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k0ka [10]
3 years ago
8

What is the value of y when y = 4x - 1 and x = 7/2

Mathematics
1 answer:
babunello [35]3 years ago
7 0
The answer to y= 4x- 1 is 13. substitute 7/2 at x and do 4 times 7/2 minus 1.
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Solve the equation for y 2y -25 =19​
liraira [26]

Answer:

y=22

Step-by-step explanation:

2y-25=19

1) Add 25 to both sides:

2y-25+25=19+25

2y=44

2) Divide both sides by 2:

2y=44

y=22

4 0
3 years ago
Read 2 more answers
Please help me solve this
dalvyx [7]

Answer:

each \: ribeye \: costs \:  \boxed{(r) \to \: \$23.3664} ......................... .. \\  each \: grilled \:  salmon \:  dinners \: costs \:  \boxed{(r) \to \:  \$18.29912}

Step-by-step explanation:

let \: ribeye \: be \to \: (r).......................... \\ let \: grilled  \: salmon \:  dinners \: be \to \: (g) \\  \tt{hence}  \to\\ (5) \times  17r + 10g =  \$580.22 \\(10)  \times 21r + 5g =  \$582.19 \\  \to \\ (85r + 50g = 2,901.1) \\  - (minus)\\  (210r + 50g =5,821.9 ) \\  - 125r =  - 2,920.8 \\ r =  \frac{ -2,920.8 }{ - 125}  \\  \boxed{r = \$23.3664} \\  \tt{hence}  \to\\17r + 10g =  \$580.22 \\ 17(23.3664) + 10g =  \$580.22 \\1 0g = \$580.22 - \$397.2288 \\ 10g = \$182.9912 \\ g =  \frac{\$182.9912}{10}  \\  \boxed{g = \$18.29912}

3 0
3 years ago
The cost of a pair of ice skates went from $200 to $140. What is the percent change in the cost of skates?
dmitriy555 [2]

so the pair went down from 200 to 140, so the difference is 200 - 140 = 60.

so if we take 200 as the 100%, what is 60 off of it in percentage?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 200&100\\ 60&x \end{array}\implies \cfrac{200}{60}=\cfrac{100}{x}\implies \cfrac{10}{3}=\cfrac{100}{x}\implies 10x=300 \\\\\\ x = \cfrac{300}{10}\implies x = 30

3 0
3 years ago
Could someone please help me? Find the domain and range of the graph
Elan Coil [88]

Answer:

C = D all real Numbers ; R y>= -2

Step-by-step explanation:

for discover the domain we have to look the x axis and check for what x the graph exist. If we look this graph we can see that there are two solid lines.

the two arrows indicate that the graph continues both to left and to the right

so the domain is all real numbers

for the range we have to check the y axis. If we look at the graph we can see that under -2 there is nothing, while up -2 the graph continues to raise,

so the range is y>= -2

so the final answer is C

5 0
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solmaris [256]
This algebra 1 solving inequalities right?
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