I think it’s c but I’m not sure
Put the x on one side
2x+7=x+11
-x -x
x+7=11
Then subtract
x+7-7=11-7
x=4
Hope it helps!!
<h3>
Answer:</h3>
= 18°
= 4(18°) = 72°
<h3>
Step-by-step explanation:</h3>
Given:
- One angle in the triangle is 90°
- One angle that isn't 90° is 4 times larger than another angle that isn't 90°
Angles:
= 90°
= x
= 4x
Solution Pathway:
Under the rules for any triangle, a triangle's interior angles must add up to 180°. Using this, we can set up the equation:
- sum of the interior angles = 180°
Now let's solve for x.
- 90 +x + 4x = 180
- 90 + 5x = 180
- 5x = 90
- x = 18°
Now that we know x is 18°, lets plug this value into the two unknown acute angles.
- = 18°
- = 4(18°) = 72°
Answer:
E. 16 min 12 sec
Step-by-step explanation:
Let x represent total time taken to complete the exercise.
We have been given that Dara ran on a treadmill that had a readout indicating the time remaining in her exercise session.
When the readout indicated 24 min 18 sec, she had completed 10% of her exercise session. This means that 90% time of exercise is equal to 24 minutes and 18 seconds.
18 seconds will be equal to 0.3 minutes.
Let us find total time of exercise as:
To find readout when Dara had completed 40% of her exercise session, we need to find 60% of total time.
Since our time in in minutes, so we will convert 0.2 minutes to seconds by multiplying by 60.
Therefore, the readout will indicate 16 minutes 12 seconds, when Dara had completed 40% of her exercise session.
Answer:
B
Step-by-step explanation:
Given
x² - 2x + 26 = 0 ← in standard form : ax² + bx + c = 0 : a ≠ 0
with a = 1, b = - 2, c = 26
Use the quadratic formula to solve for x
x = ( - (- 2) ± ) / 2
= ( 2 ± ) / 2
= ( 2 ± ) / 2
= ( 2 ± 10i ) / 2
= 1 ± 5i
Solutions are x = 1 + 5i or x = 1 - 5i → B