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Eva8 [605]
3 years ago
10

How to find the answer to that

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0

Answer:

1. 31.25 square m, 2. S=478 square m, 3. 6.25 square m

Step-by-step explanation:

------------------- Surface Area of the Rectangular Prism(2ND ANSWER)

S=2(lw)+2(lh)+2(wh)

S=2(11*9)+2(7*11)+2(7*9)

S=2(99)+2(77)+2(63)

S=198+154+126

S=478 square m

--------------------- Surface area of Cube(1ST ANSWER)

S=6(lw) -2.5^2

S=6(6.25)-6.25(overlapping area A)

S=5(6.25)

S=31.25 square m

-------------------------------------------------- Overlapping area A(3RD ANSWER)

-> 6.25 square m

--------------------------------------------------- Surface area of composite figure(4th ANSWER)

=478+37.5-2(2.5)

<h2>Please Mark me Brainly, Thank You!</h2>
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Matilda has 19 nickels, 43 dimes, 24 quarters, and 14 fifty-cent pieces. How
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Answer:

1125 cent or 11.25

Step-by-step explanation:

19*5=95 43*10=430

7 0
3 years ago
What digit is in the ten thousands place in the number 925,634,780?
Ludmilka [50]

Answer:

3 because pretend the rest of the numbers are not there it is 3

3 0
3 years ago
Find the Least Common<br>Multiple of 26 and 38.​
Drupady [299]

Answer:

494

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
2. If AB = 4x + 9. BC = 5x + 2, and AC = 56, then find the value for . AB, BC.<br> A<br> B
inysia [295]

Answer:

AB=29; BC=27

Step-by-step explanation:

So they told us AB=4x+9 and that BC=5x+2, and AC=56 , now to help with the question you can draw this information on a number line. Now on a number you can see that basically AC=AB+BC.

So you would write it as such,,

4x+9+5x+2=56

Combine like terms

9x+11=56

Now you have to isolate the x by itself but first get rid of the 11.

9x+11-11=56-11

You would get

9x=45

Here you can divide 9 by both sides to isolate x.

9x/9=45/9

{x=5}

Now to find the value for both substitue x in the equations for both

1. AB=4x+9 where x is 5

4(5)+9 =AB

20+9 =AB

29=AB

You would do the same with BC

2. BC= 5x+2 where x is 5

5(5)+2= BC

25+2= BC

27=BC

If you want to check your answers you can just substitute x for 5 in the first equation we did where AC=AB+BC

6 0
4 years ago
A scientist has two solution which she labelled, solution A and solution B, each continue salt,she knows that solution A is 65%
Lorico [155]
A = oz of the solution A

b = oz of the solution B



The scientist knows that solution A is 45% salt and solution B is 95% salt. She wants to obtain 80 ounces of a mixture that is 65% salt.



a + b = 80



0.45a + 0.95b = 0.65*80



by solving the above system of equations you'll find····



a = 48 oz



b = 32 oz

~I hope this helped~

If it doesn't make since, I can try to switch up the wording ^^

7 0
4 years ago
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