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3 years ago

Write 4.239.x10^6 in decimal form

Mathematics

2 answers:

kaheart [24]3 years ago

8 0

The answer is 4,239,000 but I don’t know what you mean by decimal form.

xxMikexx [17]3 years ago

5 0

Answer:

4.239

Step-by-step explanation:

4,239,000 is 4.239 × 1,000,000 which is the same as 4.239×10^6

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The following table shows the distance from school as a function of time:

Rainbow [258]

Answer: last option.

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" is the y-intercept.

Find the slope of the line with this formula:

$m=\frac{y_2-y_1}{x_2-x_1}$

Choose two points from the table and substitute the coordinates into the formula. Then, the slope is:

$m=\frac{32-36}{3-0}=-\frac{4}{3}$

By definition, the line intersects the y-axis when the value of "x" is zero. So, based on the table, the y-intercept is:

$b=36$

Then the equation of the line is:

$y=-\frac{4}{3}x+36$

The line intersects the x-axis when the value of "y" is zero, then substituting $y=0$ into the equation of this line, and solving for "x", you get:

$0=-\frac{4}{3}x+36\\\\(-36)(-\frac{3}{4})=x\\\\x=27$

So, the point of intersection with the x-axis is:

$(27,0)$

Since the table shows the distance from school as a function of time, you can conclude that meaning of the x-intercept in this scenario is: "The distance away from the school".

4 0

3 years ago

Read 2 more answers

WILL GIVE BRAINLIEST A jewelry box is in the shape of a right rectangular prism with a length of 8.25 cm, a width of 5.5 cm, and

Aleksandr [31]

Step 1: find the area of the base
A=l*w = 8.25*5.5 = 45.375

Step 2: find the perimeter of the base
P=2l+2w = 2(8.25) + 2(5.5) = 16.5 + 11 = 27.5

Step 3: find the surface area of the prism
SA=2A+Ph = 2(45.375) + 27.5(4.5) = 90.75 + 123.75 = 214.5

Hope this helps

8 0

3 years ago

Read 2 more answers

A cookie recipe calls for 1 2/3 of sugar if you plan on changing the recipe to make it 2 1/2 times as much how many cups of suga

Dimas [21]

Answer:

$4\frac{1}{6}\ cups$

Step-by-step explanation:

we know that

The recipe calls for 1 2/3 of sugar

To make 2 1/2 times the recipe

Multiply 2 1/2 by 1 2/3

Convert mixed numbers to an improper fraction

$1\frac{2}{3}=\frac{1*3+2}{3}=\frac{5}{3}\ cups$

$2\frac{1}{2}=\frac{2*2+1}{2}=\frac{5}{2}$

$\frac{5}{2}(\frac{5}{3})=\frac{25}{6}\ cups$

Convert to mixed number

$\frac{25}{6}=\frac{24}{6}+\frac{1}{6}=4\frac{1}{6}\ cups$

8 0

3 years ago

Rectangle A is a scale drawing of Rectangle B and has 25% of its area. If rectangle A has side lengths of 4 cm and 5 cm , what a

SpyIntel [72]

Answer:

8 cm and 10 cm

Step-by-step explanation:

Hello, <em> </em>I can help you with this.

Step 1

According to the question there are two rectangles A and B,

Rectangle A is a scale drawing of Rectangle B and has 25% of its area

in other words

$Area_{A}=0.25*Area_{B} (Equation\ 1)\\$

Step 2

Let

Rectangle A

length (1)= 4 cm

length (2)= 5 cm

$Area_{A}=4\ cm * 5\ cm\\Area_{A}=20\ cm^{2}$

put this value into equation 1

$Area_{A}=0.25*Area_{B} (Equation\ 1)\\\\20\ cm^{2} =0.25*Area_{B} \\divide\ each\ side\ by\ 0.25\\\frac{20\ cm^{2} }{0.25}=\frac{0.25}{0.25}*Area_{B}\\ Area_{B}=80\ cm^{2}$

Now, we know the area of rectangle B, to know its length we need to formule other equation

Step 3

$Area_{B}=80\ cm^{2}\\length (1B)*length (2B)=80\ cm^{2} (equation\ 2)\\$

the ratio between the lengths must be constant, so the ratio of A must be equal to ratio in B, then

$\frac{length(1A)}{length(2A)}=\frac{length(1B)}{length(2B)} \\\\\\frac{4}{5}= \frac{length(1B)}{length(2B)}\\0.8=\frac{length(1B)}{length(2B)}\\length(1B)=0.8*length(2B) (Equation 3)$

Step three

using Eq 1 and Eq 2 find the lengths

put the value of length(1B) into equation (2)

$length (1B)*length (2B)=80\ cm^{2} (equation\ 2)\\\(0.8*length(2B)) (*length (2B)=80\ cm^{2} \\\\0.8*(length (2B))^{2} =80\ cm^{2}\\(length (2B))^{2} =\frac{80\ cm^{2}}{0.8} \\(length (2B))^{2}=100\\\sqrt{(length (2B))^{2}}=\sqrt{100\ cm^{2}} \\ length (2B)=10\ cm$

Now, put the value of length(2B) into equation 3 to know length (1B)

$length(1B)=0.8*length(2B)\\length(1B)=0.8*10\ cm\\length(1B)=8 cm$

I really hope this helps you, have a great day.

6 0

3 years ago

Factor the trinomial:<br> 5x^2 + 12x + 7

DaniilM [7]

<h2>Hey mate,</h2><h3>I have attached the answer below</h3><h3>Hope it will help you...</h3>

7 0

3 years ago