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Over [174]
3 years ago
8

Explain how you can find the value of the expression -5+12+10-7

Mathematics
2 answers:
Oliga [24]3 years ago
5 0
-- Take. -5 . -- Add 12. to it. -- To the result, add 10. --- From that result, subtract 7 . -- The current result is the value of the expression.
erica [24]3 years ago
4 0
Well... -5+12 you gotta add that first and look for the biggest number that's when you can decide whether the answer is - or + so -5+12= 7 then you add 7+10 which is 17 and then 17-(-7) WAIT (did you know that when a negative sign is besides a subtraction sign you change the subtraction sign for a + and the number is not gonna be negative and it changes into a positive so 17 -(-7) {17+7}= 24 if you doubt use a calculator! HOPE I HELPED! And I was really bad about this too, I just understood today. LOL
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Find the probability of getting a king then an eight. Assume the cards are not replaced?
Nastasia [14]
There are 4 king and 4 eight cards inside 52 one deck of cards. The case asks for a king card and then an eight card. 
To draw the king card, you have 4/52 probability.
To draw the eight card, you have 4/51 probability ( since the king card not replaced).

The total probability would be: 4*4/ 52*51= 4/663

4 0
3 years ago
The ratio of roses to carnations is 7 to 5. If 96 flowers are needed for table decorations,
coldgirl [10]

Answer: 56 roses and 40 carnations are needed.

Step-by-step explanation: <u>Here’s the table of ratios that’ll help you find how many roses and carnations are needed to make a total of 96 flowers for table decorations:</u>

7:5 /14:10 /21:15 /28:20 /35:25 /42:30 /49:35/ 56:40/

*56 + 40 = 96

Hence, 56 roses and 40 carnations are needed if 96 flowers are needed for table decorations.

<u></u>

8 0
2 years ago
JULIE HAS 10 YARDS OF RIBBON. SHE DIVDES THE RIBBON INTO 3 EQUAL PIECES AND USES 2 OF THE PIECES ON GIFTS. HOW MUCH RIBBON DOES
Aliun [14]

Answer:

6.66 yards of ribbon.

Step-by-step explanation:

If she has 10 yards of ribbon and divides it equally into three parts, those 3 parts would each be 3.33 yards long or 3 (1/3) yards long.

If she uses two of those parts on gifts, then she would use 3.33 x 2 or 6.66 yards of ribbon.

8 0
3 years ago
Square A has a side length of (2x - 7) and Square B has a side length (-4x + 18). How much bigger is the perimeter of Square B t
stich3 [128]

Answer: 100 - 24x

Step-by-step explanation:

The formula for calculating the perimeter of a square is given by :

P = 4l , where l is the length of the side.

Perimeter of square A will be

P = 4 ( 2x - 7 )

P = 8x - 28

Perimeter of square B will be ;

P = 4 ( -4x + 18 )

P = - 16x + 72

Perimeter of square B - Perimeter of square A implies

-16x + 72 - ( 8x - 28 )

-16x + 72 - 8x + 28

collecting the like terms

-16x - 8x + 72 + 28

-24x + 100

⇒ 100 - 24x

3 0
3 years ago
Set A contains three different positive odd integers and two different positive even integers; set B contains two different posi
Lostsunrise [7]

Answer:

\frac{2}{5}*\frac{3}{5} +\frac{2}{5}*\frac{2}{5}+\frac{3}{5} *\frac{3}{5}  = \frac{19}{25}

Step-by-step explanation:

We must remember that in order to get one even number we need to multiply one even number times one odd number or two even numbers. So, the first term tells the probability of having an even number from A and an even number from B, the next would be even from A and odd from B and the last one tells the likelihood of having odd from A and even from B

3 0
3 years ago
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