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Westkost [7]
3 years ago
8

Select the correct answer from each drop down menu.

Mathematics
1 answer:
Gnom [1K]3 years ago
7 0

Answer:

(A) \text{The slope of OA is }\dfrac{4}{3}

(C) It’s equation is 4x-3y=0.

Step-by-step explanation:

Point O is at (0,0)

Point A is at (3,4)

\text{Slope of OA}=\dfrac{4-0}{3-0} \\m=\dfrac{4}{3}

The equation of a straight line is in the form: y=mx+b

The y-intercept of the line OA=0

Therefore, we have:

y=\dfrac{4}{3}x+0\\3y=4x+0\\$Subtract 3y from both sides$\\4x-3y=0

The equation of the line is: 4x-3y=0

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3 years ago
Help me substitution method define variables
Rina8888 [55]
\left \{ {{S=14+L} (I) \atop {S+L=124}(II)} \right.

<span>Substitute (I) into (II), we have:
</span>S+L=124
(14+L)+L=124
14 + 2L = 124
2L = 124 - 14
2L = 110
L =  \frac{110}{2}
\boxed{L = 55}

<span>Replace (II) in (I), we have:
</span>S=14+L
S = 14+ 55
\boxed{S = 69}

Answer:
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Step-by-step explanation:

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7 0
3 years ago
Ella is a landscape photographer. One weekend at her gallery she sells a total of 52 prints for a total of $2,975. A small paint
rosijanka [135]
<h2>Answer:37 paintings of $50 and 15 paintings of $75</h2>

Step-by-step explanation:

Let x be the number of paintings Ella sells for $50.

Let y be the number of paintings Ella sells for $75.

Profit made through $50 paintings is 50x

Profit made through $75 paintings is 75y

So,total profit is given by 50x+75y

It is given that total profit is $2975

So,50x+75y=2975      ..(i)

Given that the total number of prints is 52

So,x+y=52      ..(ii)

using (i) and (ii),

50x+75(52-x)=2975\\50x+3900-75x=2975\\25x=925\\x=37

y=52-x=52-37=15

7 0
3 years ago
Read 2 more answers
I need to know if A and C is right or not and i need help with B
mote1985 [20]
B: enclosing rectangle is 9×6=54. Then subtract 2 triangles tha together are 6x7=42. 54-43=12.

C. seems to me just 6x4=24.
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3 years ago
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