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posledela
3 years ago
10

Determine the product of (4.2 × 10–1) ⋅ (5.7 × 10–1). Write your answer in scientific notation. Question 7 options: A) 239.4 × 1

0–1 B) 2.394 × 10–1 C) 23.94 × 10–1 D) 239.4 × 10–2
Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

Its B

Step-by-step explanation:

B is the proper answer in scientific notation and scientific notation is only one decimal placed

The most common form of scientific notation inserts a decimal point after the first significant digit

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A square has a perimeter of 12 yd. What is the length of each side?
Lena [83]

Answer:

  • Length of side of square is 3 yd.

~

Step-by-step explanation:

Let the side of square be 's'. We know that Perimeter of square is <u>4 ×</u> <u>Side</u>.<em> </em>By substituting values in the formula we can find the required side.

~

:\implies \sf  4 × s=Perimeter \:  of \:  square

~

:\implies \sf  \:  \:  \: 4 × s = 12

~

:\implies \sf \:  \:  \:  s =  \dfrac{12}{4}

~

:\implies \bf \:  \:  \:  Side = 3 yd.

~

\therefore \: Length of side of square is <u>3</u><u> </u><u>yd</u>.

7 0
1 year ago
Select the two statements that are true about the equation −10=60(−40)
Aleksandr-060686 [28]

Answer:

The slope of the line is 60  

One point on the line is (40, 10)  

Step-by-step explanation:

The missing choices are :

1) The slope of the line is 10  

2)One point on the line is (40, 10)  

3)The slope of the line is 60  

4)One point on the line is (10, 60)

Given the equation y−10=60(x−40),  applying distributive property we get:

y−10=60x - 60*40

t = 60x - 2400 + 10

t = 60x - 2390

The slope is the number that multiplies x, that is, 60.

To check if the point (40, 10) belongs to the equation, replace the values x = 40 and y = 10 in the equation, as follows:

(10)−10=60((40)−40)

0 = 0

The same number appear at both sides of the equal sign,  then the point (40, 10) is on the line. Analogously, for point (10, 60):

(60)−10=60((10)−40)

50 = 60*(-30)

50 = -1800

The two numbers are different, then, the point (10, 60) is not on the line.

4 0
3 years ago
Read 2 more answers
You have 6 bracelets and 15 necklaces. Find the number of ways you can wear one bracelet and one necklace
KonstantinChe [14]
The answer would be 90
5 0
3 years ago
Correct answers only please!
MrRissso [65]

Answer:

23.6°

Step-by-step explanation:

In this question we have to use some trigonometry to work out angle XVW. Since we are working out angles all of the trigonometric functions will have to be to the ⁻¹. The first thing we need to identify is will formula will we use out of the following:

Sin⁻¹ = Opposite ÷ Hypotenuse

Tan⁻¹ = Opposite ÷ Adjacent

Cos⁻¹ = Adjacent ÷ Hypotenuse

-------------------------------------------------------------------------------------------------------

10 = Hypotenuse

4 = Opposite

-------------------------------------------------------------------------------------------------------

We know which formula to use because the length won't be in the triangle for example we will be using the Sin triangle because we don't have an adjacent. If we don't have an adjacent then the other formula's won't work.

Now we substitute in the values to find the value of angle XVW

Sin⁻¹ = Opposite ÷ Hypotenuse

Sin⁻¹ = 4 ÷ 10

The value of angle XVW is 23.57817848

6 0
2 years ago
Find an ordered pair (x,y) that is a solution to the equation 5x+y=7
IRINA_888 [86]

Answer:

54565656

Step-by-step explanation:

ggfght

4 0
3 years ago
Read 2 more answers
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