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
4vir4ik [10]
2 years ago
5

Fish decrese 25% each year. If there are 60 fish in the lake last year, how many will there be this year?

Mathematics
1 answer:
PolarNik [594]2 years ago
7 0

Answer:

45

Step-by-step explanation:

You might be interested in
Macy is tutoring students in mathematics during her summer break. She charges $20 for a 30 minute session and $35 for an hour. T
Zanzabum
If she only had 1 hour sessions she had 8 sessions in the first week because if you do 35 times 8 you get 280. 
7 0
3 years ago
What would the value of x be
nlexa [21]

Answer:

65°

Step-by-step explanation:

The sum of the interior angles of a quadrilateral is 360 degrees.

65+115+115=295

360-295=65

Answer: 65°

8 0
3 years ago
Read 2 more answers
Can someone please answer. There is a picture. There is only one question. Thank you so much
fomenos
<span>(x-h)^2 + (y-k)^2 = r^2
(h, k) = (-5, -1)
r = 5
</span><span>(x+5)^2 + (y+1)^2 = 5^2
</span><span>(x+5)^2 + (y+1)^2 = 25</span>
4 0
3 years ago
Help anyone can help me do the question,I will mark brainlest.​
Marrrta [24]

Part (a)

The radius is r = 42 because OA = 42.

The circumference, aka distance around the circle, is

C = 2*pi*r

C = 2*(22/7)*42

C = 264

We're told that arc AB is 110 mm which is 110/264 = 5/12 of the full distance around the circle.

So we'll apply 5/12 to the full rotation 360 to get (5/12)*360 = 150

<h3>Answer:  150 degrees</h3>

==============================================================

Part (b)

Compute the area of the full circle

A = pi*r^2

A = (22/7)*(42)^2

A = 5544

Then take 5/12 of this because we only want 5/12 of the full circle area (to get the area of the shaded pizza slice)

(5/12)*(5544) = 2310

<h3>Answer:  2310 square mm</h3>

==============================================================

Side note: Both answers are approximate because pi = 22/7 is approximate.

5 0
2 years ago
Formulate the following problem as least squares problems. For each problem, give a matrixA and a vector b such that the problem
hammer [34]

Answer:

a) A=\left[\begin{array}{ccc}1&2&3\\1&-1&1\end{array}\right]

b=\left[\begin{array}{ccc}0\\1\end{array}\right]

b) ||Ax-b||^{2} =(-bx_{2}+4)^{2}  (-4x_{1} +3x_{2} -1)^{2} +(x_{1} +8x_{2} -3)^{2}

c) A=\left[\begin{array}{ccc}0&6\sqrt{2} &0\\\sqrt{3} &3\sqrt{3} &0\\2&-16&0\end{array}\right]

x=\left[\begin{array}{ccc}x_{1} \\x_{2} \\x_{3} \end{array}\right]

b=\left[\begin{array}{ccc}-\sqrt{2} \\\sqrt{3} \\6\end{array}\right]

Step-by-step explanation:

a) considering the equation:

Minimize x_{1}^{2}  +2x_{2}x^{2}  +3x_{3}^{2}+(x_{1}   -x_{2} +x_{3} -1)^{2} +(-x_{1} -4x_{2} +2)^{2}

A=\left[\begin{array}{ccc}1&2&3\\1&-1&1\end{array}\right] (matrix A)

vector b

b=\left[\begin{array}{ccc}0\\1\end{array}\right]

b) If Pxn is matrix B and p-vector d, we have:

minimize (-6x_{2}+4)^{2}  +(-4x_{1} +3x_{2} -1)+(x_{1} +8x_{2} -3)^{2}

Ax=\left[\begin{array}{ccc}0&-6&0\\-4&3&0\\1&8&0\end{array}\right]

\left[\begin{array}{ccc}x_{1} \\x_{2} \\x_{3} \end{array}\right]

b=\left[\begin{array}{ccc}-4\\1\\3\end{array}\right]

Ax-b=\left[\begin{array}{ccc}-bx_{2}+4 \\-4x_{1}+3x_{2}-1  \\x_{1}+8x_{2}-3  \end{array}\right] =1

||Ax-b||^{2} =(-bx_{2}+4)^{2}  (-4x_{1} +3x_{2} -1)^{2} +(x_{1} +8x_{2} -3)^{2}

c) minimize 2(-bx_{2}+4)^{2}  +3(-4x_{1} +3x_{2} -1)^{2} +4(x_{1} -x_{2} -3)^{2} -(6\sqrt{2}x_{2}  +4\sqrt{2} )^{2} +(-4\sqrt{3} x_{1} +3\sqrt{3}x_{2}  -\sqrt{3})^{2}  +(2x_{1} -16x_{2} -6)^{2}

in matrix:

A=\left[\begin{array}{ccc}0&6\sqrt{2} &0\\\sqrt{3} &3\sqrt{3} &0\\2&-16&0\end{array}\right]

x=\left[\begin{array}{ccc}x_{1} \\x_{2} \\x_{3} \end{array}\right]

b=\left[\begin{array}{ccc}-\sqrt{2} \\\sqrt{3} \\6\end{array}\right]

6 0
3 years ago
Other questions:
  • Ms Wallwill Roll a single number cube. What is the What is the probability she will roll an even number ?
    9·1 answer
  • If tan theta = 10/13 and cos theta &gt; 0 then sin2theta is what ?
    14·1 answer
  • Please help! What is the value
    14·1 answer
  • A college student has taken a summer job to help pay swishing in one week he earned the following amounts Monday $45.90 Tuesday
    8·2 answers
  • How many five-digit palindromes are there? (A palindrome is a number that reads the same forwards and backwards, such as 70107.)
    11·1 answer
  • Diagram the statement three fourths of 40 little engines could climb the hill
    9·1 answer
  • Giving brainliest and thanks for best answer
    12·2 answers
  • PLEASE IM GONNA DIE Paloma rides a scooter. She travels 10 ft. For every 1 second.
    5·1 answer
  • Marcus mixing blue paint and yellow paint the ratio of 2 to 3 to make a red paint he wants to make 45 L of repaint he began to m
    6·2 answers
  • A Big Mac at McDonald’s costs $3.99. A 10pc. chicken nugget costs $4.49. How much would it cost if you bought (2) Big Mac’s and
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!