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givi [52]
3 years ago
9

Solve the equation. 4k^2 = 5k

Mathematics
2 answers:
stich3 [128]3 years ago
8 0
The answer is d. 4(1)^2=5(4/5). 4=4.
Mekhanik [1.2K]3 years ago
3 0
The answer is B. Your going to subtract 4k^2 from both sides, which it would be 4k^2-5k=0. Then you going to factor k(4K-5)=0, which k=0 and 4K-5=0 and then k =0 and 4/5
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A soccer field is 120 yards long and 60 yards wide.How long is the diagonal of the field?
Triss [41]

Answer:

180 yards

Step-by-step explanation:

120 + 60 =180 so therefore you will travel 120 yards forward and 60 yards over so 180 yards total

4 0
3 years ago
Read 2 more answers
In aΔABC, if ∠B = 60° and the ratio of two sides is a : c = 2 : √3 + 1, then ∠A= ____.
UkoKoshka [18]

Answer:

∠A= 45°....

Step-by-step explanation:

To find  ∠A first we have to find the length of side B by cosine law:

b^2 = a^2 + c^2 – 2 a c cos B

b^2=(2)^2 +(√3 + 1)^2 - 2(2)(√3 + 1) cos 60

b^2 = 6

Taking square root at both sides:

√b^2 = √6

b= 2.45

Now we can calculate ∠A by sine law:

b / sin B = a / sin A

2.45 / sin 60 = 2 / sin A

sin A= 2* √3/2 /2.45

sin A = 2√3/2 * 1/2.45

sinA = 2√3/ 4.9

sin A = 0.7069

sin A = 0.707

A=45°

Thus ∠A= 45°....

4 0
3 years ago
Solve for j.<br> 4 - 2 = 3<br> = 3(1/3j+2)
Lerok [7]
J would equal 8/3 hope this helps
8 0
2 years ago
I need to find the least common denominator of x+2/x^2+2x-3 , x-7/x^2+5x+6
grin007 [14]

Answer:

(x + 3)(x - 1)(x + 2)  

Step-by-step explanation:

The fractions are:  

\dfrac{x + 2}{x^{2} + 2x - 3} \text{ and } \dfrac{x - 7}{x^{2} + 5x + 6}

Factor each denominator  

x^{2} + 2x - 3 = (x + 3)(x - 1)\\x^{2} + 5x + 6 = (x + 3)(x + 2)

We must find the least common multiple of the denominators.  We take the maximum power of each separate factor.

      Factors of first fraction = (x + 3) × (x - 1)

Factors of second fraction = (x + 3)             × (x + 2)

                                   LCM = (x + 3)(x - 1)(x + 2)

The lowest common denominator of the two fractions is (x + 3)(x - 1) (x + 2).

4 0
3 years ago
Reduce 14 feet to 21 yards to lowest term
stich3 [128]
2 feet to 3 yards


i divided both sides by 7
4 0
3 years ago
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