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2 years ago

Plssssssss helpppppp

Mathematics

2 answers:

makkiz [27]2 years ago

7 0

64% Shes right completely

pochemuha2 years ago

6 0

I think 64%
Explaining;

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How do I answer this question?

siniylev [52]

Answer:

u = (sa) + k

Step-by-step explanation:

$s = \frac{u - k}{a} \\ = > sa = u - k \\ = > (sa) + k = u$

4 0

3 years ago

I need help with this i understand how to do

babunello [35]

Answer: Angle DCE would be 12

Step-by-step explanation:

Assuming that angle BCD is right then just set up equation to equal to 90

4x+10+2x+8=90

then solve

6x+18+90

6x=72

x=12

8 0

3 years ago

Help help! 50+ points plus Brainlist answer if work is shown!

3241004551 [841]

Answer:

4 sqrt(5)

-----------------

83 +12 sqrt(35)

Step-by-step explanation:

1. 4 sqrt(6)

--------------------

sqrt(30)

Multiply the top and bottom by sqrt(30) to rationalize the denominator

4 sqrt(6) *sqrt(30)

--------------------

sqrt(30)*sqrt(30)

4 sqrt(180)

--------------------

Simplify

2 sqrt(36 *5)

--------------------

We know that sqrt(ab) = sqrt(a) sqrt(b)

2 sqrt(36)sqrt(5)

--------------------------

2 *6*sqrt(5)

-------------------

Simplify

2 * 2 sqrt(5)

---------------------

4 sqrt(5)

-----------------

2. (2 sqrt(5) + 3 sqrt(7))^2

(2 sqrt(5) + 3 sqrt(7)) (2 sqrt(5) + 3 sqrt(7))

FOIL

first 2sqrt(5)*2sqrt(5)=4*5=20

outer 2 sqrt(5) * 3 sqrt(7) = 6 sqrt(35)

inner 3 sqrt(7) *2 sqrt(5) = 6 sqrt(35)

last 3sqrt(7) 3sqrt(7) = 9*7 = 63

Add them together = 20 + 6 sqrt(35)+ 6 sqrt(35) +63 = 83 +12 sqrt(35)

6 0

4 years ago

In a cross-country race with 35 participants , the mean finish time was 21 minutes . Which statement must be true?

antiseptic1488 [7]

The answer is c, all others can be ruled out.

6 0

3 years ago

As a small step to save the environment, Luna came up with an idea for her sweet shop. In exchange for five eclaire boxes, that

zavuch27 [327]

Answer: 15

Step-by-step explanation:

Since we are informed that in exchange for 5 eclaire boxes, that Luna gets, she decided to give 1 eclaire box for free.

Then, the number of eclaires boxes that they can buy from Luna using 77 claire boxes will be:

= 77 / 5

= 15 2/5

= 15 approximately

They'll get 15 boxes of eclaires from Luna.

4 0

3 years ago