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Pachacha [2.7K]
3 years ago
12

What is the value of b in this problem (-7)+b=(-8)

Mathematics
2 answers:
ss7ja [257]3 years ago
8 0

Answer:

-1

Step-by-step explanation:

-7+b=-8

Add 7 to -8 which would then get -1

seraphim [82]3 years ago
4 0

Good evening ,

______

Answer:

b = -1.

___________________

Step-by-step explanation:

(-7)+b=(-8) ⇔ 7+ (-7) + b = 7 + (-8) ⇔ b = 7 - 8 ⇔ b = -(8-7) ⇔ b = -(1)

:)

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9 weeks and 5 days<br> - 1 week and 6 days<br> ------------------------------
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Answer:

55 days or about 7 weeks

Step-by-step explanation:

9(7)= 63              because there are 7 days in one week

63+5=<u><em>68</em></u>

1(7)=7

7+6=<u><em>13</em></u>

68-13=55

6 0
4 years ago
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I need help with 4 and 5 what are the answers?
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Answer:

4. U = 54

5. C=80

Step-by-step explanation:

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7 0
3 years ago
What expression does -5c=
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5 0
4 years ago
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8 0
3 years ago
A state park charges an entrance fee based on the number of people in a vehicle. A car containing 2 people is charged $14, a car
Artyom0805 [142]

Answer:

Therefore $98 is be charged a bus containing 30 people.

Step-by-step explanation:

Given that,

A state park charges an entrance fee based on the number of people in vehicle.

Let the entry fee for the vehicle be E and entry fee for each person be x.

Then

C= E+(P×x)

C= Total charge in $

E= entry fee for a vehicle

P=No. of person

x= Entry charge per person.

Given A car containing 2 people charged $14

C=$14, P=2

∴14= E+(2× x)

⇒E+2x=14.....(1)

Again A car containing 4 people charged $20

C=$20, P=4

∴20= E+(4× x)

⇒E+4x=20.....(2)

Subtract (1) from (2), we get

E+4x-(E+2x)= 20-14

⇒E+4x-E-2x=6

⇒2x=6

⇒x=3

Putting the value of x in equation (1)

E+(2×3)=14

⇒E=14-6

⇒E=8

Therefore E=$8 and x=$3

Next we check whether our assumption is correct or wrong. Putting the value of E and x for third case

Here P= 8

Therefore C= E+(P×x)

                    = 8+(8× 3)

                    =8+24

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Therefore our assumption is correct.

Now C=? , P= 30

The charged for the 30 people is

C= $[8+(30×3)]

  =$[8+90]

 =$98

Therefore $98 is be charged a bus containing 30 people.

4 0
3 years ago
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