All categories

3 years ago

PLEASE HELP!! Image Attached! find the value of y, rounded to the nearest tenth

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

7 0

Answer: y is equal to 3.89,

Step-by-step explanation: This question can be solved using the theorem of the power of a point.

The power of a point Theorem states that if a two lines intercept at a point that is intersect with the center of the circle, the lines will create either one segment (S) or two segments (s1 and s2). And the multiplication of each segment equal, which is s1s2 for line one is equal to s1s2 for line two.

Therefore for the diagram.

Using the power of a point Theorem;

9 ×y = 5 × 7

9y = 35

Therefore;

y = 35 ÷ 9 = 3.88889

y = 3.89

m_a_m_a [10]3 years ago

5 0

5 * 7 = 9y
35 = 9y
<span> <span> <span> 3.8888888889 </span> </span> </span>
y = 3.9

You might be interested in

Ramil and Carly decided to make more baked goods for the bake sale. They used one fourth less flour to make bread than cookies.

ycow [4]

Answer:

The answer is: amount of flour used for bread and brownies is same

Step-by-step explanation:

Step 1:

Assume;

Flour used for cookies = x

Flour used for bread = z

Flour used for brownies = y

Flour used for cookies = a

Step 2:

Now, for bread as mentioned flour used for bread is one fourth less than flour used in cookies therefore;

z = x - (1/4)x

z = x-0.25x

z = 0.75x

Step 3:

Now, for cookies as mentioned flour used for cookies is one third more than flour used in brownies therefore;

x = (1/3)y + y

x = 0.33y + y

x = 1.33y

Step 5:

Value of z from step 2:

z = 0.75x

now put value of x from step 3 in above equation;

z= 0.75 (1.33y)

z = (1) y

hence proved;

z = y

5 0

3 years ago

Can anyone help me answer this?

saw5 [17]

Answer: X=12.7

Step-by-step explanation:

Sorry if its wrong I am pretty rusty with these kind of questions

7 0

2 years ago

What is the length of DE

HACTEHA [7]

Answer:

DE = 20units

Step-by-step explanation:

In Δ ABC,

angle A is congruent to angle B.... (given)

therefore, ΔABC is an isoceles triangle.

therefore, CA = CB..... (side opposite to congruent angles are congruent in an isoceles triangle)

therefore, CB = 4 units

In ΔCDE,

angle D is congruent to angle E.... (given)

therefore, ΔCDE is an isoceles triangle.

therefore, CD = CE

therefore, CD = 8 units

ΔCDE ~ ΔCBA

therefore,

$\frac{cd}{cb} = \frac{ce}{ca} = \frac{de}{ab} \\ therefore \: \frac{8}{4} = \frac{8}{4} = \frac{de}{10 } \\ therefore \\ \frac{2}{1 } = \frac{de}{10 } \\ de \: = 2 \times 10 = 20units$

8 0

2 years ago

I don't understand???? I'll give the brainliest!!!!!

olasank [31]

Answer:

Option A is the correct option.

Step-by-step explanation:

${a}^{2} + {b}^{2} - 2ab \: \cos \: c \: = {c}^{2} \\ a = 4 \\ b = 5 \\ c = 2 \\ \\ 2ab \: cos \: c = {a}^{2} + {b}^{2} - {c}^{2} \\ \: \: \: \: \: \: \: \: = {(4)}^{2} + {(5)}^{2} - {(2)}^{2} \\ \: \: \: \: \: \: \: \: = 16 + 25 - 4 \\ \: \: \: \: \: \: = 41 - 4 \\ \: \: \: \: \: \: = 37$

Hope this helps...

Good luck on your assignment...

6 0

3 years ago

Please help question in the picture

anzhelika [568]

Answer:

Step-by-step explanation:

40 squared is 1600

30 squared is 900

1600+900=2500

$\sqrt{2500}$ =50

6 0

3 years ago