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Goshia [24]
3 years ago
10

Need help ASAP please and thank you

Mathematics
1 answer:
Inga [223]3 years ago
6 0
A, it has the correct values in the correct columns and rows which add up to equal what they should
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Please someone help me out I don't understand ;-;
Nesterboy [21]

Answer:

Yes

Step-by-step explanation:

90 minutes each - 360 ÷ 4

7 0
3 years ago
Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0
Black_prince [1.1K]

Answer:

x = pi, 3pi, 5pi  etc

x = -pi, -3pi, -5pi etc

Step-by-step explanation:

cos^2 x + 2 cos x + 1 = 0

replace cos x with m

m^2 + 2m +1 = 0

solve by factoring  (this is a^2 +2ab+b^2 = (a+b)^2  where a =m and b=1)

(m+1)^2=0

take the square root of each side

m+1 =0

m=-1

now replace m with cos x

cos x = -1

take arccos  of each side

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3 0
3 years ago
The length of the rectangular field is 18cm, and the width is 24cm,
natali 33 [55]

Step-by-step explanation:

Just do this

2(L+B)

2(18+24)

2×42

84 Ans.

6 0
3 years ago
Read 2 more answers
The slope of the line passing through the points (0, 3) and (5, 7) is<br> 4/5<br> 7/2<br> 5/4
solong [7]
<span>The slope of the line passing through the points (0, 3) and (5, 7) is 4/5</span>
7 0
3 years ago
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A restraurant owner estimates that his restaurant will sever 430 customers the first week it is open the actual number of custom
AlexFokin [52]

Answer:

7.5% error

Step-by-step explanation:

Percent Error = ( | measured - real | / real ) x 100%

|430 - 400| / 400 = |-30| / 400

( 30 / 400 ) x 100%

= 7.5%

5 0
3 years ago
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