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3 years ago

Help pleasee I'm doing homework and i cannot understand this one and it's due soon

Mathematics

1 answer:

11111nata11111 [884]3 years ago

5 0

Answer:

2001.19

Step-by-step explanation:

V=πr^2h

π×7^2×13=2001.19

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Tammys desk had 7/12 grams of dust on it she wiped away 5/12 grams of the dust how many grams of dust are left on her desk write

nexus9112 [7]

Answer:

2/12

Step-by-step explanation:

7/12 -5/12 = 2/12

the number 2 can go into 2 once and 12 six times so you should get 1/6 as your answer

7 0

2 years ago

A rectangle is drawn so that the width is 5 feet shorter than the length. the area of the rectangle is 36 square feet. find the

velikii [3]

w x L = 36

w = L- 5

L x ( L-5 ) = 36

L^2 -5L -36 =0

<span>Use the quadratic formula

L= - b + radical b^2 - 4 (a)(c) divided 2.a

L= 5 + 13 / 2 = 18 /2 =9</span>

5 0

2 years ago

Help me in algebra please

Anit [1.1K]

First, u do -9+8x-4+8
Then, U simplify. The answer is 8x-5

3 0

2 years ago

From her window, Carmella looks up to the top of a neighboring building at an angle of 46°. Her

Vinil7 [7]

Answer:

$270.3\ ft$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

In the right triangle ADE

Find the value of h1

See the attached figure

h1=AD

$tan(25\°)=\frac{h_1}{180}$

Solve for h1

$h_1=(180)tan(25\°)\\h_1=83.94\ ft$

step 2

In the right triangle ABC

Find the value of h2

See the attached figure

h2=BC

$tan(46\°)=\frac{h_2}{180}$

Solve for h2

$h_2=(180)tan(46\°)\\h_2=186.40\ ft$

step 3

Find the height of the neighboring building

we know that

The height of the neighboring building is equal to

$h=h_1+h_2$

substitute the values

$h=83.94+186.40=270.34\ ft$

Round to the nearest tenth of a foot

$h=270.3\ ft$

7 0

3 years ago

Given s(x) = 2x - 3 and t(x) = 5x + 4. find the formula and domain for s(x) over t(x) and w(x) = t(x) over s(x)

attashe74 [19]

V(x) = (2x - 3)/(5x + 4) The domain is all Real numbers except x = -4/5, because if x = -4/5 the denominator would be zero and you cannot divide by zero.{x | x ∈ R, x ≠ -4/5} w(x) = (5x + 4)/(2x - 3)similarly, x ≠ 3/2so, {x| x ∈ R, x ≠ 3/2}

6 0

3 years ago