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erma4kov [3.2K]
2 years ago
8

Please help meeeeeeeeeeeeeee

Mathematics
2 answers:
MA_775_DIABLO [31]2 years ago
6 0

Answer:

1) 4 cm

2) 7cm

3) 8 1/6

Step-by-step explanation:

1)

SA = 2(w*l)+2(w*h)+2(l*h)

228 = 2(9*6)+2(9*h)+2(6*h)

2(9*6)+2(9*h)+2(6*h) = 228

30h + 108 = 228

30h = 228-108

30h = 120

h = 4

2)

V = l*w*h

64h = 448

h = 7

3)

V_1 = 0.12V_2

0.98V_2 = \frac{0.98}{0.12}V_1 = \frac{98}{12}V_1 = \frac{49}{6}V_1 = 8\frac{1}{6}

stepladder [879]2 years ago
3 0

Answer:

multiply it by 2

Step-by-step explanation:

You might be interested in
Please help I don’t understand.... I will give brainliest to first and I will thank you!
Stolb23 [73]
To find the answer we can break the figure into two parts: a rectangle and a semi circle.

The perimeter of the rectangle:

(10+4)×2

=28 ft

The perimeter of the semi circle:

perimeter of a circle: 2×兀×radius

(The radius: 4/2)

We divide the perimeter by two as it is a semi circle,which is half the circumferece perimeter of a circle.

[2(3.14)(4/2)] / 2

=6.28 ft

We can then add up the numbers to find the answer, and remember that 4 cm is overlapped:

28+6.28-4

=30.28ft

Therefore the answer is 30.28ft.

Hope it helps!
5 0
3 years ago
Jane is opening a savings account with an initial deposit of $100. The bank offers a 5%
yKpoI14uk [10]

Answer:

105 dollars after a year

Step-by-step explanation:

I = (100)(0.05)(1)

I = 5

4 0
2 years ago
What is the product of z1 and z2 if
MaRussiya [10]

Answer:

308[cos(45) + isin(45)]

Step-by-step explanation:

z1×z2:

Modulus: r1 × r2

= 7×44 = 308

Argument: theta1 + theta2

= -70 + 115 = 45

z1z2 = 308[cos(45) + isin(45)]

Or

z1z2 = 154sqrt(2) + (i)154sqrt(2)

sqrt: square root

8 0
3 years ago
14 = 2y/5 what is the solution?
Gnom [1K]

Answer:

y=35

Step-by-step explanation:

y in (-oo:+oo)

14 = (2*y)/5 // - (2*y)/5

14-((2*y)/5) = 0

(-2/5)*y+14 = 0

14-2/5*y = 0 // - 14

-2/5*y = -14 // : -2/5

y = -14/(-2/5)

y = 35

y = 35

5 0
3 years ago
Use f(x) = x +5 and g(x) = 2x.
NemiM [27]
2x+10 is the correct answer.
4 0
3 years ago
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