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3 years ago

Ava grades 10 ½ tests in ¾ of an hour. At this rate, how many tests does she grade each hour?

Mathematics

2 answers:

Cloud [144]3 years ago

5 0

Answer:

Step-by-step explanation:

if you set it up as a porportion, 10.5/.75, and you find that in order to make .75 equal to one, you multiply by 1.3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333...

10.5*1.3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333...=14

Hope I helped.

dimulka [17.4K]3 years ago

4 0

Answer:

14 tests

Step-by-step explanation:

10 1/2 divided by 3/4 s 14 tests

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Multiply the following numbers. Reduce the answer to lowest terms. 3 1/5 x 2 1/7

Veseljchak [2.6K]

Answer:

48/7

Step-by-step explanation:

= 3 1 × 2 1

5. 7

= 16 × 15

5. 7

= 240 , if we divide both numbers by 5 we get;

= 48

4 0

3 years ago

If a circle has a radius of 16,and an arc length of 12x, what is the angle measure of the central angle that matches that arc?

GREYUIT [131]

Answer:

135°

Step-by-step explanation:

Using S = rA, where S is arc length, r is radius and A is angle(in radians).

Comparing:

=> 12 = 16A

=> 12/16 = A

=> 3/4 = A

Required radian is 3/4 which is 3/4 * 180° = 135°

4 0

3 years ago

2 A and B please with explanation! BIG POINTS please explain

dedylja [7]

Answer:

see explanation

Step-by-step explanation:

Using the ratio equality for circles

$\frac{arc}{C}$ = $\frac{angleatcentre}{360}$

(a)

Note the angle at the centre of the shaded arc is 360° - 90° = 270°, thus

$\frac{45}{C}$ = $\frac{270}{360}$ = $\frac{3}{4}$ ( cross- multiply )

3C = 180 ( divide both sides by 3 )

C = 60 mm

(b)

Note the angle at the centre of the shaded arc is 360° - 135° = 225°, thus

$\frac{3.3}{C}$ = $\frac{225}{360}$ ( cross- multiply )

225C = 1188 ( divide both sides by 225 )

C = 5.28 cm

8 0

3 years ago

Chose the equivelent expression for the scenario. phillip mows lawns fro $15 each. if he moves 6 lawn every week for 8 weeks. ho

Ipatiy [6.2K]

Answer:

15 x 6 x 8

Step-by-step explanation:

total money is cost per lawn times number of lawns per week times number of weeks

cost per lawn is $15

number of lawns per week is 6

number of weeks is 8

so cost total money is 15 x 6 x 8 which is none of them

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3 years ago

Como divido numeros radicales?

worty [1.4K]

Do you have a specific question or like nd question example with numbers

¿Tiene una pregunta específica o como ejemplo de pregunta con números?

4 0

3 years ago