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Soloha48 [4]
3 years ago
14

3. Put your straightedge along this line. Draw this line as long as you can.

Mathematics
1 answer:
GrogVix [38]3 years ago
7 0

The answer is 26 trust me I will be ur friend

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Given that 7x – 2y = 30
weeeeeb [17]

Answer:

x=32/7

Step-by-step explanation:

7x-2(1)=30  Plug in 1 as y and simplify.

7x-2=30     Add 2 on both sides of the equation.

  <u>+2 +2</u>

7x=32         Divide both sides of the equation by 7.

<u>/7   /7</u>

x=32/7

Hope this helps...have an amazing day (。・∀・)ノ゙

8 0
3 years ago
Multiply.write product as a mixed number.
MakcuM [25]

Answer: 12x5

Step-by-step explanation:

2 =1 5= 12x5

7 0
3 years ago
The wings of a ruby-throated hummingbird beat an average of 52 times per second. About how many times will it's wings beat in on
tangare [24]

Answer:

3120

Step-by-step explanation:

Multiply 52 by 60 and it equals 3120

6 0
3 years ago
Tyrees purchase a container of juice that contains 220 cal the label says the 60% of the calories are from carbohydrates how man
kifflom [539]
Steps:
1. Do a proportion
X/220=60/100
2. Do 60 times 220 which equals 13,200
3. Do 13,200 divided by 100 which equals 132
4. 132 is how many are carbohydrates
5. Do 220 - 132= 88
6. Your answer is 88
4 0
3 years ago
The half life of uranium-232 is 68.9 years. (show step by step)
dalvyx [7]

Answer:

1.) 8.09g ; 2) 206.7 years

Step-by-step explanation:

Given the following :

Half-life(t1/2) of Uranium-232 = 68.9 years

a) If you have a 100 gram sample, how much would be left after 250 years?

Initial quantity (No) = 100g

Time elapsed (t) = 250 years

Find the quantity of substance remaining (N(t))

Recall :

N(t) = No(0.5)^(t/t1/2)

N(250) = 100(0.5)^(250/68.9)

N(250) = 100(0.5)^3.6284470

N(250) = 100 × 0.0808590

= 8.0859045

= 8.09g

2) If you have a 100 gram sample, how long would it take for there to be 12.5 grams remaining?

Using the relation :

N / No = (1/2)^n

Where N = Amount of remaining or left

No = Original quantity

n = number of half-lifes

N = 12.5g ; No = 100g

12.5 / 100 = (1/2)^n

0.125 = (1/2)^n

Converting 0.125 to fraction

(1/8) = 1/2^n

8 = 2^n

2^3 = 2^n

n = 3

Recall ;

Number of half life's (n) = t / t1/2

t = time elapsed ; t1/2 = half life

3 = t / 68.9

t = 3 × 68.9

t = 206.7 years

7 0
3 years ago
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