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4 years ago

A circle has a diameter of 14.5cm

Mathematics

1 answer:

Alenkasestr [34]4 years ago

7 0

The radius will be 7.25cm
The circumference will be about 45.55
The area will be about 165.13

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Find the measure of angle A

Salsk061 [2.6K]

the angle c is 90°, it is a right triangle. (you see from the picture).

the sum of the interior angles are 180° (in all triangles)

180 - 90 - 29 =

61° (angle A)

----------------------

90 + 61 + 29 = 180°

4 0

3 years ago

Read 2 more answers

Which eqation is equivalent to 3x + 4y = 15

liubo4ka [24]

Answer:

$y=\frac{15-3x}{4}$

Step-by-step explanation:

Here we are given an equation in x and y and we are required to solve it for y

we have

$3x+4y=15$

subtracting 3x from each sides we get

$3x-3x+4y=15-3x$

$4y=15-3x$

now we divide both sides by 4 we get

$\frac{4y{4}=\frac{15-3x}{4}$

$y=\frac{15-3x}{4}$

Hence A) is our right answer.

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4 years ago

A classmate displays the

Natali [406]

Answer:

1 bar= 6.25 %

4 bar= ?...............(Criss cross)

x = 6.25% x 4 bar/1 bar

x = 25%

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3 years ago

Cynthia Besch wants to buy a rug for a room that is 19 ft wide and 32 ft long. She wants to leave a uniform strip of floor aroun

Rainbow [258]

Answer:

The rug should be 15 ft wide and 28 ft long.

Step-by-step explanation:

I have attached a figure that represents the situation.

The the rug is $l$ by $h$ , the width of the strip of floor is $w$ .

We are told that Cynthia can only afford 420 square feet of carpeting; therefore, it must be that

$l*h=420$ <em>(this says the area of the rug must be 420 square feet)</em>

From the figure we see that

$l= 32-2w$

$h=19-2w$

Therefore,

$l*h=420\\\\(32-2w)(19-2w)=420$

We expand this equation and get:

$4w^2-102w+608=420\\\\4w^2-102w+188=0$

using the quadratic equation we get two solutions:

$w=2\\w=23.5$

since the second solution, namely $w=23.5$ , is larger than one of the dimensions of the room (is greater than 19 ft) it cannot be the width of the strip; therefore, we take $w=2$ to be our solution.

Now we find the dimensions of the rug:

$l=32-2(2)=28\\\\h=19-2(2)=15$

The rug is 15 ft wide and 28 ft long.

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4 years ago

Select the statement that correctly compares two numbers.

OLEGan [10]

Answer:

d. jh8chihjihvy cggbbgfcccvcc

7 0

3 years ago