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OleMash [197]
2 years ago
6

Write the tangent of ∠T as a fraction

Mathematics
1 answer:
Naddik [55]2 years ago
3 0

Answer:

\tan \angle T = \dfrac{SR}{TS} = \dfrac 43

Step-by-step explanation:

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How do you find the <br> y-intercept and the slope for number 11
Sophie [7]
The first step is to find the slope. Use the slope formula

m = (y2-y1)/(x2-x1)

The two points are (x1,y1) = (-1,5) and (x2,y2) = (2,-1)

So,
x1 = -1
y1 = 5
and
x2 = 2
y2 = -1
will be plugged into the slope formula to get...
m = (y2-y1)/(x2-x1)
m = (-1-5)/(2-(-1))
m = (-1-5)/(2+1)
m = (-6)/(3)
m = -2

The slope is -2

Use m = -2 and one of the points to find the y intercept b. I'll use the point (x,y) = (-1,5) ---> x = -1, y = 5

y = mx+b ... slope intercept form
5 = -2*(-1)+b
5 = 2+b
5-2 = 2+b-2
3 = b
b = 3

The y intercept is 3

-----------------------------------

m = -2 is the slope
b = 3 is the y intercept

Therefore y = mx+b turns into y = -2x+3 as the equation that goes through the two points
6 0
3 years ago
Question 10
Anna11 [10]

Answer:

6,000 dollars

Step-by-step explanation:

We first need to find out how much it would cost Danielle for a month if she chose the second option

200 + 40 = 240

240 x 30 = 7,200

Now that we know how much Danielle would pay if she chose the second option, now we need to find out how much she <em>saved</em>.

7,200 - 1,200 = 6,000

So Danielle saved 6,000 dollars by choosing the first option instead of the second one.

4 0
3 years ago
If you had to subtract 426 from 913 how many times would you need to regroup ?
Kitty [74]

  913

<u> - 426 </u>

<u />487 would be your total but your question is how many times we would have to regroup, so.

<u />

First, you would have to borrow from the 1 because 3 is smaller then 6. Second, you would have to borrow from the 9 because you can't take 2 from 0. So there you would have to regroup twice to work this problem.

Hope that helps you. :-)

7 0
3 years ago
Read 2 more answers
Someone help me pleaseeeee​
Dafna11 [192]

In an isosceles triangle, there are two sides that are congruent.

In this case, AB and BC are congruent.

Knowing this, we know that AB = BC

Since we know the values of AB and BC, we can put them into the equation:

3x - 4 = 5x - 10

Subtract 3x from both sides:

-4 = 2x - 10

Add 10 to both sides to isolate 'x':

6 = 2x

Divide both sides by 2:

x = 3

Now that we know the value of the variable, we just have to input it into AB's equation:

3x - 4 = 3(3) - 4

3(3) - 4 = 9 - 4

9 - 4 = 5

<u>AB = 5</u>

Good luck!

5 0
3 years ago
Prove that if a is equivalent to 5 mod (8) and b is equivalent to 3 mod (8), then 8 divides ab+1
olga nikolaevna [1]

Answer:

Explanation contains the proof.

Step-by-step explanation:

a \equiv 5 (mod 8) \text{ means there is integer } k \text{ such that } a-5=8k.

b \eqiv 3 (mod 8) \text{ means there is integer } m \text{ such that } b-3=8m.

We want to show that 8 \text{ divides } ab+1.  So we are asked to show that there exist integer n \text{ such that } 8n=ab+1 \text{ or 8n-1=ab

So what is ab?

a-5=8k \text{ gives us } a=8k+5.

b-5=8m \text{ gives us } b=8m+5.

So back to ab....

ab

=(8k+5)(8m+5)

=64km+40k+40m+25  (I use foil to get this)

Factoring out 8 gives us:

=8(8km+5k+5m)+25

Now I could have factored some 8's out of 25.  There are actually three 8's in 25 with a remainder of 1.

=8(8km+5k+5m+3)+1

We have shown that there is integer n \text{ such that } ab=8n-1.

The integer I found that is n is 8km+5k+5m+3.

Therefore 8|(ab+1).

//

5 0
2 years ago
Read 2 more answers
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