When multiplying decimals, how do you find the number of

1 answer:

7 0

Count the numbers right to the decimal point and then count that much of numbers from right to left and apply it

Ex - 2.50
*. 2.50

——————
6.2500. There are 4 numbers right to the decimal point

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What is the value of the expression?

Sliva [168]

Answer:

Try entering 2x+3=15 @ x=6 into the text box. After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15. The calculator prints "True" to let you know that the answer is right. More Examples Here are more examples of how to check your answers with Algebra Calculator. Feel free to try them now.

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What is the measure of an angle whose sine is√3/2 ? 60 45 30

dem82 [27]

ANSWER

The required angle is
$60 \degree$

EXPLANATION

Let the angle whose sine is
$\frac{ \sqrt{3} }{2}$
be
$x \degree$

Then

$\sin(x \degree) = \frac{ \sqrt{3} }{2}$

We take the inverse sign of both sides to obtain,

$x = \sin ^{ - 1} ( \frac{ \sqrt{3} }{2} )$

We use our scientific calculator to evaluate and obtain,

$x = 60 \degree$

8 0

2 years ago

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Solve 7x + 1 < 4(x - 2).

andrey2020 [161]

x<−3
hope this helps! (:

4 0

3 years ago

Brainliest explain this to me

shutvik [7]

So... Emily gets payed 12 dollars for every hour she works. with and ADDitional 30 dollars by the end of her day. Therefore you would multiply her hourly income (12) by the amount of hours she works (h). Then, add her 30 dollars to it. (Im feeling nice so the answer should look like this ~ 12h + 30.) Hope it helps you <3!

7 0

3 years ago

The measures of two complementary angles have a ratio of 3 : 2. What is the measure of the larger angle?

Mkey [24]

Question:

The measures of two complementary angles have a ratio of 3 : 2. What is the measure of the larger angle?

—————

Solution:

Call those two angles x and y, where x is the larger one.

If they are complementary, then their sum equals 90°:

x + y = 90° (i)

Also, the ratio between x and y is 3 : 2, so

x 3
—— = ——
y 2

Product of the extremes = product of the means:

2x = 3y

2x – 3y = 0 (ii)

Now, just solve this system of equations:

x + y = 90° (i)
2x – 3y = 0 (ii)

Solve it with elimination. Since you want to know the value of the larger angle, which is x, then eliminate the variable y by doing the following:

Multiply the equation (i) by 3,

3x + 3y = 270° (iii)
2x – 3y = 0 (ii)

then add both equations, so you cancel out the variable y:

3x + 2x + 3y – 3y = 270° + 0

3x + 2x = 270°

5x = 270°

 270°
x = ———
 5

x = 54° <——— this is the measure of the larger angle.

I hope this helps. =)

Tags: system of linear equations elimination method solve complementary angles algebra geometry

3 0

2 years ago