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AveGali [126]
3 years ago
13

The area of triangle PQR is 231 cm2 , and PQ = 21 cm. Find the altitude SR. Help me solve this

Mathematics
1 answer:
Shtirlitz [24]3 years ago
3 0

Answer:

SR = 22 cm

Step-by-step explanation:

area = bh/2

(21 cm)(h)/2 = 231 cm^2

21h = 462 cm

h = 22 cm

SR = 22 cm

You might be interested in
Volume= 27cm3<br> Density =5 g/cm3<br> Mass=
Free_Kalibri [48]

Answer:

135g

Step-by-step explanation:

\boxed{mass = density \times volume}

Given: density= 5g/cm³, volume= 27cm³

Mass

= 5 ×27

= 135g

5 0
3 years ago
Four points are always coplanar if they: check all that apply.
Deffense [45]

Answer:

B. lie on different lines

Step-by-step explanation:

8 0
2 years ago
numbers of the wide waters Club pay $105 per summer season plus $9.50 each time they rent a boat non members must pay $14.75 eac
Ahat [919]

The member pays  $9.50  to take a boat out,
plus  $105  just to be a member.

Let's call ' R ' the number of rentals

               Member Cost  =  (9.50 times R) + 105

        Non-member cost  =  (14.75 times R) .

You're interested in  when their costs are equal,
so at that point, we can write ...

           Member cost  =  non-member cost

                 9.5 R + 105  =  14.75 R

Subtract  9.5 R  from each side:  105  =  5.25 R

Divide each side by  5.25 :             20  =  R  

If you're going to rent a boat less than 20 times during the
Summer season, rent them at the non-member rate.

More than 20 times in 1 Summer, you'll save money by being
a member.  

This sounds a bit extreme to me.  If the Summer season means
ALL of May, June, July, August, and September, then you would
need to average more than one rental every 7.65 days ... a hair
more than one a week ... in order to save any money by being a
member.  I love sailboat rental, and I live just 2 miles from Lake
Michigan, but even at these prices (cheap), I would never average
a rental every week for 5 months.   So for me, there would be no
benefit in a membership ... at least not in the cost of boat rental.        

========================================

Another way to do it, with more brain but less algebra:

Each time a member rents a boat, he pays  (14.75 - 9.50) = 5.25
LESS than a non-member would pay to rent the same boat.
But in order to get that deal, he had to pay $105 "up front", at the
beginning of the season, before he ever rented anything.

How many times does he have to 'save' $5.25 before he makes up
for the the  $105 ?

           ($105) / ($5.25)  =  20 times .

8 0
3 years ago
Read 2 more answers
Can someone please answer this question?
Vlad [161]

Answer:

I believe the answer is A or D

Step-by-step explanation:

8 0
3 years ago
Ernie has 3 bagels to split with himself, his wife, and his 2 kids. If the bagels are split equally, how much will each person g
Vikki [24]

Answer: 3/4 or 0.75

Step-by-step explanation:

Since Ernie wants to split the 3 bagels with himself, his wife, and his 2 kids, this means the 3 bagels will be divided among 4 people.

Therefore, the amount received by each person will be:

= 3/4

= 0.75

Each person gets 0.75 bagel.

3 0
3 years ago
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