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Bas_tet [7]
4 years ago
8

[42 ÷ (2 + 3 • 2)] + [4 • (36 – 52)]

Mathematics
1 answer:
svetlana [45]4 years ago
3 0
[42 ÷ (2 + 3 • 2)] + [4 • (36 – 52)]
[42÷(2+6)]+[4×(-16)]
[42÷8]+[-64]
[5.25]+[-64]
5.25-64
-58.75
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Need answers ASSAP
ollegr [7]
Data:
r (radius) = 3.5 in
h (height) = 8 in
Adopt: \pi \approx3.14
V (volume) = ?
Ink cost per cubic inch = $0.05/in³
Total cost: ?

<span>Calculate the volume of the paint bucket (its formed being cylindrical), we have:
</span>V =  \pi *r^2*h 
V = 3.14 *3.5^2*8 
V = 3.14*12.25*8
\boxed{V = 307.72\:in^3}

<span>What was the total cost of the paint?

</span>price($)___measure(in³)
0.05 ---------- 1
y -------------- 307.72

It is made the rule of three: (<span>directly proportional)
</span>
\frac{0.05}{y} = \frac{1}{307.72}
multiply cross
1*y = 0.05*307.72
y = 15.386\:\to\:\boxed{\boxed{y\approx\$15}}\end{array}}\qquad\quad\checkmark

Answer:
<span>the total cost of the paint is $15</span>
7 0
3 years ago
If a figure can match itself in three postions what is the angle of roatation
ANEK [815]

Answer:

120 degrees

Step-by-step explanation:

360/3=120

8 0
3 years ago
Geometry- The base of a triangle is sqrt 18 cm and it’s height is sqrt 8 cm find it’s area.
inn [45]

Answer:

72 Centimeters

Explanation:

Formula for area: 1 /2 b · h

b = Base (18 cm.)

h = height (8 cm.)

1 / 2 Base: 9

height: 8

9 · 8 = 72

Therefore the area of the triangle is 72 centimeters

6 0
3 years ago
Identify the errors made in the finding the inverse of y= x^2 +12x
alex41 [277]

9514 1404 393

Answer:

  y was not substituted for every x

Step-by-step explanation:

To find the inverse of ...

  y = f(x)

you need to solve ...

  x = f(y)

Here, f(x) = x^2 +12x, so f(y) = y^2 +12y

This is not the expression we see on the right of ...

  x = y^2 +12x

Apparently y was not properly substituted into f(x).

5 0
3 years ago
Which is a solution to the equation 3x^2 + 2x − 20 = 2x^2 + 15?
pychu [463]

the answer is b)-7 or it could be 5

6 0
3 years ago
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