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Shkiper50 [21]
3 years ago
7

2. Estimate the sum. Choose the mixed number that is closest to the estimate. 5.5 + 4.2

Mathematics
1 answer:
White raven [17]3 years ago
3 0

Answer:

9 9/10

Step-by-step explanation:

10

55/10 +42/10=97/10=9 7/10

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Simplify: i) (a + b)(5a – 3b) + (a – 3b)(a – b) ii) (a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab) iii) (b2 – 49) (b + 7) + 343
marin [14]

Answer:

plz mark brainliest✌️✌️

8 0
2 years ago
A ladder leans against a 22-feet-tall apple tree. The base of the ladder forms a 42° angle with the ground. Approximately how ta
igomit [66]

(D) 33 feet

<u>Explanation:</u>

Given:

Height of the tree, h = 22 feet

angle, θ = 42°

Length of the ladder, l = ?

We know:

sin θ = Perpendicular / hypotenuse

So,

Sin θ = height of the tree / length of the ladder

sin 42^0 = \frac{22}{l} \\\\0.67 = \frac{22}{l} \\\\l = 32.84 feet

l = 32.84 feet ≈ 33 feet

Therefore, the length of the ladder be to reach the top of the apple tree is 33 feet.

6 0
3 years ago
How much money should be invested in an account that earns 3% interest, compounded monthly, n=12, in order to have $14,000 in 4
melisa1 [442]

Answer:

D ko alam HAHAHAHA bahala kang bobo ka HAHAHAHAHAHAHA

Step-by-step explanation:

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5 0
2 years ago
What is a decimal equivalent for 2/5 and 40/100
Simora [160]

Answer:

For 2/5=0.4 For 40/100 is also 0.4

Step-by-step explanation:

7 0
3 years ago
The heights of young women follow a Normal distribution with a mean u = 64.5 inches and standard deviation o = 2.5 inches. The p
mash [69]

Answer:

The heights of young women follow a Normal distribution with a mean u = 64.5 inches and standard deviation o = 2.5 inches. The probability that the mean height of an SRS of 10 young women exceeds 66.5 inches is _

normalcdf(66.5, 99999999, 64.5, 2.5)

1 - normalcdf(66.5, 99999999, 64.5, 0.7906)

normalcdf(-99999999, 66.5, 64.5, 2.5)

normalcdf(66.5, 99999999, 64.5, 0.7906)

normalcdf(66.5, 99999999, 0, 1)

1 - normalcdf(66.5, 99999999, 64.5, 2.5)

1 - normalcdf(66.5, 99999999, 0, 1)

normalcdf(--99999999, 66.5, 64.5, 0.7906)

plz need help number 1 2 3 4 5 are pic

8 0
2 years ago
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