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2 years ago

How far along a motorway would you travel if you drove at 70 mph for 4 hours

Mathematics

2 answers:

MaRussiya [10]2 years ago

5 0

Answer:

280 miles

Step-by-step explanation:

in one hour, you would travel 70 miles because you are going at the speed of 70mph

so to find out how far you go in 4 hours you would multiply 70(mph)×4(hrs) which would be?

280 miles

pashok25 [27]2 years ago

5 0

Step-by-step explanation:

Distance=speed x time

Speed=70mph

Time=4 hours

Distance=70 x 4

Distance=280m

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The equations of two functions are y=-21x+9 and y=24x+8 which function is changing more quickly? Explain

antoniya [11.8K]

Given:

The equations are

$y=-21x+9$

$y=24x+8$

To find:

Which function is changing more quickly.

Solution:

The slope intercept form of a line is

$y=mx+b$

Where m is slope and b is y-intercept.

On comparing $y=-21x+9$ with the slope intercept form, we get

$m_1=-21$

$|m_1|=|-21|$

$|m_1|=21$

On comparing $y=24x+8$ with the slope intercept form, we get

$m_2=24$

$|m_2|=24$

Since, $|m_1|$ , it means the absolute rate of change of second function is greater than the first function.

Therefore, the second function is changing more quickly.

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3 years ago

2. Find the Perimeter AND Area of the figure below. 5 in. 6 in. 8 in. 9 in.

Katena32 [7]

Area: 64 in.
Perimeter: 102 in.

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2 years ago

Ignore circled one and work it out please

mash [69]

Answer:

a. $\frac{(x-7)}{x^2+x-30}$

Step-by-step explanation:

$\huge \frac{x^2-3x-28}{(x^2+10x+24)(x-5)} \\\\\huge {=\frac{x^2-7x+4x-28}{(x^2+6x+4x+24)(x-5)}}\\\\\huge {=\frac{x(x-7)+4(x-7)}{\{x(x+6)+4(x+6)\}(x-5)}}\\\\\huge {=\frac{(x-7)(x+4)}{(x+6)(x+4)(x-5)}}\\\\\huge {=\frac{(x-7)}{(x+6)(x-5)}}\\\\\huge {=\frac{(x-7)}{x^2+(6-5)x+6(-5)}}\\\\\huge {=\frac{(x-7)}{x^2+x-30}}$

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2 years ago

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Allisa [31]

Answer:

D. because sides of the parallelogram are equal and they do not have congruent .

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2 years ago

Books are packed into boxes of 90. 23 boxes on 1 crate. How many crates will be needed to pack 270000 books.

agasfer [191]

Answer:

130 crates

Step-by-step explanation:

270,000/90=3000/23

3000/23=130.43

rounded: 130 crates

6 0

2 years ago