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
Nutka1998 [239]
3 years ago
11

A number b minus 4.2 is less than −7.5.

Mathematics
1 answer:
bekas [8.4K]3 years ago
4 0
B-4.2< -7.5

Explanation-

They say b minus 4.2 so we set it up like b-4.2 then it says less than so we use <
You might be interested in
Write the following number by entering one digit in each box of the place value chart.​
ratelena [41]

Answer:

  see the attached

Step-by-step explanation:

Each digit goes in the place corresponding to its place value.

When no digit has a given place value, a placeholder is used. That is the purpose of zero, a great invention in the history of mathematics. It makes place-value number systems possible.

8 0
3 years ago
A goat is attached to a 12 foot long leash pulled tight and rotated through an angle of 230 degrees
DochEvi [55]

Answer:

what is the question?

Step-by-step explanation:


5 0
4 years ago
Consider a rectangle of length L inches and width W inches. Find a formula for the perimeter of the rectangle. Use upper case le
malfutka [58]

Answer:

a) P=2(L+W)

b)\frac{dp}{dt}=2\frac{dL}{dt}+2\frac{dW}{dt}

c)-2 inch/hour

Step-by-step explanation:

given:

length of the rectangle as L inches

width of the rectangle as W inches

a) The perimeter is defined as <u>the measure of the exterior boundaries</u>

therefore, for the rectangle the perimeter 'P' will be

P= length of AB+BC+CD+DA    (A,B,C and D are marked on the figure attached)

Now from figure

    P= L+W+L+W

           OR

=> P=2L+2W        .....................(1)

b)now dp/dt can be found as by differentiating the equation (1)

\frac{dP}{dt}=2(\frac{dL}{dt} )+2(\frac{dW}{dt} ) .............(2)

c)Now it is given for the part c of the question that

L=40 inches

W=104 inches

dL/dt=2 inches/hour

dW/dt= -3 inches/hour    (here the negative sign depicts the decrease in the dimension)

substituting the above values in the equation (2) we get

\frac{dP}{dt}=2(2)+2(-3)

\frac{dP}{dt}=4-6=-2 inches/hour

5 0
3 years ago
A rectangular poster has an area of 190 inches squared. The height of the poster is one inch less than twice its width. Find the
Annette [7]
Set the height to h, and the width to w.

We know that wh=190 and h=2w-1.

Substituting 2w-1 for h, we have:

w(2w-1)=190

So:
2w^2-w-190=0

Factoring this equation, we get (2w+19)(w-10)=0.  The solutions to this equation are -9.5 and 10, but clearly the width must be positive, Substituting 10 for the width, we get 10*2-1=19 for the height.
4 0
3 years ago
Slove the simoltanous equation by using substitution or elimination method 5x-3y=1 3x+2y=1<br>​
xxTIMURxx [149]

<u>By substitution method </u>

5x - 3y =1

3x + 2y = 1

_____o____o____

5x - 3y = 1 \\ 5x = 1  +  3y \\ x =  \frac{1 + 3y}{5}

______o____o_____

3x + 2y = 1 \\ 3( \frac{1 + 3y}{5} ) + 2y = 1 \\  \frac{3 + 9y}{5}  + 2y = 1 \\  \frac{3 +9y + 10y}{5}  = 1 \\  \frac{3 + 19y}{5}  = 1 \\ 3 + 19y = (1)(5) \\ 3 + 19y = 5 \\ 19y = 5 - 3 \\ 19y = 2 \\ y =  \frac{2}{19}

______o_____o____

x =  \frac{1 + 3y}{5}  =  \frac{1 + 3 \frac{2}{19} }{5} \\ x =  \frac{1 +  \frac{6}{19} }{5}  =  \frac{ \frac{19 + 6}{19} }{5}   =  \frac{ \frac{25}{19} }{5}  \\ x =  \frac{25}{19}  \div 5 \\ x =  \frac{25}{19}  \times  \frac{1}{5}  \\ x =  \frac{5}{19}

I hope I helped you^_^

7 0
3 years ago
Other questions:
  • "If the volume of two cylinders are equal, then their surfaces areas must be equal." Do you agree or disagree with this statemen
    11·2 answers
  • Question in screenshot answer must be in cm
    13·1 answer
  • A taxi charges a base fee plus $0.75/km.
    6·2 answers
  • PLEASE HELP!! asap!!
    8·2 answers
  • 2+3*34=? Help if you know it. I know you are probably stupid. Or lazy. Lol. Ok
    11·2 answers
  • Which equation can be used to find the measure of angle LJK?
    12·1 answer
  • 5/8 - 1/8 in simpelest form
    10·1 answer
  • Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s powe
    15·1 answer
  • Would someone be able to assist me with this problem?
    13·1 answer
  • A) NO CHANGE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!