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3 years ago

What is the radius and diameter of the following circle?

Mathematics

1 answer:

alexandr1967 [171]3 years ago

7 0

Diameter= 18cm

Radius is half of diameter

Radius=9cm

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An airplane is flying at 350 km/h in a direction of 349 degrees. Find the westerly and northerly components of its velocity.

Oksi-84 [34.3K]

Answer: 350km/h,349

Step-by-step explanation:Find the exact value using tringometric identities

5 0

2 years ago

What is the product of (2x-1)(x+4)

Novay_Z [31]

Answer:

$\large\boxed{(2x-1)(x+4)=2x^2+7x-4}$

Step-by-step explanation:

$(2x-1)(x+4)\qquad\text{use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(2x)(x)+(2x)(4)+(-1)(x)+(-1)(4)\\\\=2x^2+8x-x-4\qquad\text{combine like terms}\\\\=2x^2+(8x-x)-4\\\\=2x^2+7x-4$

4 0

2 years ago

Can someone tell me how to do it, i have more problems like this

BigorU [14]

Answer:

$\large\boxed{\dfrac{7n}{30}=\dfrac{7}{30}n}$

Step-by-step explanation:

$\dfrac{2n}{5}+\left(-\dfrac{n}{6}\right)=\dfrac{2n}{5}-\dfrac{n}{6}$

To subtract both fractions we need a common denominator.

$LCD=(5)(6)=30$

$\dfrac{2n}{5}=\dfrac{2n\cdot6}{5\cdot6}=\dfrac{12n}{30}\\\\\dfrac{n}{6}=\dfrac{n\cdot5}{6\cdot5}=\dfrac{5n}{30}$

Therfore

$\dfrac{2n}{5}-\dfrac{n}{6}=\dfrac{12n}{30}-\dfrac{5n}{30}=\dfrac{12n-5n}{30}=\dfrac{7n}{30}=\dfrac{7}{30}n$

4 0

3 years ago

Can you help me on this.

jeka57 [31]

Answer:

x=3

Step-by-step explanation:

6 10

---------- = ------------

6+x 15

using cross products

6 * 15 = 10 * (6+x)

90 = 60+10x

subtract 60 from each side

90-60 = 60+10x-60

30 = 10x

divide by 10

30/10 = 10x/10

3=x

4 0

2 years ago

A local grocery store charges for oranges

Anon25 [30]

I think it would be 3 dollars because the 1 matches with the three.

7 0

2 years ago