4 years ago

What is the value of [-12]

Mathematics

1 answer:

algol134 years ago

7 0

Answer:

12.

Step-by-step explanation:

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Franco is solving a system of linear equations algebraically. He find that there

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Answer:

B. 5=5

Step-by-step explanation:

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3 years ago

-3x − 5 = 16<br> What would x = ?

kari74 [83]

Answer:

Step-by-step explanation:

-3x=16+5

-3x=21

x=21/-3

x= -7

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3 years ago

Triangle KNM is shown. Triangle K N M is shown. Angle M K N is 25 degrees. Angle K N M is 130 degrees. Angle N M K is 25 degrees

mars1129 [50]

Answer:

<h3>Two of the sides of triangle KNM are the equal</h3>

Step-by-step explanation:

From the triangle KNM, we can see that two of the angles M K N and Angle N M K are the same. If two of the angles are equal this means that two of the sides of the triangles are also equal. This type of triangle is known as an ISOSCELES TRIANGLE.

An isosceles triangle is a triangle that has two of its angles and sides to be equal.

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2 years ago

A gym has yoga classes. Each class has students. If there are classes, write an equation to represent the total number of studen

zzz [600]

Answer:

s = 14c

Step-by-step explanation:

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3 years ago

To measure the height of a tree, a surveyor walked a short distance from the tree and found the angle of elevation was 43.9°, th

padilas [110]

Answer:

The height of the tree is H = 77.06 m

Step-by-step explanation:

From Δ ABC

AB = height of the tree

$\tan 43.9 = \frac{AB}{BC}$

$\tan 43.9 = \frac{h}{x}$

h = 0.9623 x ------- (1)

From Δ ABD

$\tan 37.6 = \frac{h}{20+ x}$

h = 0.77 (x + 20) ----- (2)

Equating Equation 1 & 2 we get

0.9623 x = 0.77 (x + 20)

0.9623 x = 0.77 x + 15.4

x (0.1923) = 15.4

x = 80.08 m

Thus the height of the tree is given by

H = 0.9623 x

H = 0.9623 × 80.08

H = 77.06 m

Therefore the height of the tree is H = 77.06 m

4 0

4 years ago