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katrin [286]
2 years ago
15

Find each unit rate. 4/5of a chapter in 3/10 hour

Mathematics
1 answer:
ZanzabumX [31]2 years ago
8 0

Answer:

8/3mph

Step-by-step explanation:

you must multiply both fractions by the reciprocal of 3/10 which is 10/3

(4/5 * 10/3) / (3/10 * 10/3)

(40/15) / (30/30)

(8/3) / 1

8/3 /1 = 8/3

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Mai made $112 for 8 hours of work.
vodomira [7]

Answer:

18 hours

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Let a be a real number and n a positive integer . show that x-a is a factor of x^n- a^n
nikklg [1K]

Answer:

steps below

Step-by-step explanation:

x-a=0

x=a   plug in xⁿ - aⁿ

xⁿ - aⁿ = aⁿ - aⁿ = 0

(x-a) must be a factor of xⁿ - aⁿ

6 0
3 years ago
In triangle ABC, a = 4, b = 6, and cos C = − 1/4. What is the length of side c?
shusha [124]

The length of side c would be 8.

Step-by-step explanation:

Given that,

a = 4

b = 6

cosC = -1/4

If we are given two sides and angle, the law of Cosines can be used to find the third side:

c^{2} = a^{2} + b^{2} - 2ab (cos(c))

By inserting the values in the formula, we get

c^{2} = 4^{2} + 6^{2} - 2.4.6 (-\frac{1}{4} )

c^{2} = 16 + 36 + 12

c^{2} = 64

\sqrt{c^{2} } = \sqrt{64}

c = 8.

Therefore, the length of side c would be 8.

7 0
3 years ago
2/5 ÷ 2/3 = 2/5 x _=_<br>​
natali 33 [55]

Answer:

the answer is 1 I guess

Step-by-step explanation:

2/5 - 3/5

2-3/5

1

7 0
3 years ago
What is the value of this expression: 2 + 42 - 6 x 25 + 3
Zigmanuir [339]

2+42 -6 * 25 +3

= 44 - (6)(25)+3

= 44-150+3

= -106+3

= -103


I hope that's help !

7 0
3 years ago
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