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3 years ago

Derrick's dad bought new tires for $900 using a credit card. His card has an

Mathematics

1 answer:

Mkey [24]3 years ago

5 0

Answer:

$57 interest

Step-by-step explanation:

For an interest rate of 19% ; the monthly interest will be 19/100 = 0.19

4 months interest will be (0.19 * 4)/12 = 0.0633

so now, the value of the interest will be

0.0633 * 900 = $57

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Find the measure of angle DCF= help me please :)) ty

ivolga24 [154]

Answer:

∠ DCF = 39°

Step-by-step explanation:

the secant- secant angle DCF is half the difference of the measures of the intercepted arcs, that is

∠ DCF = $\frac{1}{2}$ (EG - DF) = $\frac{1}{2}$ (127 - 49)° = $\frac{1}{2}$ × 78° = 39°

3 0

2 years ago

Which best describes the triangle? a) isosceles b) acute c) scalene d) equilateral

Nonamiya [84]

Answer:

$scalene \: triangle$

Step-by-step explanation:

The above given triangle represents the unequal lengths of three sides properties of scalene triangle

<h3>hence, it's a scalene triangle♥</h3>

Hope this helps you out!!!

5 0

4 years ago

The usual life of a computer terminal at a university computer center is known to be normally distributed with a mean of 3.25 ye

UNO [17]

Answer:

a) 0.6915; b) 2.83 years

Step-by-step explanation:

For part a,

The formula for a z score is

$z=\frac{X-\mu}{\sigma}$

Our mean, μ, is 3.25 and our standard deviation, σ, is 0.5.

This gives us

z = (3-3.25)/0.5 = -0.25/0.5 = -0.5

Using a z table, we see that the area under the curve to the left of this is 0.3085. However we want the area to the right; this means we subtract from 1:

1-0.3085 = 0.6915

For part b,

We look in the cells of a z table to find the value closest to 20%, or 0.2000. This is 0.2005, which corresponds with a z score of -0.84:

-0.84 = (X-3.25)/0.5

Multiply both sides by 0.5:

0.5(-0.84) = ((X-3.25)/0.5)(0.5)

-0.42 = X-3.25

Add 3.25 to each side:

-0.42+3.25 = X-3.25+3.25

X = 2.83

The advertised life would be 2.83 years.

8 0

3 years ago

PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Nadusha1986 [10]

Answer:

after school and college football season

6 0

3 years ago

Read 2 more answers

Jessica has 20 pieces of candy in a bag: 2 mint sticks, 9 jelly treats, and 9 fruit tart chews. If she eats one piece every 10 m

dedylja [7]

Answer:

18.95%

Step-by-step explanation:

In this case what we must do is calculate the probability of eating a jelly treats first and then another jelly treats, being the final probability the multiplication of these events.

We know that there are 20 in total and that initially there are 9 jelly treats, so the first event is the probability:

9/20

And the second event, with one less in each, would be:

8/19

The final probability then:

9/20 * 8/19 = 0.1895

So the probability of this happening is 18.95%

4 0

4 years ago

Read 2 more answers