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Makovka662 [10]
3 years ago
10

PLEASE BE QUICK!!! 15 POINTS!!! What is the area of the triangle QRS? _______ square units

Mathematics
2 answers:
Alika [10]3 years ago
8 0

Answer: 7 square units

salantis [7]3 years ago
3 0

Answer: 7

Step-by-step explanation:

You might be interested in
If a= 2ft and c= 11ft. Find the missing side of the right triangle
dlinn [17]

Answer:

\sqrt{117} or 3\sqrt{13}

Step-by-step explanation:

The formula for finding the any side of the triangle is

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

We know that a=2 and c=11, so we can go ahead and plug those into the formula.

2^{2}+b^{2} =11^{2}

4+b^{2} =121

To find side b, we have to make it alone on one side. Subtract 4 on both side.

b^{2} =117

Now square root both sides, and that leaves us with:

b=\sqrt{117} or 3\sqrt{13}

6 0
3 years ago
If y= -12 when x= 9<br> find y when x= -4
Andre45 [30]
This is a fraction. So it's y over x. So -12 over 9 equals y over -4. After you put those in fractions, you cross multiply. So -12(-4) is 48, and 9y. Then you set them equal to each other, so 48=9y. You divide 9 on both sides and your answer should be y=5.3
4 0
3 years ago
Alan is 5 years older than Bob. Bob is twice as old as Cindy. All their ages add up to 20. What are their ages?
Llana [10]
We can use a variable equation to solve this. Let A represent alan's age, B represent bob's age, and C represent Cindy's age. So Bob's age would be Alan's age - 5, or a -5 = B. Then Bob's age would be double Cindy's age, so that means 2 multiplied by Cindy's age = Bob's age, or 2C = B. Your two equations are: 

A - 5 = B
2C = B

Also a third equation that helps is A + B + C = 20.

Finally, here are the ages. 
Alan = 11 years old
Bob = 6 years old
Cindy = 3 years old.

PS: Sorry, I'm not that good at explaining things, but here are the answers
6 0
4 years ago
Kevin claims he can draw a trapezoid with three right angles. Is this possible? Explain.
MakcuM [25]
Using an indirect proof:

Assume that the figure is a trapezoid.
All trapezoids are quadrilaterals.
All quadrilaterals' interior angles add up to 360° because any n-gon's interior angles add up to 180(n-2)°.
We are given that the trapezoid has three right angles.
All right angles are 90°, thus these right angles have a total measure of 270°.
We can conclude fourth angle must be 90°.
If it has four right angles, it is a rectangle.
Rectangles have two sets of parallel sides.
However, trapezoids have exactly one set of parallel sides.
Alas, our figure cannot be a trapezoid.
8 0
3 years ago
Read 2 more answers
7(y+3)=5y+8<br> Is this <br> A.Solution<br> B.No Solution<br> C. Infinite Solution
faust18 [17]

First, let's use the Distributive Property to make our equation easier to solve. Remember that the Distributive Property says the following:

a(b + c) = ab + ac


Using this, we can multiply the 7 out to the y and 3. This gives us:

7y + 21 = 5y + 8


Now, let's solve for y:

2y + 21 = 8

2y = -13

y = - \dfrac{13}{2}


We can see that there is one solution for this equation because y is equal to one definite value after solving. Thus, our answer is A, one solution.  

3 0
4 years ago
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