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iris [78.8K]
3 years ago
15

PLEASE HELP!!!! I WILL GIVE BRAINLIEST TO THE FIRST ANSWER!!!

Mathematics
2 answers:
Gekata [30.6K]3 years ago
6 0

Answer:

1. 8

2. 10

3. 3000

4. 1440

5. 25

FinnZ [79.3K]3 years ago
4 0
12 is 150% of what number?
answer- 8
5 is 50% of what number?
answer- 1000
10%of what number is 300?
answer- 3000
5% of what number is 72?
answer- 1440
20 is 80% of what number?
answer- 25
You might be interested in
What's additive inverse? Like for example this expression 2-16 what's the additive inverse??
Stels [109]

Answer: The multiplicative inverse is 1/2 the addition inverse is -2

Step-by-step explanation:

Since the inverse of multiplication is division, use a fraction. The inverse of addition is subtraction.

4 0
2 years ago
Read 2 more answers
See attached picture.
Andrei [34K]

Answer:

28

Step-by-step explanation:

Since the triangle is a right triangle, we can use SOH CAH TOA to find ?. 10 is OPPOSITE to ? and 21 is HYPOTENUSE to ?, so we can use SIN to find ?.


SIN(?) = 10/21

? = ARCSIN(10/21)

? = 28.437

5 0
1 year ago
15 is 30% of what number?
777dan777 [17]
15 is 30% of 50 

Change the percentage to a decimal by dividing it over 100:
\frac{30}{100} = 0.3

Divide 15 over 0.3:
\frac{15}{0.3} = 50

3 0
3 years ago
Read 2 more answers
A rectangular prism has a length of 6 meters, a height of 8 meters, and a width of 5
kati45 [8]
Heyo just a freshman answering your question. To find the volume of a rectangular prism is by using its volume formula, vol=length*width*height. Your answer is 240 meter^3
6 0
2 years ago
Now there is a square city of unknown size with a gate at the center of each side. There is a tree 20 b from the north gate. Tha
Brums [2.3K]

Answer:

The length of each side of the city is 250b

Step-by-step explanation:

Given

a = 20 --- tree distance from north gate

b =14 --- movement from south gate

c = 1775 --- movement in west direction from (b)

See attachment for illustration

Required

Find x

To do this, we have:

\triangle ADE \sim \triangle ACB --- similar triangles

So, we have the following equivalent ratios

AE:DE = AB:CB

Where:

AE = 20\\ DE = x/2 \\ AB = 20 + x + 14 \\ CB = 1775

Substitute these in the above equation

20:x/2 = 20 + x + 14: 1775

20:x/2 = x + 34: 1775

Express as fraction

\frac{20}{x/2} = \frac{x + 34}{1775}

\frac{40}{x} = \frac{x + 34}{1775}

Cross multiply

x *(x + 34) = 1775 * 40

Open bracket

x^2 + 34x = 71000

Rewrite as:

x^2 + 34x - 71000 = 0

Expand

x^2 + 284x -250x - 71000 = 0

Factorize

x(x + 284) -250(x + 284)= 0

Factor out x + 284

(x - 250)(x + 284)= 0

Split

x - 250 = 0 \ or\ x + 284= 0

Solve for x

x = 250 \ or\ x =- 284

x can't be negative;

So:

x = 250

6 0
3 years ago
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