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3 years ago

Compounding comparing accounts

Mathematics

1 answer:

Kay [80]3 years ago

8 0

Answer:

Step-by-step explanation:

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Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 8

Fynjy0 [20]

$x-\ frade\ from\ next\ test\\\\
\frac{84+65+76+x}{4}=80\ \ \ \ | multiply\ by\ 4\\\\
225+x=320\ \ \ \ | subtract\ 225\\\\
x=95\\\\
He\ should\ have\ 95\ points.$

8 0

3 years ago

Read 2 more answers

At 2:00 PM a car's speedometer reads 30 mi/h. At 2:20 PM it reads 50 mi/h. Show that at some time between 2:00 and 2:20 the acce

storchak [24]

Answer:

The correct answer will be "60 min/hour".

Step-by-step explanation:

At time 2:00 PM

A car reads = 30 mi/h

At time 2:20 PM

A car reads = 50 mi/h

Now,

At time 2:00 PM

t = 0

At time 2:20 PM

t = $\frac{1}{3}$

$v(0)=30$

$v(\frac{1}{3})=50$

For MVT,

$v'(c)=\frac{v(\frac{1}{3} -v(0))}{(\frac{1}{3} )}$

$=\frac{20}{\frac{1}{3} }$

$=60 \ min/hour$

5 0

3 years ago

Find the reference angle of -320 degrees

CaHeK987 [17]

Answer:

40°

Step-by-step explanation:

The reference angle is the positive difference between an angle and the nearest multiple of 180°.

Here, the nearest multiple of 180° is -360°. The difference of interest is ...

|-320° -(-360°)| = 40°

The reference angle is 40°.

3 0

3 years ago

An angle with a measure of 180 degrees is formed by two __________ __________.

mario62 [17]

By two opposite rays.

The explanation is the straight angle is the only type of angle formed by two opposite rays. All other angles formed by two rays are less than 180 degrees. Acute angles are between zero and 90 degrees. A right angle, with one ray perpendicular to another, is 90 degrees.

Hope it helped! :)

4 0

4 years ago

Sum of (9) Prodect (4)

vekshin1

Answer:

9+(4)

Step-by-step explanation:

3 0

3 years ago