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LiRa [457]
3 years ago
15

Can you answer the first question for me

Mathematics
2 answers:
loris [4]3 years ago
5 0
All are true except d 
Lera25 [3.4K]3 years ago
5 0
1
a) yes
b) yes
c) yes
d) yes
e) no
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Grade 8th Math Question answer
GrogVix [38]
The top left (-5,7)
Middle right (5,1)
4 0
3 years ago
Find the value of each variable. Answer in simplest radical form.
Vlada [557]

Answer:

x = 5√3; y = 5

Step-by-step explanation:

Finding y:  The sine function links the 30° angle, the 10 unit hypotenuse and the side opposite the angle, y:

sin 30° = 1/2 = y/10

                                 

Solve the equation of ratios

1        y

-- = -----  using cross-multiplication first:  2y = 10 → y = 5

2     10

We can now find x either by using a similar approach and the cosine function or by using the Pythagorean Theorem:

x² + y² = 10² = 100  →  x² = 100 - y²  =  100 - 5²  = 75

If x² = 75, then x = ±√75 = ± (√25)·(√3)   →  ±5√3

Since lengths are always positive,   take x = 5√3 as the answer.

8 0
3 years ago
Can some one please help meeee
adoni [48]

Answe:

12

Explanation:

36/3=12

Because in the question it’s written that it costs 3 time the shirt.

For checking we can do 12 multiply by 3 we will get 36.

And good luck.!

3 0
3 years ago
Read 2 more answers
Can someone pls help with this? i’ll give brainliest :)
raketka [301]

Answer:

D (I think)

Step-by-step explanation:

I used a right triangle calculator and that was the answer

Below is the process the calculator did, hope it helps.

c = \sqrt{a^{2} +b^{2}

\sqrt{12^{2} + 9^{2} } = 15

6 0
2 years ago
Complete the square to form a perfect square trinomial x^2-14x+
fiasKO [112]
Answer: x^2 - 14x + 49

Explanation:

1) Divide the coefficient of x by 2:

14 / 2 = 7

2) so you have to add 7^2 = 49

x^2 - 14x + 49

3) that trinomial is equivalent to:

=> (x - 7)^2

4) prove that using the formula (a - b)^2 = a^2 - 2ab + b^2

(x - 7)^2  = x^2 - 14x + 49

Then you have to add 49 to complete the square. and form a perfect square trinomial.
7 0
3 years ago
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