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3 years ago

SOMEONE HELP ME PLSSSSSSSSSSSSSSSSSSS

Mathematics

1 answer:

fomenos3 years ago

3 0

Answer: drag the first one to the fourth one, drag the second one to the first one,drag the third one to the second one,drag the fourth one to the third one.

Step-by-step explanation:if its wrong then im sorry

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In the morning, the temperature was – 10°C. By the afternoon, it had risen to – 2°C. What was the change in temperature from the

Sever21 [200]

Answer:

8 °C

Step-by-step explanation:

Step 1: Given data

Initial temperature value (T1): -10 °C

Final temperature value (T2): -2 °C

Step 2: Calculate the change in temperature from the morning to the afternoon

To calculate the change in the temperature, we have to perform the subtraction T2 - T1.

ΔT = T2 - T1 = (-2 °C) - (-10 °C) = -2 °C + 10 °C = 8 °C

The temperature change is positive, meaning that the temperature increased.

8 0

3 years ago

Find the area of the part of the paraboloid z = 9 - x^2 - y^2 that lies above the xy-plane.

svetoff [14.1K]

Parameterize this surface (call it $S$ ) by

$\vec r(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec\jmath+(9-u^2)\,\vec k$

with $0\le u\le3$ and $0\le v\le2\pi$ . Take the normal vector to $S$ to be

$\vec r_u\times\vec r_v=2u^2\cos v\,\vec\imath+2u^2\sin v\,\vec\jmath+u\,\vec k$

Then the area of $S$ is

$\displaystyle\iint_S\mathrm dA=\iint_S\|\vec r_u\times\vec r_v\|\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^{2\pi}\int_0^3u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv$

$=\displaystyle2\pi\int_0^3u\sqrt{1+4u^2}\,\mathrm du=\boxed{\frac{37\sqrt{37}-1}6\pi}$

3 0

4 years ago

Explain how the Quotient of Powers property was used to simplify this expression.

pav-90 [236]

We have been given the expression 2^5/8=2^2

8 can be rewritten as 2^3

Hence, the given expression becomes

2^5/2^3=2^2

After subtracting the exponents on left hand side of the equation we get:

2^2=2^2

we can do it by simplifying 8 to 2^3 to make both powers base two, and subtracting the exponents.

6 0

3 years ago

Solve.

horrorfan [7]

.hello :
2d−e=7....(1)
d+e=5.....(2)
(1)+(2) : 3d=12
d=4
subsct in (2) :
4+e=5
e=1
conclusion :
The solution is (4, 1).

4 0

3 years ago

Read 2 more answers

QUESTIONS The average price of wheat per metric ton in 2012 was $30575. Demand in millions of metric tons) in 2012 was 672. The

soldi70 [24.7K]

Answer: -0.9 ; inelastic

Explanation:

Given:

The average price of wheat per metric ton in 2012 = $305.75

Demand (in millions of metric tons) in 2012 = 672

The average price of wheat per metric ton in 2013 = $291.56

Demand (in millions of metric tons) in 2013 = 700

We will compute the elasticity using the following formula:

ε = $\frac{\frac{(Q_{2} - Q_{1})}{\frac{(Q_{2} +Q_{1})}{2}}}{\frac{(P_{2} - P_{1})}{\frac{(P_{2} +P_{1})}{2}}}$

ε = $\frac{\Delta Q}{\Delta P}$

Now , we'll first compute $\Delta Q$

i.e. $\frac{\Delta Q}{\Delta P}$ = $\frac{(700 - 672)}{\frac{(700 +672)}{2}}$

$\Delta Q$ = 0.04081

Similarly for $\Delta P$

i.e. $\Delta P$ = $\frac{(291.56 - 305.75)}{\frac{(261.56 +305.75)}{2}}$

$\Delta P$ = -0.0475

ε = $\frac{0.04081}{-0.0475}$

ε = -0.859 $\simeq$ -0.9

$\because$ we know that ;

If, ε > 1 ⇒ Elastic

ε < 1 ⇒ Inelastic

ε = 1 ⇒ unit elastic

$\because$ Here , ε = -0.859 $\simeq$ -0.9

Therefore ε is inelastic.

6 0

4 years ago