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
Lelu [443]
3 years ago
9

The rectangular pupil of an octopus is estimated to be 15 millimeters long with an area of (30x - 195)

Mathematics
1 answer:
Vadim26 [7]3 years ago
3 0

Answer:

4x - 11

Step-by-step explanation:

→ Divide the area by the length to find the width

( 30x - 195 ) ÷ 15 = 2x - 13

→ Now find the perimeter by doubling each expression and adding them

2 ( 2x - 13 ) + 15

→ Simplify

4x - 26 + 15 which is 4x - 11

You might be interested in
A volleyball reaches its maximum height of 13 feet, 3 seconds after its served. Which of the following quadratics could model th
kykrilka [37]
If it reaches its maximum height a t=3 its velocity must be zero at t=3

dy/dx=0 at t=3

dA/dx=4x+12=24 at t=3 so this does not apply

dB/dx=-4x+12=0 at t=3 and B=13 at t=3 so B applies

dC/dx=-4x-12=-24 at t=3 so this does not apply

dD/dx=-4x-12=-24 at t=3 so this does not apply

dE/dx=-4x-12=-24 at t=3 so this does not apply

So only quadratic B: reaches a maximum height of 13 feet at 3 seconds.
3 0
3 years ago
Read 2 more answers
Combine as indicated by the signs. 4/ y^2-9 + 5/y+3
natka813 [3]
\frac{4}{y^{2}-9 } + \frac{5}{y+3} = \frac{4}{(y-3)(y+3) } + \frac{5}{y+3}= \frac{4}{(y-3)(y+3) } + \frac{5(y-3)}{(y-3)(y+3)}=
\\ \\=\frac{4}{(y-3)(y+3) } + \frac{5y-15}{(y-3)(y+3)}= \frac{5y-11}{(y-3)(y+3)}=\frac{5y-11}{y^{2}-9}

8 0
4 years ago
I need help with this geometry question asap!
Gnom [1K]

Answer:

  (a)  Theorem 9

Step-by-step explanation:

Any of the given theorems can be used to prove lines are parallel. We need to find the one that is applicable to the given geometry.

<h3>Analysis</h3>

The marked angles are between the parallel lines (interior) and on opposite sides of the transversal (alternate).

Theorem 9 applies to congruent alternate interior angles.

8 0
2 years ago
4x + 5y = 10
Vika [28.1K]

Answer:

For A = 32/5 and B = 8 the system of equations will have infinitely many solutions.

Step-by-step explanation:

Given equations are:

4x + 5y = 10

Ax + By = 16

The general form of linear equation in two variables is given by:

ax+by = c

Here a, b and c are constants and x,y are variables.

In the given equations, after comparing with the general form

a_1 = 4\\b_1 = 5 \\c_1 = 10\\a_2 = A\\b_2 =B\\c_2 = 16

"In order for a system of equations to have infinity many solutions,

\frac{a_1}{a_2} = \frac{b_1}{b_2} = \frac{c_1}{c_2} "

Putting the values we get

\frac{4}{A} = \frac{5}{B} = \frac{10}{16}\\\frac{4}{A} = \frac{5}{B} = \frac{5}{8}\\Now\\\frac{4}{A} = \frac{5}{8}\\\frac{A}{4} = \frac{8}{5}\\A = \frac{8}{5} * 4\\A = \frac{32}{5}\\And\\\frac{5}{B} = \frac{5}{8}\\\frac{B}{5} = \frac{8}{5}\\B = 8

Hence,

For A = 32/5 and B = 8 the system of equations will have infinitely many solutions.

5 0
3 years ago
What's the answer to a/4=1 1/2 ? please show work thanks
Arisa [49]
A/4=11/2 if you take 4/2 it equals 2 so you times the numerator and the denomerator by 2 and 11*2 equals 22 so the answer is a=22
4 0
4 years ago
Other questions:
  • Which equation represents a proportional relationship that has a constant of proportionality equal to StartFraction 4 over 5 End
    10·2 answers
  • There were d passengers in the train. 15% of all of them went in the first car, 20% went in the second car. How many passengers
    9·1 answer
  • HELP..
    11·1 answer
  • PLEASE HELP WITH DIRECTIONS ON THIS PROBLEM, MAJOR MATH GRADE The sides of a pyramid measure 114 feet. My question is does each
    9·1 answer
  • Please help last question
    5·2 answers
  • Please Help Me!!!! qwq
    11·1 answer
  • Please help! Will mark brainliest
    11·2 answers
  • A painter must add the areas of two walls to determine
    13·1 answer
  • What is the mean for the data shown in the line plot? please help fast!
    10·1 answer
  • A school dedicated 50% of the courtyard area for students to start a garden the students went to know how much of the 632- squar
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!