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2 years ago

WILL MARK YOU IF YOU HELP ME PLEASE!!

Mathematics

2 answers:

Dmitry_Shevchenko [17]2 years ago

5 0

Answer:

Step-by-step explanation:

180-72-24

so the answers is 84

ss7ja [257]2 years ago

3 0

Answer:

Step-by-step explanation:

In all triangles, once the angles are added up the total will be 180° and so in this case first add then subtract.

72+24=96

180-96=84

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At a coffee shop, the lunch bill was $18.45, not including the tip. what was the total amount of the lunch, including a tip of $

lina2011 [118]

The answer would be 18.45 + 3 = 21.45

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3 years ago

In an examination given to a class of 20 students, the following test scores were obtained.

nexus9112 [7]

Answer:

Mean = 75

Median = 80

Mode = 85

The mode

Step-by-step explanation:

Given the data :

45 45 50 50 55 60 70 75 75 80 80 85 85 85 85 90 95 95 95 100

Rearranged data :

45, 45, 50, 50, 55, 60, 70, 75, 75, 80, 80, 85, 85, 85, 85, 90, 95, 95, 95, 100

The mean score :

ΣX / n ; n = sample size = 20

ΣX = 1500

Mean = 1500 / 20 = 75

Mode = most frequently occurring = 85 ( frequency of 4)

Median = 0.5(n + 1)th term

Median = 0.5(20 + 1)th term

Median = 0.5(21) th term

Median = 10.5th term = (10 + 11)th term / 2

Median = (80 + 80) / 2 = 160 / 2 = 80

2.) The mode

4 0

3 years ago

Please help me with this I’m stupid?

lions [1.4K]

Hi there! The answer is $104

To find our solution we only have to multiply the original price by 1.6 ( 100 % for buying + 60 % markup = 160%, so multiply by 1.6).

We get the following answer:
$65 \times 1.6 = 104$

Therefore, the selling price for one camera is $104.

~Hope this helps you~

8 0

3 years ago

Need help with algerbra

TiliK225 [7]

Y^2+5y the greatest common factor is y so

y(y+5)

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4x^2-49 this is a "difference of perfect squares" which always factors to:

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(2x-7)(2x+7)

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5s^2-20 GCF is 5

5(s^2-4) now the parenthetic term is a difference of squares so

5(s-2)(s+2)

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3 years ago

What is the difference between induction and deduction in math ?

natka813 [3]

I think that induction is based on making conclusions based on previous examples such as "3,5,7 are primes, so every odd integer. Deduction it's based on logical reasoning other than examples

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3 years ago