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
miss Akunina [59]
3 years ago
8

Answer all for Brainliest (easy math) 5 questions for 30 points

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0

1) The caterpillar was already at 4.5 feet so 4.5 will be added. If it crawls upwards 38 of an inch every minute and the amount of minutes is not specified, this will be represented as 38x. That means the answer is C. f(x) = 38x + 4.5

2) Substitute the known values into the equation. There are 7 people at $8.25 a person, which is a total of $57.75 <u>I used 7 because he invites 6 friends, plus himself. </u>He only has $50 on his gift card, so he won't have enough to cover the cost. The answer is A.

3) They start out with 40lbs and recieve 120 more. They have 160lbs in total. If they sell 8lbs a day for 5 days, thats 8*5 or 40lbs total. 160 - 40 = 120lbs left after 5 days. I'd say the answers are A, B, and D.

4) I think the answer would be C because 1,500 is used to find the number of grams of isotope present after t years. The number of grams can't be 1,500. I hope that makes sense because I'm not sure how to explain it.

5) The growth factor is 2 (2x, x being the number of hours). Multiply by 15 because the lab has 15 of them. The answer is B. f(x) = 15 * 2x

I hope this helps you! I'm sorry if I got any of them wrong!

You might be interested in
Solve using they law of exponents <br> x^2 x x^-5
pentagon [3]

Answer:

−103

Step-by-step explanation:

6 0
2 years ago
Graph the following transformation
castortr0y [4]
Dkckdkckkdkckdkckdkckdkfkrkkfneedstobeatleast30characterslongvkfkckdkckkdck

6 0
3 years ago
An n × n matrix B has characteristic polynomial p(λ) = −λ(λ − 3) 3 (λ − 2) 2 (λ + 1). Which of the following statements is false
asambeis [7]

Answer:

Only d) is false.

Step-by-step explanation:

Let p=p(\lambda)=\lambda(\lambda-3)^3 (\lambda-2)^2 (\lambda+1) be the characteristic polynomial of B.

a) We use the rank-nullity theorem. First, note that 0 is an eigenvalue of algebraic multiplicity 1. The null space of B is equal to the eigenspace generated by 0. The dimension of this space is the geometric multiplicity of 0, which can't exceed the algebraic multiplicity. Then Nul(B)≤1. It can't happen that Nul(B)=0, because eigenspaces have positive dimension, therfore Nul(B)=1 and by the rank-nullity theorem, rank(B)=7-nul(B)=6 (B has size 7, see part e)

b) Remember that p(\lambda)=\det(B-\lambda I). 0 is a root of p, so we have that p(0)=\det(B-0 I)=\det B=0.

c) The matrix T must be a nxn matrix so that the product BTB is well defined. Therefore det(T) is defined and by part c) we have that det(BTB)=det(B)det(T)det(B)=0.

d) det(B)=0 by part c) so B is not invertible.

e) The degree of the characteristic polynomial p is equal to the size of the matrix B. Summing the multiplicities of each root, p has degree 7, therefore the size of B is n=7.      

8 0
3 years ago
If m&lt;4= 86° what are the measures of the other seven angles in the figure
Vsevolod [243]

Answer:

below

Step-by-step explanation:

IF l₁ and l₂ are parallel, then:

Angles 2, 4, 5, 8 all equal 86 degrees

Then angles 1, 6, 3 , 8 all equal 180 - 86 which is 94 degrees

5 0
3 years ago
Read 2 more answers
The diagonals of quadrilateral ABCD intersect at point E, AE=5x-10,EC=2x+5, and BE= y/3.. If ABCD is a square, find the value of
enot [183]
Check the picture below.

5 0
3 years ago
Read 2 more answers
Other questions:
  • y=f(x) is odd (f(-x)=-f(x)) and f(x&gt;0) = x^2-5x-12, x is not = to 0. What points does the line f(x)=12 go through.
    11·1 answer
  • If, in 7 years, Susan will be 2 times as old as she was 3 years ago, what is Susan’s present age?
    11·1 answer
  • How do write 412.638 using expanded form using decimals
    5·1 answer
  • 3,969 + b^2 = 11,025
    10·2 answers
  • HELPPPP MEEEEEE
    9·1 answer
  • Which is an example of the associative property?
    7·2 answers
  • What is the value of d+3
    6·1 answer
  • 1Which angle measures less than 90° but greater than 0?
    6·2 answers
  • The ceiling of Victoria’s living room is a square that is 16√2 ft long on each side. To decorate for a party, she plans to h
    7·1 answer
  • What is the equation of a line that is perpendicular to the line y = -3x + 2 and passes through the point (6,8)?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!