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Tems11 [23]
3 years ago
15

Evaluate the expression 9ab + c if a=-7, b=9, and c = 4

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

-563

Step-by-step explanation:

a = -7 , b = 9 , c = 4

9ab +C

9 × -7 × 9 + 4

81 × -7 + 4

-567 + 4

-563

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The ratio of the length and the breadth of rectangle is 2:1.If the rectangle is 12m long, find the its breadth ​
Vlad1618 [11]

Answer:

6m

Step-by-step explanation:

The ratio of the length and the breadth of rectangle=2:1

Let length be 2x, then breadth = x

Now,

Length(l)=12 m

or,2x=12m

or,x=6m

x=breadth=6m

4 0
2 years ago
HELP PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Bas_tet [7]

Answer:

c

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
4x + 6y - z=-18<br> 3x +2y - 4z = -24<br> - 5x + 3y + 2z = 15<br> find x y and z
Anna71 [15]

Answer:

x = -2, y = -1, z = 4

Step-by-step explanation:

4x + 6y - z=-18

z  = 18  + 4 x  +  6 y

3x +2y - 4z = -24

z  = 6  + (3x)/ 4  +  y /2

- 5x + 3y + 2z = 15

z = 15/2 + (5x)/2 - (3y)/2

18  + 4 x  +  6 y = 6  + (3x)/ 4  +  y /2  = 15/2 + (5x)/2 - (3y)/2

x = -22y/13 - 48/13

4(-22y/13 - 48/13) + 6y - (15/2 + (5(-22y/13 - 48/13))/2 - (3y)/2) = -18

Compute the output value of the variables x and y with respect to the input values of x, y, and z coefficients.

4 0
3 years ago
An athlete runs 90 laps in 6 hours. This is the same
kolezko [41]
Im thinking the answer is c
7 0
3 years ago
Read 2 more answers
Rebecca and Megan are shopping at store that sells jewelry, scarves, and purses. The cost of all the items at the store include
Virty [35]
To answer this item, we let n be the number of scarves that Rebecca bought because the number is unknown. The total cost would be the sum of the amount paid for n scarves and 2 purses. The equation would then be,
                                     5n + (12)(2) = 39
Simplifying,
                                      5n + 24 = 39

Thus, the answer is letter B. 
6 0
3 years ago
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