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Andrew [12]
2 years ago
10

Please help it’s a test and I only have 50 minutes left

Mathematics
1 answer:
viktelen [127]2 years ago
5 0

Answer:

60

Step-by-step explanation:

X is equal to 60 degrees

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The total surface area of this cuboid is 112cm squared find the value of x
Liono4ka [1.6K]

Answer:

The height of cuboid is 3 cm

Step-by-step explanation:

Total surface area of cuboid  = 2lb+2bh+2hl

Length of cuboid = 10 cm

Width of cuboid = 2 cm

Let the height be x

Total surface area of cuboid  = 2(10)(2)+2(2)(x)+2(x)(10)

Total surface area of this cuboid is 112 cm squared

 2(10)(2)+2(2)(x)+2(x)(10)=112

40+4x+20x=112

40+24x=112

24x=112-40

24x=72

x=\frac{72}{24}

x=3

Hence the height of cuboid is 3 cm

5 0
2 years ago
R^2+8r=-7<br>solve the equation with the quadratic formula showing work
Yuliya22 [10]

Answer:

Step-by-step explanation:

r²+8r=−7

Step 1: Subtract -7 from both sides.

r²+8r−(−7)=−7−(−7)

r²+8r+7=0

Step 2: Use quadratic formula with a=1, b=8, c=7.

r=r=\frac{-b+or-\sqrt{-4ac}  }{2a}

r=\frac{-8+or-\sqrt{(8})^2-4(1)(7) }{2(1)}

7 0
3 years ago
5) BRAINLIEST AND 10+ POINTS! :)
yKpoI14uk [10]

Answer:

b) 1000x + 115

Step-by-step explanation:

C = 20y + 15

= 20(50x + 5) + 15

= 1000x + 100 + 15

= 1000x + 115

4 0
3 years ago
Read 2 more answers
Please help!! I don’t understand this. P.S. I had to do this on a separate piece of paper, so that’s why I have it on my noteboo
Temka [501]
I don’t get what your saying

Explain it for me
Step by step
3 0
3 years ago
How many 2 1/2 inch-long steel stakes can Curtis cut from a piece of steel that is 25 inches long?​
aleksley [76]
10 or u could do 25 divided by 2.5 is 10
7 0
2 years ago
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