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3 years ago

Pls help I don’t get any of them

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

Answer:

Step-by-step explanation:

28. Area of the circle = π $r^{2}$ where r is the radius of the circle.

Given diameter = 14m, therefore radius = $\frac{14}{2}$ = 7m

Now area of the circle = 49 $\pi ^{2}$ or = 49 * 3.14 * 3.14 = 483.12 $m^{2}$

29. Volume of cylinder = π $r^{2}$ h = π* $1.5^{2}$ * 3 = 6.75π cu. feet or 21.195 cu. feet

30. A ball resembles a sphere. Volume of the sphere = $\frac{4}{3} \pi r^{3}$

Given diameter = 30inches; Therefore, radius = 15 inches

Now, Volume of the ball = $\frac{4}{3} \pi 15^{3}$ = 4500π cu. inches or 14310 cu.inches

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How to multiply and divide algebraic fractions

Alex787 [66]

Answer:

Step-by-step explanation:

Multiplying two algebraic fractions produces a new algebraic fraction. Multiply the two numerators to get the new numerator and multiply the two denominators to get the new denominator. Then simplify by reducing the new fraction to lowest terms.

for example:

$\frac{x}{y} \\$ × $\frac{a}{b}$ = $\frac{xa}{yb}$

Division of algebraic fractions

The procedure for dividing algebraic fractions is the same as the procedure for dividing common fractions. Replace the division by a fraction by the multiplication by the reciprocal of that fraction, like this. Then carry out the multiplication of the two fractions as described above.

for example:

$\frac{\frac{a}{b} }{\frac{x}{y} }$

can be written as

$\frac{a}{b}$ × $\frac{x}{y}$ = $\frac{ax}{by}$

hope this answer helped you. pls mark as brainliest.

5 0

3 years ago

Can someone please help me with this geometry question I will mark brainliest

BARSIC [14]

BC = 5√2

AC = 10

$ac = \sqrt{ {ab}^{2} + {bc}^{2} } = \sqrt{2 \times {(5 \sqrt{2} )}^{2} } = \sqrt{100} = 10$

5 0

3 years ago

Read 2 more answers

Jason hired a luxury car service. The service charges a fixed rate of $10.95, regardless of the number of miles traveled, plus a

monitta

Answer:

The minimum number of miles he should travel is 15 miles

Step-by-step explanation:

Let

x ---> the number of miles traveled

we know that

The number of miles traveled multiplied by $3.71 per mile plus a fixed rate of $10.95 must be less than or equal to the number of miles multiplied by $4.44 per mile

The inequality that represent this situation is

$10.95+3.71x\leq 4.44x$