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Vika [28.1K]
3 years ago
9

I need help plez and thanks

Mathematics
2 answers:
erastova [34]3 years ago
8 0
It will take 3 hours.
slamgirl [31]3 years ago
4 0
I got 3 hours hope this helps
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The sum of two numbers is 52. One number is 3 times as large as the other number. Which is the larger number
creativ13 [48]

The two number are 39 and 13

<em><u>Solution:</u></em>

Let the two numbers be "a" and "b"

Let the larger number be "a" and the smaller number be "b"

<em><u>Given that, sum of two numbers is 52</u></em>

a + b = 52 ---------- eqn 1

<em><u>One number is 3 times as large as the other number</u></em>

Larger number = 3 times smaller number

a = 3b -------- eqn 2

<em><u>Let us solve eqn 1and eqn 2</u></em>

<em><u>Substitute eqn 2 in eqn 1</u></em>

3b + b = 52

4b = 52

b = 13

<em><u>Substitute b = 13 in eqn 2</u></em>

a = 3(13)

a = 39

Thus the two number are 39 and 13

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3 years ago
What is the answer to. Write a polynomial equation with integer coefficients that has the given roots, x=7 and x=-5
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\bf \begin{cases}&#10;x=7\implies &x-7=0\\&#10;x=-5\implies &x+5=0&#10;\end{cases}\implies (x-7)(x+5)=\stackrel{original}{polynomial}&#10;\\\\\\&#10;x^2-2x-35=y\implies 1x^2-2x-35=y
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3 years ago
What's the area of this triangle
Luda [366]

Answer:

D      A = (1/2) (y₂ - y₁)(x₃ - x₁)

Step-by-step explanation:

b = (y₂ - y₁)

h = (x₃ - x₁)

A = (1/2)bh

A = (1/2) (y₂ - y₁)(x₃ - x₁)

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almond37 [142]

The answer is D, (1/3, 4).

Hope this helped!


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brilliants [131]

Answer:

Independent-samples t-test.

Step-by-step explanation:

We are looking for the appropriate design for testing the significance of the difference between the means.

Now, there is a parametric test known as the Independent Samples t Test and what this test does is that it compares the mean of two independent groups in order to find out whether there is statistical evidence that the related population mean is significantly different.

Thus, the test to be used here is Independent-samples t-test.

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3 years ago
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