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4 years ago

Johann wants to find a rectangular solar panel with an area of 128 cm. If the

Mathematics

1 answer:

Papessa [141]4 years ago

8 0

Answer:

The length of rectangular panel is 6.4 cm.

Step-by-step explanation:

We are given the following information in the question:

Area of rectangular solar panel = 128 square cm

Width of panel = 20 cm

We have to find the length of the panel

Formula:

$\text{Area of rectangular panel} = \text{Width}\times \text{Length}\\\Rightarrow 128 = 20\times \text{Length}\\\\\text{Length} = \displaystyle\frac{128}{20} = 6.4\text{ cm}$

Hence, the length of rectangular panel is 6.4 cm.

This is an example of direct variation as greater would be length and breadth, the greater would be the area.

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To find the surface area of the pyramid, in square inches, Vikram wrote (33.2) (34.2) + 4 (one-half (34.2) (28.4)). What error d

madam [21]

Answer:

B. He used the wrong expression to represent the area of the base of the pyramid.

Step-by-step explanation:

Given

See attachment for pyramid

$Area = (33.2)(34.2) + 4 * \frac{1}{2} * 34.4 * 28.4$

Required

Vikram's error

The surface area of a square pyramid is:

$Area = Base\ Area + 4 * Area \triangle$

Where

$Base\ Area = Length * Length$

$Base\ Area = 34.2 * 34.2$

$4 * Area \triangle = 4 * \frac{1}{2} * Base * Height$

$4 * Area \triangle = 4 * \frac{1}{2} * 34.2 * 28.4$

So:

$Area = Base\ Area + 4 * Area \triangle$

$Area = 34.2 * 34.2 + 4 * \frac{1}{2} * 34.2 * 28.4$

By comparing the calculated expression with

$Area = (33.2)(34.2) + 4 * \frac{1}{2} * 34.4 * 28.4$

Option (b) is correct

3 0

3 years ago

Garrett ran 3 1/4 miles on Monday. on Wednesday he ran 2 2/3 miles father than on Monday. on Friday he ran the same distance as

vlabodo [156]

3 1/4 + 2 2/3

3 1/4= 13/4
2 2/3= 8/3

13/4+8/3= 5 11/12

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3 years ago

Can someone plz help me!

Gekata [30.6K]

Answer:

Step-by-step explanation:

the sequence is decreasing by 8

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3 years ago

Read 2 more answers

HELP PLEASE-

NemiM [27]

Answer: Choice C

(4, 18)

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

Explanation:

One point shown on the graph is (2,9)

If we double each x and y coordinate, then

2*2 = 4
9*2 = 18

We go from (2,9) to (4,18)

Plotting this point on the graph will be on the same line as the other points.

Or you could note that y/x = 9/2 = 18/4 = 4.5

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3 years ago

Can you figure this out ?

vovikov84 [41]

Across :
3. conclude
10. quantitative data
11. experiment
12. observe

down :
1. qualitative data
2. tentative
4. hypothesis
5. results
6. inference
7. analyze
8. data
9. variable

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3 years ago