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I am Lyosha [343]
3 years ago
8

Need help WILL MARK BRAINLIEST

Mathematics
2 answers:
In-s [12.5K]3 years ago
6 0
The 3rd 1 am not sure though
ddd [48]3 years ago
3 0
Pretty sure it’s the third one
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What is the answer to y= 4x + 11
Vitek1552 [10]
Hope it helps you !!!!!!! And if you want the step I will show you

5 0
3 years ago
Kelvin plans to buy potato chips and coke with $50. If he buys 3 packs of potato chips and 2 cans of coke, $9 will be left. If h
Delicious77 [7]
Let the prices of a pack of potato chips and can of coke be x and y respectively
3x+2y=50-9
3x+2y=41........... (1)
4x+5y=50+21
4x+5y=71............(2)
Multiply (1) with 4 and (2) with3
12x+8y=164
12x+15y=213
On subtracting above eqs. we get
7y= 49
y=7
Putting value of y in (2)
4x+5(7)=71
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MARK IT BRANLIEST PLZZZ....

7 0
3 years ago
Read 2 more answers
At 7:00 a.m., Alicia pours a cup of tea whose temperature is 200°F. The tea starts
soldier1979 [14.2K]

Answer:

Step-by-step explanation:

Here we have the temperature variation with time given in an exponential equation as follows;

Let the temperature at time x (in minutes) = y

Therefore, y = a × mˣ + b

Where:

b = Shift of the curve or the limit value of the decreasing exponential function as x → ∞

When y = 200, x = 0

Therefore. 200 = a × m⁰ + c = a + c

We note that c is the shift of the graph, the value upon which temperature increases = final temperature = 72°F

Hence a = 200 - 72 = 128°F

When y = 197, x = 2 minutes

Therefore, 197 = 128·m² + 72 =

m² = (197 - 72)/128 = 125/128

m = √(125/128) = 0.98821

Hence the exponential equation of cooling is presented in the following equation;

y = 128 × (0.98821)ˣ + 72

Therefore, y = 128(0.989)x + 72

When the temperature is 172°F we have;

170 = 128 × (0.989)ˣ + 72

∴ (0.989)ˣ = (170 - 72)/128

= 98/128

= 0.7656

log(0.989)ˣ = log(0.7656)

x·log(0.989) = log(0.7656)

x = log(0.7656)/log(0.989)

= 24.15 minutes

5 0
3 years ago
Elizabeth has $35.50 to spend on Math tutoring. Each session costs $9 plus a one- time registration fee of $7.45. Let the variab
Valentin [98]

Answer:

2 tutoring sessions

Step-by-step explanation:

do 9 + 7.45 = 16.45 x 2 = 32.9. You can’t add another 16.45 otherwise it’d go over 35.50

8 0
3 years ago
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The graph of a line goes down and to the right when
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