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
valina [46]
3 years ago
6

What is the area of this figure 28 yd² 40 yd² 52 yd² 64 yd²

Mathematics
2 answers:
JulijaS [17]3 years ago
6 0
<span>Area = b*h and in some cases * 2 so you need to do this, 64*52 + 40*28= 4448 yd2</span>
svlad2 [7]3 years ago
5 0
The answer is 28 yd²
You might be interested in
Help please and thanks will mark as brainliest
algol13
11)
3x = 180
x = 60

12)

6x + 18 = 180
6x = 162
x = 27
3 0
3 years ago
A line is drawn so that it passes through the points (-3, -1) and (4, 2).
marishachu [46]

Answer:

(A) \boxed{\bold{y=\frac{3}{7}x+\frac{2}{7}}}

(B) \boxed{\bold{2 \ = \ \frac{3}{7} * \ 4 \ + \ \frac{2}{7}  }}

Explanation:

(A) Slope: y = mx + b

m = 3/7

b = 2/7

Slope = \bold{\frac{y_2-y_1}{x_2-x_1}}

\bold{\left(x_1,\:y_1\right)=\left(-3,\:-1\right),\:\left(x_2,\:y_2\right)=\left(4,\:2\right)}

M = \bold{\frac{2-\left(-1\right)}{4-\left(-3\right)}: \ \frac{3}{7} }

Y intercept

\bold{y=\frac{3}{7}x+b}

Plug in \bold{\left(-3,\:-1\right)\mathrm{:\:}\quad \:x=-3,\:y=-1}

\bold{-1=\frac{3}{7}\left(-3\right)+b}

Isolate B

\bold{-1=\frac{3}{7}\left(-3\right)+b}

b = \bold{\frac{2}{7} }

(B) 4 = x, 2 = y

2 = 3/7 * 4 + 2/7

5 0
3 years ago
Read 2 more answers
A 1000-liter (L) tank contains 500 L of water with a salt concentration of 10 g/L. Water with a salt concentration of 50 g/L flo
djverab [1.8K]

Answer:

a) y(t)=50000-49990e^{\frac{-2t}{25}}

b) 31690.7 g/L

Step-by-step explanation:

By definition, we have that the change rate of salt in the tank is \frac{dy}{dt}=R_{i}-R_{o}, where R_{i} is the rate of salt entering and R_{o} is the rate of salt going outside.

Then we have, R_{i}=80\frac{L}{min}*50\frac{g}{L}=4000\frac{g}{min}, and

R_{o}=40\frac{L}{min}*\frac{y}{500} \frac{g}{L}=\frac{2y}{25}\frac{g}{min}

So we obtain.  \frac{dy}{dt}=4000-\frac{2y}{25}, then

\frac{dy}{dt}+\frac{2y}{25}=4000, and using the integrating factor e^{\int {\frac{2}{25}} \, dt=e^{\frac{2t}{25}, therefore  (\frac{dy }{dt}+\frac{2y}{25}}=4000)e^{\frac{2t}{25}, we get   \frac{d}{dt}(y*e^{\frac{2t}{25}})= 4000 e^{\frac{2t}{25}, after integrating both sides y*e^{\frac{2t}{25}}= 50000 e^{\frac{2t}{25}}+C, therefore y(t)= 50000 +Ce^{\frac{-2t}{25}}, to find C we know that the tank initially contains a salt concentration of 10 g/L, that means the initial conditions y(0)=10, so 10= 50000+Ce^{\frac{-0*2}{25}}

10=50000+C\\C=10-50000=-49990

Finally we can write an expression for the amount of salt in the tank at any time t, it is y(t)=50000-49990e^{\frac{-2t}{25}}

b) The tank will overflow due Rin>Rout, at a rate of 80 L/min-40L/min=40L/min, due we have 500 L to overflow \frac{500L}{40L/min} =\frac{25}{2} min=t, so we can evualuate the expression of a) y(25/2)=50000-49990e^{\frac{-2}{25}\frac{25}{2}}=50000-49990e^{-1}=31690.7, is the salt concentration when the tank overflows

4 0
3 years ago
SLFJ SDFNEFS LF A SF IE FJS VS IKF DSFNIS DSF
avanturin [10]

Answer:

40

Step-by-step explanation:

I think but what do you mean???!!!!

6 0
3 years ago
HELP ASAP TIMED!!!!!!!!!!!!!!!
jenyasd209 [6]

Step-by-step explanation:

1 ans 35/37

2 ans 0.95

3 ans 12/37

4 ans 0.32

3 0
2 years ago
Other questions:
  • What is the greatest common divisor of 54, 36, and 24?
    5·1 answer
  • Please please please please please please please please please please please please please answer
    9·2 answers
  • What is the algebraic expression for the following word phrase the quotient of 3 and z
    9·2 answers
  • Convert 15/50 to a percent.<br><br>A)0.3%<br>B)3.0%<br>C)30%
    15·1 answer
  • Flying with the wind, a plate went 251 km/h. Flying into the same wind, the plane only went 219 km/h. What is the speed of the w
    5·1 answer
  • A population consisting of an unlimited number of unit is termed as
    13·2 answers
  • Please help <br> asap <br> Will mark brainliest
    15·1 answer
  • What is the percent decrease when the balance in a bank account goes from $300 to $60?
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=12.5%3Dn-1.5" id="TexFormula1" title="12.5=n-1.5" alt="12.5=n-1.5" align="absmiddle" class="la
    8·2 answers
  • The value of y varies directly with x. When y = 75, x = 1/2 What is the value of y when x = 18?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!