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agasfer [191]
2 years ago
14

Plsss !! help me i need to find the area as a sum and area as a product. I need the steps

Mathematics
1 answer:
dybincka [34]2 years ago
7 0

Step-by-step explanation:

=3x (2x+7)+2(2x+7)

=6x2+21x+4x+14

6x2+25x +14

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Anja is creating a triangle using three straws. The two shorter straws have lengths of 20 cm and 21 cm. How long, in centimeters
Digiron [165]
A^2 + b^2 = c^2...a and b are the legs and c is the hypotenuse
20^2 + 21^2 = c^2
400 + 441 = c^2
841 = c^2
sqrt 841 = c
29 = c <== third straw will be 29 cm
3 0
3 years ago
Thomas has two kittens. He records the
rusak2 [61]

Answer:

4.09

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
7 pipes fill a tank in 50 minutes. How many minutes does it take if there are 11 pipes?
Alekssandra [29.7K]

Answer: With 11 pipes, you need 31.82 minutes to fill the tank.

Step-by-step explanation:

Let's define R as the rate at which one single pipe can fill a tank.

We know that 7 of them can fill a tank in 50 minutes, then we have the equation:

7*R*50min = 1 tank

Whit this equation, we can find the value of R:

R = 1 tank/(7*50min) = (1/350) tank/min.

Now that we know the value of R, we can do the same calculation but now with 11 pipes.

Then the time needed to fill the tank, T, is such that:

11*(1/350 tank/min)*T = 1 tank

We need to isolate T.

T = 1 tank/(11*(1/350 tank/min)) = 31.82 min

With 11 pipes, you need 31.82 minutes to fill the tank.

5 0
3 years ago
Find the mistake and correct it
Murljashka [212]

Answer:

i believe its the second part thats wrong  

Step-by-step explanation:

1 Distribute

−5(−2+10)=20

10−50=20

2 Add 50 to both sides of the equation

10−50=20

10−50+50=20+50

3 Simplify

Add the numbers

10x−50+50=20+50

10=20+50

Add the numbers

10x =20 + 50

10x=10

4 Divide both sides of the equation by the same term

10x = 70

10x   70

---- = ----

10      10

5 Simplify

Cancel terms that are in both the numerator and denominator

10x   70

---- = ----

10      10

      70

x  = ----

       10

   

        70

x  = ----

       10  

x=7

Solution

= 7

hopes it helps and list brain list plz

6 0
2 years ago
Length of bird is 36 inches longer than twice it’s wingspan. The length of bird is 214 inches. What is the wingspan?
IrinaVladis [17]
13 I think because they give everyone the same amount
6 0
3 years ago
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