All categories

3 years ago

5 point

Mathematics

1 answer:

nadya68 [22]3 years ago

6 0

Answer:

C table one hope this helps ya

You might be interested in

Your parents allow you to have Internet access on your cell phone as long as you prepay the bill. If your bill is $17.50 per wee

Darina [25.2K]

Answer:

2.5 dollars a day

Step-by-step explanation:

17.5 /7 in calculator

5 0

3 years ago

Factor Completely 3x^2-31x+36 Please show steps:)

lilavasa [31]

9x-31x+36
-22+36=14 is the answer!

6 0

3 years ago

An observation deck extends 120 feet out above a valley. The deck sits 70 feet above the valley floor. If an object is dropped f

Rzqust [24]

Answer:

Step-by-step explanation:

The height formula given is:

h = -16t^2 + 70

That means the object will be initially (t=0) at the height 70 feet, from where it will be dropped.

If we want to know the time when the object will be at height 6 feet, we just need to use h=6 in the equation, and then calculate the value of t:

6 = -16t^2 + 70

16t^2 = 64

t^2 =4

t = 2 s

So, it will take 2 seconds for the object to be 6 feet above the valley floor.

8 0

3 years ago

DEF is a right angled triangle calculate the length of EF correct to 3 sigificant figures

Vesnalui [34]

Answer:

$\displaystyle EF \approx 15.9$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] cosθ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Define

Angle θ = 28°

Adjacent Leg = EF = x

Hypotenuse = DF = 18

Step 2: Solve for x

Substitute in variables [Cosine]: $\displaystyle cos28^\circ = \frac{x}{18}$
[Multiplication Property of Equality] Multiply 18 on both sides: $\displaystyle 18cos28^\circ = x$
Evaluate trig: $\displaystyle 18(0.882948) = x$
Multiply: $\displaystyle 15.8931 = x$
Rewrite: $\displaystyle EF = 15.8931$
Round: $\displaystyle EF \approx 15.9$

8 0

3 years ago

Find the area of the shaded region. Round to the nearest tenth.

umka21 [38]

Answer: 2,827.43

Step-by-step explanation:

6 0

3 years ago