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3 years ago

3+ (8) + 4 How to solve

Mathematics

2 answers:

djyliett [7]3 years ago

8 0

Answer:

Step-by-step explanation:

To solve this problem, first you have to use the order of operations and stands for parenthesis, exponent, multiply, divide, add, and subtract. So remember to solve these problems from left to right.

First, you do is add.

3+(8)=11

(11)+4=15

<h2> So, the correct answer is 15.</h2><h2>I hope this helps! </h2><h2>Thank you for posting your question! </h2><h2> </h2>

saw5 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

Solve using the left-> right rule. Note that they all have addition signs and that they are all positive numbers:

3 + (8) + 4 = 3 + 8 + 4 = (3 + 8) + 4 = (11) + 4 = 15

15 is your answer.

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Find the volume of this figure.

Mrac [35]

The answer is a because we don’t care

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2 years ago

A circle has a diameter of 12 units, and its center lies on the x-axis. What could be the equation of the circle?

ycow [4]

Answer:

$x^{2} +y^{2} =36$

Step-by-step explanation:

A circle centered at (0,0) with radius r is $x^{2} +y^{2} =r^{2}$

Since your circle has diameter of 12, then its radius is 6. Then $r^{2} =36$

So a possible answer is: $x^{2} +y^{2} =36$

If you want to move the location of the center, but keep it on the x-axis, then add or subtract a number to the x, such as this:

$(x+4)^{2} +y^{2} =36$

The center of this circle would be (-4, 0) which is still on the x-axis.

8 0

3 years ago

(2x³)⁴= ? What is the right answer, with full explanation please:

netineya [11]

So you multiply the 4th power

2 times 4 is 8
4 times 3 is 12
Then you plug it In 8x^12

So your answer is D

Hope this helps *smiles*

7 0

3 years ago

Read 2 more answers

-4x + y = -9<br> -<br> 5x + 2y = 3<br> :<br> Solve the Linear equation

Yuri [45]

-4x+y= -9 can be turned into
y= -9 + 4x

5x+2y=3 (plug y in)
5x+2(-9+4x)=3
5x-18+8x=3
5x+8x=3+18
13x=21
divide 13 on both sides
x=1.6

6 0

2 years ago

A pond has 150 fish and the population decreases by 8% each day. How many days before there are 30 fish

nlexa [21]

Answer:

19 days

Step-by-step explanation:

Given

$a = 150$ --- initial

$r = 8\%$ -- rate

Required

Days when the fish gets to 30

The function is exponential and as such it follows;

$y = ab^x$

Where x represents the number of days and y the number of fishes

Because the fishes decreases;

$b = 1 - r$

So, we have:

$b = 1 - 8\%$

Express as decimal

$b = 1 - 0.08$

$b = 0.92$

In $y = ab^x$

$a =150$

$y = 30$

$b = 0.92$

So, we have:

$30 = 150 * 0.92^x$

Divide both sides by 150

$0.2 = 0.92^x$

Take log of both sides

$log(0.2) = log(0.92^x)$

Apply law of logarithm

$log(0.2) = x\ log(0.92)$

Make x the subject

$x = \frac{log(0.2)}{log(0.92)}$

$x = \frac{-0.6990}{-0.0362}$

$x = 19.309$

$x \approx 19$

<em>Hence, it takes approximately 19 days</em>

3 0

3 years ago