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4 years ago

Help pls i need this luv you guys ,<333

Mathematics

1 answer:

bagirrra123 [75]4 years ago

7 0

Answer:

x ≈ 3.1 ft

Step-by-step explanation:

The segment from the centre to the chord is a perpendicular bisector, thus

The triangle is right with base = $\frac{1}{2}$ x

Applying Pythagoras' identity to the right triangle, then

( $\frac{1}{2}$ x )² + 1.4² = 2.1²

$\frac{1}{4}$ x² + 1.96 = 4.41 ( subtract 1.96 from both sides )

$\frac{1}{4}$ x² = 2.45 ( multiply both sides by 4 )

x² = 9.8 ( take the square root of both sides )

x = $\sqrt{9.8}$ ≈ 3.1 ft ( to the nearest tenth )

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EXPENSES: Camille has no more than $50.00 to spend each week for lunch and bus fare. Lunch costs $3.00 each day, and bus fare is

Afina-wow [57]

Answer:

Inequality: $3.00 L + 1.75B \leq 50$

She can afford to buy the lunch and bus rides

Step-by-step explanation:

Given

$Maximum\ Amount = \$50.00$

$Lunch = \$3.00$ daily

$Bus\ Fare = \$1.75$ daily

Solving (a) The inequality

Let bus ride be represented with B and Lunch be represented with L

If 1 bus ride costs $1.75, then

B bus ride would cost $1.75 * B

If 1 lunch costs $3.00, then

L lunch would cost $3.00 * L

Total Spending is then the sum of the above expression i.e.

$3.00 * L + $1.75 * B

The question says Camille can not spend more than $50.00.

This is represented by less than or equal to.

So, the expression is:

$3.00 * L + 1.75 * B \leq 50$

$3.00 L + 1.75B \leq 50$

Solving (b): Can she afford 7 lunch and 14 bus ride?

To do this, we simply substitute 7 for L and 14 for B

$3.00 * 7 + 1.75 * 14 \leq 50$

$21 + 24.5 \leq 50$

$45.5 \leq 50$

The above inequality is true.

<em>Hence, she can afford to buy the lunch and bus rides</em>

8 0

3 years ago

Whoopy what a day! 6+6

mash [69]

Answer:

Yes, indeed. 12 :)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A cheetah runs with an average speed of 32 m/s for 30 seconds. How far did the cheetah run?

denis-greek [22]

Answer:

o.2m.

s=av/t where av= average speed and s= speed and t= time

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3 years ago

Which improper fraction is equal to the mixed number 3 3/8

ikadub [295]

The improper fraction equal to the mixed number 3 3/8 is C. 27/8

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3 years ago

A survey among freshman at a certain university revealed that the number of hours spent studying before final exams was normally

patriot [66]

Answer: 0.0775

Step-by-step explanation:

Given : Mean : $\mu = 25$

Standard deviation : $\sigma =15$

Sample size : $n=36$

Since its normal distribution , then the formula to calculate the z-score is given by :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x= 28.2 hours

$z=\dfrac{28.2-25}{\dfrac{15}{\sqrt{36}}}=1.28$

For x= 30 hours

$z=\dfrac{30-25}{\dfrac{15}{\sqrt{36}}}=2$

The P- value = $P(1.28$

$=P(z$

Hence, the probabiliy that the average time spent stydying for the sampe was between 28.2 and 30 hours = 0.0775

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3 years ago