

2 answers:

xxTIMURxx [149]3 years ago

8 0

Answer:

5/6

Step-by-step explanation:

To do this you just have to find the LCM (least common multiple)

2 3

4 6

And the denominator will be 6 and you multiply 1 /3 by 2/2 and 1/2 by 3/3 which is 2/6 and 3/6 and when added you get 5/6

Molodets [167]3 years ago

7 0

1/3 + 1/2 is 5/6

Explanation: 1/3 plus 1/2 would be 5/6. 1/3 = 2/6. 1/2 = 3/6. 2/6 + 3/6

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Dennis and Ivy share some sweets between them in the ratio 7:4 Dennis got 42 sweets. How many does ivy get

MrRa [10]

Answer:

$Ivy = 24$

Step-by-step explanation:

Given

$Dennis : Ivy = 7 : 4$

Required

Determine the amount of sweet Ivy gets when Dennis = 42

We have:

$Dennis : Ivy = 7 : 4$ and

$Dennis = 42$

Substitute 42 for Dennis in $Dennis : Ivy = 7 : 4$

$42 : Ivy = 7 : 4$

Convert to fraction

$\frac{42}{Ivy} = \frac{7}{4}$

Cross Multiply:

$Ivy * 7 = 42 * 4$

Divide through by 7

$\frac{Ivy * 7}{7} = \frac{42 * 4}{7}$

$Ivy = \frac{42 * 4}{7}$

$Ivy = 6* 4$

$Ivy = 24$

6 0

3 years ago

In preparing a certain ointment, a pharmacist used 28.35 g of zinc oxide instead of the 31.1 g called for. Calculate the percent

Vilka [71]

Answer: 9.70%

Step-by-step explanation:

The formula to find the percentage error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : Actual mass of zinc oxide used by pharmacist = 28.35 g

Estimated mass of zinc oxide used by pharmacist =31.1 g

Now, $\%\text{ error}=\dfrac{|31.1-28.35|}{28.35}\times100$

i.e. $\%\text{ error}=\dfrac{2.75}{28.35}\times100$

i.e. $\%\text{ error}=9.70017636684\approx9.70\%$

Hence, the percentage of error on the basis of the desired quantity.= 9.70%

5 0

4 years ago

2(1/4x + 4) = 3(x -2) PLZ HELP

frozen [14]

Distribute 2 and remove parentheses :
1/2x+8=3x-6
Multiply both sides of equation by 2:
x+16=6x-12
Move terms:
x+16-6x=-12
x-6x=-12-16
Collect like terms:
-5x=-28
Divide both sides:
x=28/5

8 0

3 years ago

Help Now Please!!!<br> Find the area of the sphere

Makovka662 [10]

3, 217
Sorry if it’s wrong
Hope this helped *smiles*

3 0

3 years ago

Give me an example of quadratic equation.

nata0808 [166]

X(x - 2) = 4 [upon multiplying and moving the 4 becomes x² - 2x - 4 = 0] x(2x + 3) = 12 [upon multiplying and moving the 12 becomes 2x² - 3x - 12 = 0] 3x(x + 8) = -2 [upon multiplying and moving the -2 becomes 3x² + 24x + 2 = 0]

6 0

4 years ago