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notka56 [123]
3 years ago
15

Solve by substitution the following problem please y=10.20x+2500

Mathematics
1 answer:
ziro4ka [17]3 years ago
7 0

Answer:

x=0.098039y−245.098039

Step-by-step explanation:

Let's solve for x.

y=10.2x+2500

Step 1: Flip the equation.

10.2x+2500=y

Step 2: Add -2500 to both sides.

10.2x+2500+−2500=y+−2500

10.2x=y−2500

Step 3: Divide both sides by 10.2.

10.2x

10.2

=

y−2500

10.2

x=0.098039y−245.098039

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on monday morning elijah opened a box of cereal and ate 1/8 of it and on tuesday he ate 1/6 how mutch is left
Nastasia [14]
How much cereal was in the box???
6 0
3 years ago
Line $1$ represents the graph of $3x + 4y = -14$. Line $2$ passes through the point $(-5,7)$, and is perpendicular to line $1$.
Sophie [7]

Answer:

15

Step-by-step explanation:

First, solve for Line 1

3x + 4y = -14

<em>move the x to the right of the equation</em>

4y = -3x - 14

<em>divide the whole equation by 4 </em>

y = -3/4x - 14/4

<u>Line 1 is y = -3/4x - 7/2 </u>

Then, solve for Line 2

Since Line 2 is perpendicular, change the sign of the slope of Line 1 and then get the reciprocal of that.

-3/4 to 3/4 to 4/3

4/3 is the slope of Line 2.

Now, we want to find what the b of the equation is, so we can plug in our x (-5) and our y (7) into the y=mx+b equation to find b. The 4/3 is the m or the slope.

y = mx + b

<em>plug in the y, m, and x into the equation</em>

7 = (4/3)(-5) + b

<em>multiply the m and x together </em>

7 = -20/3 + b

<em>add 20/3 to both sides so it will cancel out on the right of the equation and be added to the 7 on the left of the equation</em>

<u>41/3 = b </u>

So, m = 4/3 and b = 41/3

Add them together and you get 45/3 or 15.

I hope this helped!

8 0
3 years ago
Find an equation for the line that passes through the points (-4.-2) and (5,1)
skelet666 [1.2K]

Answer:

y= \frac{1}{3}x-\frac{2}{3}

Step-by-step explanation:

The first step to making an equation of a line is finding the slope. To do this, we can use the point slope formula: \frac{y_2-y_1}{x_2-x_1}

In this case,

y2=1

y1= -2

x2=5

x1= -4

plug this into the formula: \frac{1-(-2)}{5-(-4)}, which gives us 3/9, or 1/3 as the slope.

Now we have the equation y=1/3x+b. Let's find b! We can do this by plugging in one of the points into our new equation, let's use (5,1)

1=y, 5=x

1=\frac{1}{3}(5)+b

b= -\frac{2}{3}

now, we plug b= -2/3 into our equation, and we finally get y= \frac{1}{3}x-\frac{2}{3}

6 0
2 years ago
Can someone help me?
Sergio [31]

9514 1404 393

Answer:

  • tan B = 12/5
  • cos B = 5/13
  • sin B = 12/13

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the applicable ratios:

  Tan = Opposite/Adjacent   ⇒   tan B = CA/CB = 12/5

  Cos = Adjacent/Hypotenuse   ⇒   cos B = BC/BA = 5/13

  Sin = Opposite/Hypotenuse   ⇒   sin B = AC/AB = 12/13

3 0
3 years ago
In ΔPQR, p = 75 inches, q = 73 inches and r=35 inches. Find the measure of ∠P to the nearest 10th of a degree.
soldi70 [24.7K]

Answer:

79.5

Step-by-step explanation:

a^2 =b^2+ c^2-2bc cos A

cos p = 73^2+35^2-75^2/2(73)(35)

cos p= 9229/5110

cosp=79.5

3 0
2 years ago
Read 2 more answers
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