1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
saveliy_v [14]
3 years ago
7

Anja is creating a triangle using three straws. The two shorter straws have lengths of 20 cm and 21 cm. How long, in centimeters

, should the third straw be for Anja to create a right triangle?
Mathematics
1 answer:
Digiron [165]3 years ago
3 0
A^2 + b^2 = c^2...a and b are the legs and c is the hypotenuse
20^2 + 21^2 = c^2
400 + 441 = c^2
841 = c^2
sqrt 841 = c
29 = c <== third straw will be 29 cm
You might be interested in
Help Please!!! 20 points!
Mazyrski [523]
-6/16.................brainilyst???? plz シ
3 0
3 years ago
Help within 10 min pleeeeeeeeeease
sineoko [7]
The answer should be 75
4 0
2 years ago
Read 2 more answers
This set of points is on the graph of a function.
Korolek [52]
(-1,1) and (0,0) are probably it
8 0
3 years ago
A rectangular plot of land is to be enclosed by a fence. One side is along a river, and does not need to be enclosed. If the tot
Bad White [126]

Answer:

Width 150 meters.

Length = 350 meters.

Step-by-step explanation:

Let us assume the  width of  the fence = k meters

So, both sides = k + k = 2k meters

Also, the TOTAL fencing length = 600 m

So, the one side length of the fence = (600 - 2 k) meters

AREA = LENGTH x WIDTH

⇒ A(k)  = (600 - 2k) (k)

or, A =  -2k² + 600 k

The above equation is of the form: ax² +bx +  C

Here: a  = - 2 , b = 600 and C = 0

As a< 0, the parabola opens DOWNWARDS.

Here, x value is given as:  x = \frac{-b}{2a}

Solving for the value of k similarly, we get:

k = \frac{-b}{2a}  = \frac{600}{2(-2)}  = 150

Thus the desired width = k = 150 meters

So, the desired dimensions of the plot  is width 150 meters.

And length = 650 - 2k = 650 - 300 = 350 meters.

5 0
2 years ago
Steven just got a new summer job painting fences in his neighborhood. He will be paid $7.25 an hour. His first customer paid him
mote1985 [20]

Answer:

a). The equation; 7.25 h-36.25=0

b). total number of hours Steven work=5 hours

Step-by-step explanation:

Part A

The expression for the total money earned is as follows;

T=E×h

where;

T=total earnings

E=earnings per hour

h=number of hours worked

In our case;

T=$36.25

E=$7.25

h=h

replacing;

36.25=(7.25×h)

36.25=7.25 h

The equation would be; 7.25 h=36.25, or 7.25 h-36.25=0

Part B

7.25 h=36.25

h=36.25/7.25

h=5

total number of hours Steven work=5 hours

5 0
2 years ago
Other questions:
  • what is area of living room in square feet when scaled at 3 inches x 5.5 inches at 1:30 rounding ansert to nearest whole
    11·1 answer
  • A winter jacket is marked down 75% from its original price. According to the new price tag, it now costs $52.50. What was the or
    11·2 answers
  • Rounding to hundreds or thousands
    13·1 answer
  • Help please................................................
    9·2 answers
  • Pls help it’s solve the expression it’s in the attatchmenr
    13·1 answer
  • Janai goes to dinner and the bill comes to $50.00. She has a coupon for 10% off. Tax is 8%. What is her total bill?
    5·1 answer
  • Find the value of x. Only need 7 and 9 answered.
    8·1 answer
  • A solid has twelve more edges than faces. How many vertices does it have?
    13·1 answer
  • PLEASE HELP. 50 POINTS. WILL MARK BRAINLIEST​
    11·1 answer
  • HELP me pleaseee I can’t do it ima drop
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!