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3 years ago

Hi!! Can someone plsss help me

Mathematics

1 answer:

olga_2 [115]3 years ago

5 0

Answer:

okay umm if i were you i would pick an answer a and write an good answer

Step-by-step explanation:

You might be interested in

for a normal distribution curve with the mean of 15 and a standard deviation of 5, which range of the variable defines an area u

kipiarov [429]

Using empirical rule,
Upper range of 68%=15+5=20
Lower range =10
Range=10

8 0

3 years ago

Andrew bought 3 baseball cards for $240. After a few months, he got an offer from his friend Jack to buy the first card for doub

Dominik [7]

First we define variables:
x = first card original value
y = second card original value
z = third card original value
We write the system of equations:
Andrew bought 3 baseball cards for $ 240:
x + y + z = 240
the first card (at its original value) along with the second card (at its original price) and got $ 320:
2x + y = 320
the first card (at its original value) card along with the third card (at its original price) would have only got him $ 280:
2x + z = 280
Solving the system we have:
x = 120
y = 80
z = 40
Answer:
The original prices for each of the 3 baseball cards is:
(120, 80, 40)

8 0

3 years ago

Give an example of fractions that you would compare by finding common denominators,and an example of fractions you would compare

creativ13 [48]

Answer:

Correct answer: 2/3 < 3/4

Step-by-step explanation:

We will compare the following two fractions:

2/3 and 3/4

First we will find common denominator:

The common denominator for 3 and 4 is 12, then we will multiply

first fraction with 4 and second with 3 and get:

8/12 and 9/12 and we conclude that 9/12 is greater than 8/12

respectively that 3/4 is greater than 2/3

Second we will find common numerator:

The common numerator for 2 and 3 is 6, then we will multiply

first fraction with 3 and second with 2 and get:

6/9 and 6/8 and we conclude that 6/8 is greater than 6/9, the reason is, the greater the fraction, the smaller the denominator

respectively that 3/4 is greater than 2/3

God is with you!!!

3 0

3 years ago

What number would you add to both sides of x2 + 7x = 9 to complete the square?!...

Burka [1]

Answer:

Step-by-step explanation:

x2+7x=9

x+x+2+7=9

2x+9=9

4 0

3 years ago

The price of a toy usually costs £50 is increased to £65 work out the percentage increase

I am Lyosha [343]

Answer:

Step-by-step explanation:

10% of 50 = 5

5% of 50 = 2.5

to get to 65 u do 5+5 = 10 so so far that is 20% but 20% only gets u to 60 so u add another 10% to reach 65

u have used 30% so the answer to yr question is 30%

<h2><em>does this help comment if / if not </em></h2>

8 0

3 years ago