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4 years ago

Which are rational numbers?

Mathematics

1 answer:

lions [1.4K]4 years ago

7 0

Answer: all except for 3/0

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Need help plz due on Monday I believe

ra1l [238]

Answer:

1(a) = 10

1(b) = 9

1(c) = 12

2(a) = 8

2(b) = 10

2(c) = 1

Step-by-step explanation:

1(a) = 22 - 2.6

= 22 - 12 = 10

1(b) = 6 - 1/4 . 16 + 21 / 3

= 6 - 16/4 + 7

= 6 - 4 + 7

= 9

1(c) = (8-5). (5-3)^2

= 3*2^2

= 3*4

= 12

2(a) = 4(x-2)/(x-1) when x = 0

= 4(0-2)/ (0-1)

= 4*-2/-1

= -8 / -1

= 8

2(b) = (-3x^2 + 4) / 4 when x = -2

= (6^2 + 4) / 4

= (36 + 4) / 4

= 40 / 4 = 10

2(c) = [-2x/4 + 4*(x-1)] / x^2 - 1 when x = 2

= (-1 + 4 * 1) / 4 - 1

= 3 / 3

= 1

6 0

3 years ago

Read 2 more answers

Rebecca gets a part time job in order to pay for her cheerleading uniform. her employer tells her that she will be earning $7.25

qwelly [4]

<u>Answer:</u>

$1972

<u>Step-by-step explanation:</u>

We are given that Rebecca will earn $7.25 per hour for her job and she is promised to have 34 hour workdays per week.

We are to find the minimum amount of money she will gross in eight weeks.

Number of hours of work in 8 weeks = $34 \times 8$ = 272 hours

Minimum amount of money she will earn in 8 weeks = $272 \times 7.25$ = $1972

4 0

3 years ago

in his first three rounds of golf, Jon scored 72, 78, and 73. What is the highest score he can earn in his fourth round and stil

kupik [55]

No greater means equal or less. Because the problems asks about the highest score(maximum value), we are going to solve following equation:
(72+78+73+x)/ 4 = 74
(72+78+73+x)=74*4
223+x=296
x=296-223= 73
Answer is 73.

8 0

3 years ago

How many triangles are there that satisfy the conditions a =13, b =9, A = 62°?

8_murik_8 [283]

Answer:

Step-by-step explanation:

Alright, lets get started.

Using sin Law,

$\frac{sinA}{a}=\frac{sinB}{b}$

Plugging the value of a, b and angle A

$\frac{sin62}{13}=\frac{sinB}{9}$

$sinB=\frac{9*sin62}{13}$

$sinB=\frac{9*0.8829}{13}$

$sinB=0.61127$

taking sin inverse on both sides

$B=sin^{-1}(0.61127) =37.68$

The may be another value of B that will called B' = $180-37.68=142.32$

We will not consider this B' value because the um of angle B' and A will exceeds 180 degree ( $142.32+62=204.32$ )

Thats why only one triangle is possible. : Answer

Hope it will help :)

5 0

3 years ago

Solve the equation for x.

elena55 [62]

Answer:

the answer is x=6 for this question

5 0

3 years ago