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mina [271]
3 years ago
11

Whoever answers these 2 right gets brainliest and 25 points!

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0
The first one is B and the second one is C
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Reflect B (2,7) over the y-axis
8_murik_8 [283]
Q: Reflect B (2,7) over the y-axis

Answer:
(-2,7)

Hope this helps! Feel free to comment on this reply if you have any questions. :)
3 0
2 years ago
For the right triangles below, find the exact values of the side lengths b and d.
Ivanshal [37]

Answer:

Step-by-step explanation:

The question lacks the required diagram. Find the diagram attached below;

According to the first triangle, taking 30° as the reference angle, the opposite side of the triangle will be 5 and the adjacent will be the unknown side "b"

According to SOH, CAH, TOA;

tanθ = opposite/adjacent (using TOA)

Given;

θ = 30°, opposite = 5 and adjacent = b

tan30° = 5/b

b = 5/tan30°

b = 5/(1/√3)

b = 5*√3/1

b = 5√3

According to the 45° triangle, the opposite side of the triangle will be d and the hypotenuse will be 7

Using SOH;

sinθ = opposite/hypotenuse

Given;

θ = 45°, opposite = d and adjacent = 7

sin45° = d/7

d = 7sin45°

d = 7(1/√2)

d = 7/√2

Rationalize 7/√2

= 7/√2*√2/√2

=7√2/2

Hence the value of d is 7√2/2

7 0
2 years ago
Need Help which expression is equal to
a_sh-v [17]

Answer:

4^0

Step-by-step explanation:

whenever the number is to the power of 0 it equals 1

4^5 x 4^-7 ÷ 4^-2 = 1

4^0 = 1

3 0
2 years ago
I need help can someone help please
kherson [118]
What do you need help on? There isn’t a picture or anything.
7 0
2 years ago
Solve the linear equation 2x+2/4=189.5
seraphim [82]
Change 2/4 to 1/2
<span><span>2x+<span>1/2</span>=189.5</span></span>
Subtract <span>1/2</span> from both sides(1/2 = .5)
2x=189
Divide both sides by <span>2</span>
2x/2 = x
189/2= 94.5
x=94.5


6 0
3 years ago
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