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solmaris [256]
3 years ago
5

Can someone help me i'll mark brailiest

Mathematics
1 answer:
OlgaM077 [116]3 years ago
4 0

Answer:

thanks for the points and God bless you

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PLEASE HELP ME IM STRUGGLING!!!
Kitty [74]

Answer:

The required answer is c=7\sqrt{3}

Therefore the number in green box should be 7.

Step-by-step explanation:

Given:

AB = 7√2

AD = a , BD = b , DC = c , AC = d

∠B = 45°, ∠C = 30°

To Find:

c = ?

Solution:

In Right Angle Triangle ABD Sine identity we have

\sin B = \dfrac{\textrm{side opposite to angle B}}{Hypotenuse}\\

Substituting the values we get

\sin 45 = \dfrac{AD}{AB}= \dfrac{a}{7\sqrt{2}}

\dfrac{1}{\sqrt{2}}= \dfrac{a}{7\sqrt{2}}\\\\\therefore a=7

Now in Triangle ADC Tangent identity we have

\tan C = \dfrac{\textrm{side opposite to angle C}}{\textrm{side adjacent to angle C}}

Substituting the values we get

\tan 30 = \dfrac{AD}{DC}= \dfrac{a}{c}\\\\\dfrac{1}{\sqrt{3}}=\dfrac{7}{c}\\\\\therefore c=7\sqrt{3}

The required answer is c=7\sqrt{3}

8 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST!!!!!!
Luden [163]

Answer:

C. 114

Step-by-step explanation:

bikes have 2 wheels

skateboards have 4 wheels

incline skates have 8 wheels in total

7*2 = 14

9*4 = 36

8*8 = 64

if you add all of these up you get 114 wheels in total. 8*8 was from 24-7-9 = 8

8 0
3 years ago
If all the sides of a triangle get 2 times as big, how much does the area change?
KIM [24]

Answer:

Step-by-step explanation:

area becomes 2²=4  times.

4 0
3 years ago
A coach is ordering shirts for a team
oee [108]

Answer:

Step-by-step explanation:

Yes its B C=8k+24

5 0
4 years ago
Read 2 more answers
your ultra-modern store is one-story round. your square footage is 31,416. What is the diameter of you store ? Area of a circle
zaharov [31]

Answer:

199.96 feet

Step-by-step explanation:

The base of the ultra-modern store is of a round shape.

The area of the base is 31416 square feet.

We have to find the diameter of the base.

Now, the area of a circle is given by A = \pi r^{2}

⇒ 31416 = \frac{22}{7} \times r^{2}

⇒ r^{2} = \frac{31416 \times 7}{22} = 9996

⇒ r= \sqrt{9996} = 99.97 feet.

Therefore, diameter = 2r = 199.96 feet. (Answer)

8 0
3 years ago
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