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
RUDIKE [14]
3 years ago
9

In indirect variation where y =

Mathematics
1 answer:
vlada-n [284]3 years ago
8 0

Step-by-step explanation:

y=k/x

y=20, x=2

Substitute this first to get "k"

20=k/2

k=40

Value of y when x=10... is now

y= 40/10

y=4.

You might be interested in
What do the terms scale and interval mean in reference to a line graph
katen-ka-za [31]

he scale of a bar graph is the range of values presented along either the horizontal or vertical axis. The interval is the smallest quantity between two tick marks along an axis.

<span> </span>
4 0
3 years ago
(2x² - 5) - (3x² + 4).
Goshia [24]

(2x² - 5) - (3x² + 4).

Pretend that there is a -1 in front of :(3x² + 4).

(2x^2-5)-1(3x^2+4)

2x^2-5-3x^-4

2x^2-3x^2-5-4

=-x^2-9

Answer: -x^2-9

3 0
4 years ago
Unit rate feet per second 180 miles over 2 hours
Tatiana [17]
So that is equal to 180 miles per 2 hours which is 90 miles per hour if each hour has the same m/hr rate.
You can set up a proportion:
let x = number of miles per hour
\frac{x}{180} = \frac{1}{2}
cross multiply and you get
2x=180
divide both sides by 2 and you get
x=90
so you get the same answer both ways,
90 miles per hour
5 0
4 years ago
A glass paperweight has a composite shape: a square pyramid fitting exacty on top of an 8 centimeter cube. The pyramid has a hei
ArbitrLikvidat [17]

Answer:

Part 1) The volume of the paperweight is 576\ cm^{3}

Part 2) The total surface area of the paperweight is 400\ cm^{2}

Step-by-step explanation:

Part 1) what is the volume of the paperweight?

we know that

The volume of the paperweight is equal to the volume of the square pyramid plus the volume of the cube

step 1

Find the volume of the pyramid

The volume of the pyramid is equal to

V=\frac{1}{3}BH

where

B is the area of the square base

H is the height of the pyramid

B=8^{2}=64\ cm^{2}

H=3\ cm

substitute

V=\frac{1}{3}(64)(3)=64\ cm^{3}

step 2

Find the volume of the cube

The volume of the cube is equal to

V=b^{3}

V=8^{3}=512\ cm^{3}

step 3

Find the volume of the paperweight

64\ cm^{3}+512\ cm^{3}=576\ cm^{3}

Part 2) what is the total surface area of the paperweight?​

we know that

The total surface area of the paperweight is equal to the surface area of 5 faces of the cube plus the lateral area of the pyramid

step 1

Find the surface area of 5 faces of the cube

SA=5b^{2}

SA=5(8^{2})=320\ cm^{2}

step 2

Find the lateral area of the pyramid

LA=4[\frac{1}{2}bh]

LA=4[\frac{1}{2}(8)(5)]=80\ cm^{2}

step 3

Find the total surface area of the paperweight

320\ cm^{2}+80\ cm^{2}=400\ cm^{2}

8 0
3 years ago
Given triangle abc is an isosceles right triangle where angle b is the right angle and line bd is an angle bisector. Which postu
Leya [2.2K]

Answer:

angle bisector theorem

Step-by-step explanation:

the angle bisector theorem tells us that if an angle is cut by a bisector than it willl be equally cut and congruent

3 0
3 years ago
Other questions:
  • Help me with number 2 please!!!
    11·1 answer
  • Which equation is a function of x? 20 POINTS!!! QUICK PLEASE!
    5·2 answers
  • Find the value of this expression if x = 9
    10·2 answers
  • Solve the equation. X2=-180
    5·1 answer
  • Dixon shadow is 9 feet long Adriana shadow is 6 feet long if Dixon is 6 feet tall how tall is Adriana
    11·1 answer
  • Kimmy pays $120 to rent a room for her family get-together. To feed the family, she has to pay $9.25 per person. How much will K
    9·1 answer
  • 2.5% of what number is 14?
    8·1 answer
  • Simplify the expression:<br> 7r–3r+9r
    9·1 answer
  • Find the GCF of 40 and 63 using lists of factors
    8·1 answer
  • Work out the angle x<br> 2x<br> 3.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!