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Naya [18.7K]
3 years ago
9

I dont understand this question

Mathematics
2 answers:
ollegr [7]3 years ago
8 0
The problem tells us that in 5 seconds, the person descended 65 feet.

Therefore, we can calculate how many feet the person descended in one second:
x = 65 \div 5 \\ x = 13

They descended 13 feet per second.
Because their altitude is decreasing, The unit rate would be negative: -13 feet per second
Stells [14]3 years ago
4 0

A parachutist descends 65 feet in 5 seconds.

To find the unit rate, you need to find how many feet the parachutist descends <u>per second(for 1 second)</u>


You can divide 65 by 5 to get the # of feet per second.

65/5 = 13


13 feet per second

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At a theme park, the admission price for children is $7 and the admission price for adults is $21. The total amount the theme pa
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Answer:

7x+21y=5439

x+y=305

Step-by-step explanation:

it's pretty self explanatory, right?

7 0
3 years ago
How can I turn -4/slope ,0/y-intercept into a slope intercept form equation
Rainbow [258]

Answer:

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Step-by-step explanation:

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y = - 4x (Answer)

4 0
3 years ago
Slope formula question (Algebra 2)
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7 0
3 years ago
3. Simplify.<br><br> 312⋅312 <br><br> 4. Rewrite n√xm<br><br> using a rational expression.
Dmitry_Shevchenko [17]

Answer:


Step-by-step explanation:

Left

As near as I can tell, the question is x^(1/2) * x^(1/2) = The bases are the same, so all you do is add the powers.

x^(1/2 + 1/2) = x^1 which is just x.

Right

The is another one where the work is hard to show. The numerator (m) of the fraction is the power and the denominator (n) is the root. That sentence is all the work there is.

So you would write \sqrt[m]{x^{n} } = x^{\frac{m}{n} }


6 0
3 years ago
Read 2 more answers
Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}&#10;&amount&concentration&&#10;\begin{array}{llll}&#10;concentrated\\&#10;amount&#10;\end{array}\\&#10;&-----&-------&-------\\&#10;\textit{first sol'n}&11&x&11x\\&#10;\textit{second sol'n}&4&0.55&2.20\\&#10;------&-----&-------&-------\\&#10;mixture&y&0.77&0.77y&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\begin{cases}&#10;11+4=y\implies 15=\boxed{y}\\&#10;11x+2.2=0.77y\\&#10;----------\\&#10;11x+2.2=0.77\cdot \boxed{15}&#10;\end{cases}

solve for "x"
6 0
4 years ago
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