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Korvikt [17]
4 years ago
12

Can someone plzzz answer these questions with showing work?

Mathematics
1 answer:
snow_lady [41]4 years ago
7 0
So what you got to do is divide them perseay use a calculator for the first one 2/15 what would that be in a decimal 0.13333333333333 what ever on has 0.13333333  or something else repeating that is the one that you will circle 11/20=0.55   17/40 =0.425 1/2=0.5 so you answer would be 2/15
hope this helped
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Mercury orbits around the sun is 87 24/25 earth days. Venus orbits the sun in 224 7/10 earth days, and Mars orbits the sun in 68
pav-90 [236]

For this case we have the following mixed numbers:

87 \frac {24} {25}\\224 \frac {7} {10}\\686 \frac {49} {50}

We convert each mixed number into decimal:

Mercury orbits:87 \frac {24} {25} = \frac {25 * 87 + 24} {25} = \frac {2175 + 24} {25} = \frac {2199} {25} = 87.96

Venus orbits: 224 \frac {7} {10} = \frac {10 * 224 + 7} {10} = \frac {2240 + 7} {10} = \frac {2247} {10} = 224.7

Mars orbits: 686 \frac {49} {50} = \frac {50 * 686 + 49} {50} = \frac {34300 + 49} {50} = \frac {34349} {50} = 686.98

Answer:

Mercury orbits: 87.96

Venus orbits: 224.7

Mars orbits: 686.98

5 0
3 years ago
Find the radius of a circle if a 48-meter chord is 7 meters from the center. *
Airida [17]

Answer:

The radius of the circle is 25m

Step-by-step explanation:

Here, we are to calculate the radius of the circle.

The distance from the circle center, the half the length of the chord and the radius forms a right triangle with the radius being the hypotenuse.

We can then use Pythagoras’s theorem to approximate the value of the radius

Mathematically, the Pythagorean theorem establishes that the square of the hypotenuse = the sum of the squares of the other two sides

r^2 = 7^2 + 24^2

r^2 = 49 + 576

r^2 = 625

r = √(625)

r = 25m

5 0
3 years ago
Consider the triangle. Right triangle A B C. Side A C is 24 centimeters, C B is 10 centimeters, and hypotenuse A B is c. Find th
natita [175]

Answer: The length of the hypotenuse is 26 cm

Step-by-step explanation: Please refer to the attached diagram

The triangle ABC is drawn as described such that the right angle is at point C and line AB is the hypotenuse which is yet unknown.

Since we have a right angled triangle with two sides known and one unknown, we can apply the Pythagoras theorem which states that

AC² = AB² + BC² where AC is the hypotenuse and AB and BC are the other two sides

In this question the hypotenuse is AB, so we now have;

AB² = AC² + CB²

AB² 24² + 10²

AB² = 576 + 100

AB² = 676

Add the square root sign to both sides of the equation

√AB² = √676

AB = 26

Therefore the length of the hypotenuse is 26 cm

3 0
3 years ago
Read 2 more answers
If neither a nor b are equal to zero, which answer most accurately describes the product of (a + bi)(a - bi)?
Scrat [10]

Answer:  the correct option is

(D) The imaginary part is zero.

Step-by-step explanation:  Given that neither a nor b are  equal to zero.

We are to select the correct statement that accurately describes the following product :

P=(a+bi)(a-bi)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We will be using the following formula :

(x+y)(x-y)=x^2-y^2.

From product (i), we get

P\\\\=(a+bi)(a-bi)\\\\=a^2-(bi)^2\\\\=a^2-b^2i^2\\\\=a^2-b^2\times (-1)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[\textup{since }i^2=-1]\\\\=a^2+b^2.

So, there is no imaginary part in the given product.

Thus, the correct option is

(D) The imaginary part is zero.

3 0
3 years ago
Help please no links!!This is my concluding answer let me know if it's right or wrong please!!
Amanda [17]

yeah i guess you re right sorry for making confusion

6 0
3 years ago
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