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Degger [83]
3 years ago
13

What is the value of each expression? 11+ (-7)​

Mathematics
1 answer:
Wittaler [7]3 years ago
3 0

Answer:

<h2>4</h2>

Step-by-step explanation:

11 + (-7)

= 11 - 7

= 4

<h3>#Let'sLearn</h3><h3>#AyoBelajar</h3>
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Dane są długości przyprostokątnych trójkąta prostokątnego .Oblicz długość jego przeciwprostokątnej .Do obliczeń możesz użyć kalk
Lina20 [59]

Answer:

26

75

37

82

145

34

Step-by-step explanation:

Hypotenuse of a right angle triangle from pythagoras theorem is given by

h²=b²+a²

Making h the subject

h=√(b²+a²)

Where h is hypotenuse, b is base and a is the other side of a triangle

10²+24²=676

√676=26 units

72²+21²=5625

√5625=75 units

12²+35²=1369

√1369=37 units

18²+80²=6724

√6724=82 units

105²+100²=21025

√21025=145 units

16²+30²=1156

√1156=34 units

5 0
3 years ago
Find the value of a and b<br><br> a^2 + b^2 = 400
Oliga [24]

Answer:

Step-by-step explanation:

a^2+b^2=400

a^2=400-b^2

a=sqrt(400-b^2) & -sqrt(400-b^2)

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

b^2=400-a^2

b=sqrt(400-a^2) & -sqrt(400-a^2)

7 0
4 years ago
Read 2 more answers
Find the simple interest for a $8,000 loan for 2 years at a rate of 4% (formula: l=prt)​
Natali [406]

Answer:

S.I= 640

Step-by-step explanation:

I=prt

where p= $8,000

and r= 4%

and t= 2 years

$8,000×4%×2

8,000×4/100×2

80×4×2

=640

Therefore The S.I = 640.

6 0
3 years ago
During summer, when the snow melts, the water level of the Yukon River increases. If the water level of the river increased by 7
kondaur [170]

Answer:

13 centimeters per day.

Step-by-step explanation:

We have been given that during summer, the water level of the river increased by 78 centimeters in 6 days. We are asked to find the water level increase rate in centimeters per day.

To find the water level increase rate per day, we will divide total increase by total days as:

\text{Water level increase rate per day}=\frac{78\text{ cm}}{6\text{ days}}

\text{Water level increase rate per day}=\frac{13\text{ cm}}{\text{ day}}

Therefore, the water level increase rate is 13 centimeters per day.

5 0
3 years ago
How many gallons of water can fill a pool that is 50 yards by 20 yards and is 9 feet deep? (Assume 7 1/2 gallons per cubic foot.
serg [7]

it would take 10,800 gallons to fill the pool


8 0
3 years ago
Read 2 more answers
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