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Alika [10]
3 years ago
5

I don’t really get how to solve 5-7

Mathematics
1 answer:
miss Akunina [59]3 years ago
3 0
Think of a number line
5-5= 0
0-the extra 2 =-2
so the answer is -2
hope this helps
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It cost $0.10 per coppy. stacy needs 257 coppies. hiw much much money does stacy need
ipn [44]
1 copy = $0.10

247 copies = $0.10 x 247 = $24.70

Answer: $24.70
7 0
3 years ago
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How do you factor 6x2 + 11x + 3
REY [17]

Answer:

(3x + 1) (2x + 3)

These are the factors of 6x2 + 11x + 3

Step-by-step explanation:

Math Term Definition. Factor. To factor a number means to break it up into numbers that can be multiplied together to get the original number. EXAMPLES: 6 = 3 x 2 so, factors of 6 are 3 and 2 9 = 3 x 3 so, factors of 9 are 3 and 3 Sometimes, numbers can be factored into different combinations.

3 0
3 years ago
A bag contains 10 marbles: 2 are green, 6 are red and 2 are blue. Chau choose a marble at random, and without putting it back ch
masha68 [24]
The answer is 2/90

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Hope this helps :)
6 0
3 years ago
X over 45 - 7 over 9. X = ?
Degger [83]

Answer:

X=35

Step-by-step explanation:

simplify 7/9

x/45-7/9=0

simplify x/45

x - (7 • 5)/45=  x - 35/45

x-35/45=0

add 35  to both sides

x=35

I tried it's hard to write it all out on here i just to give u the best sorry :)

7 0
4 years ago
The length of a violin string varies inversely with the frequency of its vibrations. A violin string 14 inches long vibrates at
lara31 [8.8K]

Answer: 525 cycles per second.

Step-by-step explanation:

The equation for inverse variation between x and y is given by :-

x_1y_1=x_2y_2       (1)

Given : The length of a violin string varies inversely with the frequency of its vibrations.

A violin string 14 inches long vibrates at a frequency of 450 cycles per second.

Let x =  length of a violin

y=  frequency of its vibrations

To find: The frequency of a 12 inch violin string.

Put x_1=14,\ x_2=12\\y_1=450,\ y_2=y in equation (1) , we get

(14)(450)=(12)(y)  

Divide both sides by 12 , we get

y=\dfrac{(14)(450)}{12}=525

Hence, the frequency of a 12 inch violin string = 525 cycles per second.

3 0
3 years ago
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