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astraxan [27]
3 years ago
8

Please help me now plz I will mark you brainliest

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0

Answer:

The vertex angle is 180-(60+75)=45.

k/sin75=900/sin45 so k=900sin75/sin45=1229km approx.

Step-by-step explanation:

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Is the sum of two rational numbers always rational
Pepsi [2]

Answer:

in short, Yes they are always rational.

here's why...

E.g. suppose \frac{c}{d} and \frac{a}{b} are fractions, that means that a,b,c,d are all integers, and b and d are not zero. finding the sum the numerator, and denominator would also have to be integers. the denominator of the sum can't be zero since the denominators of the fractions were not zero, and would give \frac{ad+bc}{bd} and since they are bound by addition (sum means addition) they must also be rational since eit would equal a bigger integer than initially had

Step-by-step explanation:

8 0
2 years ago
Find the value of x when the area of a triangle is 22 in2 and has a base of 3x-1 and height of x.
Virty [35]
The formula for the area of a triangle is (1/2)bh = A
when we plug in the numbers, we get (1/2)(3x-1)x = A
using the distributive property we get (1.5x - .5)x = A
Then its 1.5x^2 - .5x = A
then if we factor out 0.5x we get 0.5x(3x-1) = A
then with the zero product property, 0.5x can equal 0 and x would need to equal 0.
if 3x-1 = 0 , then 3x = 1 then x = 1/3. so our answer would be 1/3 I'm pretty sure because a length cannot be 0
5 0
3 years ago
Find the product. Simplify.<br> (a + 1)(a –5)=
Morgarella [4.7K]

Answer:

(a + 1)(a - 5) \\   {a}^{2}  - 5a +  a- 5 \\  {a}^{2}  - 4 a- 5

4 0
3 years ago
Please help, I’ll mark as brainliest!! The picture is above :)
Ray Of Light [21]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable

Exact Form:

x = - 25/8 \frac{x}{y}

Decimal Form:

x = -3.125

Mixed Number Form:

x = - 3/1/8 \frac{x}{y}

Step-by-step explanation:

5 0
2 years ago
The following spinner will be spun and a coin will be flipped. If Audrey spins the spinner once and flips the coin once, then cr
Papessa [141]

Answer:

I cant help if there is not a picture of the spinner because I dont know how many sections are there.

Step-by-step explanation:

3 0
3 years ago
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