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True [87]
3 years ago
8

The temperature is 45degrees. the temp will decrease by 2f each hour. let h be the number of hours.

Mathematics
1 answer:
Anton [14]3 years ago
4 0

what do you believe this answer is

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Solve this pair of simultaneous equations.<br> 5x + 2y = 20<br> x + 4y = 13<br> X=<br> y=
Katena32 [7]

Answer:

y= 2.5

x= 3

Step-by-step explanation:

multiply eqn 2 by 5

5x +20y =65

eqn 2 -1

20-2)y=65-20

18y=45

y=2.5

x+4×2.5 =13

x+10=13

x=3

8 0
3 years ago
Read 2 more answers
Tell whether the angle measures can be those of a triangle.
babunello [35]

No.

The 3 angles of a triangle need to equal 180 degrees.

The sum of the 3 given angles is greater than 180 ( 160 + 20 + 20 = 200) so it cannot form a triangle.

5 0
3 years ago
Transform the equation to isolate x: ax = bx + 1. How is
shepuryov [24]

Answer:

x=\frac{1}{a-b}

The value of x is inversely proportional to the difference of <em>a</em> and <em>b</em>.

Step-by-step explanation:

The given expression is ax-bx+1

We factor the left hand side to get:

(a-b)x=1

We divide both sides by: a-b

x=\frac{1}{a-b}

Observe that the difference of a and b is in the denominator.

The whole is of the form: x\propto \frac{1}{a-b}

The value of x is inversely proportional to the difference of <em>a</em> and <em>b</em>.

6 0
3 years ago
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Derek is planning on covering an entire drum in leather. The diameter of the drum is 10 inches, and the height of the drum is 16
fredd [130]

Answer: 694.4 in^2

Step-by-step explanation:

We have a cylinder with:

diameter = d = 10 inches

heigth = h = 16 inches.

The total surface of a cylinder is equal to:

S = h*2*pi*(d/2) + 2*pi*(d/2)^2

we can replace the numbers and get:

S = 16*2*3.14*(10/2) + 2*3.14*(10/2)^2 = 659.4 inches squared

5 0
3 years ago
Help!!! Please will give points
galben [10]

Option D:

The solution to the equation is y = 27.

Solution:

Given equation:

$\frac{1}{3} y=9

To solve this equation:

$\frac{1}{3} y=9

Multiply by 3 on both sides of the equation.

$3 \times \frac{1}{3} y=9 \times 3

3 in the numerator and denominator get canceled.

y = 9 × 3

y = 27

The solution to the equation is y = 27.

Option D is the correct answer.

3 0
3 years ago
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