All categories

3 years ago

Please help me

Mathematics

2 answers:

elena55 [62]3 years ago

6 0

Answer:

The equation would be:

3x + 2 = 7*2

Step 1. Subtract 2 from both sides:

3x = 6*2

Step 2. Divide both sides by 3:

3x/3 = 6*2/3
x = 2*2

A single box weights x= 4 units.

kap26 [50]3 years ago

4 0

a) Solution:

The equation that is represented by the diagram below will be,

→ 3x + 2 = 7 × 2

b) Solution:

The steps that can be taken are,

→ 3x + 2 = 7 × 2

→ 3x = 14 - 2

→ 3x = 12

→ x = 12/3

→ [x = 4]

c) Solution:

A single box weighs 4 units (kg), because the required value of x is 4.

You might be interested in

Solve the equation kx+9=7 for x

Alika [10]

Answer:

x=-2/k

Step-by-step explanation:

To solve you need to make x on one side while the other variables or numbers on the other.

First, you need to move the 9 to the other side by subtracting 9 from both sides: kx+9-9=7-9

Simplify: kx=-2

Now you need to divide by k into both sides in order to eliminate the k on kx:

x=-2/k

Answer: x=-2/k

Hope this helps!

3 0

3 years ago

Read 2 more answers

June has 30 days. A family of 3 used 3,960 gallons of water during the month of June. How many gallons of water did each person

lys-0071 [83]

Answer:

44 gallons

Step-by-step explanation:

3960/3=1320

Each person used 1320 in one month

1320/30=44

Amount of person used / 30 days = gallons used each day

6 0

3 years ago

Consider this sphere inside the cylinder. Which statements are true? Check all that apply. NEED HELP ASAP

-Dominant- [34]

Option A: The height of the cylinder is equal to the diameter of the sphere.

Option C: The radius of the sphere is half the height of the cylinder.

Option E: The volume of the sphere is two-thirds the volume of the cylinder.

Solution:

The sphere is inside the cylinder.

Let r be the radius of the sphere.

Option A: The height of the cylinder is equal to the diameter of the sphere.

The sphere is fully occupied the cylinder.

If we draw the vertical line through enter of the sphere, which is equal to the height of cylinder.That is h = d. It is true.

Option B: The height of the cylinder is two times the diameter of the sphere.

That is h = 2d. From the above option, we know that h = d.

So, it is not true.

Option C: The radius of the sphere is half the height of the cylinder.

we know that diameter = 2 × radius (d = 2r)

From option A, we have h = d.

Substitute d = 2r, we get

⇒ h = 2r

Divide by 2 on both sides, we get

$$\Rightarrow \frac{h}{2}=r$

Therefore, it is true.

Option D: The diameter of the sphere is equal to the radius of the cylinder.

It is not true, because diameters of both cylinder and sphere are equal.

Option E: The volume of the sphere is two-thirds the volume of the cylinder.

Radius of cylinder and sphere = r

Height of cylinder h = 2r (by option C)

Volume of cylinder = Volume of sphere

$$\Rightarrow \pi r^2 h = \frac{4}{3} \pi r^3$ (formula)

$$\Rightarrow \pi r^2 (2r) = \frac{2\times2}{3} \pi r^3$

$$\Rightarrow 2 \pi r^3= \frac{2}{3} \times 2\pi r^3$

Hence it is true.

Option A, option C and option E are true.

6 0

3 years ago

Read 2 more answers

The wholesale price for a pillow is $3.50 . A certain department store marks up the wholesale price by 60%. Find the price of th

4vir4ik [10]

Answer:

5.60

Step-by-step explanation:

3.50 + 60 % (2.10)= 5.60

7 0

3 years ago

which of these which of these is most likely to to describe the change received from a cash purchase? A.whole number B.negative

poizon [28]

Rational number: Whole number isn't likely, negative integer isn't change, rational number is most likely, irrational number is not possible for cash change.

7 0

3 years ago