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erastova [34]
3 years ago
13

Evaluate 13+ab,when a= 2.5 and b=3.

Mathematics
2 answers:
weeeeeb [17]3 years ago
7 0
Eleventeen cus it is
Doss [256]3 years ago
6 0

Answer:

the answer is 20.5 (B)

Step-by-step explanation:

13+2.5*3

<em>=20.5</em>

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12:)

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2 years ago
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True or false To find 7% of a number, multiply the number by 0.7
Delicious77 [7]

Answer:

true and it also depends on what question it is

Step-by-step explanation:

because 7% = 0.07 when doing a mathematical question it will help you a lot if you turn 7% into a decimal 0.07 and it will be more easier than doing it as a percentage.

7 0
3 years ago
Does anyone know the answer?
azamat

Answer:

1=163 degrees

2=×=10 degrees

3=×=3

Step-by-step explanation:

54x+1+9x-10=180 we are using this expression because alternate angles add up to 180 degrees

54x+9x+1-10=180

63x-9=180

63×=180+9

63×=189

63×÷63×=189÷63×

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Angle in bold print is (54x+1)

54×3=162

162+1=163 degrees

No.2 Find x

7x+35+x+65 =180

7x+x+35×65=180

8x+100=180

8x=180-100

8x=80

8x÷8x=80÷8

X=10 degrees

No.3 Find x

54x+1+9x-10=180

54x+9x+1-10=180

63x-9=180

63x=180+9

63x=189

63x÷63x=189÷63

X=3

I hope I was of help

6 0
3 years ago
The cable supporting a ski lift rises 2 feet for each 5 feet of horizontal length. The top of the cable is fastened 1320 feet ab
ollegr [7]
The resulting triangle is a right triangle with the third side given:
First, the angle can be solved using the given rise and run of the cable. So,
tan θ = 2 / 5
θ = 15.95°

Next, the lengths b and c can be solved using the solved angle:
tan 15.95 = 1320 / b
b = 3300 ft

The hypotenuse or c can be solved by trigonometric functions or using Pythagorean theorem, using the sine function:
sin 15.95 = 1320 / c
c = 4804 ft
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3 years ago
Write the system of inequalities.
Leona [35]

Answer:

there is 175 adults and 125 children

Step-by-step explanation:

8 0
3 years ago
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