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muminat
3 years ago
6

Which expression is equivalent to -3 -3x -1 + x

Mathematics
2 answers:
DiKsa [7]3 years ago
4 0

Answer:

-2x-4

Step-by-step explanation:

all you need to do is simplify the expression.

goldfiish [28.3K]3 years ago
3 0

Answer:

x =  - 2

Step-by-step explanation:

-3 -3x -1 + x = 0 \\  - 3x + x - 3 - 1 = 0 \\  - 2x - 4 = 0  \\  \\  - 2x = 4  \\   \\ x =  -  \frac{4}{2}  \\  \\ x =  - 2

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A quadrilateral has three angles measuring 60 º , 45 º, and 100 º . What is the measure of the fourth angle?
morpeh [17]

Answer:

155°

Step-by-step explanation:

The sum four angles is 360° so:

60°+45°+100°+x=360°

x = 360°-100°-45°-60°=155°

3 0
3 years ago
What is the slope of the line that passes through the points (-4,9) and (-8,3)? Group of answer choices 3/2 -2/3 -1/2
nataly862011 [7]

Answer:

3/2

Step-by-step explanation:

3-9/-8-(-4). -6/-4. turn into positive due to the two negatives and becomes 3/2

8 0
2 years ago
A school is organising a competition. There are 128 students from the Maths specialist class and 80 students from the English sp
Elden [556K]

Answer:

5 english students in each team

Step-by-step explanation:

So there are multiple ways to do this, you could do trial and error or you could factor out common numbers between the two.

Through trial and error, the lowest possible number of groups that could be divided between the number of students whilst still being able to maintain a whole # was 16 groups

  • 128 math students ÷16 groups = 8 math students/group
  • 80 english students ÷ 16 groups = 5 english students/group

The other way to solve this is to factor out common numbers between the two:

3 0
2 years ago
Red and grey bricks were used to build a decorative wall. The number of red bricks and grey bricks was 5/2. There were 140 brick
ozzi

Answer:

100 red bricks

Step-by-step explanation:

Let's say red bricks is equal to 5x

Gray bricks is equal to 2x

We have an equation

2x + 5x = 140

= 7x = 140

Divide through by 7 to get the value of x

X = 140/7

X = 20

Red bricks = 5(x)

= 5(20)

= 100

Gray bricks = 2(x)

= 2(20)

= 40

Therefore in conclusion the number of red bricks is 100.

5 0
2 years ago
Use exponents to write the numbers 81 and 64 in as many different ways as you can. Then write 64/81 using exponents in as many d
Vlad1618 [11]

Answer:

c

Step-by-step explanation:

edge 2021

3 0
3 years ago
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