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Mumz [18]
3 years ago
7

.

Mathematics
2 answers:
soldi70 [24.7K]3 years ago
7 0
The answer is 80% i’m pretty sure
siniylev [52]3 years ago
6 0
The answer is a: 80%
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Jamie walks 3 miles in 39 minutes. On average, Jamie is waking 1 mile every __ minutes.
Alchen [17]

Answer:

Jamie is waking 1 mile every 13 minutes.

Step-by-step explanation:

8 0
3 years ago
Differentiate the function. f(x) = ln(25 sin^2(x))
tigry1 [53]
Use the chain rule.
Let u = 25sin²(x), such that dy/dx = dy/du · du/dx

\frac{dy}{dx} = \frac{1}{25sin^{2}(x)} \cdot 50cos(x) \cdot sin(x)
\frac{dy}{dx} = \frac{2cos(x) sin(x)}{sin^{2}(x)}

\frac{dy}{dx} = 2cot(x)
8 0
3 years ago
Graph the system of equations. {4x+4y=16 x+6y=−6 Use the Line tool to graph the lines.
tatiyna

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

4x+4y=16 -----> equation A

x+6y=-6 -----> equation B

we know that

The solution of the system of equations is the intersection point both graphs

In this problem

The intersection point is (6,-2)

therefore

The solution is the point (6,-2)

using a graphing tool

see the attached figure

5 0
3 years ago
Grampy $12 for 4 baseball packs James paid 28 for seven who got a better deal baseball card packs? And why
vitfil [10]

Answer:

Grampy

Step-by-step explanation:

                money      cards

Grampy=   $12             4 packs

 James=    $28            7 packs

12*2= 24 dollars and 8 packs

while James payed 28 dollars for 7 packs

So Grampy got a better deal.

7 0
3 years ago
An ellipse has a center at the origin, a vertex along the major axis at (0, 17), and a focus at (0, −8). Which equation represen
Marianna [84]
We know that
<span>Since the focus and vertex are above and below each other, rather than side by side, I know that this ellipse must be taller than it is wide.
</span>Then 
a²<span> will go with the </span>y<span> part of the equation
</span>Also, since the focus is 8 <span>units below the center, then </span><span>c = 8
</span>since the vertex is 17<span> units above, then </span><span>a = 17
</span>The equation b²<span> = a</span>²<span> – c</span>²<span> gives me
</span>b²=17²-8²-----> b²=225
the equation is
y²/a²+x²/b²=1------> y²/289+x²/225=1

the answer is
y²/289+x²/225=1

see the attached figure

7 0
3 years ago
Read 2 more answers
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