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2 years ago

10

Help me please I’m not smart -

1 answer:

iVinArrow [24]2 years ago

5 0

Don’t use any links, there scams!

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Mr. Moore drove the first half of his journey at an average speed of 96 km/h for 2 hours. He then drove the remaining half of hi

kupik [55]

<em>Answer:</em>

<em>2h 15m</em>

<em>Step-by-step explanation:</em>

<em>If he drove 96 kilometers per hour for the first two hours, then he traveled 192 kilometers in two hours, meaning that the full trip is 384 kilometers.</em>

<em>192/80 = 2.4</em>

<em>Mr. Moore took 2 hours and 15 minutes to finish his trip.</em>

<em>Hope this helps. Have a great day.</em>

7 0

3 years ago

Simplify the expression so there is only one positive power for each base. (5^-2 x 4^-4)^-2

Katen [24]

Answer:

Step-by-step explanation:

$(5^{-2}$ × $4^{-4}$ $)^{-2}$

= $(5^{-2}$ $)^{-2}$ x $(4^{-4})^{-2}$ ∴ $(a.b)^{n} =a^{n} .b^{n}$

= $5^{-2.-2}$ x $4^{-4 . -2}$ ∴ $(a^{n} )^{m}$ = $a^{nm}$ // here m is an exponent of $a^{n}$ .

= $5^{4}$ x $4^{8}$

4 0

3 years ago

pogonyaev

RST is not a right triangle.

<h3>What is a Triangle ?</h3>

A Triangle is a polygon with three sides , three angles and three vertices.

It is given in the question that

triangle RST with coordinates R(2, 3), S(4, 4), and T(5, 0)

It has to be determined that if the triangle is a right angled triangle ,

If we plot the triangle on the coordinate plane , it can be easily seen that the triangle is not a right angled triangle ,

It can also be proved by measuring the length of the sides that if the sum of the squares of the sides is equal to the square of the largest side , then it will be a right triangle or not .

To know more about Triangle

brainly.com/question/2773823

#SPJ1

7 0

2 years ago

A coffee shop sold 7 cups,3 pints, and 9 quarts of coffee. Express the number of cups of coffee sold in base 2

sweet-ann [11.9K]

Answer:

The total number of cups of coffee sold are 51 which can be expressed in base $2$ as $110011$ .

Step-by-step explanation:

Considering the following information

$1$ cup = $1$ cup

$7$ pints = $14$ cups ∵ $1$ pint = $2$ cups
$9$ quarts = $36$ cups ∵ $1$ quart = $4$ cups

So, total number of cups will be = $51$ cups

Converting $51$ to the base $2$

Divide $51$ by $2$ by repeatedly and observe remainder

$\frac{51}{2}=25\quad \mathrm{Remainder}\quad \:1$

$\frac{25}{2}=12\quad \mathrm{Remainder}\quad \:1$

$\frac{12}{2}=6\quad \mathrm{Remainder}\quad \:0$

$\frac{6}{2}=3\quad \mathrm{Remainder}\quad \:0$

$\frac{3}{2}=1\quad \mathrm{Remainder}\quad \:1$

$\frac{1}{2}=0\quad \mathrm{Remainder}\quad \:1$

Read and observe the remainder from top to bottom would yield $110011$ .

Therefore, the total number of cups of coffee sold are 51 which can be expressed in base $2$ as $110011$ .

<em>Keywords: base 2, number</em>

<em> Learn more about number bases from brainly.com/question/13725148</em>

<em> #learnwithBrainly</em>

8 0

3 years ago

Element X decays radioactively with a half life of 6 minutes. If there are 790 grams of Element X, how long, to the nearest tent

frosja888 [35]

Answer:

It takes 27 minutes for the element to decay to 35 grams

Step-by-step explanation:

Given:

Initial amount = 790 grams

Final amount = 35 grams

Half life = 6 minutes

To find:

Time taken for the element to reduce into 35 grams = ?

Solutions

Time taken = $half life \times \frac{ log(\frac{ initial amount}{final amount})}{log(2)}$

On substituting the values given, Time taken

= $6 \times \frac{log(\frac{790}{35})}{log(2)}$

= $6 \times \frac{log(22.57)}{log(2)}$

= $6 \times 4.496$

= 26.97

= 27 minutes

7 0

3 years ago