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sweet [91]
3 years ago
12

1) In a class of 30 children, 60% of the

Mathematics
2 answers:
Irina-Kira [14]3 years ago
5 0
There are 18 girls in that class
Tpy6a [65]3 years ago
4 0

Answer:

18 students in the class are girls

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What is the solution for 15= -x +10
Alja [10]

Answer:

-5

Step-by-step explanation:

15=-x+10

x-10=-15

x=-15+10

x=-5

6 0
3 years ago
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During a period of extreme cold, the average daily temperature dropped decreased by 1. Feach day. How many days did it take for
PtichkaEL [24]

Answer:

The answer is 9 days

Step-by-step explanation:

First, we realise

-1.F = 1 day

-9.F = 9 days

The -1.F times 9 gives us one so the days times 9 as well.

Answer = 9

4 0
3 years ago
Решите уравнение
mafiozo [28]

Answer:

a)-6(x-2) = 4r-17

B) 10x +307 - 20) = 13-20

6) (18-19) -(4-720) = -73

г)-3(4-5y)+2(3-6y)=-39

3 0
3 years ago
After 8 points are added to each score in a sample.
mina [271]
I think it’s 32 because it’s more simple then it looks! It would just be 40-8??
4 0
2 years ago
Please help, would be greatful :)
lana [24]

Answer:

x ≈ 22.0°

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Angle θ = <em>x°</em>

Opposite Leg = 3

Hypotenuse = 8

<u>Step 2: Find </u><em><u>x°</u></em>

  1. Substitute [Sine]:                    sinx° = 3/8
  2. Inverse trig:                             x° = sin⁻¹(3/8)
  3. Evaluate:                                 x = 22.0243°
  4. Round:                                     x ≈ 22.0°
5 0
3 years ago
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