All categories

2 years ago

For each equation, decide if it is always true or never true. I WILL GIVE BRAINLESS AND 20 POINTS!

Mathematics

2 answers:

givi [52]2 years ago

6 0

A.No solution
B.no solution
C. True for all x
D. True for all x
E. X = 7

Whitepunk [10]2 years ago

3 0

A. x -13= x+1 (NO SOLUTION)

B. x + 1/2= x - 1/2 (NO SOLUTION)

C. 2(x + 3)=5x + 6 - 3x (TRUE)

D. x - 3 = 2x - 3 - x (TRUE)

E. 3(x - 5) = 2( x - 5) + 2 (TRUE)

I'm no sure what Im supposed to be doing-

But if I'm supposed to determine if true well there you have it

You might be interested in

What’s the correct answer for this?

kondor19780726 [428]

A(-3,5) to B(8,1)

That makes a right triangle 8 - -3 = 11 in the x direction, 5 - 1 = 4 in the y direction.

d² = (8 - -3)² + (1 - 5)² = 11² + (-4)² = 121 + 25 = 146

d = √146 = 12.083045973594572

Answer: 12.1

4 0

2 years ago

The volume of a right circular cone is 2,279.64 in cubed. If the height of the cone is 18 in, what is the diameter of the cone?

Aleksandr [31]

ANSWER

A. 22 in

EXPLANATION

The volume of a cone is calculated using the formula:

$Volume = \frac{1}{3} \times \pi {r}^{2} h$

It was given that: the volume is 2,279.64 in³

The height of the cylinder is also given as: h=18 in.

We substitute, the given values into the formula to get:

$2279.64= \frac{1}{3} \times (3.14) \times {r}^{2} \times 18$

$2279.64= 18.84 {r}^{2}$

${r}^{2} = \frac{2279.64}{18.84}$

${r}^{2} = 121$

We take positive square root to get;

$r = \sqrt{121}$

$r = 11in$

Therefore the diameter is 2(11) which is equal to 22 inches.

5 0

2 years ago

15. A cylindrical glass 10 cm tall and 8 cm in diameter is filled to 1 cm

ANTONII [103]

Answer:

No. The new height of the water is less than the height of the glass(6.33 cm<10 cm)

Step-by-step explanation:

-For the water in the glass to overflow, the volume of the inserted solid must be greater than the volume of the empty space or the ensuing height of water >height of glass.

#Volume of the golf ball:

$V=\frac{4}{3}\pi r^3\\\\=\frac{4}{3}\pi \times 4^3\\\\\approx 268.08\ cm^3$

#The volume of the water in the glass:

$V=\pi r^2 h\\\\=\pi \times 4^2\times 10\\\\\approx 50.27\ cm^2$

We then equate the two volumes to the glass' volume to determine the new height of the water:

$V=\pi r^2h\\\\(206.08+50.27)=\pi r^2 h\\\\h=318.35/(\pi \times 4^2)\\\\=6.33\ cm$

Hence, the glass will not overflow since the new height of the water is less than the height of the glass(6.33 cm<10cm).

4 0

2 years ago

Solve the following inequality.

melisa1 [442]

Answer:

A number line going from 27 to 37, open circle at 32, everything to the right is shaded

Step-by-step explanation:

-1/2p < -16

multiply each side by -2 (don't forget to switch inequality symbol)

p > 32

8 0

2 years ago

Read 2 more answers

Mr. Kent buys a car and pays by installments. Each installment is $827. If he still has to pay $325 after 72 installments, how m

jeka94

Answer:

$59,869

Step-by-step explanation:

3 0

2 years ago