All categories

3 years ago

Please please help please

Mathematics

2 answers:

lara31 [8.8K]3 years ago

8 0

Answer:

that question has to be C sorry if im wrong

Step-by-step explanation:

because its moving 90 decreese

nikklg [1K]3 years ago

5 0

Answer: It will still measure the same at 30 degrees.

Step-by-step explanation:

A rotation just changes orientation, not size or measure

You might be interested in

Cindy can read in different amounts of time 10 pages in 8minutes, 15 pages in 12 minutes and 25 pages in 20 minutes what is the

babunello [35]

Answer:

5/4

Step-by-step explanation:

10/8 = 5/4

15/12 = 5/4

25/20 = 5/4

They all simplify to 5/4.

Hope this helps!

5 0

3 years ago

select yes or no to indicate if a rectangle with the given dimensions whould have a perimeter of 50 inches

umka21 [38]

1a) no it would be 54

1b) yes

1c) yes

1d) no it would be 40

1e) yes

hope this helped

8 0

3 years ago

Question

Alekssandra [29.7K]

Answer:

$d=7.8\ g/cm^3$

Step-by-step explanation:

Given that,

The dimensions of a rectangular block = 4 cm x 2 cm x 1.5 cm

Mass, m = 93.6 g

We need to find the density of steel. We know that the density of an object is equal to the mass divided by volume. So,

$d=\dfrac{m}{V}\\\\d=\dfrac{93.6}{4\times 2\times 1.5}\\\\d=7.8\ g/cm^3$

So, the density of the steel is $7.8\ g/cm^3$ .

8 0

2 years ago

What is the seventh term of the sequence whose nth term is (n + 1)(n − 2)?

pav-90 [236]

If you plug in 7 for n, you get
(7+1)(7-2).
Simplify that.
(8)(5)
Simplify that and you get the 7th term of the particular sequence is,
40
Hope it helps :D

8 0

3 years ago

A sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4. You want to c

Nikolay [14]

Answer:

21, 144, 12

Step-by-step explanation:

Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.

Let X be the distance in yard.

i.e. each entry of x is multiplied by 3.

New mean variance std devition would be

E(3x) = $3E(x) = 21$

Var (3x) = $3^2 Var(x) = 9(16) =144$

Std dev (3x) = $\sqrt{144 } =12$

Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9

4 0

2 years ago