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cluponka [151]
3 years ago
5

Can I combine “2x” and “-4x” because they both have x or can I not because ones positive and ones negative?

Mathematics
2 answers:
Vikki [24]3 years ago
7 0

Answer:

You can combine 2x and -4x even though one is negative. Just subtract 4 from 2 to get -2x. :)

Step-by-step explanation:

Harlamova29_29 [7]3 years ago
6 0

Answer:

You can because you would be combining like terms.

Step-by-step explanation:

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Paulo wants to earn $2115by mowing lawns how will charge $70 for each law. He mows what is the minimum number of lawns that Paul
Ket [755]

Answer:

Paulo will need to mow at least 31 lawns to reach his goal of $2115.00.

Step-by-step explanation:

1. This is an inequality problem. The solution for this problem will involve creating in inequality to solve for the answer. To create an inequality, it is important to keep your information organized concisely.

Total = $2115.00

Lawn = $70.00

x = Amount of Lawns

2. From this information, the inequality can be formed.

70x \geq 2115

3. Using the order of operations, solve the inequality.

x \geq 2215/70

x \geq 30.21

4. The minimum number of lawns Paulo needs to mow is 31 lawns to meet his goal of $2115.00.

3 0
4 years ago
Scientists want to estimate the mean weight gain of mice after they have been fed a special diet. From previous studies, it is k
USPshnik [31]

Answer:

One example is the equation:

2x + 6 = 4x/2 + 12/2

To solve this, we need to transpose like terms to the same side.

2x - 4x/2 = 12/2 - 6

2x - 2x = 6 - 6

0 = 0

Since both sides are zero, it means that the equation has infinite number of solutions.

Step-by-step explanation:

8 0
3 years ago
Please help me and thanks
vichka [17]

Answer:

x=34

Step-by-step explanation:

90-22=68

68÷2=34

8 0
3 years ago
Read 2 more answers
A circle has a diameter of 8 cm. An angle in the center of the circle creates an arc AB. That angle's measure is pi/4 rad. What
zhenek [66]

Answer:

3.14 cm

Step-by-step explanation:

From the question,

Applying

s = πdФ/360................... Equation 1

Where s = length of arc AB, d = diameter of the circle, Ф = angle at the center of the circle, π = pie

From the question,

Given: d = 8 cm, Ф = π/4 rad = 45°

Constant: π = 22/7

Substitute these values into equation 1

s = (22/7)(8)(45)/360

s = 3.14 cm.

Hence the lenght of arc AB = 3.14 cm

8 0
3 years ago
A group of rectangular prisms is shown.
scoray [572]

Answer:

D, E and F

calculating the volume of regular bodies like prims works by multiplication alone.

you need some addition for surface area and for more complicated bodies that when the volume can't be calculated in one step

8 0
3 years ago
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