3 years ago

I'll mark brainliest if you help me on this

Mathematics

2 answers:

kirill [66]3 years ago

7 0

Answer:

3 3/4 i think

larisa [96]3 years ago

5 0

the two thickest books are:

$\tt 1\dfrac{6}{8}~and~2$

the total:

$\tt 1\dfrac{6}{8}+2=\dfrac{14}{8}+\dfrac{16}{8}=\dfrac{30}{8}=3\dfrac{6}{8}=3\dfrac{3}{4}$

You might be interested in

When Alexis adopted her puppy, the puppy weighted 12 pounds. One year later, the puppy weighted 60 pounds. By what percent did t

iVinArrow [24]

Answer:

400%

Step-by-step explanation:

Original wieght = 12

New weight = 60

Change = 60- 12= 48

Change percent = change / original x 100 = 48 / 12 x 100 = 400 %

I hope its right!!!! :)

7 0

3 years ago

Addition doubles fact to help find 4+3

skad [1K]

4+4 = 8

But the one above is one less so you minus one from eight:
8-1 = 7

Hope this helps! :)

7 0

4 years ago

On a recent quiz, the class mean was 72 with a standard deviation of 4.2. Calculate the z-score (to 2 decimal places) for a pers

barxatty [35]

Answer:

The Z score of the person is -3.09.

Step-by-step explanation:

The standard normal deviate (Z) for a normal distribution is given by

$Z=\frac{X-\bar{X}}{\sigma }$

where,

X = the value of observation

$\bar{X}$ is mean of the observations and

σ = standard deviation of the score

Applying values we get

$Z=\frac{59-72}{4.2}=-3.09$

5 0

4 years ago

Which statement about N must be true?

rjkz [21]

Answer: N=15

Step-by-step explanation: This is because (4n-18) when solved needs to equal 42. So when solving this you would change the equation to 42=4n-18 and then you need to isolate n. In order to do that you do the opposite so your equation becomes 42+18=4n or (60)=4n. And then you divide 60/4 and get n by itself. Therefore N=15.

3 0

3 years ago

Oliwia made a scale copy of the following triangle she used a scale factor greater than 1 whats the height

Mariana [72]

Answer:

Is this the complete question? is there a figure for this?

8 0

4 years ago