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3 years ago

Help plz..And No links!! I repeat No links!!

Mathematics

2 answers:

Setler [38]3 years ago

7 0

Answer:

Step-by-step explanation:

Take 64 and subtract by 8, to get 56

koban [17]3 years ago

4 0

64-8=56
You do simply subtraction because the cobra is 8 inches longer.
The answer is 56

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F) The marked price of a radio is 25 % above the selling price and the cost pr

Ostrovityanka [42]

Answer:

See explanation below.

Step-by-step explanation:

Let's say, $x$ represents the sale price of radio.

Then the marked price of the radio is $1.25x$

The cost price of the radio is $(1.25x)(0.70)$

The discount is simply 25% because the radio is being sold at 25% less then the marked price.

The gain percent is given as:

$\frac{x-1.25x\times \:0.70}{x}\times 100\\\\=12.5\%$

The radio is being sold at 12.5% gain.

Best Regards!

8 0

3 years ago

Plz help asap......................................

ziro4ka [17]

Option B:

Law of cosine, two sides and the included angle are known.

Solution:

Let us first know the law of cosines and law of sines.

Law of cosine:

If we know the sides a, b and the included angle θ, then we can find the third side c. This is known as the law of cosine.

$c^2=a^2+b^2-2abcos\theta$

Law of sine:

The sides of a triangle are to one another in the same ratio as the sines of their opposite angles.

$$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

Given ∠P and the sides r, q are known.

To find the value of p:

Option A: Law of cosines, all sides are known.

It is false by the above definition of law of cosine.

Option B: Law of cosine, two sides and the included angle are known.

It is true by the above definition of law of cosine.

Option C: Law of sines, all sides are known.

It is false, because one angle is given in question.

Option D: Law of sines, two angles and the included side are known.

It is false, because two angles are not given.

Option B is the correct answer.

Hence the answer is "Law of cosine, two sides and the included angle are known".

7 0

3 years ago

What’s the side of 200cm in a square

Artemon [7]

To find the length of a side of a square fins the square root of the area.

Area = 200 cm^2

Side = √200

Side = 10√2 (Exact length)

or 14.142 cm's ( round the decimal answer as needed.)

3 0

3 years ago

A spherical balloon was inflated such that it had a diameter of 24 centimeters. Additional helium was then added to the balloon

DanielleElmas [232]

To solve this we are going to use the formula for the volume of a sphere: $V= \frac{4}{3} \pi r^3$
where
$r$ is the radius of the sphere

Remember that the radius of a sphere is half its diameter; since the first radius of our sphere is 24 cm, $r= \frac{24}{2} =12$ . Lets replace that in our formula:
$V= \frac{4}{3} \pi r^3$
$V= \frac{4}{3} \pi (12)^3$
$V=7238.23 cm^3$

Now, the second diameter of our sphere is 36, so its radius will be: $r= \frac{36}{2} =18$ . Lets replace that value in our formula one more time:
$V= \frac{4}{3} \pi r^3$
$V= \frac{4}{3} \pi (18)^3$
$V=24429.02$

To find the volume of the additional helium, we are going to subtract the volumes:
Volume of helium= $24429.02cm^3-7238.23cm^3=17190.79cm^3$

We can conclude that the volume of additional helium in the balloon is approximately 17,194 cm³.

8 0

3 years ago

Mary weighs n kg while her sister weighs 15 kg less. How many times is Mary heavier than her sister?

kari74 [83]

Answer:

Mary is $\frac{n}{n-15}$ times heavier than her sister

Step-by-step explanation:

Mary's Weight = n

Sister's Weight = n - 15

To find how many times mary is heavier, we need to multiply "that many time" [let it be x] with sister's weight to get Mary's weight.

e.g. If someone weighs 100 and another person 50, 50 * 2 = 100, thus, 100 kg person is 2 times heaving. We do same for this:

(n - 15) * x = n

x = n/(n - 15)

3 0

3 years ago

Read 2 more answers