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Nostrana [21]
3 years ago
12

- The expression x² - 5 is prime. Is it true or false

Mathematics
1 answer:
lana [24]3 years ago
7 0

Answer:

false

Step-by-step explanation:

X squared minus 5 is not necessarily prime

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A bat and a ball cost one dollar and ten cents in total. The bat costs a dollar more than the ball. How much does the ball cost?
SOVA2 [1]

Answer:

5 cents

Step-by-step explanation:

If bat + ball = 1.10 and the bat is a dollar more you know that the bat must cost at least 1 dollar. Divide the ten cents by two to split it evenly between the two and $1.05 is one dollar more than 5 cents

8 0
3 years ago
If two dice are rolled one time, find the probability of getting doubles or a sum of 8.
Pie
9 times it will be 98 rhr
4 0
3 years ago
A school team won 80% of its matches. Out of all the matches played, the team won 40 matches. How many matches did the soccer te
sergij07 [2.7K]

Answer:

50 games

Step-by-step explanation:

(sorry if it makes so sense) The reason of this is because you know that 80%=40 matches so you need to find what the other 20% was... What I did was multiply 50 x .80 to see if it wave me 40 and it did.

3 0
4 years ago
Solve the system using elimination. -2x+6y=18 -4x-6y=18
oksano4ka [1.4K]

Answer:

(-6,1)

Step-by-step explanation:

-2x+6y=18

-4x-6y=18

Add the two equations together to eliminate y

-2x+6y=18

-4x-6y=18

--------------

-6x   = 36

Divide each side by -6

-6x/-6 = 36/-6

x = -6

Now we need to find y

-2x +6y = 18

-2(-6) +6y = 18

12 +6y = 18

Subtract 12 from each side

12-12 +6y = 18-12

6y = 6

Divide by 6 on each side

6y/6 = 6/6

y = 1

3 0
3 years ago
Read 2 more answers
Temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius . One day the high tempe
bazaltina [42]

The high temperature is 35 degree celsius

<em><u>Solution:</u></em>

Given that, Temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius

Let "f" be the temperature in degree Fahrenheit

Let "c" be the temperature in degree celsius

Therefore,

Temperature in degrees Fahrenheit = 32 + \frac{9}{5} times the temperature in degrees Celsius

f = 32 + \frac{9}{5} \times c

One day the high temperature in Edison. Nj was 95 degrees Fahrenheit

f = 95 ; c = ?

Substitute f = 95 in above equation

95 = 32 + \frac{9c}{5}\\\\95=\frac{32 \times 5 +9c}{5}\\\\95 \times 5 = 160+9c\\\\475 = 160 + 9c\\\\9c = 475 - 160\\\\9c = 315\\\\c = 35

Thus high temperature in degrees Celsius is 35 degree celsius

5 0
3 years ago
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