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Juli2301 [7.4K]
2 years ago
6

Jamal is 167 cm tall. Which expression finds Jamal’s height in dekameters? Use the metric table to help answer the question.

Mathematics
2 answers:
lana66690 [7]2 years ago
4 0

Answer:

D

Step-by-step explanation:

Because

1 dekameter = 1000 cm

167 / 1000

Y_Kistochka [10]2 years ago
4 0

Answer:

d

Step-by-step explanation:

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How would you create a system of linear equations to solve using substitution for this problem?
tino4ka555 [31]

we have

x ----> number of hats the sold

y ----> number of scarves they sold

so

12x+15y=690 ------> equation A

y=x+10 -----> equation B

Solve the system of equations

Using substitution Method

substitute equation B in equation A

12x+15(x+10)=690

solve for x

12x+15x+150=690

27x=690-150

27x=540

x=20

Find out the value of y

y=x+10

y=20+10

y=30

therefore

The answer is

<h2>20 hats and 30 scarves</h2>
5 0
1 year ago
Find the sum −12(7z+4)+15(5z−15) can someone help me please?
alexgriva [62]

−12(7z+4)+15(5z−15)=-84z-48+75z-225=-9z-273

3 0
3 years ago
Read 2 more answers
Lucia paints a certain room in 5 hours, and Marie paints the same room in 8 hours. How long does it take them to paint the room
cluponka [151]

Answer:

3.1 hrs  painting together

Step-by-step explanation:

Lucia rate = 1 room/ 5 hr

Marie rate = 1 room/8hr

now combine the rates

1 room / ( 1/5 + 1/8) = 3.077 hrs

6 0
2 years ago
When do you know to use either the shell method or washer method and how do you know what to take it to respect to when it is ro
Marat540 [252]

Step-by-step explanation:

Let's first consider a rotation about a vertical axis (x=0 or x=a).

Using washer method, the volume is:

∫ᵧ₁ᵞ² π (x₂² − x₁²) dy

∫ᵧ₁ᵞ² π ((x₂ − a)² − (x₁ − a)²) dy

Using shell method, the volume is:

∫ₓ₁ˣ² 2π x (y₂ − y₁) dx

∫ₓ₁ˣ² 2π (x − a) (y₂ − y₁) dx

First, notice that with washer method, the differential dy is parallel to the axis of rotation.  With shell method, the differential dx is perpendicular to the axis of rotation.

Also, notice that the limits of integration must match the differential.

Choosing the best method will depend on the function.

If x² can be written in terms of y, and integrated, then washer method is the one to use.

If y can be written in terms of x, and integrated, then shell method is the one to use.

In other words, use washer method if x = f(y) is simple to integrate.  Use shell method if y = f(x) is simple to integrate.

If instead we rotate about a horizontal axis (y=0 or y=a), the volume with washer method is:

∫ₓ₁ˣ² π (y₂² − y₁²) dx

∫ₓ₁ˣ² π ((y₂ − a)² − (y₁ − a)²) dx

Using shell method, the volume is:

∫ᵧ₁ᵞ² 2π y (x₂ − x₁) dy

∫ᵧ₁ᵞ² 2π (y − a) (x₂ − x₁) dy

We choose washer method when y² = f(x) is easy to integrate.

We choose shell method when x = f(y) is easy to integrate.

So here's the takeaway:

If the axis of rotation is x = 0 or x = a, and x² = f(y) is easy to integrate, use washer method.

If the axis of rotation is y = 0 or y = a, and y² = f(x) is easy to integrate, use washer method.

Otherwise, use shell method.

7 0
3 years ago
On which intervals is the function increasing? Choose<br> all that apply.
Alja [10]

The function is increasing on the intervals:

(-∞, 3] and [5, ∞)

Then the correct options are a and c.

<h3>On which intervals is the function increasing?</h3>

The function is increasing when, reading from left to right, we can see that the curve goes upwards.

By looking at the graph, we can see that the function increases between -∞ and 3, and also increases between 5 and ∞, then the correct options are a and c-

(-∞, 3] and [5, ∞)

If you want to learn more about increasing functions:

brainly.com/question/1503051

#SPJ1

8 0
2 years ago
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