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3 years ago

I am not so good at math please help

Mathematics

1 answer:

Ilya [14]3 years ago

7 0

Answer:

not sure but I think it's c

Step-by-step explanation:

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PLEASE HELP WITH THIS ONE QUESTION

poizon [28]

Answer:

2nd, 3rd and 4th answers are true

Step-by-step explanation:

$1)false \\ \\ 2)16 {x}^{2} - 64 {y}^{2} \\ {4}^{2} {x}^{2} - {8}^{2} {y}^{2} \\ (4x - 8y)(4x + 8y) = > true \\ \\ 3) {x}^{2} - 169 \\ {x}^{2} - {13}^{2} \\ (x + 13)(x - 13) = > true \\ \\ 4) {9x}^{2} - 1 \\ {3}^{2} {x}^{2} - {1}^{2} \\ (3x - 1)(3x + 1) = > true \\ \\ 5)false$

6 0

3 years ago

Read the statement, and identify the expressions that are equivalent.

Digiron [165]

B. (n + 15) x 3--- That seems to be the correct answer. I hope I helped!

5 0

3 years ago

Find the length of arc AB

marissa [1.9K]

Step 1: Find the circumference of the circle

Formula for circumference: C = 2 * pi * r

C = 2 * pi * 27

C = 54pi

Step 2: Find the length of the desired arc

We are only looking for 20 degrees out of 360 degrees, therefore we can multiply our circumference by 20/360.

20/360 * 54pi = 3pi units

Hope this helps!

7 0

3 years ago

Richard's cumulative GPA for 3 semesters_ was 2.0 for 42 credits. His fourth semester GPA was 4.0 for 14 course units. What is R

Phoenix [80]

Answer:

Richard's cumulative GPA = 2.5

Step-by-step explanation:

Richard's cumulative GPA for 3 semesters was 2.0 for 42 credits.

Average = 2

Total credits = 42

Average = sum of terms/total no of terms

2 = sum of terms/42

sum of terms = 84 ....(1)

His fourth semester GPA was 4.0 for 14 course units

Average = 4

Total credits = 14

sum of terms = 56 .....(2)

Average for 4 semesters,

$A=\dfrac{84+56}{42+14}\\\\A=2.5$

Hence, Richard's cumulative GPA for all 4 semesters is 2.5.

8 0

3 years ago

Which is the graph of the rose curve r=4 cos2 phi

Tanya [424]

Answer:

b part is the answer

please mark me brainliest and follow me my friend.

5 0

3 years ago