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Travka [436]
2 years ago
15

The sum of twice a number and 4 is at least 16 inequality=

Mathematics
2 answers:
boyakko [2]2 years ago
8 0

Answer:

x>5andx≤9

Thais is the answer

Firlakuza [10]2 years ago
8 0

Step-by-step explanation:

sum of twice is 4

4^2 = 16 .... in equal least 16

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Three consecutive integers have a sum of 87. Find the integers.
elena-s [515]

Answer:

28, 29, and 30

Step-by-step explanation:

There's probably better ways but you can estimate by knowing 30*3=90 so it should be somewhere pretty close to 30. Guess and check with basic calculations to get 28, 29, and 30.

4 0
2 years ago
Find the area and perimeter
Ivenika [448]

Answer: area = 379.7 mm²

Perimeter = 95.84 mm

Step-by-step explanation:

The composite shape contains a semi circle and a trapezoid.

The area of a semi circle is

1/2 × πr²

Radius = diameter/2

Radius = 20/2 = 10 mm

Area = 1/2 × 3.14 × 10 = 15.7 mm²

Area of trapezoid is expressed as

1/2(a + b)h

Area = 1/2 × (20 + 32)14

Area = 1/2 × 52 × 14) = 364mm²

Area of the composite shape is

15.7 + 364 = 379.7 mm²

Formula for determining the perimeter of the semicircle is

1/2 × πd

Perimeter = 1/2 × 3.14 × 20 = 31.4mm

Looking at the attached photo, we would determine the slant height,h, by applying Pythagorean theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side²

h² = 12² + 14² = 340

h = √340/= 18.44

Perimeter of the composite shape is

31.4 + 14 + 32 + 18.44 =95.84 mm

7 0
3 years ago
Which is the value of 10 x 5(2/5)x 4(1/3)?
Molodets [167]

Answer:

26 2/3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
1/5 of a class of children signed up for a mathematics competition. There were 10 boys and 30 girls who did not sign up. How man
Veronika [31]
10+30=40(total number of students in the class)
take this number and divide by 5

40/5=8 (students)

ANSWER: 8 students signed up for the competition
3 0
3 years ago
Read 2 more answers
Please help me with this i’m lost
Lana71 [14]

Answer:

2 is fuction

3 fuction

4 is not a fuction

5 not a fuction

6 is fuction

7 fuction

8 not a fuction

9 fuction

10 fuction

Step-by-step explanation:

the x's should not be repeated

4 0
2 years ago
Read 2 more answers
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