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2 years ago

If a car travels 400 meters in 20 seconds how fast is it going?

Mathematics

2 answers:

kolezko [41]2 years ago

7 0

Answer:

B. 20 meters per second

Step-by-step explanation:

The car is going 400 meters in 20 seconds, let's simplify that!

STEP 1

400/20=20

( / stands for division)

For an easier understanding way, here:

There will be a picture attached to this answer, look at that for understanding better!

STEP 2

Now, to understand a bit better, the 400 gets divided into 20 by 20 times, and the 20 gets divided into 20 1 time. So, there fore.....

FINAL ANSWER:

We get the answer that if a car is moving 400 meters per 20 seconds, that means it is moving 20 meters per one second.

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Have a great day studying!

lesantik [10]2 years ago

5 0

20 meters per second

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Simplify : -2(3v -6) <br><br>with steps too please

Sauron [17]

Answer:

-6v - 12

v = -2

Step-by-step explanation:

Simplify:

Apply the rules of the distributed property by multiplying -2 and 3v and -2 and -6: -6v - 12

Solve:

Now that we have our simplified form, we can find what v is. First divide each side by -6 to cancel out the -6 next to v. It should now look like this: v = -2

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3 years ago

What is the product of 5 and 2/3

alukav5142 [94]

The product of 5 and 2/3 is 5.6666

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3 years ago

Read 2 more answers

Which system of equations could be graphed to solve the equation below? log Subscript 0. 5 Baseline x = log Subscript 3 Baseline

Vanyuwa [196]

You can use the fact that two expressions in equality can be considered to be equal to a third variable(not used in given context).

The system of equations that could be graphed to solve the equation given is

$y = \log_{0.5}(x)\\\\$
$y = \log_3(2+x)$

<h3>How can we form a system of equations from an equation?</h3>

Suppose the equation be $a = b\\$

Let there is a symbol $c$ such that we have $a = b = c$

It is because a and b are same measure (that is exactly what a = b means)

and we gave another name c to that measure.

Thus, we have

$a = c\\b = c$

in addition to $a = b\\$

<h3>Using the above method to find the system of equations needed</h3>

Since the given equation is $log_{0.5}(x) = log_2(2+x)$

The 2d graphs are usually expressed as $y = f(x)$ on X-Y plane.

Taking the equation's expressions equal to y, we get

$log_{0.5}(x) = log_2(2+x) = y$

or, we get system of equations as

$y = log_{0.5}(x)\\\\y = log_3{(2 + x)}$

Their graph is plotted below. The intersection point of both curves is the solution to the given equation as it satisfies both the equations of the system of equations formed from the given equation.

Thus,

The system of equations that could be graphed to solve the equation given is

$y = \log_{0.5}(x)\\\\$
$y = \log_3(2+x)$

Learn more about solutions to system of equations here:

brainly.com/question/14550337

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3 years ago

Find the volume of the composite space figure to the nearest whole number.

Romashka [77]

Answer:

d. 944 mm^3

Step-by-step explanation:

The area of a circle is given by ...

A = πr² . . . . . where r is the radius, half the diameter

The area of a circle with diameter 9 mm is ...

A = π(4.5 mm)² = 20.25π mm²

The area of the semi-circular end of the prism is half this value, or ...

semicircle area = (1/2)(20.25π mm²) = 10.125π mm² ≈ 31.809 mm²

The area of the rectangular portion of the end of the prism is the product of its width and height:

A = wh = (9 mm)(6 mm) = 54 mm²

Then the base area of the prism is ...

base area = rectangle area + semicircle area

= (54 mm²) +(31.809 mm²) = 85.809 mm²

This base area multiplied by the 11 mm length of the prism gives its volume:

V = Bh = (85.809 mm²)(11 mm) ≈ 944 mm³

The volume of the composite figure is about 944 mm³.

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3 years ago

Please help me Find X

solmaris [256]

The labeled angle is what's called an inscribed angle. There's a theorem (fittingly called the inscribed angle theorem) that says the measure of this angle is half the measure of the circular arc that it subtends.

In this case, the angle is subtended by an arc measuring 180°. So

(4x + 6)° = 1/2 • 180°

4x + 6 = 90

4x = 84

x = 21

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2 years ago