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dangina [55]
3 years ago
7

Evaluate the expression for x=5, y=-3 and z=7 (x2 – z) (22+5)

Mathematics
1 answer:
zepelin [54]3 years ago
8 0

Answer:

81

Step-by-step explanation:

(Refer to image)

Plug in x and z and follow order of operations to simplify the expression

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How many solutions does the pair of equations y = 0 and y = -5 have?
Crank

Answer: None

Step-by-step explanation:

y=0 and y=-5 don't have any solutions. When you ask if a pair of equations have a solution, that means there is an intersection of the equations. The 2 equations will meet somewhere, and that is the solution. To find the solution, you set the equations equal to each other.

0≠-5

It is obvious that 0 and -5 are not equal to each other. Therefore, there is no solution. Also, y=0 and y=-5 are horizontal lines that are parallel to each other. They will never meet, which means there will be no intersection. No intersection means no solutions.

8 0
3 years ago
1) A prize is divided in the ratio 15:1 if the smaller share is £5 what is the total prize?
Alex777 [14]

Answer:

£80

Step-by-step explanation:

larger ratio is 15 and smaller ratio is 1

15 + 1 = 16

£5×16=£80

6 0
2 years ago
The sum of two numbers is 98. One number is 76 less than the other.
Lady bird [3.3K]

Answer:

Step-by-step explanation:

1. n + y = 98

2. n = 76 - t

7 0
3 years ago
Read 2 more answers
Please help I will give you a lot of points and the brainiest.
dimulka [17.4K]

Answer:

The sum is 17,690 nine

Step-by-step explanation:

8 0
3 years ago
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Joe Hernandez has inherited $25,000 and wishes to purchase an annuity that will provide him with a steady income over the next 1
mote1985 [20]

Answer:

p=2982

Step-by-step explanation:

Rate of interest = 6 % p.a

No of year = 12

P.V = $ 25000

Installments (p) = ?

We know the formula of P.V annuity

P.V = P[ 1-(1+r)-n/r]

25000 = P[1-(1+0.06)-12/0.06]

P = 2982 will withdraw annuity

8 0
3 years ago
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