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PSYCHO15rus [73]

3 years ago

11

Which of the following is CORRECTLY written in scientific notation? Question 1 options: .34 x 10(exponent 3) 34 x 10(exponent 3)

3.4 x 10(exponent 3)

1 answer:

ExtremeBDS [4]3 years ago

5 0

Correct scientific notation has only one number to the left of the decimal point.

The correct one would be: 3.4 x 10(exponent 3)

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I can't figure it out. <br>2x+2y=2<br>-4x+4y=12<br>

koban [17]

Answer:

how to solve 2x+2y=2 , -4x+4y=12

this is solving equations using substitution .... i have ALOT more but i juss dnt get this stuff

2x + 2y = 2 -4x + 4y = 12

x + y = 1

x = 1 - y

-4x + 4y = 12

-4(1 - y) + 4y = 12

(-4 + 4y) + 4y = 12

-4 + 8y = 12

8y = 16

y = 2

2x + 2y = 2

2x + 2(2) = 2

2x + 4 = 2

2x = -2

x = -1

Check.

-4x + 4y = 12

-4(-1) + 4(2) = 12

4 + 8 = 12

Answer: x = -1 and y = 2

Step-by-step explanation:

6 0

2 years ago

Tristan records the number of customers who visit the store each hour on a Saturday. His data representing the first seven hours

Alona [7]

Answer:

Option C is correct.

Step-by-step explanation:

We have been given total 8 data

Data is : 12,15,18,20,23,23,28

Here, n=7

Median is $\frac{n+1}{2}=\frac{7+1}{2}=4th term$

Median is 20.

When one data is added n=8

The median of even number of data is

$median=\frac{\frac{n}{2}\text{th and}\frac{n}{2}+1\text{th}}{2}$

Median is $\frac{8}{2}\text{th and}\frac{8}{2}+1th$

Median is $4\text{th and}5th$

4th terms is 20

5th terms is 23

Since, median should not be change hence,

Median will be 20.

Therefore, option C is correct.

6 0

3 years ago

Read 2 more answers

Someone pls help...<br> I'm terrified I'm gonna fail and this test is literally my life...

guajiro [1.7K]

Answer: it is 49 or -49

Step-by-step explanation:

if you divide 49 by 7 it comes out to seven because 7 times 7 is 49.

6 0

3 years ago

Figure 1 and figure 2 are show on the coordinate plane below.

Mekhanik [1.2K]

Answer:

d think

Step-by-step explanation:

I don't really know but I'm pretty sure that's it.

6 0

3 years ago

write and solve a real- world problem involving the multiplication of a fraction and a whole number whose product is between 10

Tomtit [17]

Answer:

Real word Problem:- Jean is working in a pizza shop. She has 60 kg of flour. She has used one-fifth of it for making pizzas. How much flour she used for making pizzas?

Solution:- Quantity of flour she has= 60 kg

The quantity she used in making pizzas= $\frac{1}{5}\ of\ 60$

$=\frac{1}{5}\times60=12\ kg$

hence, she used 12 kg of flour for making pizzas.

Here the multiplication of a fraction and a whole number $=\frac{1}{5}\times60$ and its answer is between 10 and 15, since 10<12<15.

4 0

2 years ago

Read 2 more answers