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ahrayia [7]
3 years ago
8

Which expression represents these words?

Mathematics
1 answer:
Daniel [21]3 years ago
7 0

Answer:

(32 ÷4) +8

Step-by-step explanation:

More than means it comes after

quotient of 32 and 4

32÷ 4

8 more than

(32 ÷4) +8

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BRAINLIEST ASAP! PLEASE HELP ME :)
Margaret [11]

Answer:

\large \boxed{\text{3.0 mi/h}}

Step-by-step explanation:

            Let x = the current of the river

Then 21 + x  = the speed going downstream (with the current)

  a nd 21 - x  = the speed going upstream (against the current)

Distance = speed × time

           d = st

            t = d/s

Time going downstream = time going upstream

\begin{array}{rcll}\dfrac{2.4}{21+ x}& = & \dfrac{1.8}{21 - x} &\\\\2.4& = &(21 + x) \dfrac{1.8}{21 - x} &\text{Multiplied each side by (21 + x)}\\\\2.4(21 - x)& = & 1.8(21 + x) &\text{Multiplied each side by (21 - x)}\\50.4 - 2.4x&=& 37.8 + 1.8x&\text{Removed parentheses}\\50.4 & = & 37.8 + 4.2x & \text{Added 2.4x to each side}\\\end{array}\\

\begin{array}{rcll}12.6 & = & 4.2x & \text{Subtracted 37.8 from each side}\\x & = &\dfrac{12.6}{4.2}&\text{Divided each side by 4.2}\\\\ & = &\mathbf{3.0}& \text{Simplified}\\\\\end{array}\\\text{The current is $\large \boxed{\textbf{3.0 mi/h}}$}

Check:

\begin{array}{rcl}\dfrac{2.4}{21+ 3}& = & \dfrac{1.8}{21 - 3}\\\\\dfrac{2.4}{24}& = & \dfrac{1.8}{18}\\\\0.10 & = & 0.10\\\end{array}

OK

4 0
3 years ago
Joelle spent 1 1/2 hours studying for her science test. Rileigh studied 3/4 for of Joelle‛s time. What fraction of an hour did R
ale4655 [162]

Answer: 1¹/₈ hours

Step-by-step explanation:

Joelle spent 1¹/₂ hours reading and Rileigh spent 3/4 of that time.

To find out how much time Rileigh spent, multiply the fractions but first convert the improper fraction to a proper fraction:

= 1¹/₂ = 3/2

= 3/2 * 3/4

= 9/8

= 1¹/₈ hours

7 0
3 years ago
Find the radius of a circle whose area is 576π m²
k0ka [10]

Answer:

r = 24 m

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

Here A = 576π , then

πr² = 576π ( divide both sides by π )

r² = 576 ( take the square root of both sides )

r = \sqrt{576} = 24

7 0
3 years ago
The graph shown represents the water level in Kayla’s bathtub as a function of time:
katrin [286]

Kayla soaked in the bathtub.

<u>Step-by-step explanation</u>:

This diagram is included 5 direct segments.  The slope of each portion is the rate at which the level of water in the tub is changing. A rising line says that the water level is rising.  

A falling line says that the water level is falling. If the water level isn't changing, at that point the slant of the line is zero ... it's a horizontal section.  

Before we even glance at the story, we should take a look at the chart:  

Portion A:  the tub is vacant at time zero, at that point rises gradually  for around 8 minutes;  

Portion B:  out of nowhere at 8 minutes, the level ascents by half  

(from level 20 to level 30) in a short time or less;  

Portion C:  for the following 15 minutes, the level doesn't change;  

Portion D:  the water drops rapidly to level-20 out of 2 minutes or less;  

Portion E:  in around 8 minutes, the water level drops gradually to zero.  

On the off chance that someone disclosed to us, this was the diagram of a young lady washing up,  

we could pretty much peruse the story from the diagram:  

A:  filling the tub from the faucets ... takes 8 minutes;  

B:  the individual gradually and cautiously getting into the tub, making the level ascent  

C:  the individual in the tub;  

D:  the individual gradually and cautiously escaping the tub;  

E:  the tub exhausting in a short time.  

Presently I'm prepared to take a gander at the decisions.  

OK.  I see that the inquiry is just posing about fragment C.  

K ran water to fill the tub ... No.  The level isn't evolving.  

K exhausted the tub ... No.  The level isn't evolving.  

K got into the tub ... No.  The level isn't evolving.  

K soaked the bath ... Yes!  The level isn't evolving.

8 0
4 years ago
Suppose f(x) = x2. What is the graph of g(x) = {f(x)?
sukhopar [10]

Answer:

f(x)=x2,g(x)=f(3x)=(3x)2=9x2

Now to graph y=9x2. This is a parabola (U-shape), vertex at (0, 0), symmetric around y  axis. When x=1/3 or -1/3, then y=1.

Hope this helps! :))

4 0
3 years ago
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