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3 years ago

Solve for x. - 1 2 (x + 5) = -10 A) -25 B) -10 C) 0 D) 15

Mathematics

1 answer:

Vadim26 [7]3 years ago

8 0

Answer:

Are you sure you typed that correctly? If so, please retype without spaces so I can see how it is typed, because I might be doing my math wrong...

Step-by-step explanation:

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What is the probability of getting at least three heads when flipping four coins?

umka21 [38]

0.25% chance of getting at least three heads out of four coin flips.

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3 years ago

In the morning, the temperature was – 10°C. By the afternoon, it had risen to – 2°C. What was the change in temperature from the

Sever21 [200]

Answer:

8 °C

Step-by-step explanation:

Step 1: Given data

Initial temperature value (T1): -10 °C

Final temperature value (T2): -2 °C

Step 2: Calculate the change in temperature from the morning to the afternoon

To calculate the change in the temperature, we have to perform the subtraction T2 - T1.

ΔT = T2 - T1 = (-2 °C) - (-10 °C) = -2 °C + 10 °C = 8 °C

The temperature change is positive, meaning that the temperature increased.

8 0

3 years ago

Help please!!!!!!!!!!!

julia-pushkina [17]

Answer:

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Step-by-step explanation:

7 0

3 years ago

Please help!! Solve the system using an augmented matrix. Show all work

marishachu [46]

Answer:

The solution of the system is: $x=2, y=5$

Step-by-step explanation:

The given system of equations is.......

$-x-3y=-17\\ \\ 2x-6y=-26$

So, the augmented matrix will be: $\left[\begin{array}{cccc}-1&-3&|&-17\\2&-6&|&-26\\\end{array}\right]$

Now, we will transform the augmented matrix to the reduced row echelon form using row operations.

Row operation 1 : Multiply the 1st row by -1. So..........

$\left[\begin{array}{cccc}1&3&|&17\\2&-6&|&-26\\\end{array}\right]$

Row operation 2: Add -2 times the 1st row to the 2nd row. So.......

$\left[\begin{array}{cccc}1&3&|&17\\0&-12&|&-60\\\end{array}\right]$

Row operation 3: Multiply the 2nd row by $-\frac{1}{12}$ . So.......

$\left[\begin{array}{cccc}1&3&|&17\\0&1&|&5\\\end{array}\right]$

Row operation 4: Add -3 times the 2nd row to the 1st row. So........

$\left[\begin{array}{cccc}1&0&|&2\\0&1&|&5\\\end{array}\right]$

Now, from this reduced row echelon form of the augmented matrix, we can get that $x=2$ and $y=5$

So, the solution of the system is: $x=2, y=5$

8 0

3 years ago

Find the value of x to the nearest tenth

irakobra [83]

Answer:

56 because a triangle is always 90 degrees so 90 minus 22 plus 12 equals 56

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers