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VARVARA [1.3K]
3 years ago
15

0,5.

le" class="latex-formula">-2.\sqrt{0,05}+\sqrt \frac{1}{4}
Mathematics
1 answer:
Komok [63]3 years ago
8 0

Answer:

0.21

Step-by-step explanation:

The given expression is :

0.5\times \sqrt{0.09}-2\sqrt{0.05}+\sqrt \frac{1}{4}

We need to solve it.

We know that,

\sqrt{0.09}=0.3\ and\ \sqrt{0.05}=0.223

So,

0.5\times \sqrt{0.09}-2\sqrt{0.05}+\sqrt \frac{1}{4}=0.5\times 0.3-2\times 0.22+0.5\\\\=0.21

or

=\dfrac{21}{100}

So, the value of the given expression is equal to 0.21.

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Grace ran 2 5/8 miles in 1/3 of an hour. Her afternoon run took only Her afternoon run took only 1/6 of an hour, but it was 1 1/
Anton [14]

Speed of Grace in morning :

v_m = \dfrac{2\dfrac{5}{8}}{\dfrac{1}{3}}\\\\\\v_m = \dfrac{\dfrac{21}{8}}{\dfrac{1}{3}}\\\\v_m = 7.875\ mph

Speed in evening :

v_e = \dfrac{\dfrac{21}{8}-\dfrac{5}{4}}{\dfrac{1}{6}}\\\\v_e = 8.25\ mph

Average speed :

v = \dfrac{v_m + v_e}{2}\\\\v = \dfrac{7.875+8.25}{2}\\\\v = 8.0625\ mph

Hence, this is the required solution.

8 0
3 years ago
Pa help naman po pa answer po plss​
yulyashka [42]

Answer:

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Length: 9

Step-by-step explanation:

P = 2( l + w)

26 = 2(2x + 1 + x)

26 = 2(3x + 1)

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6x = 24

x = 4

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8 0
3 years ago
Read 2 more answers
The path of a breaching ocra whale can be modeled by the function k(x) = x^2 - 2x - 8, where x is the time elapsed in seconds un
____ [38]

Answer:

The time duration of the ocra whale spends under water is 4 seconds

Step-by-step explanation:

The equation that model the path of the ocra whale is presented as follows;

k(x) = x² - 2·x - 8

Where;

x = The time elapsed in seconds under water

k(x) = The height in feet below water

Therefore, the point where the ocra whale enters the water, k(x) = 0

At the point of submerging below the water surface, we have;

k(x) = 0 = x² - 2·x - 8

Factorizing the quadratic equation gives;

0 = x² - 2·x - 8 = (x - 4)·(x + 2)

Therefore, when k(x) = 0, either;

(x - 4) = 0, which gives, x = 4

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Given that 'x' represent the time, the time elapsed while the whale is under water, x = 4 seconds

3 0
3 years ago
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antiseptic1488 [7]
Ok so suppose the theory that if you add two sides of a triangle together it will be more than the remaining side but it has to work for all three sides so the two sides 10+8=18 so the number has to be less than 18 but the number also has to be more than 3 because 8+3=11 and 11 is larger than ten. the answer is
3 \leqslant x \leqslant 17
7 0
3 years ago
What's the equation of the axis of symmetry of the function f(x) = x2 + 8x - 10?
larisa86 [58]

Answer:

x = -4

B is the answer

Step-by-step explanation:

To find the axis of symmetry, we will need to find the vertex of this function.

I have provided you with the steps to find the vertex.

After finding the vertex, pay attention to the x-value of the vertex because that is the axis of symmetry too. Hope this helps :)

4 0
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