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NNADVOKAT [17]
2 years ago
7

Help please.

Mathematics
1 answer:
Bumek [7]2 years ago
4 0

Answer:

20 cm² & 80 cm²

Step-by-step explanation:

Ratio of areas = (ratio of sides)²

Ratio of sides: 2/4 = ½

Ratio of areas: (½)² = ¼

Areas are:

⅕(100) = 20

⅘(100) = 80

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Solve for x and explain the steps:<br> 3x-6=4(2-3x)-8x
mote1985 [20]

Answer: x = 14/23

Step-by-step explanation:

3x-6=4(2-3x)-8x

3x-6=8-12x-8x --> Expand 4(2-3x)

3x-6=8-20x --> Collect like terms

3x-6+6=8-20x+6 --> Add 6 to both sides, to remove it from the right side

3x=-20x+14

3x+20x=-20x+14+20x --> Add 20x to both sides, to remove it from the left side

23x=14

\frac{23x}{23}=\frac{14}{23} --> Divide both sides by 23

x = 14/23

7 0
2 years ago
Can someone answer asap!!?!? I’ll mark brainlist please help me
dedylja [7]

Answer:

9

Step-by-step explanation:

8/12=2/3

6/9=2/3

5 0
3 years ago
Read 2 more answers
Which two statements below are true ?
Marrrta [24]
A) 2/6 = 1/3
1/3 = 1/3

True 

------

b) 1/3 > 2/4
1/3 > 1/2 

False
------

c) 1/8 > 3/4

False
------

d) 2/5 < 1/2

True
------

e) 4/12 < 1/6

False
------

f) 3/5 = 7/10

False
------

This is all just a process of simplifying fractions down.

The only 'true' statements there are is option A and D.
6 0
3 years ago
What is 11 1/2 + 10 11/16=
ahrayia [7]

Hey!



To solve this equation, we must first convert the mixed numbers into improper fractions. To do that we'll multiply the denominator by the whole number and add the total to the numerator.


<em>Original Equation :</em>

11\frac{1}{2} + 10\frac{11}{16} = ?


<em>New Equation {Converted Mixed Numbers Into Improper Fractions} :</em>

\frac{23}{2} + \frac{171}{16} = ?


Now that we've successfully changed our equation, we'll move onto the next step. Next we'll have change the fractions one more time so that the denominators are the same. To do that we'll multiply two by eight to get sixteen. We'll also be multiplying the top portion of the fraction by eight, because whatever you do to the bottom must also be done to the top; And vise versa.


<em>Fraction Conversion :</em>

\frac{23*8}{2*8} = \frac{184}{16}


So, now that we have our new fraction we can go ahead and plug that into our equation so we can start adding. Remember, we don't add the denominators, just the numerators.


<em>Old Equation :</em>

\frac{23}{2} + \frac{171}{16} = ?


<em>New Equation {Input New Fraction With Common Denominator} :</em>

\frac{184}{16} +\frac{171}{16} = ?


<em>Solution {New Equation Solved} :</em>

\frac{355}{16}


Now I'm not exactly sure how your instructor will accept your answer, but most prefer the final answer to be in the simplest form. In other words, they don't want it in the form of an improper fraction. They'd most likely rather have it as a mixed number.


<em>New Solution {Converted to a Mixed Number} :</em>

22\frac{3}{16}


Since the fraction cannot be simplified anymore, this should be our final answer.

<em>So, this means that the answer to the equation is </em> 22\frac{3}{16}.


Hope this helps!



- Lindsey Frazier ♥

5 0
3 years ago
Read 2 more answers
A circuit has a current of (8 + 7i) amps, and another circuit has a
Schach [20]

Answer:

Answer: <u> </u><u> </u><u>3</u><u> </u><u>+</u><u> </u><u>1</u><u>0</u><u>i</u><u> </u>

Step-by-step explanation:

= { \rm{(8 + 7i) - (5 - 3i)}} \\  \\  = { \rm{(8 - 5) + (7 + 3)i}} \\  \\ { =  \rm{3 + 10i}}

8 0
2 years ago
Read 2 more answers
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