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Verdich [7]
3 years ago
15

What is -3.45 minus positive 2.2

Mathematics
2 answers:
Vanyuwa [196]3 years ago
4 0

Answer:

-5.65

Step-by-step explanation:

Monica [59]3 years ago
4 0
The answer is -5.65.
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Vivi is a drummer for a band. She burns 756 calories while drumming for 3hours. She burns the same number of calories per hour.
lions [1.4K]

This question uses the concept of the division.

Vivi, the band drummer, burns 765 calories in 3 hours. And she burns these calories at the same rate. Which means she burns the same amount of calories per hour.

Thus, the set up equation for this question will be:

Energy burnt in 3 hours=756 calories

Therefore, Energy burnt in 1 hour = \frac{756}{3} =252 Calories.

Thus, the required answer is that Vivi burns 252 Calories of energy per hour while drumming.

7 0
3 years ago
Use the expression 3n + 5p + 2 + n=??
dusya [7]
Terms: 3n, 5p, 2, n
Like Terms: 3n, n
Coefficients: 3, 5, 1
Constants: 2
Simplified Expression: 4n + 5p + 2
5 0
3 years ago
Which answer is correct
andre [41]

Hello from MrBillDoesMath!

Answer:

The first choice,  Pi + (-Pi) = 0

Discussion:

Pi is an irrational number. Saying the irrational numbers <u>are</u> closed under addition means if we add two irrational numbers we will get another irrational number. In our case, Pi + (-Pi) = 0, which is correct, BUT 0 is a <u>rational </u>number. This shows the set of irrational numbers is NOT closed under addition.

Thank you,

MrB

7 0
4 years ago
HELP!!!!!!!!! I DONT UNDERSTAND THIS
ValentinkaMS [17]

Answer:

x=86^{\circ}

y=94^{\circ}

z=54^{\circ}

Step-by-step explanation:

First, let's look at the largest triangle (two smaller triangles are combined) to solve for z. Since the sum of the angles in a triangle adds up to 180^{\circ}, we can write the equation:

20+74+32+z=180

z=180-126

z=54^{\circ}

Looking at the smaller triangle on the left, y (exterior angle) is the sum of the two opposite interior angles of the triangle on the left:

y=74+20

=94^{\circ}

Since x is the exterior angle of the triangle on the right, it is equivalent to the sum of the opposite interior angles of that triangle:

x=32+z

=32+54

=86^{\circ}

Hope this helps :)

6 0
3 years ago
Evaluate the expression 7+3²× 2​
disa [49]

Answer:

25

Step-by-step explanation:

6 0
3 years ago
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