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olga55 [171]
3 years ago
12

Someone plz help me with #9

Mathematics
1 answer:
prohojiy [21]3 years ago
5 0
Use the point-slope formula y-y1=m(x-x1) to find the equation of the line. 

Equation: y= 1/2x+5/2 
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If the mass of a proton is 2.34 × 10–14 grams, what is the mass of 1,000 protons?
Alex17521 [72]
Masse of 1 proton: = 2.34 x 10⁻¹⁴

masse of 1000 protons = 2.34 x 10⁻¹⁴ x 1000 or 2.34 x 10 ⁻¹⁴ x 10³ =2.34 x 10⁻¹¹
8 0
3 years ago
Someone please help me.
Sonja [21]

Answer:

EBCG

Step-by-step explanation:

1) 50 - 87 = 23

2) 12 - 24= 288

3) 38.25 + 11.75= 50

4) 7 divided by 168= 24

5 0
2 years ago
Chicago Pizza charges $10.49 for a medium 14" pepperoni pizza and NY Pizza charges $20.99 for an x-large 18" pepperoni pizza.
UNO [17]

Answer:

A; The cost is $0.07 per  inch^{2}

Step-by-step explanation:

In this question, we are asked to calculate the cost of the Chicago pizza per square inch rounded to the nearest cent.

Firstly, we will need to calculate the area occupied by the 14 inch medium pepperoni pizza made by Chicago pizza

Since the pizza is circular in shape, we use the formula for the area of a circle to calculate its area in square inch

Mathematically, the area of a circle is equal to πr^{2} . Here, our r is half the size of the pizza as the 14 inch represents the full length of the pizza across the center of the pizza = 7 inch

The area is thus = 22/7 × 7 × 7 = 154 inch^{2}

Now, since the full pizza costs $10.49, the cost of the pizza per  inch^{2} is 10.49/154 = 0.068 = $0.07 per  inch^{2}

8 0
2 years ago
What % of $30 is $21?
Black_prince [1.1K]

Answer:

70

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Arie ran an equal number of miles each day for 12 days. He ran 60 miles in total.
Nezavi [6.7K]

Answer:

5 miles/day

Step-by-step explanation:

This is a division problem.

(60 miles)/(12 days) = 5 miles/day

7 0
3 years ago
Read 2 more answers
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