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Stolb23 [73]
3 years ago
13

Which expressions are equivalent to 7-2 x 76?

Mathematics
1 answer:
Lilit [14]3 years ago
7 0
-145 that is the answer I think
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Help me solve this problem.
irina [24]

We can write an equation to resemble the problem.

1160 = 170 + 50x

x equals the number of boxes he is carrying.

Solve for x.

1160 = 170 + 50x

990 = 50x

19.8 = x

We can't round up because that will be to much weight. So, we are going to round down.

19.8 -> 19

Therefore, the answer is 19.

Best of Luck!

6 0
3 years ago
Read 2 more answers
Does anyone know how to find the area of the shaded region?
Rzqust [24]
Find the area of the rectangle with the circles. Then find the area of each of the circles and add them together and minus that from the rectangle’s area.

A of rectangle = 30x10 = 300
A of circle = pi x r squared = pi x 25
A of shaded region = 300 - 75 pi = 68.3805cm square
6 0
4 years ago
Find the surface area and volume of cone. A = rs + r2 V = 1/3r2 h A cone's slant height (s) is 15 cm and its radius is 8 cm. Sur
Setler [38]

Answer:

<h2>a) 483.6cm²</h2><h2>b) 850.1 cm³</h2>

Step-by-step explanation:

Given the slant height 's' and its radius 'r' to be 15cm and 8cm respectively.

the total surface of the cone A = πrs+πr² and the volume is expressed as

V = 1/3πr²h

For the surface area of the cone;

Given parameters

radius = 8 cm and slant height s = 15 cm

Total surface area A = π(8)(15) + π(8)²

A = 90π+64π

A = 154π

If π = 3.14

A = 154(3.14)

A = 483.56cm²

A = 483.6cm²

Hence the total surface area of the cone to the nearest tenth is 483.6cm²

For the volume of the cone;

V = 1/3πr²h

Using pythagoras theorem to get the height of the cone;

l² = h²+r²

h² = l²-r²

h² = 15²-8²

h² = 225-64

h² = 161

h = √161

h = 12.69cm

V = 1/3π* (8)² * 12.69

V =  1/3π* 64 * 12.69

V =  1/3*3.14* 64 * 12.69

V = 2550.1824/3

V = 850.06 cm³

V = 850.1 cm³

Hence, the volume of the cone is  850.1 cm³ to the nearest tenth.

7 0
3 years ago
Which Password is "safer?" A password made up of a five letter word, or a password made up of a seven digit number? Why?
qaws [65]

Answer:

nether

Step-by-step explanation:

Why well because a good password is like (fake password) goodbuddy74593noice. hard right a good password is numbers AND words

thats a good password.

7 0
3 years ago
Issac had 25$ now he has 32$.By what percentage of increase does Issac have?​
Anarel [89]

Answer:

i think it is increase by 28%

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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