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3 years ago

Please help ASAP! Due tonight!

Mathematics

1 answer:

Trava [24]3 years ago

3 0

Answer:

D. x = √17

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Trigonometry

Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

leg a = 4

leg b = 1

hypotenuse c = x

Step 2: Solve for x

Substitute: 4² + 1² = x²
Exponents: 16 + 1 = x²
Add: 17 = x²
Isolate x: √17 = x
Rewrite: x = √17

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6 decigrams = milligrams

malfutka [58]

1 decigram = 100 milligrams

6 decigrams = 600 milligrams

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3 years ago

A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales,

lorasvet [3.4K]

Answer:

b= -4.68

Step-by-step explanation:

Hello!

We have to study variables:

Y: Monthly coffe sales

X: Price per pound of coffe ($)

The estimate regression line is

^Yi= a + bxi ∀ (i=1,.....,10)

The slope of the estimated regression line is represented by b.

The formula I'll use to calculate it is:

b= [n∑xiyi -(∑xi)*(∑yi)]/ n∑xi²-(∑xi)²

To calculate b we need to do some auxiliary calculations:

∑xiyi= 4213.15

∑xi= 87.47

∑yi= 545

∑xi²= 883.3703

Then we replace the formula:

b= [10*4213.15-(87.47)*(545)]/ n883.3703-(87.47)²

b= -4.68

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5 0

3 years ago

Best bicycles marks down the selling price of its bicycles to its customers. the company applies a 20% markdown.write a variable

tangare [24]

A=P×(0.8)
A is the price after the markdown
P is the original price
0.8 is the multiplier because 1-(80/100)=0.8
80/100 is the same as 80%, which is the remaining value when 20% of the value of the item is deducted.

6 0

3 years ago

X = 2y-2 4x-9 = 11 Step by step please

Alex787 [66]

Answer x=5, y= 3.5

Find y by plugging the x value into the 2nd equation
4(2y-2) -9=11
8y - 8 - 9 =11 combine like terms
8y = 28 divide both sides by 8
y = 3.5

Now find x
Plug your y value into first equation
X = 2(3.5) -2
X= 7-2
X=5

You can check your work by putting your x or y values into the equations

For the first equation
5=2(3.5) -2
5=5

For the second equation
4(5) -9 = 11
20 - 9 = 11
11 =11

4 0

2 years ago

IN A CLASS OF 40 STUDENTS, 25 PASSED THE TEST CONDUCTED BY THE CLASS TEACHER.WHAT PERCENTAGE OF STUDENTS FAILED?

Liono4ka [1.6K]

Answer:

45%

Step-by-step explanation:

5 0

3 years ago