you own a house cleaning business. it takes you 2 hours and 45 minutes to clean a house. you have 3 houses to clean tomorrow. how long would it take you to clean all three houses

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Answer 1

Answer: 495 minutes. Well you will have to work put how many hours that makesim sorry

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A triangle has side lengths of 5, 9 and 12. Is it right acute or obtuse?

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$a\leq b\leq c\ (a;b;c-side\ lengths\ of\ the\ triangle)\n\nthere\ is\ a\ relationship:\n\na^2+b^2=c^2-right\ triangle\n\na^2+b^2 < c^2-obtuse\ triangle\n\na^2+b^2 > c^2-acute\ triangle$

$a=5;\ b=9;\ c=12\n\na^2+b^2=5^2+9^2=25+81=106\n\nc^2=12^2=144\n\na^2+b^2 < c^2\n\nAnswer:Obtuse\ triangle$

The volume of cylinder is 448 pie cm cube and height 7 cm find its radius

Answers

Answer:

$r =\bf 8 \space\ cm$

Step-by-step explanation:

The formula for volume of a cylinder is as follows:

$\boxed{Volume = \pi r^2 h}$

where:

• r = radius (? cm)

• h = height (7 cm).

Substituting the values into the formula:
$448 \pi = \pi * r^2 * 7$

Now solve for $r$ :

⇒ $r^2 = (448 \pi )/(\pi * 7)$

⇒ $r = √(64)$

⇒ $r =\bf 8 \space\ cm$

$\huge\mathbb{ \underline{SOLUTION :}}$

Given:

$\longrightarrow\bold{Volume= 449 \pi cm^3}$

$\longrightarrow\bold{Height= 7cm}$

$\longrightarrow\sf{V= \pi r^2 h}$

$\longrightarrow\sf{448 \pi= \pi r^2 \cdot 7}$

$\longrightarrow\sf{448=</p><p>7r^2}$

$\longrightarrow\sf{r^2= (448)/(7) }$

$\longrightarrow\sf{r^2=64}$

$\huge \mathbb{ \underline{ANSWER:}}$

$\longrightarrow\sf{r= 8cm}$

Find the surface area of a bar of soap if the diameter is 5 cm and the height is 2cm .

Answers

Please see the pic, I'd solved in it.

Given that:
Diameter = 5 cm
which means,
Radius= $(diameter)/(2)$ = $(5)/(2)$ = 2.5 cm (radius is half the diameter)
and Height = 2 cm
We can assume that the shape is cylindrical

Formula of the Surface Area of a Cylinder
=2 $\pi$ r² + 2 $\pi$ rh
=2 $\pi$ (2.5)² + 2 $\pi$ (2.5)(2)
=12.5 $\pi$ + 10 $\pi$
=22.5 $\pi$ cm² (in terms of $\pi$ )
=70.69 cm² ≈ 70.7 cm²

An average football field has the dimensions of 160 ft by 360 ft. If the expressions to find these dimensions were (3x + 7) and (7x + 3) what value of would give the dimensions of the football field ?

Answers

Answer:

Step-by-step explanation:

Because that's what it is i might be wrong tho lol

ANSWER:47

HOW I GOT THE ANSWER:I think it the best because it make most sense and it seems correct hope this helps u it took long to get

Factorise- 6y-15y^2
HELP

Answers

We will take the common terms in the expressions-

Here in the expression, 3y is a common term.
So,

$6y - 15y^(2)$

$3y(2 - 5y)$

So, the answer is $3y(2 -5y)$