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Otrada [13]
3 years ago
8

Holly's fitness tracker shows how many

Mathematics
1 answer:
Dafna11 [192]3 years ago
5 0
Holly would have to climb 92 flights of stairs in the fifth week
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Write an expression for the model. Find the sum. options: a) 2 + (–3); 1 b) –3 + 2; 5 c) 2 + 3; 5 d) 2 + (–3); –1
Dima020 [189]

Answer:

c) 2 + 3 = 5                   TRUE

d) 2 + (–3) = -1              True

Step-by-step explanation:

When adding integers (positive and negative whole numbers), there are three cases:

  • Positive and positive increases and sum is positive. Ex. 4 + 6 = 10
  • Positive and negative where you subtract and take the sign of the larger number. Ex. 3 + -8 = -5 or -3 + 8 = 5
  • Negative and negative decrease and the sum if negative. Ex. -4 + -6 = -10.

Use these rules to simplify each expression.

a) 2 + (–3) = -1 not 1     FALSE

b) –3 + 2 = -1 not 5      FALSE

c) 2 + 3 = 5                   TRUE

d) 2 + (–3) = -1              True

5 0
3 years ago
Find the measure of
sergij07 [2.7K]

Answer:

∠ ABC ≈ 137.9°

Step-by-step explanation:

Using the Cosine rule in Δ ABC

cos B = \frac{a^2+c^2-b^2}{2ac}

with a = 89, b = 144, c = 65

cos B = \frac{89^2+65^2-144^2}{2(89)(65)} = \frac{7921+4225-20736}{11570} = \frac{-8590}{11570} , thus

B = cos^{-1} ( - \frac{8590}{11570} ) ≈ 137.9° ( to the nearest tenth )

4 0
3 years ago
How many 8 person juries can be formed from 21 possible candidates
Gwar [14]
8 times 3 is 21 so 3 juries
7 0
3 years ago
(x-3)^2 = 16 solve for x
nordsb [41]

Answer:

it is 168

Step-by-step explanation:

3 0
3 years ago
Pharmacist used 826 milliliters of a liquid for an experiment. How many liters of the liquid did the scientist use for this expe
liberstina [14]
Answer: 0.826 litres
1 litre= 1000 millilitres
7 0
2 years ago
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