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2 years ago

12

Claire thinks that if she draws a parallelogram with 2 congruent sides, it must be a rhombus. Jacob thinks that she would need t

o draw a parallelogram with at least 3 congruent sides before she could be sure it was a rhombus. Who is correct, if anyone, and why?

1 answer:

MaRussiya [10]2 years ago

5 0

Yes it is ok if she draws a parallelogram

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Find the missing length indicated.<br> х<br> 12<br> 9<br> X =<br> units

madam [21]

Answer:

16

Step-by-step explanation:

9/12=12/x

x=16

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2 years ago

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s

aivan3 [116]

Answer: The answer is 314.28 cm² (approx.).

Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.

We need to find the area 'A' of the circular cross-section of the pipe.

Given, diameter of the circular section is

$\textup{d}=20~\textup{cm}.$

So, the radius of the circular cross-section will be

$\textup{r}=\dfrac{\textup{d}}{2}=\dfrac{20}{2}=10~\textup{cm}.$

Therefore, cross-sectional area of the pipe is

$\textup{A}=\pi \textup{r}^2=\dfrac{22}{7}(10)^2=\dfrac{2200}{7}=314\dfrac{2}{7}=314.28~.~.~.~\textup{cm}^2.$

Thus, the answer is 314.28 cm² (approx.).

4 0

2 years ago

2(x + 3) = x - 4 <br>And <br>4(5x-2)=2(9x+3)<br>

weqwewe [10]

2x+6 - х -4

2x - x = - 4 - 6

x=-10

20x - 8 = 18x +6

20x - 18x = 6 +8

2x = 14

x=7

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2 years ago

An object placed between two plane mirrors arranged at right angles to each other at a distance d1 from the surface of one mirro

xz_007 [3.2K]

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2 years ago

Let C represent the cost in dollars and R represent the revenue in dollars. What is the break-even point? Use a table to help if

krek1111 [17]

Answer:

(5,225)

Step-by-step explanation:

The break even point is when the cost equals the revenue.

C=R

15x+150=45x

150=30x

x=5

Plug this back into the original equations to get the y value.

15*5+150=225

or 45*5=225

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2 years ago