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2 years ago

Mary drove 715 miles in 13 hours, At the same rate, how many miles would she drive in 9 hours?

Mathematics

2 answers:

lisov135 [29]2 years ago

6 0

Answer:

495 miles

Step-by-step explanation:

ruslelena [56]2 years ago

4 0

Answer:

Step-by-step explanation:

13hrs=715miles

9hour=?miles

715×9/13

=495miles

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A line with a slope of 0.20 passes through

zaharov [31]

Answer:

y=0.2x-20

Step-by-step explanation:

1) the common view of the line in the slope-intercept form is:

y=s*x+i, where s - the value of the slope (it is 0.2 according the condition), i - the value of intercept (to be calculated);

y=0.2*x+i.

2) if to substitute the given coordinates (1.25;-17.5) into the common view, then:

-17.5=1.25*0.2+i;

it is possible to calculate the value of 'i': i= -20.

3) if the slope=0.2, the intercept= -20, then the required equation of the line is:

y=0.2x-20.

8 0

3 years ago

Please help and good night

lana66690 [7]

Answer:

(7) n = ⁴/₃

(8) x = -5

(9) d = ³/₂

(10) v = -20

Step-by-step explanation:

(7) $n-\frac{8}{9} = \frac{4}{9}$

$n-\frac{8}{9} = \frac{4}{9} \\\\Collect \ similar \ terms \ together\\\\n = \frac{4}{9} + \frac{8}{9} \\\\n = \frac{4+8}{9} \\\\n = \frac{12}{9} \\\\n = \frac{4}{3}$

(8)

$\frac{3}{2} + \ x = -\frac{7}{2}\\\\collect \ similar \ terms \ together\\\\x = -\frac{7}{2} -\frac{3}{2} \\\\x = \frac{-7-3}{2} \\\\x = \frac{-10}{2} \\\\x = -5$

(9)

$\frac{6}{5} = \frac{d}{(\frac{5}{4} )} \\\\cross \ and \ multiply\\\\5d = 6(\frac{5}{4} )\\\\5d = \frac{30}{4} \\\\d = \frac{30}{4\times 5} \\\\d = \frac{30}{20} \\\\d = \frac{3}{2} \\\\d = 1\frac{1}{2}$

(10)

$-\frac{1}{8} v = \frac{5}{2} \\\\\frac{-v}{8} = \frac{5}{2} \\\\cross \ and \ multiply\\\\-2v = 40\\\\-v = \frac{40}{2} \\\\-v = 20\\\\v = -20$

6 0

2 years ago

A polynomial function with leading term 8x ^9 has a degree of what?<br>

agasfer [191]

Answer:

Step-by-step explanation:

hi! if the leading term is 8x^9, this means that this is the term with the highest power. therefore, its degree is 9.

7 0

3 years ago

The total cost for 8 bracelets,including shipping was $54. the shipping charge was $6.

nevsk [136]

Im pretty sure it would be 54÷ b- 6 if your looking for only the cost of the braclets nothing else.

4 0

3 years ago

Read 2 more answers

4th term of (4x-y)^9

Neko [114]

Now, let's do the same as we did for the previous one here.

$\bf (4x-y)^9\implies 
\begin{array}{llll}
term&coefficient&value\\
-----&-----&-----\\
1&+1&(4x)^9(-y)^0\\
2&+9&(4x)^8(-y)^1\\
3&+36&(4x)^7(-y)^2\\
4&+84&(4x)^6(-y)^3
\end{array}$

notice again, how did we get 84 for the 4th element's coefficient? well 36 * 7 / 3. and so on. And you can just expand it from there.

3 0

3 years ago

Mary drove 715 miles in 13 hours, At the same rate, how many miles would she drive in 9 hours?​

Mary drove 715 miles in 13 hours, At the same rate, how many miles would she drive in 9 hours?