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2 years ago

Pls help me with this question it wold be great help its circumference

Mathematics

2 answers:

Anastaziya [24]2 years ago

7 0

The answer is circumference= 9.42m

Ivan2 years ago

6 0

Answer:

$C = 9.42\ m$

Step-by-step explanation:

The formula for the circumference of a circle with the diameter is:

$C = \pi d$

Since the diameter is 3m, solve for $C$ :

$C = \pi d\\C = \pi3\\C = (3.14) \times 3\\C = 9.42$

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How many solutions does the following equation have?

Marysya12 [62]

Answer:

b) no solution

Step-by-step explanation:

What you always want to do in this type of problem is to combine all of your "like terms," where like terms are the part of your equation that have the same variable (or no variable). In this equation, we see three terms that have the variable "z". We can add the 12z + 15z on the left side to get 27z, and then we subtract 27z on both sides to cancel both of the 27z terms out.

Now, we are left with -6 = -5 (because we got rid of all the terms with the variable z in them). We know that -6 does not equal -5, and therefore, there is no number that we can assign to variable z such that the left side of the equation will equal the right side of the equation.

Therefore, there is no solution (because a solution to the equation would be a value that we can plug into the variable z to make the equation true).

3 0

3 years ago

Read 2 more answers

Questions are in the screenshot.

White raven [17]

For question 4, $x = 18$ units,

For question 5, $x = 8.333$ units.

Step-by-step explanation:

Step 1:

Since the given polygons are similar to each other, all the ratios of one polygon to the other will remain equal for all the values of the two similar polygons.

We take the ratio of the same sides of both polygons i.e. the ratio of the lengths or the ratio of the widths.

Step 2:

For question 4, the first rectangle has a length of 9 units while the width is 3 units.

For the second rectangle, the length is x as x is greater than the width in the first rectangle. The width is 6 units.

The ratio of the first rectangle to the second is;

$\frac{3}{6} : \frac{9}{x} , x = (9)(\frac{6}{3} ) = 18.$ So $x = 18$ units.

Step 3:

The shapes in question 5 are made of a square and a triangle.

For the first shape, the side length is 6 units while the side of the triangle is 10 units.

For the second shape, the side length is 5 units while the side of the triangle is x units.

The ratio of the first shape to the second is;

$\frac{6}{5} : \frac{10}{x} , x = (10)(\frac{5}{6} ) = 8.333.$ So $x = 8.333$ units.

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3 years ago

Anna has been studying a type of bacteria that triples every month. Originally, there were 4 bacterial cells. She wants to know

bija089 [108]

As per the given information;

Bacteria triples every month.

Originally, there were 4 bacterial cells.

We are suppose to find how many there will be after 15 months.

Hence we can say , the number of bacteria after n month can be given using the exponential growth function

$a_n=4*3^n$

So number of bacteria after 15 month will be

$a_{15}=4*3^{15}$

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3 years ago

Write the expression as a single logarithm. <br> pls help me with this problem

DanielleElmas [232]

Answer:

in logarithm + works as a * for numbers with the same bases.

Step-by-step explanation:

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3 years ago

Read 2 more answers

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Rashid [163]

$x = \frac{ -2 \pm \: \sqrt{ {2}^{2} - 4 \times 1 \times 10 } }{2} \\ \\ x = \frac{ - 2 \pm 6i}{2} \\ \\ \boxed{ \red{ \huge{x = - 1 \pm \: 3i}}}$

$\boxed{ \red{ \huge{answer = d}}}$

3 0

3 years ago