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Norma-Jean [14]
3 years ago
13

The product of a number and 4 increased by 7 is 5. What is the number?

Mathematics
1 answer:
yanalaym [24]3 years ago
6 0

Answer: x = -1/2 = -0.5

Step-by-step explanation:

set up an equation

4x + 7 = 5 subtract 7 from both sides

4x = - 2 divide both sides by 4

x = -2/4

x = -1/2 = -0.5

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Additive inverse of −2, additive identity of −5, additive inverse of 3, multiplicative identity of 19, and multiplicative invers
monitta

Answer:

See Explanation

Step-by-step explanation:

a) Additive inverse of −2

  • the additive inverse of a number a is the number that, when added to 'a', yields zero. This number is also known as the opposite (number), sign change, and negation.
  • So the Additive inverse of -2 is 2. ∴ -2+2=0

b) Additive identity of −5

  • Additive identity is the value when added to a number, results in the original number. When we add 0 to any real number, we get the same real number.
  • -5 + 0 = -5. Therefore, 0 is the additive identity of any real number.

c) additive inverse of 3

  • Two numbers are additive inverses if they add to give a sum of zero. 3 and -3 are additive inverses since 3 + (-3) = 0. -3 is the additive inverse of 3.

d). multiplicative identity of 19

  • an identity element (such as 1 in the group of rational numbers without 0) that in a given mathematical system leaves unchanged any element by which it is multiplied
  • Multiplicative identity if 19 is 1 only, since 19 x 1 = 19.

e) multiplicative inverse of 7

  • Dividing by a number is equivalent to multiplying by the reciprocal of the number. Thus, 7 ÷7=7 × 1⁄7 =1. Here, 1⁄7 is called the multiplicative inverse of 7.

d)  | 11-5|×|1-5|

  • | 11-5|×|1-5| ⇒ I6I×I-4I ⇒ 6×4 ⇒ 24

8 0
3 years ago
IT COST $9 TO GO TO PETE'S POTTERY PLACE TO MAKE YOUR OWN BOWLS $3 PER BOWL. NATALIE GOES TO PETE'S POTTERY PLACE AND MAKES B BO
S_A_V [24]
C= 5(9*3b)
C= 5(9*12)
C= 5(108)
C=540
8 0
3 years ago
What are the steps for solving, 7,542÷3
valina [46]

Answer:

2514

Step-by-step explanation:

Do the long division and you'll find the answer.

8 0
3 years ago
An aquarium holds 56. 25 gallons of water. It has a length of 2 feet and a height of 2. 5 feet. What is the volume of the aquari
GaryK [48]
Wouldn’t it just be 56.25 bc it holds that much bc v=l x w x h and there is no height
6 0
2 years ago
Help pleaseeeeeeeee;)))))))))Please someone help
allochka39001 [22]

Answer:

A. 50.24‬in

B. 200.96 square inches

C. $36.17

Step-by-step explanation:

A. C=2πr

2*3.14*8= 50.24‬

B. A=πr^2

3.14*8^2= 200.96

C.

200.96*0.18=36.1728‬

Rounded= $36.17

Please mark brainliest! :)

6 0
3 years ago
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