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3 years ago

Find each percent of change. Round answers to the nearest tenth of a percent is necessary. 76 is decreased to 55

1 answer:

7 0

76 -55= 21
76 is decreased by 21.

We initially start with 76, so now we have to divide 21 by 76:
21/76* 100%= 27.63%

Rounded to the nearest tenth, the final answer is 27.6%~

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Dr.Lamb is mixing a solution for his next patient. He has a cylindrical test tube which is 4 inches across on the inside. The de

SSSSS [86.1K]

Answer: There are 34.35 liters left in the test tube.

Step-by-step explanation:

Since we have given that

Depth of the tube = 9 inches

Circumference of base=4 inches

As we know the formula of circumference ,

$Circumference=2\pi r\\\\4=2\times \frac{22}{7}\times r\\\\4\times{7}{22\times 2}=r\\\\\frac{7}{11}=r$

Now, we need to find the volume of tube is given by

$\text{ Volume of test tube }=\pi r^2h\\\\\text{ Volume of test tube }=\frac{22}{7}\times \frac{7}{11}\times \frac{7}{11}\times 9\\\\\text{ Volume of test tube }=\frac{126}{11}=11.45\ inches^3$

Since we have also given that,

Of 1 cubic inch of space holds 3 liters of water,

So,

$1\text{ cubic inch}=3\text{ liters}\\\\11.45\text{ cubic inches}=3\times 11.45=34.35\text{ liters}$

Hence, there are 34.35 liters left in the test tube.

6 0

2 years ago

Explain how you can round 25.691 to the greatest place?

Molodets [167]

Hmmmm well I would first round the 1 and make it a 0 round the 9 and add to 6 and round 7 (was originally 6) to add 1 to 25 and then round 26 to 30

5 0

2 years ago

HELP ME PLS ASAP <br><br> a and b

morpeh [17]

Answer:

1. 5cm

2. 10cm

3. 20cm

4. 40 cm

Step-by-step explanation:

I think you need to double the area of the scaled factor.

6 0

2 years ago

(951² - 159²)÷(7539²-357²) x (258²-852²)

Marysya12 [62]

Answer:

(879,120)÷(56709072) ×(-659340)=-10221.274

Step-by-step explanation:

we use bedmas rules when it comes to long solving questions.

5 0

2 years ago

user100 [1]

Answer:

A. y = –5x – 27

Step-by-step explanation:

Find the slope of the original line and use the point-slope formula y − y 1 = m ( x − x 1 ) to find the line parallel to y = − 5 x + 3 .

y = − 5 x − 27 PARALLEL

...................................................................................................................................................

Find the negative reciprocal of the slope of the original line and use the point-slope formula y − y 1 = m ( x − x 1 ) to find the line perpendicular to y = − 5 x + 3 .

y = 1 /5 x + 21 /5 PERPENDICULAR

7 0

2 years ago