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AveGali [126]
3 years ago
7

Jacob makes the following statement:

Mathematics
2 answers:
timurjin [86]3 years ago
7 0
I believe it is B, however this question is kind of a trap.

Oxana [17]3 years ago
5 0
Its b this one was easy
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If y varies directly as x and inversely as z and y = 4 when x = 2 and z = 7, find y when x =
S_A_V [24]

Answer:

y = 28

Step-by-step explanation:

Given that y varies directly as x and inversely as z then the equation relating them is

y = \frac{kx}{z} ← k is the constant of variation

To find k use the condition y = 4 when x = 2 and z = 7, then

4 = \frac{2k}{7} ( multiply both sides by 7 )

28 = 2k ( divide both sides by 2 )

14 = k

y = \frac{14x}{z} ← equation of variation

When x = 6 and z = 3 , then

y = \frac{14(6)}{3} = 14 × 2 = 28

4 0
3 years ago
Help me answer this one answer
qwelly [4]

The standard formula for the circumference (C) of a circle in terms of its diameter (d) is ...

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3 years ago
Use distributive property to express 24+40
GREYUIT [131]
8(3+5)...they have the same factor which is 8..check
6 0
3 years ago
The height of a ball above the ground in feet is defined by the function h(t) = -16t Squared + 80t +3, where t is the number of
jasenka [17]
Plug in 2 for t.
=> -16*(2^2) +80*2 +3
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=> -64+163
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6 0
3 years ago
If f(x)=x^3−x, what is the average rate of change of f(x) over the interval [1, 5]? a)29.5 b)30 c)43 d)120
avanturin [10]
\bf slope = m = \cfrac{rise}{run} \implies 
\cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby 
\begin{array}{llll}
average~rate\\
of~change
\end{array}\\\\
-------------------------------\\\\
f(x)= x^3-x  \qquad 
\begin{cases}
x_1=1\\
x_2=5
\end{cases}\implies \cfrac{f(5)-f(1)}{5-1}
\\\\\\
\cfrac{[5^3-5]~-~[1^3-1]}{4}\implies \cfrac{125-5~~-~~0}{4}\implies \cfrac{120}{4}\implies 30
7 0
3 years ago
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