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dem82 [27]
2 years ago
5

Use mental math to find the sum. 80+40+170

Mathematics
2 answers:
ICE Princess25 [194]2 years ago
8 0

Answer:

290

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

MissTica2 years ago
6 0

Answer:

290

Step-by-step explanation:

80+40=120

120+170=290

290

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Help please I will give brainliest ❤​
Maslowich

Step-by-step explanation:

a < (a + b)/2 < b

Solve the first inequality.

a < (a + b)/2

2a < a + b

a < b

Solve the second inequality.

(a + b)/2 < b

a + b < 2b

a < b

Both inequalities are true.  Therefore, a < (a + b)/2 < b.

6 0
3 years ago
Read 2 more answers
The hypotenuse of a right triangle is 4 feet
zaharov [31]

Answer:

514 feet

Step-by-step explanation:

Just simply use the pythagorean thereom:

a^2 +b^2 = c^2

put in the values of a, b, and c with the side lengths of the triangle:

x feet, 64 feet, and x+4 feet

x^2 +64^2 = (x+4)^2 , thus x =510

the hypotenuse = x+4 feet = 510 + 4 = 514

ANSWER: 514 feet

3 0
3 years ago
What is the price of a $500 tv after a 20% discount?
Hunter-Best [27]
It’s going to be 400 dollars, 20percent is 100 dollars
8 0
2 years ago
Find the distance between -0.5 and 1.5​
stepladder [879]

Answer:

  2.0

Step-by-step explanation:

Subtract the smaller number from the larger to find their difference:

  1.5 -(-0.5) = 2.0

The distance between the given values is 2.0.

5 0
2 years ago
If angle 1 and angle 2 are vertical. If the measure angle 1= 6x+11 and the measure angle 2= 10x-9, find the measure angle 1
Paraphin [41]

Hey there!!

We know:- <em>Vertically opposite angles are equal. </em>

Hence,

Angle 1 = Angle 2

... 6x + 11 = 10x - 9

... 20 + 6x = 10x

... 20 = 4x

... x = 20 / 4

... x = 5

Angle 1 = 6x + 11

... 6 ( 5 ) + 11

... 30 + 11

... 41

<em>Hence, the measure of angle 1 is 41 degrees. </em>

Hope my answer helps!

4 0
3 years ago
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