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e-lub [12.9K]
2 years ago
8

PLEASE PLEASE HELP PLEASE

Mathematics
1 answer:
kogti [31]2 years ago
3 0

Answer:

r = 6

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

PR² = PQ² + QR² , substitute values

(r + 4)² = r² + 8²

r² + 8r + 16 = r² + 64 ( subtract r² from both sides )

8r + 16 = 64 ( subtract 16 from both sides )

8r = 48 ( divide both sides by 8 )

r = 6

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Please Help!!!
Mkey [24]
The equation looks like this:

26=x*3.5+8.50

where x is the number of pen you bought.

We solve it like this:
first, we subtract 8.50 from both sides:

17.50 =3.5*x

now we divide both sides by 3.5:
5=x

so you purchased 5 pens.

3 0
3 years ago
Find the slope, or rate of change, from the graph.
TEA [102]

Answer:

-1/2

Step-by-step explanation:

slope is rise over run

or y change divided by x change

to find the slope you need to find points on the graph that meet exact points on the graph

i see (0,1) and (2,0)

to find slope without graph it would be (y2-y1)/(x2-x1)

in this case (0-1)/(2-0)

=-1/2

with graph you can count that it goes down -1 squares and to the right 2 squares

hope this helps

4 0
3 years ago
Read 2 more answers
Help fast worth 10points
Nina [5.8K]

Answer:

30 ( I think so)

Step-by-step explanation:

Well, the total measurement 4 a triangle is 90. So 60 and 60 is 120 so it should be 30. If not I am sorry for being wrong.

7 0
3 years ago
! et up your proportions) Eduardo counted eight seconds between seeing lightning and hearing thunder, and he knew that the light
vova2212 [387]

Answer:

1 mile away this is right

3 0
3 years ago
Suppose that $1,000 is deposited into an account that yields
Lana71 [14]
ANSWER : $1,215.51

P= Principal = $1000
R= rate = 5% = 0.05
N= number or periods in 1 year (1 time pre year)
T= time expressed in years = 4 years

A= P (1 + r/n) nxt
= 1,000 (1+ 0.05/1) 1x4
= 1,215.51

6 0
3 years ago
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