Acar mechanic tested the accuracy of three speedometers. the table shows the speed registered by each of the three speedometers. the actual speed each speedometer was tested on was 90 kmph.
which statements are true?
speedometer speed displayed (kmph)
a 92
b 87
c 88
choose exactly two answers that are correct.
a.
speedometer a and speedometer c had the same percent error.
b.
speedometer c had the least percent error.
c.
speedometer c had a 0.02% error.
d.
speedometer b had about a 3.3% error.

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°

536

step-by-step explanation: