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Mandarinka [93]

3 years ago

11

Mrs. Brown bought a package of 50 pencils for her class. She is giving each 2 pencils and keeping the remaining pencils for hers

elf. If she has 23 students in her class, how many pencils will mrs. Brown have for herself

1 answer:

Allushta [10]3 years ago

3 0

Answer:

she has 4 pencils for herself

Step-by-step explanation:

if each student gets 2 than 23x2=46 so 50-46=4

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Multiply the following expressions<br> 81x5y6 × (-1x2y)

Gnom [1K]

Answer: -4860y^2

Solution:
81 x (5y x 6) x (-2y)
-81 x 5y x 6 x 2y
= -4860y^2

5 0

2 years ago

Perform the indicated operation. Be sure the answer is reduced.<br><br> d+3/8d -2d+1/10d^2

mars1129 [50]

Answer:

$\frac{d(4d-25)}{40}$

Step-by-step explanation:

Given: $d+\frac{3}{8}d-2d+\frac{1}{10}d^2$

To find: the value of given expression in reduced form

Solution:

$d+\frac{3}{8}d-2d+\frac{1}{10}d^2=\frac{d}{1}+\frac{3}{8}d-\frac{2d}{1}+\frac{1}{10}d^2$

Here, $L.C.M(1,8,1,10)=40$

( L.C.M of two or more numbers is the smallest positive number that is their multiple )

So,

$d+\frac{3}{8}d-2d+\frac{1}{10}d^2=\frac{d}{1}+\frac{3}{8}d-\frac{2d}{1}+\frac{1}{10}d^2\\=\frac{40d+15d-80d+4d^2}{40}\\=\frac{\left ( 40d+15d-80d \right )+4d^2}{40}\\=\frac{\left ( -25d \right )+4d^2}{40}\\=\frac{4d^2-25d}{40}\\=\frac{d(4d-25)}{40}$

3 0

3 years ago

Simply the expression by combining like terms.<br> 9x+8+3x+4=

gayaneshka [121]

Answer:

12(x + 1)

Step-by-step explanation:

9x + 8 + 3x +4

9x + 3x + 8 + 4

12x + 12

12(x + 1)

3 0

2 years ago

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The Colosseum in Rome, Italy, is about 1,950 years old. The Giza Pyramids in Cairo, Egypt, are about 2,550 years older. How old

andrezito [222]

Answer: 2550

Step-by-step explanation:

it literally says it in the question

3 0

2 years ago

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Two spherical balloons are filled with water. The first balloon has a radius of 3 cm, and the second has a radius of 6 cm.

lana [24]

<span>Sphere Volume = </span><span> 4/3 • <span>π <span>• r³<span>

Small Balloon = </span></span></span></span><span>4/3 • 3.14<span> <span>• 3^3

</span></span></span><span>Small Balloon = 37.68 cc

Large Balloon = </span><span>4/3 • 3.14<span> • 6^3</span></span>

Large Balloon = <span> <span> <span> 904.32 </span> </span> </span> cc

<span> <span> <span> <span> Difference = (904.32 -</span></span></span>37.68) = </span> <span> <span> <span> 866.64 </span> </span> </span> cc

The larger balloon has <span> <span> <span> 866.64 </span> </span> </span> cc more water than the small balloon.

4 0

3 years ago