3 years ago

Find the length of the third side of each triangle

Mathematics

1 answer:

LuckyWell [14K]3 years ago

5 0

Answer:Where is the picture?

Step-by-step explanation:

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What's the area of a circle with the diameter of 7m? (use 3.14 as pi)

ololo11 [35]

Area = Pi * r^2
'
r = 7 / 2 = 3.5

area = 3.14 * 3.5^2
area = 3.14 * 12.25
area = 38.465 m sq

6 0

3 years ago

How to Factor the Trinomial x^2 - x + 1 using the box method? <img src="https://tex.z-dn.net/?f=x%5E2%20-%20x%20%2B%201"

IRINA_888 [86]

Answer:

x = 1+√3 i/2 and x = 1-√3 i/2

Step-by-step explanation:

Given the expression x^2 - x+ 1, we are to factorize the expression as shown;

x^2 - x+ 1,

using the general formula

x = -(-1)±√1²-4(1)/2(1)

x = 1±√1-4/2

x= 1±√-3/2

x = 1±√3 i/2

Hence the required value of x are x = 1+√3 i/2 and x = 1-√3 i/2

7 0

2 years ago

Which expression is equivalent to 7(a+2) when a= 6? O 7(6) O 9(6) O 7(6)+2 O 7(6)+14

storchak [24]

7(6+2) = 7(8)=56

The answer is:

7(6)=42 + 14=56

4 0

3 years ago

Help me with this problem like the whole thing

Ulleksa [173]

Has to multiply I think try that !

3 0

3 years ago

(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate

Anon25 [30]

Answer:

The margin of error (E) $=0.49$

Step-by-step explanation:

Given,

mean $\bar{x}=6.88$

standard deviation $\sigma=1.90$

sample size $n=41$

$90\% \quad \text{confidence interval}$

Critical value $=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]$

$=1-0.90$

$\Rightarrow \alpha=0.1$

Critical value $=\frac{z_{0.1}}{2}$

$=z_{0.05}$

$=1.645$

The margin of error (E) $=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }$

$=1.645\times\frac{1.90}{\sqrt{41} }$

$=0.49$

Hence, The margin of error (E) $=0.49$

Complete question is attached in below.

7 0

3 years ago