1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anuta_ua [19.1K]
4 years ago
7

PLS help and explain these problems

Mathematics
1 answer:
vichka [17]4 years ago
6 0
For 19 I got z=15. And for 20 I got k=8.6
You might be interested in
The angle which is less than 90 degrees is called?
BlackZzzverrR [31]

Answer:

An acute angle is an angle less than 90°

5 0
3 years ago
Read 2 more answers
Use the graph to find the limit (if it exists). If the limit does not exist, explain why.
Mandarinka [93]

Answer:

  the limit does not exist

Step-by-step explanation:

As x approaches π/2 from below, tan(x) approaches +∞. A x approaches π/2 from above, tan(x) approaches -∞. These two limits are not the same, so the limit is said not to exist.

___

For a limit to exist, it must be the same regardless of the direction of approach.

6 0
3 years ago
Which of the following is a rational number? I give 20 pts!
LenKa [72]

Answer:

It's b. 100

Step-by-step explanation:

10 x 10= 100 = rational number, other include a series of numbers that cannot be written down.

Sorry if this is wrong hope I did the math right. :)

4 0
3 years ago
For her presentation on the Wonders of the World, Mary baked a square pyramid-shaped cake as pictured below. The slant height of
mihalych1998 [28]

Answer:

V=196in^3

Step-by-step explanation:

The volume of a pyramid is:

V=\frac{A_{b}h}{3}

where A_{b} is the area of the base and h is the height (the perpendicular measurement between base and highest point, not the slant height)

Since the base is a square, the area is given by:

A_{b}=l^2

where l is the length of the side: l=8in, thus:

A_{b}=(8in)^2\\A_{b}=64in^2

Now we need to find the height, for this we use the right triangle that forms with half of a square side (8in/2 = 4in), the slant height (10in), and the height.

In this right triangle, the slant height is the hypotenuse, the leg 1 is the unknown height, and leg 2 is half of the square side.

Using pythagoras:

hypotenuse^2=leg1^2+leg2^2

substituting our values, and indicating that leg 1 is height h:

(10in)^2=h^2+(4in)^2

100in^2=h^2+16in^2

and solving for the height:

h^2=100in^2-16in^2\\h^2=84in^2\\h=\sqrt{84in^2}\\ h=9.165in

and finally we calculate the volume using this height and the area of the base:

V=\frac{A_{b}h}{3}

V=\frac{(64in^2)(9.165in)}{3} \\V=195.5in^3

rounding to the nearest cubic inch: V=196in^3

4 0
3 years ago
Tara runs an amusement park ride and needs to count the people who get on the ride. At the beginning of her shift, 132 people ha
DanielleElmas [232]
Y= the number riders over time
x= hours into Tara's shift
y= 33x + 132
6 0
3 years ago
Read 2 more answers
Other questions:
  • There are 30 students in Jenna's class. Jenna brought in 13 cupcakes. Which equation can be used to find the number of cupcakes
    7·2 answers
  • I don’t know the answer
    7·1 answer
  • Solve x^3+3x^2-23x-20=0
    9·1 answer
  • Solve this derivative using the quotient rule
    13·1 answer
  • a. I have five coins in my pocket – four are fair, and the other is weighted to have a 70% chance of coming up heads. I pull one
    14·1 answer
  • PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!<br><br> Simplify.<br><br> −6i√-44
    15·1 answer
  • I need help with properties of rhombus, rectangles and squares ​
    5·1 answer
  • If 2x -3y = 3 then find 16x 64y =?​
    6·2 answers
  • The fully simplified form of 2ab÷(8a) is:
    6·1 answer
  • Question 10 of 10
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!