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3 years ago

The middle one, i need help. i’m at a 71 in math. please?

Mathematics

2 answers:

Fed [463]3 years ago

8 0

Answer:

33C

Step-by-step explanation:

max temp = 23 above zero = +23C

min temp = 10 below zero = -10C

max temp - min temp = 23 - (-10) = 33C

o-na [289]3 years ago

6 0

Answer:

The answer is D. 33C.

Step-by-step explanation:

The highest temperature is given to be 23 degree above Celsius.

The lowest temperature is given to be 10 degree below Celsius.

The difference between the two = 23 - (-10)

= 23 + 10

= 33 degree C

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Two sides of a triangle

True [87]

step 1: open brackets n rmb to flip the signs

step 2 (optional): rearrange to make the equation clearer to add/minus

length of 3rd side:

(8x + 3) - (2x + 1) -(5x + 2)

= 8x + 3 - 2x -1 - 5x -2

= 8x -2x -5x +3 -1 -2

= x

Therefore, length of 3rd side is X cm.

---

If perimeter = 75cm,

8x +3 = 75

8x = 75-3

8x = 72

x = 9 cm

Therefore,

1st side = 2(9) +1

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2nd side = 5(9) +2

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3 years ago

The circle passes through the point (-1,-6). What is its radius?

nadya68 [22]

Answer:

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Step-by-step explanation:

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3 years ago

What is the slope of a line that passes through the points (-5,-3) and (9,-6)

kipiarov [429]

To find the slope given two points, you need to subtract the two y values over the two x values
(-5,-3) (9,-6)
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y2-y1 -6-(-3) -9
-------- = -------- = ----
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Now that we have the slope (-9/14) you can use one of the coordinates to find the value of b.
Let's use (9,-6).
-6=-9/14(9)+b
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Your final equation is y=-9/15x-3/14

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3 years ago

What is the solution to the system of equations?<br><br> 6x – 9y = 16<br><br> 2x – 3y = 7

kifflom [539]

The first step for solving this problem is to multiply both sides of the bottom equation by -3.
$\left \{ {{6x-9y=16} \atop {-6x + 9y = -21}} \right.$
Add the two equations together.
6x - 9y - 6x + 9y = 16 - 21
Eliminate the opposites.
-9y + 9y = 16 - 21
Remember that the sum of two opposites equals 0,, so the equation becomes the following:
0 = 16 - 21
Calculate the difference on the right side of the equation.
0 = -5
This means that the statement $\left \{ {{6x-9y=16} \atop {2x-3y=7}} \right.$ is false for any value of x and y. That means that the answer to your question is (x,y) ∈ ∅,, or no solution.
Let me know if you have any further questions.
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3 years ago

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