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Diano4ka-milaya [45]
3 years ago
7

5a please :) I don't know the formula

Mathematics
1 answer:
Naddika [18.5K]3 years ago
3 0
S.A = (2×area of base) + area of lateral faces
Area of lateral faces = area of base × height

Area of lateral faces = 19×4×8=608
S.A = (2×19×4)+608
=760
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Solve for x and y. 3x+8y=20. 5x+3y=23
GrogVix [38]

Answer:

x=4 and y=1

Step-by-step explanation:

Equation 1) 3x+8y=20  

Equation 2) 5x+3y=23

Equation 1) 5(3x+8y=20 )  

Equation 2) 3(5x+3y=23)

15x+40y=100

15x+9y=69

(Take away 40y from 9y and 100 from 69)

31y = 31

y=1

Substitute y=1 into equation 1)

3x+8=20

(Take away 8 from both sides)

3x=12

(Divide by 3)

x=4

6 0
3 years ago
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Dominik [7]

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3 years ago
What is the y-intercept form of -5x+y=-3
marshall27 [118]
-5×+y=-3
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4 0
3 years ago
​When CP = Rs 1250 and SP = Rs 1500, find profit or loss percent ?
Alex Ar [27]

Answer:

profit=20%

Step-by-step explanation:

profit%=sp-cp/cp×100%

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6 0
2 years ago
For what value of k does the equation 6(x + 1) + 2 = 3(k5x + 1) + 3 have no solution?
NARA [144]

Answer:

k = (6/15)

Step-by-step explanation:

The equation is:

6*(x + 1) + 2 = 3*(k*5*x + 1) + 3

To have no solutions, we need to have something like:

x + 7 = x + 4

where we can remove x in both sides and end with

7 = 4

So this equation is false, meaning that there is no value of x such that this equation is true, then the equation has no solutions.

First, let's try to simplify our equation:

6*(x + 1) + 2 = 3*(k*5*x + 1) + 3

6*x + 6 + 2 = 3*k*5*x + 3*1 + 3

6*x + 8 = 15*k*x + 6

if 15*k = 6, then the system clerly has no solution.

then:

k = 6/15

then we get:

6*x + 8 = (6/15)*15*x + 6

6*x + 8 = 6*x + 6

8 = 6

The system has no solutions.

8 0
2 years ago
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