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yawa3891 [41]
3 years ago
15

ALGEBRA ONE URGENT HELP!!!!!!

Mathematics
1 answer:
makkiz [27]3 years ago
7 0
Half-life is a measure of how long it takes half of a given measurement of an isotope to be converted to another element. After one year, half of the isotope will be present. 
Year 1: 88/2 = 44g 
Year 2: 44/2 = 22g
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Write the equation of the line in slope-intercept form using y=mx+b​
AnnZ [28]
It looks like it goes through (0,-3) and (1,2), so the gradient is (change in y)/(change in x) ->
(-3-2)/(0-1) = 5
So y=5x+b

Then as we know it passes the y axis at (0,-3) so b= -3

So we have y=5x-3
3 0
3 years ago
Read 2 more answers
Iris wants to buy sneakers at $15 each and high heels at $30 each. Write an algebraic expression to find the total cost of the s
kogti [31]

Answer: 30y + 15x

If x is for sneakers, and y is for high heels, plug 15 in for a and 30 in for b. This means that x is how many sneakers she buys, and y is how many high heels she buys. The equation altogether represents the total amount of her purchases.

5 0
3 years ago
How many square feet of outdoor carpet will we need for this hole?
Mamont248 [21]

Answer:

The area of the outdoor carpet = 60 - 6 - 6 = 48 ft²

Step-by-step explanation:

The picture below is what you are referring to .

The whole area of the shape forms a rectangle. A triangle and a  rectangle has been cut off from the whole carpet rectangle. The square ft or area of the carpet is the subtraction of the area of the rectangle and triangle cut off from the whole area of the rectangle .

Area of the rectangle = Lb

where

L = 12 ft

b =  5 ft

area = 12 × 5  = 60 ft²

The cut off triangle area

area = 1/2 × base × height

area = 1/2 × 4 × 3

area = 12/2 = 6 ft²

The cut off rectangle area

area = Lb

area = 3 × 2

area = 6 ft²

The area of the outdoor carpet = 60 - 6 - 6 = 48 ft²

7 0
4 years ago
Find the least common multiple (LCM) of 6 and 10,<br> O A. 60<br> O B. 20<br> O C. 40<br> O D. 30
kolezko [41]
The answer is 30 I’m sure of it
4 0
3 years ago
Craig has a job waiting tables where he earns $3.15 per hour plus tips. Craig earned $74.67 in tips during his shift yesterday.
oksano4ka [1.4K]

Answer:

3.15x-79.48

i think c:

3 0
3 years ago
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