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Mars2501 [29]
3 years ago
10

(15×4)÷6[{32÷4(7×2-15+5)}+3]​plz show it with explain

Mathematics
1 answer:
VMariaS [17]3 years ago
6 0

(15×4)÷6[{32÷4(7×2-15+5)}+3]

=60÷6[{32÷4(14-15+5)}+3]

=60÷6[{32÷4(19-15)}+3]

=60÷6[{32÷4(4)}+3]

=60÷6[{32÷16}+3]

=60÷6[{2}+3]

=60÷6[5]

=60÷30

=2

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A pole 11 feet tall is used to support a guy wire for a tower, which runs from the tower to a metal stake in the ground. After p
umka21 [38]

Answer:

48 ft

Step-by-step explanation:

Here, we want to find the length of the wire

from the diagram, we can identify two similar triangles

The smaller one and a bigger one

Mathematically, when two triangles are similar, the ratio of their corresponding sides are equal

We can start by getting the height of the tower

we have this as:

8/11 = 28/x

8 * x = 28 * 11

8x = 308

x = 308/8

x = 38.5 ft

So as we can see, the wire represents the hypotenuse of the larger triangle that measures 28 ft base and 38.5 ft height

So we can use the Pythagoras’ theorem to get the hypotenuse

Let us call this g

mathematically according to the theorem, the square of the hypotenuse equals the sum of the squares of the two other sides

thus, we have it that;

g^2 = 38.5^2 + 28^2

g^2 = 2,266.25

g = √2,266.25

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7 0
3 years ago
Write each rational number as a decimal. A)17/40 B)11/24
scZoUnD [109]

A)17/40 = 0.425

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4 0
4 years ago
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Which of the following is the statement below describing? If a point is on the bisector of an angle, then it is equidistant from
Yuki888 [10]
Well its using the angle bisector theorem, so i think that the anwser
8 0
3 years ago
Need help on this please
vovikov84 [41]

9514 1404 393

Answer:

  71°

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary.

  ∠H = 180° -109° = 71°

_____

<em>Additional comment</em>

The above rule comes from the more general rule that the measure of an inscribed angle is half the measure of the arc it intercepts. Here, inscribed angle J intercepts arc GHI, so that arc has measure 2×109°. Then the measure of short arc GI is 360° -2×109°, and inscribed angle H is half that:

  ∠H = (1/2)(360° -2×109°)

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6 0
3 years ago
7 times 8 help pls I am sorry for a wasteful
Anuta_ua [19.1K]

Answer:

56

Step-by-step explanation:

Think of it this way, 7 times 10 is 70.

7*8 is 2 less 7s, or 14 less.

70-14=56

Or, a simpler way:

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One more seven than that is 56.

These are just two ways I quikcly remember, because for some reason I struggle with 7 and 8 mulitplication.

Hope this helps!

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