3 years ago

Help me pleaseee ❤️❤️

Mathematics

2 answers:

VladimirAG [237]3 years ago

8 0

Answer: 315.95

Step-by-step explanation: 3.55 x 89 = 315.95

oksian1 [2.3K]3 years ago

3 0

The answer should be 315.95

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Write the following numbers in expanded notarion: a. 100 005. b. 84 016. c. 9 078. d. 113. e. 75.

shusha [124]

Answer:

Step-by-step explanation:

a. 100005

1 x 1000000 + 0 x 100,000 + 0 x 10000 + 0 x 1000 + 0 x 100 + 0 x 10 + 5 x1

1 x 10^6 + 0 x 10^5 + 0 x 10^4 + 0 x 10^3 + 0 x 10^2 + 0 x 10^1 + 5 x 1

= 100,000 + 0 + 0 +0 +0 + 5

b. 84016

8 x 10000 + 4 x 1000 + 0 x 100 + 1 x 10 + 6 x 1

80000 + 4000 + 0 + 10 + 6

c. 9078

9 x 1000 + 0 x 100 + 7 x 10 + 8 x 1

9000 + 0 +7 + 8

d. 113

1 x 100 + 1 x 10 + 3 x 1

100 + 10 + 3

e. 75

7 x 10 + 5 x 1

70 + 5

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2 years ago

What number must you add to complete the square <br> x^2-20x=17

crimeas [40]

$(*)\ (a-b)^2=a^2-2ab+b^2$

$x^2-20x=17\\\\x^2-2\cdot x\cdot10=17\ \ \ |+10^2\\\\\underbrace{x^2-2\cdot x\cdot10+10^2}_{(*)}=17+10^2\\\\(x-10)^2=117$

Answer: 10² = 100

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3 years ago

Melanie paid $42.50 for 3 adult tickets and 2 student tickets at Theater A. Drew paid $47 for 4 student tickets and 2 adult tick

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Answer:

Step-by-step explanation:

¿A qué se llamó feudalismo? ¿Dónde y cuándo se desarrolló?

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3 years ago

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Which operations is the following set closed under: {... , -3, -1, 1, 3, ...}?

Ganezh [65]

Not addition, since $-1+1=0$ and 0 doesn't belong to the set.

Not subtraction, since $1-1=0$ .

It is closed under multiplication. The set appears to contain all non-zero multiples of 3.

Not division, since dividing some of the numbers results in rationals which do not belong to the set.

What other operations are you supposed to consider?

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3 years ago

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36,940 in scientific notation

Ksju [112]

3.694 * 10^4

Hope this helps

8 0

2 years ago