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spin [16.1K]
3 years ago
7

Plzzzzzzzzzzz help im dumb

Mathematics
1 answer:
bearhunter [10]3 years ago
6 0

Answer:

C I did the test sorry if im wrong

Step-by-step explanation:

<3 Goodluck

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Maya added 5 grams of salt into 20 grams of 50% salt solution. She made ___ grams of ___% salt solution.
AlladinOne [14]
Consider the suggested option:
1) if in 20 gr. of 50% solution given, then pure salt in this mix is 0.5*20=10 gr., and pure water is 0.5*20=10 gr.
2) after Maya added 5 gr. pure salt is 10+5=15 gr. Total mass of mix is 15(pure salt)+10(pure water)=25 gr.
3) new solution is 15/25=0.6 or 60%.
Answer: 25 gr. of 60% salt solution.
7 0
3 years ago
15 boys are needed to build a wall in 40 days how many boys are required to build the wall in 30 days​
bagirrra123 [75]

Step-by-step explanation:

40 days = 15 boys

1 day = 15/40 = 3/8

therefore,

30 days = 3/8 × 30

= 11.1/4 boys or 11.25boys

5 0
2 years ago
PLEASE HELP ME ITS AREA OF COMPOUND SHAPES ILL MARK U A BRAINIST PERSON IF YOUR RIGHT PLEASE HELP
ddd [48]

Answer:

32 in^2.

Step-by-step explanation:

Area = area of the triangle + area of rectangle

        = 1/2 * 4 * 6 + 4 * 5

        =  12 + 20.

7 0
3 years ago
A jury pool consists of 27 people. How many different ways can 11 people be chosen to serve on a jury and one additional person
hichkok12 [17]

Answer:

208,606,320

Step-by-step explanation:

A jury pool consists of 27 people. 11 people be chosen to serve on a jury and one additional person be chosen to serve as the jury foreman

Total of 27 people. 11 people can be selected from 27 people in 27C11 ways

27C11= \frac{27!}{11!(27-11)!} =13037895

one additional person be chosen to serve as the jury foreman

after selecting 11 people , remaining  is 27 - 11= 16 people

Now 1 is selected from 16 in 16 ways

Number of different ways = 13037895 \cdot 16=208606320

4 0
3 years ago
Does anyone know the answer, answer ASAP please!!
Natalka [10]

Answer:

A = 39 m²

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

Step-by-step explanation:

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

Shorter Diagonal d2 = 3m + 3m = 6m

Longer Diagonal d1 = 9m + 4m = 13m

<u>Step 2: Find Area</u>

  1. Substitute into formula:                    A = 1/2(13m)(6m)
  2. Multiplication:                                    A = 1/2(78m²)
  3. Multiplication:                                    A = 39 m²
6 0
3 years ago
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