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geniusboy [140]
3 years ago
15

Simplify the expression 1+4.25n+3/2p-3+(-2p)+5/4n

Mathematics
1 answer:
ale4655 [162]3 years ago
4 0

The answer is 5.5n-0.5p-4

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-3r + 18 = 15r please help!!
Luba_88 [7]

Answer:

r = 1

Step-by-step explanation:

Step 1: Write equation

-3r + 18 = 15r

Step 2: Solve for <em>r</em>

  1. Add 3r to both sides: 18 = 18r
  2. Divide both sides by 18: 1 = r
  3. Rewrite: r = 1

Step 3: Check

<em>Plug in r to verify it's a solution.</em>

-3(1) + 18 = 15(1)

-3 + 18 = 15

15 = 15

8 0
3 years ago
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The formula for the area of a triangle is A=bh/2. The area of a triangle is 26 cm squared and its base is 12cm. Using algrebra,
Fed [463]

Answer:

<em>4 and 1 / 3 cm</em>

Step-by-step explanation:

Consider the following;

A = 1 / 2 * Base * Height,\\26 cm^2 = 1 / 2 * ( 12 cm ) * Height

Let us say that Height = x. If that is so, through algebra, let us solve for x;

26 cm^2 = 1 / 2 * ( 12 cm ) * x,\\26 cm^2 = 6 cm * x,\\26 cm^2 / 6 cm = x,\\\\x = 26 cm^2 / 6 cm,\\x = 4 and 1 / 3\\\\Conclusion, Height = 4 and 1 / 3 ( cm )

<em>Solution ⇒ 4 and 1 / 3 cm</em>

8 0
3 years ago
Darcie wants to crochet a minimum of 3 blankets to donate to a homeless shelter. Darcie crochets at a rate of 1/15 ​ of a blanke
Gnesinka [82]

Answer:


Step-by-step explanation:

Given that Darcie wants to donate minimum 3 blankets to donate to a homeless shelter.  No of days left =60

No of days to complete one blanket = 1/(1/15) = 15 days

Hence in 60 days she has to complete ≥3 blankets

No of days she has to utilize for this will be ≥3(15)=45

No of days she can skip crocheting ≤15

Let x be the no of days crocheted and y no of days skipped

Then x+y≤60

See the graph attached as x axis for days crocheted and y for days skipped

No of blankets can be either 3 or 4.


4 0
3 years ago
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What is the vertex of the graph of the function f(x) = x2 + 8x - 2?
vlabodo [156]

Answer:

Vertex is (-4, -18)

Step-by-step explanation:

f(x) = ax^{2} +bx +c

Let (h, k) be the vertex

An easy way to find h is to use the formula h = -b/2a

In your case where f(x) = x^{2} +8x - 2   a = 2 and b = 8

So, h =  -8/2(1) = -8/2 = -4

Substitue -4 in for x to find k

k = (-4^{2}) + 8(-4) - 2

  = (16) - 32 - 2

  = 16 - 32 - 2

  = -18

Vertex is (-4, -18)

Note:  Another way to find the vertex is to complete the square, but this can really be difficult in some cases

5 0
3 years ago
What’s 1 divided by 3
irinina [24]

Answer:

0.3 (3 repeating)

Step-by-step explanation:

Hope this helps!!

4 0
3 years ago
Read 2 more answers
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