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RideAnS [48]
2 years ago
9

5 • (- 10) x = 100 Esse número apagado foi (A) 2 (B) 20 (C) -5 (D) -257*

Mathematics
1 answer:
Anettt [7]2 years ago
4 0
The answers is A
Explanation ;)
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What numbers could replace each letter to make both of the number sentences true?
svp [43]
N x n would be 8 an 8 and N x P would be 8 and 7
6 0
2 years ago
A restaurant bill before tax is $15.50. how much is a 15% tip for this bill?
Oksanka [162]
15.50 times .15 is $2.33
6 0
3 years ago
Read 2 more answers
If you place a 28-foot ladder against the top of a 22 foot building
KATRIN_1 [288]

Answer:

17.3 ft

Step-by-step explanation:

To find the second leg, use the following: √c² - a². Substitute c for 28, and a for 22.

b = √28² - 22² <em>{Square 28 to get 784, and square 22 to get 484.}</em>

b = √784 - 484 <em>{Subtract 484 from 784 to get 300.}</em>

b = √300 <em>{Find the square root of 300.}</em>

b = 17.32051 <em>{Round to the nearest tenth.}</em>

b = 17.3 ft.

The bottom of the ladder will be 17.3 ft from the bottom of the building.

<em>I hope this helps! ^w^</em>

5 0
3 years ago
How many real solutions are there to 5x^2+6x+4=0?
zimovet [89]

Answer:

No real solutions

Step-by-step explanation:

Use the discriminant to determine the number of real solutions to a quadratic equation.  

The general form for a quadratic equation is ax² + bx + c

The discriminant is    b² - 4ac

The following 3 rules apply...

1. If  b² - 4ac > 0, then there are 2 real solutions

2. If  b² - 4ac = 0, then there is one real solution

3. If  b² - 4ac < 0 then there are no real solutions

For this problem,

a = 5

b = 6

c = 4

Plug them into  b² - 4ac....

6² - 4(5)(4)

  36 - 80

   

       -54           so  b² - 4ac < 0 , there are no real solutions  

7 0
3 years ago
At an airport restaurant, 2 sodas and 4 hamburgers cost $12.00. An order of 4 sodas and 2 hamburgers costs $9.00. How much does
Marizza181 [45]

Answer:

The cost of one hamburger is $2.50

The cost of the soda will be $1.00

Step-by-step explanation:

Let the cost of one soda be s

and let the cost of one hamburger be h

Part 1) 2 sodas and 4 hamburgers cost $12.00

2s + 4h = 12

2 (s + 2h) = 12

Dividing the whole equation by 2, we get

s + 2h = 6

s = 6 - 2h (part 1)

Part 2) 4 sodas and 2 hamburgers costs $9.00

4s + 2h = 9 (part 2)

Substituting the value of s from part 1 in part 2, we get

4(6 - 2h) + 2h= 9

24 - 8h + 2h = 9

24 - 6h = 9

-6h = 9 - 24

-6h = -15

h = -15/-6

h = 2.5

So, the cost of one hamburger is $2.50

s = 6 - (2 * 2.50)

s = 6 - 5 = 1

the cost of the soda will be $1.00

5 0
2 years ago
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