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IRINA_888 [86]
4 years ago
15

Which of these is equal to sin 21°?

Mathematics
2 answers:
gladu [14]4 years ago
6 0

Answer:

The answer is B on the USATestprep.

MAVERICK [17]4 years ago
3 0
I believe the correct answer would be A. If not, if u get a second chance it would be B
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The straight line joining the points A(3,-5) and B(6,k) has a gradient of 4. Work out the value of k.
BaLLatris [955]

The straight line joining the points A(3,-5) and B(6,k) has a gradient of 4.

Gradient is the slope

So the slope of the line joining the points A(3,-5) and B(6,k) is 4

Slope of line joining two points = \frac{y_2-y_1}{x_2-x_1}

A(3,-5) and B(6,k) are (x1,y1)  and (x2,y2)

slope = \frac{y_2-y_1}{x_2-x_1}

slope = \frac{k-(-5)}{6-3}=\frac{k+5)}{3}

We know slope =4

 \frac{k+5)}{3}=4

Cross multiply  and solve for k

k + 5 = 12

k = 7

The value of k = 7

7 0
3 years ago
What do a parallelogram and kite have in common?
grigory [225]
They both have 4 congruent sides and angles.
4 0
4 years ago
I'm having trouble figuring out how I could go about this. Can someone work it out then explain so that I know how to do this ne
skad [1K]

Answer:

RT-ST=QS-ST, because subtracting the same quantity from two lines that have been stated to be equal.

Therefore RS=TQ

Angle R=Angle Q, because it is an isosceles triangle

Triangle AR

S is congruent to ATQ.

AT=AS

Because TAS is isosceles, angles 5 and 6 are equal.

Therefore, angles 4 and 7 are equal, because they are supplementary angles of the same angle.

And angles 1 and 3 are equal, because the other two angles in the triangle are equal.

The triangles RAT and QAS are congruent with SAS.

Step-by-step explanation: Can u gimme brain plz!

6 0
3 years ago
Will give brainliest to first right answer. Before a sale an items price was $28.00 then after being discounted the price was $1
matrenka [14]
The discount was 48%. The original price was $28.00, but the new price was $14.60.
8 0
3 years ago
Read 2 more answers
Your friend is 1.2 times taller than you. Your friend is 64.5 inches tall. How tall are you?
krok68 [10]
You have to divide your friends weigh by 1.2 to get  the result. : if you were 1.2 times taller than they, you would multiply, so the oppisite is dividing!

so  it will be 64.5/1.2=53.75.


6 0
3 years ago
Read 2 more answers
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