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3 years ago

Mona drove 40 miles per hour how long will it take Mona to drive 100 miles

Mathematics

1 answer:

seraphim [82]3 years ago

7 0

Answer:

2,5h

if she's driving at 40 miles per hour, that means in 2 hours she will have driven 80 miles plus 30 mins. for another 20 miles. In total - 2h 30mins.

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What is the value of the expression below when w = 3. 4w^2 - 7w - 8

Makovka662 [10]

<h2>Answer: w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110 </h2><h2> w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757</h2>

Step-by-step explanation: The prime factorization of 4320 is

2•2•2•2•2•3•3•3•5

To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).

√ 4320 = √ 2•2•2•2•2•3•3•3•5 =2•2•3•√ 30 =

± 12 • √ 30

√ 30 , rounded to 4 decimal digits, is 5.4772

So now we are looking at:

w = ( -40 ± 12 • 5.477 ) / -34

Two real solutions:

w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757

or:

w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110

MY HEAD HURTS!

3 0

3 years ago

Work out the size of one of the exterior angles

hodyreva [135]

Given Information :-

⠀

A polygon with 10 sides ( Decagon )

⠀

To Find :-

⠀

The value of one of the exterior angles

⠀

Formula Used :-

⠀

$\qquad \diamond \: \underline{ \boxed{ \pink{ \sf Exterior ~angle = \dfrac {360^\circ}{no. ~of~sides}}}} \: \star$

⠀

Solution :-

⠀

Putting the given values, we get,

⠀

$\sf \dashrightarrow Exterior ~angle = \dfrac{360 ^\circ}{10} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \frac{36 \cancel{0}^\circ}{ \cancel{10}} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \underline{ \boxed{ \frak{ \red{36^\circ}}}} \: \star \\ \\$

Thus, the value of the exterior angles of a Decagon is 36°.

⠀

$\underline{ \rule{227pt}{2pt}} \\ \\$

8 0

2 years ago

Read 2 more answers

Find the degree of this polynomial? 13-4ab+5a^3b

Anastasy [175]

Let's take a peek of each term, to be specific, the exponent of the variables only, to see what degree each term is

$\bf 13-4ab+5a^3b\quad 
\begin{cases}
13\impliedby \textit{no variable, degree is 0}\\
4ab\to 4a^1b^1\impliedby \textit{1+1, degree is 2}\\
5a^3b\to 5a^3b^1\impliedby\textit{3+1, degree is 4}
\end{cases}$

so...which term has the highest degree? well, that one, is the degree of the polynomial

7 0

2 years ago

Subtract: write each in simplest form. 1/2-1/4=

Zepler [3.9K]

1/2-1/4

Find its LCM which would be 4

So change the 1/2 to 2/4 and keep 1/4 the same since we already have the denominator we need so

2/4-1/4 = 1/4

3 0

2 years ago

In your own words, what is the difference between an equation and an expression?

otez555 [7]

Answer:

An expression doesn't have an defiant answer. While an equation does.

Yes, you can copy and paste saying its your own words.

Hope this helps! <3

6 0

2 years ago

Read 2 more answers