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Romashka-Z-Leto [24]
3 years ago
13

Someone please help

Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

Correct Work

4x+8 +3(x-4)

4x +8 + 3x-12

4x+3x+8 -12

7x -4

Mistake Made

  1. 3 wasn't multiplied by the 4 in the bracket
  2. Like terms wasn't combined in the working out
  3. The answer was supposed to be -4, 8-4= -4
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Help ima mark BRAINLIST
maw [93]

Answer:

40%

Step-by-step explanation:

There are 5 seniors (2+3)

2 of them are males

P ( male given a senior)= male/ senior

                                       2/5

                                     .40

                                      40%

3 0
3 years ago
Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7
Tema [17]
Hello,

y²+4y+4=7
==>(y+2)²-7=0
==>(y+2-√7)(y+2+√7)=0
==>y=-2+√7 or y=-2-√7
6 0
3 years ago
Read 2 more answers
Use the coordinate grid to determine the coordinates of point A:
Simora [160]

Based on the given coordinate grid, and the increment for each grid line, the coordinates of point A is ( fraction negative 1 and 1 over 4, fraction 3 over 4) or (-1¹/₄, ³/₄).

<h3>What are point A's coordinates?</h3>

The x-value of point A is said to be 5 grid lines to the left of y-axis. This means that the x value will be negative.

The increments are 1/4 so the x-value is:
= -1/4 x 5

= -1¹/₄

The y-value is given by the 3 grid lines above the x-axis which means that this value is positive:

= 1/4 x 3

= 3 /4

The coordinates of A are:

(-1¹/₄, ³/₄)

Find out more on coordinates at brainly.com/question/14355852

#SPJ1

4 0
1 year ago
Los nutriólogos recomiendan que una persona debe tomar en promedio 2.5 litros de agua en un día, para que esté bien hidratada. ¿
Goshia [24]

the question in English

Nutritionists recommend that a person should drink an average of 2.5 liters of water in a day, to be well hydrated. How many liters of water should a person drink in a month to comply with a good hydration (Consider a month equal to 30 days) Formulate an algebraic expression to determine the total liters of water that a person should drink a given number of days.

Let

x-------> the number of days

y------> the total liters of water

we know that

y=2.5x  ------> algebraic expression to determine the total liters of water that a person should drink a given number of days

For x=30 days (1 month)

substitute in the formula

y=2.5*30=75\ liters

therefore

<u>the answer is</u>

75\ liters


7 0
3 years ago
What two measurement could make up a complementary angle when one angle is 8 degrees more than the other?
Firdavs [7]
Complimentary angles add up to 90 degrees

x + y = 90
x = y + 8

y + 8 + y = 90
2y + 8 = 90
2y = 90 - 8
2y = 82
y = 82/2
y = 41

x = y + 8
x = 41 + 8
x = 49

so ur angles are : 41 and 49
7 0
3 years ago
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