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3 years ago

7

I need this quick guys plz

2 answers:

likoan [24]3 years ago

3 0

Answer:

circumference = 2πr = 2 × 3.14 × 15 = 94.2cm

Option C

postnew [5]3 years ago

3 0

Answer:

The answer is C

because circumference = 2 $\pi$ r

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A student conlcuded that the soulion the eqution how do you agree explian why are why not 2x+1+3=0 Is x=4

MaRussiya [10]

Solving the equation:
2x+1+3=0
2x+4=0
2x+4-4=0-4
2x=-4
2x/2=-4/2
x=-2

Therefore, the student that concluded x=4 is incorrect.

3 0

4 years ago

A rectangle has an area of 24 sq. inches and a perimeter of 50 in. what are the dimensions of the rectangle

gulaghasi [49]

Answer:

Length of rectangle = 24 inches

Width of rectangle = 1 inches

Step-by-step explanation:

Area of rectangle = 24 square inches

Perimeter of rectangle = 50 inches

Formulas:

Area of rectangle = $l\times w$

Perimeter of rectangle = $2(l+w)$

where $l$ represents length of rectangle and $w$ represents width of rectangle.

So, we can get two equations for $l$ and $w$

A) $l\times w=24$ [Area]

B) $2(l+w)=50$ [ Perimeter ]

Simplifying equation B.

Dividing both sides by 2.

$\frac{2(l+w)}{2}=\frac{50}{2}$

$l+w=25$

Solving for $l$ in terms of width.

Subtracting $w$ both sides.

$l+w-w=25-w$

∴ $l=25-w$

Substituting value of $l$ in terms of $w$ in equation A.

$(25-w)w=24$

Using distribution.

$25w-w^2=24$

Adding $w^2$ both sides.

$25w-w^2+w^2=24+w^2$

$25w=24+w^2$

subtracting $25 w$ both sides

$25w-25w=24+w^2-25w$

$0=w^2-25w+24$

We have a quadratic equation. $w^2-25w+24=0$

We solve for $w$ by factor method.

Splitting middle term into two terms such that the sum of the two = $-25w$ and product of two = $24w^2$

$w^2-24w-w+24=0$

Factoring in pairs.

$w(w-24)-1(w-24)=0$

Factoring as a whole

$(w-24)(w-1)=0$

So, we have

$w-24=0$ and $w-1=0$

By adding 24 to one equation and adding 1 to other we get

$w-24+24=0+24$ and $w-1+1=0+1$

$w=24$ and $w=1$

So length can be found out by plugging value of $w$ in the length equation.

$l=25-24=1$ and $l=25-1=24$

Since length is always the longer side of rectangle so, the dimensions of rectangle can be given by.

length = 24 inches (answer)

width = 1 inches (answer)

6 0

3 years ago

In ΔVWX, v = 64 cm, w = 18 cm and x=63 cm. Find the measure of ∠W to the nearest degree.

wariber [46]

Answer:

∠W = 16.3°

Step-by-step explanation:

In ΔVWX, v = 64 cm, w = 18 cm and x=63 cm. Find the measure of ∠W to the nearest degree.

From that above question, we are given 3 sides and we are to find the angle of one of the sides.

We solve using Cosine rule.

∠W = arc cos (v² + x²﹣w²/2vx)

∠W = arc cos (64² + 63² - 18² /2 × 64 × 63)

∠W = arc cos (0.9599454365)

∠W = 16.27137°

∠W = 16.3°

8 0

3 years ago

Read 2 more answers

Create an equation and solve. The cost of a concert ticket for a student is $2 less than one half of the cost for an adult. The

Sonja [21]

Answer: a=14

Step-by-step explanation:

Equation: 5=1/2a-2

7 0

3 years ago

Select the correct location on the table.

Bas_tet [7]

Answer:

left one on 3rd row

Step-by-step explanation:

using the rules of exponents/ radicals

$a^{-m}$ = $\frac{1}{a^{m} }$

$a^{\frac{m}{n} }$ = $\sqrt[n]{a^{m} }$

given

$12^{-\frac{4}{7} }$

= $\frac{1}{12^{\frac{4}{7} } }$

= $\frac{1}{\sqrt[7]{12^{4} } }$

6 0

2 years ago