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Nadusha1986 [10]
3 years ago
10

Two angles whose sum is 180?180? are said to be

Mathematics
1 answer:
harina [27]3 years ago
5 0
2 angles whose sum is 180 are supplementary angles
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Which shows the expression below simplified? 0.00028 ÷ (7 × 10-4)
Katyanochek1 [597]
0.\underbrace{00028}_{\rightarrow5places}=28\times10^{-5}\\\\0.00028:(7\times10^{-4})=\dfrac{28\times10^{-5}}{7\times10^{-4}}=\dfrac{28}{7}\times\dfrac{10^{-5}}{10^{-4}}\\\\=4\times10^{-5-(-4)}=4\times10^{-5+4}=\huge\boxed{4\times10^{-1}}\leftarrow\boxed{b.}\\\\used\ \dfrac{a^n}{a^m}=a^{n-m}
6 0
3 years ago
Stan pays a 10% deposit to put a pool table on lay-by.
Lera25 [3.4K]

Answer:

$1431

Step-by-step explanation:

If Stan pays a 10% deposit, he pays $159. 10% of $1590 is simply 0.1 * 1590 = 159. Assuming this is the only amount he pays, he then simply needs to pay the full price minus $159. We can find this by simply subtracting 159 from 1590 to get 1431. Stan still needs to pay $1431.

6 0
2 years ago
the angle of depression from an airplane at an altitude of 8000 feet to the airport is 7 degrees. Find the direct distance from
Aleks [24]

Answer:

direct distance = 65,644.07 feet

horizontal distance = 65,154.77 feet

Step-by-step explanation:

The angle of depression is the angle that the airplane does with the horizontal plane.

So, if this angle is 7° and the airplane is at an altitude if 8000 feet, we can find the direct distance and the horizontal distance using the tangent and the sine relations of the angle.

In the tangent of the angle, the opposite side will be the height of the airplane, and the adjacent side will be the horizontal distance (hd), so:

tangent(7) = 8000 / hd

hd = 8000 / tangent(7) = 65,154.77 feet

In the sine of the angle, the opposite side will be the height of the airplane, and the hypotenusa will be the direct distance (d), so:

sine(7) = 8000 / d

d = 8000 / sine(7) = 65,644.07 feet

5 0
3 years ago
Asher is asked to find the factors of 10. His work is below.
Assoli18 [71]

Answer:

  • B and D

Step-by-step explanation:

<u>Answer choices:</u>

A) Asher made errors in multiplication.

  • No, the products are correct

B) Asher found multiples of 10, not factors of 10.

  • Yes

C) Asher should have multiplied 10 × 4 as well.

  • No, 4 is not one of the factors of 10

D) Asher should have gotten this as the answer: 1, 2, 5, and 10.

  • Yes, these are the true factors of 10

E) Asher should have gotten this as the answer: 10, 20, 30, 40, …

  • No, the correct one is one before
5 0
2 years ago
A triangle has 2 sides of lengths 6 and 9. what value could the 3rd length be
Tpy6a [65]
Anything greater than 4 but less than 9
5 0
3 years ago
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