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krok68 [10]
3 years ago
12

-3x+y=5 y=-7 solve the system by graphing

Mathematics
1 answer:
Alinara [238K]3 years ago
8 0

Answer:

x = -4

Step-by-step explanation:

-3x+y-=5

-3x+-7 =5+7

-3x = 12

x = -4

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42/4 as a whole or mixed number and in simplified form
AlekseyPX

Answer:

10.5

Step-by-step explanation:

42/4 can be reduced by dividing numerator and denominator by 2:  21/2.

This is an improper fraction.  One way to obtain the equivalent mixed number would be to multiply numerator and denominator of 21/2 by 5, obtaining 105/10, which reuces to 10.5.

We could also divide 42 by 4 in the usual way, obtaining 10.5.

6 0
3 years ago
You get tired of the sand and head up to the amusement park. You can purchase 20 ride tickets for $14 or you can purchase 30 rid
Helga [31]

Answer:

The one with the better deal would be 30 ride tickets for $22.50 this is because you pay less money for more rides.

Step-by-step explanation:

First you divide 20 by 14. Doing this will give you the cost of a ride per ticket.

20/14 = 1.42

Then you do the same thing to 30 and 22.50.

30/22.50 = 1.30

Last you compare which deal has less money per ride.

1.42 > 1.30

5 0
3 years ago
A geologist has two rocks on a scale that weighs 2 1/2 pounds together rock A was 1/7 of the total weight. How much did rock A w
jarptica [38.1K]
5/14 is the answer. I'll do my best bud
Answer↑

Steps↓
Convert 2 1/2 to an improper fraction:
2 + 2+ 1 over 2

Once you add the numbers, that will be 5/2.

Now, multiply that with 1/7:
5/2 • 1/7

Your answer will be 5/14

Therefore, Rock A weighs 5/14 pounds
7 0
2 years ago
Evaluate 5! + 2!.<br> Idk what is it
Sedbober [7]

Answer:

122

Step-by-step explanation:

If a number has an explanation point on the side of it, you should multiply all numbers that are equal to are less than that number.

5!=5*4*3*2*1=120\\2!=2*1=2\\120+2=122

4 0
3 years ago
Ezekiel bought a 18 ounce box of chocolate for $6.50. What was the cost per ounce? in a explanation order
vivado [14]

Answer:0.36

Step-by-step explanation:

You divide 18 by 6.50, that give you the cost per ounce

7 0
3 years ago
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