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Dovator [93]
3 years ago
12

Can sumone help me #11

Mathematics
1 answer:
Maru [420]3 years ago
5 0

Answer:

25$ per month

Step-by-step explanation:

100$ was saved every 4 months so you divide that by four. You will get 25 which is your rate. (25$ per month)

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find the area of the isocele triangle formed by the points of intersection of parabolas y=-x^2+9 and y=2x^2-3 and the origin
leonid [27]

Answer:

10\ \text{sq. units}

Step-by-step explanation:

The parabola's are

y=-x^2+9

y=2x^2-3

So

-x^2+9=2x^2-3\\\Rightarrow 12=3x^2\\\Rightarrow \\\Rightarrow x=\sqrt{\dfrac{12}{3}}\\\Rightarrow x=\pm 2

y=-x^2+9=-(2)^2+9\\\Rightarrow y=5

y=-(-2)^2+9=5

So, the points at which the parabola's intersect each other is (2,5) and (-2,5)

The three points of the triangle are (2,5), (-2,5) and (0,0)

Area of a triangle is given by

A=\dfrac{1}{2}[x_1(y_2-y_3) + x_2(y_3-y_1) + x_3(y_1-y_2)]\\\Rightarrow A=\dfrac{1}{2}[2(5-0)+(-2)(0-5)+0(5-5)]\\\Rightarrow A=10\ \text{sq. units}

Area of the triangle formed is 10\ \text{sq. units}.

3 0
3 years ago
Tracy buys 150 shares of upton group and 100 shares of whi health. what is tracy’s total investment?
Ivenika [448]
Tracy's total investment is... 4,940
5 0
4 years ago
Complete the steps to factor 56x2 – 8x – 7x + 1 by grouping.
konstantin123 [22]

The factorization of the polynomial 56x^2-8x-7x+1 is (8x-1)(7x-1)

Step-by-step explanation:

We need to Complete the steps to factor 56x^2-8x-7x+1 by grouping.

After grouping:

(56x^2-8x) + (-7x + 1)

Factor the GCF from each group.

8x(7x-1)-1(7x-1)\\

Use the distributive property.

(8x-1)(7x-1)

So, the factorization of the polynomial 56x^2-8x-7x+1 is (8x-1)(7x-1)

Keywords: factorization by grouping

Learn more about factorization by grouping at:

  • brainly.com/question/1464739
  • brainly.com/question/2568692
  • brainly.com/question/10771256

#learnwithBrainly

6 0
3 years ago
Read 2 more answers
Hmm, What is the answer?<br><br><br>PLEASE HELP ME!!!
Angelina_Jolie [31]

Answer:

y = kx.

Step-by-step explanation:

A proportional relationship between a quantity y and a quantity x that has a constant of proportionality k is represented by the equation y = kx.

4 0
2 years ago
Read 2 more answers
Please help me! Trying to understand!
Gwar [14]

Answer:

Area of triangle = 1/2 × base × height

Step-by-step explanation:

The two big traingles have same dimensions..

its height = 24ft

base=32 ft

so area of one big traingle = 1/2 × 32 × 24

= 384

similarly area of another big traingle = 384 as it has same dimensions.

now one small traingle... both have same dimension

its base =7

height=24

its area = 1/2 × 7 ×24

= 84

another small traingle area similarly = 84

Total area = 384+ 384 +84+ 84

=936 units ...

Thank you

Hope it helps you

4 0
3 years ago
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