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3 years ago

Solve by completing the square . x^2+7x+3=0show work

Mathematics

2 answers:

Tasya [4]3 years ago

7 0

This is your perfect answer

Murrr4er [49]3 years ago

6 0

Exact form would be:

x = + (square root of 37) divided by 2, subtracted by 7/2

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if a piece of string which is 368cm long must be cut into 8 equal pieces how long will each piece be (answer in mm)

Maksim231197 [3]

1cm= 10mm
So you do 368 divided by 80 which is 4.6mm

3 0

3 years ago

Please help me ASAP

elena-14-01-66 [18.8K]

Answer:

∠ 1 = 123°

Step-by-step explanation:

One way

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ 1 is an external angle of the triangle, thus

∠ 1 = 90° + 33° = 123°

Second way

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 given angles from 180 for third angle in Δ

third angle = 180° - (90 + 33)° = 180° - 123° = 57°

The third angle and ∠ 1 form a straight angle and are supplementary, thus

∠ 1 = 180° - 57° = 123°

7 0

3 years ago

What percent is 52.52 million of 142 million

coldgirl [10]

Answer:

37%

Step-by-step explanation:

Given parameters:

Total number = 142 million

Comparing number = 52.52 million

Unknown:

What percent is the number =?

Solution

The percentage;

= $\frac{comparing number }{total number } x 100$

= $\frac{52520000}{142000000}$ x 100

= 37%

5 0

3 years ago

Grumpy Corp drug tests all of the recent college graduates it hires each year. The drug test currently used correctly determines

Vedmedyk [2.9K]

Answer:

Hence, the probability of a Negative test is $P(T^C)=0.5904$ .

Step-by-step explanation:

(a)

Let $D=$ Drug user and $T=$ Test positive

Probability of drug users $P(D)=36\%=0.36$

$P(\frac{T}{D})=96\%=0.96$

$P(\frac{T^c}{D^c})=90\%=0.90$

(b)

Find the Probability of a Negative test,

$P(T^C)=P(\frac{T^C}{D^C})\cdot P(D^C)+P(\frac{T^C}{D})\cdot P(D)$

$\Rightarrow P(T^C)=0.9\cdot(1-0.36)+(1-0.96)\cdot 0.36$

$\Rightarrow P(T^C)=0.9\cdot 0.64+0.04\cdot 0.36$

$\Rightarrow P(T^C)=0.576+0.0144$

$\Rightarrow P(T^C)=0.5904$

4 0

3 years ago

In the formula Distance = Rate x Time, is the relationship between rate and time an inverse relationship?

Sati [7]

Answer:

No I don't think I tried to help so good luck.

4 0

3 years ago

Read 2 more answers

Solve by completing the square . x^2+7x+3=0show work​

Solve by completing the square . x^2+7x+3=0show work