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blondinia [14]
3 years ago
14

Solve the equation. Then check your solution.

Mathematics
2 answers:
ElenaW [278]3 years ago
7 0

Step-by-step explanation:

4/5+x=3/7

x=3/7-4/5

x=15-28/35

x= -13/35 option D

const2013 [10]3 years ago
3 0

Answer:

(d) -13/35

Step-by-step explanation:

\cfrac{4}{5} + x = \cfrac{3}{7}  \\ \\ \\ x = \cfrac{3}{7} - \cfrac{4}{5}\\ \\ \\  x = \cfrac{3 \times 5}{7 \times 5} - \cfrac{4 \times 7}{5 \times 7} \\ \\ \\  x = \cfrac{15}{35} - \cfrac{28}{35} \\ \\ \\ x = \cfrac{-13}{35} \\ \\ \\ x = -\cfrac{13}{35}

Answer : (d) -13/35

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The angle between the ground at the top of a flag pole is 25o when the observer is at point A. The observer walks 10 m directly
gladu [14]

Answer:

12.4967 m

≈  12.5 m

Step-by-step explanation:

From the solution diagram attached, to find /AB/, we apply sine rule:

AB/Sin 140° =AD/Sin 15°

AB = 10/Sin 15° x Sin 140°

     = 24.8372 m

To calculate the height of the pole we will calculate BC first. Using the right angle triangle ∠ABC, we have:

Sin ∅  =  BC/AB

Sin 25° =   BC/ 24.8372

BC = 24.8372 Sin 25°

    =  10.4967 m

The height of the pole =  BC + 2.0

                                      =  10.4967 + 2.0

                                      = 12.4967

                                     ≈  12.5 m

5 0
2 years ago
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Step-by-step explanation:

3 0
3 years ago
Which transformation, when performed on the triangle ABC, will result in the transformed figure A'B'C being similar but NOT cong
Gnoma [55]

Answer:

b. a dilation by a scale factor of 2

Step-by-step explanation:

Which transformation, when performed on the triangle ABC, will result in the transformed figure

A'B'C' being similar but NOT congruent to the original triangle?

a. a reflection over the x-axis

b. a dilation by a scale factor of 2

C.a translation two units to the right

d. a rotation 90° clockwise about the origin

Solution:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, translation, reflection and dilation.

Rigid transformation are transformation that preserves the size and shape of a figure. Examples of rigid transformation are reflection, translation and rotation.

Dilation preserves the shape but not the size of a figure.

If translation, rotation or reflection is done on triangle ABC, the transformed figure would be congruent to the original triangle. But, if dilation is done, the transformed figure would be similar but NOT congruent to the original triangle.

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3 years ago
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Answer:

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5 0
3 years ago
Rose bought 7/20 kilogram of ginger candy and 0.4 kilogram of cinnamon candy. Which did she buy more of? Explain how you know.
malfutka [58]
7/20= .35 and .4 can also be .40 so rose bought more ginger
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2 years ago
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