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Inessa [10]
3 years ago
11

How do you answer this question.

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
8 0
Lets write this out:-

\frac{50}{100} + \frac{30}{100}

To answer this we just need to add the numerators of both fractions because the denominator's are already common multiples. 

\frac{50}{100}+ \frac{30}{100} = \frac{80}{100}

Now lets simplify \frac{80}{100}.

\frac{80/20}{100/20}=  \frac{4}{5}

So, \frac{50}{100}+  \frac{30}{100} = \frac{80}{100}= \frac{4}{5}

Hope I helped ya!! xD
Vikentia [17]3 years ago
7 0
\frac{50}{100} + [tex] \frac{30}{100}[\tex]. Just multiply the numerators. The denominator is already a common denominator.
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Factor by grouping <br> 3x^2-11x+10
Burka [1]

Answer: (x - 2)(3x - 5)

Step-by-step explanation:

I'm using the berry method to factor, so first, I multiply 3 times 10 to get 30. Now I have to figure out what two numbers, when multiplied together, yield 30 and when are added together, give me -11. Those two numbers are -6 and -5. The equation now becomes (3x -6)(3x -5). Reducing the first binomial: (3x - 6)/3 = (x - 2)

the solution is (x - 2)(3x - 5), and we can check this by multiplying it out, which gives us our starting number, meaning it's correct.

7 0
3 years ago
Help need ASAP!! Thanks!! Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangl
Basile [38]

Answer:

The perimeter of rectangle is 18\ cm

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

x=y+5 ----> equation A

120=xy+2x^{2}+2y^{2} ---> equation B (area of the constructed figure)

substitute the equation A in equation B

120=(y+5)y+2(y+5)^{2}+2y^{2}

120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0

using a graphing tool -----> solve the quadratic equation

see the attached figure

The solution is

y=2\ cm

Find the value of x

x=y+5 ----> x=2+5=7\ cm

Find the perimeter of rectangle

P=2(x+y)=2(7+2)=18\ cm

8 0
3 years ago
10 points but I need help please
deff fn [24]

Answer:

200

Step-by-step explanation:

5 0
3 years ago
Please help me with this question :(
elena-s [515]

Step-by-step explanation:

Volume of the cylinder = πr²h

π(2.1)² (6) = 83.12 cm³

volume of prism = ½bhl

2(10)(3.5) = 70cm³

Volume of cylinder is more than that of prism.

Therefore, Cylinder holds more water

7 0
3 years ago
Y=x+5 and y= (3)/(2)x - 5
zheka24 [161]

Step-by-step explanation:

Given:

Two Equations

 y = x + 5             ..................(1)

 y =  (3/2) x - 5    ...................(2)

Both are considered as Equation (1) and (2) respectively,

 Equating the equation 1 and 2, we get

 ⇒  x + 5 =  (3/2) x - 5

 ⇒  x - (3/2) x = - 5 - 5

 ⇒  (2x - 3x) /2 = - 10

  ⇒ - x = - 20  

  ⇒    x = 20

 Now substituting "x = 20" in equation  (1), we get

 ⇒   y  = 20 + 5

 ⇒   y = 25

   Thus, we get the value of x = 20 and value of y = 25.

7 0
4 years ago
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