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4 years ago

Someone anyone help me please

Mathematics

1 answer:

tatyana61 [14]4 years ago

7 0

This is fairly easy once you have the formula, the formula for the volume of a sphere is

$\frac{4}{3} \times \pi \times {r}^{3}$

(or substitute PI with 3.14)

Here is your formula with the plugged in numbers

$\frac{4}{3} \times 3.14 \times {7}^{3}$

This all equals 1,436 cubic units

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Find the solution set for the given inequality. -7x + 3 > 45 A) Show your work to solve this inequality (B) Graph the solutio

scoundrel [369]

Answer:

See explanation

Step-by-step explanation:

Given the inequality $-7x+3>45$

A) Add -3 to both sides of inequality:

$-7x+3-3>45-3\\ \\-7x>42$

Divide by -7 (remember, dividing the inequality by negative number changes the sign of inequality):

$x$

B) Plot open circle at -6 on the number line and shade all values of x which go to the left from -6 (see attached diagram).

8 0

3 years ago

4688-3) -30X-5 CX-5)

pshichka [43]

Answer:

x = 13/3

Step-by-step explanation:

4(8x-3) - 30x = 5(x-5)

Distribute

32x - 12 - 30x = 5x -25

Combine like terms

2x -12 = 5x-25

Subtract 2x from each side

2x-12-2x = 5x-2x -25

-12 = 3x-25

Add 25 to each side

-12+25 = 3x-25+25

13 = 3x

Divide each side by 3

13/3 = x

4 0

4 years ago

Read 2 more answers

Right now Martha has $600 in her savings account she wants to purchase a used car she decides that it we should put $20 into acc

lapo4ka [179]

Multiply the amount she puts in the account every week by the number of weeks (w) and add that to what she already has saved:

20w + 600 >= 2000

6 0

4 years ago

Read 2 more answers

Triangle CAT is transformed to produce triangle DOG.

PilotLPTM [1.2K]

Using transformations and congruency concepts, it is found that with these following transformations, the triangles will be congruent.

A reflection, then a translation.
A rotation, then a reflection.

--------------------------

Two triangles are congruent if they have the same lengths of the sides and the same angles.

In a reflection, there is a rule that changes the coordinates (x,y), but does not change the lengths of the sides of the triangles, thus they will still be congruent.
A reflection is also a special case of rotation, thus, in a rotation, the triangles are also congruent.
A translation is also similar to a reflection, using rules to shift the triangle up, down, left or right according to it's coordinates, not changing the sides or angles, thus congruent.
In a dilation, the lengths of the sides are changed, thus, the triangles will not be congruent.

--------------------------

Thus, from the bullet points above, the correct options are:

A reflection, then a translation.
A rotation, then a reflection.

A similar problem is given at brainly.com/question/24267298

3 0

3 years ago

Which of the following numbers are less than nine over four

allochka39001 [22]

Answer:

option B and C

Step-by-step explanation:

option B and C

5 0

3 years ago