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2 years ago

Pleaseeeeee help me with this.

Mathematics

2 answers:

Ghella [55]2 years ago

8 0

Joe mama /$/8182$:&,9:2!,8,!27:

Phoenix [80]2 years ago

7 0

Answer:

Step-by-step explanation:

2 is like terms

1 one is coeff

3 is const

4 is expression

5 is trem

6 is variable

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The marked price of a machine is $1200. How much will it cost if there is a discount of 20%? *

fredd [130]

Answer:

discount amount=20%of mp

=240

now sp=mp-discount=1200-240=960

3 0

3 years ago

The time required for an outlet pipe to an empty a tank is inversely proportional to the cross-sectional area of the pipe. A pip

NNADVOKAT [17]

$\bf \qquad \qquad \textit{inverse proportional variation}
\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf \stackrel{\textit{\underline{t}ime to empty a tank is inversely proportional to \underline{c}ross-sectional area}}{t=\cfrac{k}{c}}
\\\\\\
\textit{we also know that }
\begin{cases}
c=113.0\\
t=6.4
\end{cases}\implies 6.4=\cfrac{k}{113}\implies 723.2=k
\\\\\\
therefore\qquad \boxed{t=\cfrac{723.2}{c}}
\\\\\\
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5 0

4 years ago

Simplify 2x2+20x+32/x2-2x-80

Elina [12.6K]

2 (x+2)/(x-10) is the simplified answer

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3 years ago

Will a pair of 6 feet 11 inch long skis fit in a wardrobe that is 3 feet long, 2 feet wide and 6 feet high?

JulsSmile [24]

Answer:

Step-by-step explanation:

Length of a pair of skis = 6 feet 11 inches

Maximum length of a the skis that can be fitted in a wardrobe is along the diagonal of the wardrobe.

From the picture attached,

BC² = 3² + 2² [By Pythagoras theorem]

BC = √(13)

By applying Pythagoras theorem in ΔABC,

AB² = AC² + BC²

AB² = 6² + (√13)²

= 36 + 13

AB = √49

Ab = 7 feet

Since, "diagonal length of the wardrobe is more than the length of skis,

skis can be fitted"

3 0

3 years ago

What is the measure of secant dc

harina [27]

Answer:

CD = 3

Step-by-step explanation:

Given 2 secants from an external point to the circle, then

CB × CA = CD × CE , that is

4 × (4 + 6.5) = CD × 14

4 × 10.5 = 14CD

42 = 14CD ( divide both sides by 14 )

CD = 3

4 0

3 years ago