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Sphinxa [80]
3 years ago
12

PLS HELP ME!!!!!! I REALLY NEED IT

Mathematics
2 answers:
saul85 [17]3 years ago
5 0
Denia’s bag is 60% heavier than logan’s
Temka [501]3 years ago
3 0

Answer:

60% heavier

Step-by-step explanation:

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Solve for x. 21/2x−3/4(2x+5)=3/8
Savatey [412]
Simplify \frac{21}{2}x
​2
​
​21
​​ x to \frac{21x}{2}
​2
​
​21x
​​
\frac{21x}{2}-\frac{3}{4}(2x+5)=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3
​​ (2x+5)=
​8
​
​3
​​

2 Simplify \frac{3}{4}(2x+5)
​4
​
​3
​​ (2x+5) to \frac{3(2x+5)}{4}
​4
​
​3(2x+5)
​​
\frac{21x}{2}-\frac{3(2x+5)}{4}=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3(2x+5)
​​ =
​8
​
​3
​​

3 Multiply both sides by 44 (the LCM of 2, 42,4)
42x-3(2x+5)=\frac{3}{2}42x−3(2x+5)=
​2
​
​3
​​

4 Expand
42x-6x-15=\frac{3}{2}42x−6x−15=
​2
​
​3
​​

5 Simplify 42x-6x-1542x−6x−15 to 36x-1536x−15
36x-15=\frac{3}{2}36x−15=
​2
​
​3
​​

6 Add 1515 to both sides
36x=\frac{3}{2}+1536x=
​2
​
​3
​​ +15

7 Simplify \frac{3}{2}+15
​2
​
​3
​​ +15 to \frac{33}{2}
​2
​
​33
​​
36x=\frac{33}{2}36x=
​2
​
​33
​​

8 Divide both sides by 3636
x=\frac{\frac{33}{2}}{36}x=
​36
​
​
​2
​
​33
​​
​​

9 Simplify \frac{\frac{33}{2}}{36}
​36
​
​
​2
​
​33
​​
​​ to \frac{33}{2\times 36}
​2×36
​
​33
​​
x=\frac{33}{2\times 36}x=
​2×36
​
​33
​​

10 Simplify 2\times 362×36 to 7272
x=\frac{33}{72}x=
​72
​
​33
​​

11 Simplify \frac{33}{72}
​72
​
​33
​​ to \frac{11}{24}
​24
​
​11
​​
x=\frac{11}{24}x=
​24
​
​11
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X=11 over 24
4 0
3 years ago
Read 2 more answers
Three classes of school children are selling tickets to the school play. The number of tickets sold by these classes, and the nu
Westkost [7]

Answer:

The expression for the average number of tickets sold per school child is:

M = \frac{tickets*class1 + tickets2*class2 + tickets3*class3}{class1 + class2 + class3}

Step-by-step explanation:

The average number of tickets sold per school child is the weighted mean calculus between the number of tickets sold by these classes and the number of children in each classes.

This is the multiplication between the number of tickets sold by these classes and the number of children in each classes divided by the total weight(in this exercise, the total weight is the total number of school child).

So, the expression for the average number of tickets sold per school child is:

M = \frac{tickets*class1 + tickets2*class2 + tickets3*class3}{class1 + class2 + class3}

3 0
3 years ago
What is the common denominator as a fraction of 8/21
natulia [17]
How to reduce (simplify) ordinary fraction 8/21? Fraction can't be reduced (simplified). 8/21 = 0.380952380952; Result written as a positive proper fraction and a decimal number. Ordinary (simple, common) math fraction reducing to lowest terms (simplifying), answer with explanations below
4 0
4 years ago
A coral reef is 2 miles due south of its closest point along a straight shoreline. A visitor is staying in a cabin that is 4 mil
Goshia [24]

Answer:

5.54 miles

Step-by-step explanation:

1. Assume she runs up to a point that is x miles to the east of the coral reef:

distance running =

distance swimming =

2. Times:

time= distance / speed

time running =

time swimming =

3. Total time

time running + time swimming:  

             

4. Minimize time

The minimum time is when the derivative of the function of time is zero.

Find the derivative of T(x), using rule of the sum, the derivative of the sum is the sum of the derivatives, and the chain rule:

        

Solve for x:

         

5. Distance the visitor should run to minimize the time

Hence, the visitor should run 5.54 miles.

please mark me brainliest!

7 0
3 years ago
Find the equation in slope-intercept form that describes a line through (2, 4) with slope 0
vladimir2022 [97]
I belive the answer is b
3 0
3 years ago
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