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2 years ago

The sum of a certain number and -3.4 is -8.1 find the number

Mathematics

2 answers:

pentagon [3]2 years ago

6 0

Answer:

-4.7

Step-by-step explanation:

-8.1 + -3.4 = -4.7

This works because - and + are inverse operations, so you can use + to help find a - problem or see if it's correct, or vise versa.

alexira [117]2 years ago

5 0

Answer:

4.7

Step-by-step explanation:

If you use the rules of the signs to eliminate the minuses and then substract 8.1 from 3.4 you get 4.7 which, if you sum it with 3.4 gives 8.1

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Three consecutive integers whose sum is 363.

Alex777 [14]

Answer: 120,131,122
Your three integers are x, x+1, and x+2
x+x+1+x+2=363
3x+3=363
3x=360
x=120
x+1=121
x+2=122

7 0

3 years ago

Read 2 more answers

12.41 less than the product of 42 and x

11Alexandr11 [23.1K]

12.41 less than the product of 42 and x

= 42x - 12.41

7 0

3 years ago

The sum of two number is 17. their driffrence is 27.write a system of equations that describe this situation. solve to find the

STatiana [176]

A) x + y = 17
B) x - y = 27
Adding both equations:2x = 44
x = 22
y = -5

6 0

3 years ago

Alexis has $22 75 to spend at the movies she buys a ticket for $8.500 a popcorn for $725 and a candy bar for $5 how much money d

vaieri [72.5K]

Answer:

$2.00

Step-by-step explanation:

Alexis spends:

$8.50 + $7.25 + $5 = $20.75

Money left:

$22.75 - $20.75 = $2.00

6 0

3 years ago

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Find the volume of a cylinder below . The formula for the volume of a cylinder is . The radius of the circle is represented by r

lapo4ka [179]

Answer:

The volume of the cylinder V = 942 cm³

Step-by-step explanation:

Step(i):-

Given that the graph

The height of the cylinder (h) = 12cm

The diameter of the cylinder d = 10cm

The radius of the cylinder

d = 2r

r = $\frac{10}{2}$

r = 5 cm

Step(ii):-

The Volume of the cylinder

V = π r² h

V = π (5)²(12)

V = 300π cubic centimeter

V = 300 × 3.14

V = 942 cm³

Final answer:-

Volume of the cylinder V = 942 cm³

3 0

2 years ago

The sum of a certain number and -3.4 is -8.1 find the number​

The sum of a certain number and -3.4 is -8.1 find the number