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3 years ago

Select the correct answer.

Mathematics

2 answers:

laiz [17]3 years ago

6 0

I Think The answer is c I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you

Alchen [17]3 years ago

5 0

Answer:

0.10

Step-by-step explanation:

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A circle has a circumference of 7, 850<br> What is the radius of the circle?

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3 years ago

2 5/7+4 3/5= help please

Ainat [17]

Answer:

$7\frac{11}{35}$

Step-by-step explanation:

$2\frac{5}{7}+4\frac{3}{5}$

add the whole numbers

$2+4=6$

combine the fractions

$\frac{5}{7}+\frac{3}{5}$

LCM is 35 because 7 * 5 =35

$\frac{5}{7}=\frac{5\cdot \:5}{7\cdot \:5}=\frac{25}{35}$

$\frac{3}{5}=\frac{3\cdot \:7}{5\cdot \:7}=\frac{21}{35}$

$\frac{25}{35}+\frac{21}{35}=\frac{25+21}{35}$

$=\frac{46}{35}$

change the improper fraction into mixed number

$6+1\frac{11}{35}$

$=7\frac{11}{35}$

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4 years ago

A quadratic pattern has a second term equal to 1,a third term equal to -6 and a fifth term to -14 . calculate the second differe

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Step-by-step explanation:

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3 years ago

The inequality that will determine the number of items that need to be sold to make a profit is . The solution to the inequality

Alja [10]

Answer:

1: A (7.5x – 100 > 79.86 + 5.8x)

2: D (x > 105.8)

3: D (106)

Step-by-step explanation:

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3 years ago

If a certain cannon is fired from a height of 8.8 meters above the ground, at a certain angle, the height of the cannonball ab

Dennis_Churaev [7]

Answer:

It would take approximately 6.50 second for the cannonball to strike the ground.

Step-by-step explanation:

Consider the provided function.

$h(t)=-4.9t^2+30.5t+8.8$

We need to find the time takes for the cannonball to strike the ground.

Substitute h(t) = 0 in above function.

$-4.9t^2+30.5t+8.8=0$

Multiply both sides by 10.

$-49t^2+305t+88=0$

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are: $x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Substitute a = -49, b = 305 and c=88

$t=\frac{-305+\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}=-\frac{-305+\sqrt{110273}}{98}\\t = \frac{-305-\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}= \frac{305+\sqrt{110273}}{98}$

Ignore the negative value of t as time can't be a negative number.

Thus,

$t=\frac{305+\sqrt{110273}}{98}\approx6.50$

Hence, it would take approximately 6.50 second for the cannonball to strike the ground.

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3 years ago