3 years ago

Evaluate the expression for a = -20. 19 +21=

Mathematics

1 answer:

NeTakaya3 years ago

6 0

Answer: a = 0.81

So yeah, that is the answer.

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I need help just answer no explanation please

dimulka [17.4K]

B . sorry if i’m wrong

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2 years ago

Which is the correct algebraic representation for the area of a circle?

fiasKO [112]

B because pie radius square = area of a circle

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3 years ago

What is the area of the semi circle if the diameter is 10 cm

Fudgin [204]

Answer:

39.25 cm

Step-by-step explanation:

The formula for a circle is pi x radius x radius.

So to get the radius, you multiply 10 and 1/2. You should get 5. Then you multiply 5 by 5. You should get 25.

Then you multiply 3.14 and 25. You should get 78.5.

The last step is to divide 2 by 78.5. You should get 39.25

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2 years ago

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If y varies directly as the square of x and Y--54 when x-9, then -- when x-6.<br><br> True or false

mario62 [17]

Answer:

24.012

Step-by-step explanation:

y=kx^2

54=81k

k=54/81

k=0.667

y=kx^2

y=0.667×36

y=24.012

8 0

1 year ago

Bonnie deposits $70.00 into a new savings account. The account earns 45 % simple interest per year , s added or removed from the

nordsb [41]

Answer:

$\$164.5$

Step-by-step explanation:

Bonnie deposits $70.00 into a new savings account.

The account earns 45% simple interest per year.

She neither added or removed from the savings account for 3 years.

We know that,

$i=\dfrac{P\cdot r\cdot r}{100}$

here,

i = interest,

P = principal = $70,

r = rate of interest = 45%,

t = time = 3 years,

Putting the values,

$i=\dfrac{70\cdot 45\cdot 3}{100}=\$94.5$

So the total amount will be,

$=\text{Principal}+\text{Interest}$

$=70+94.5$

$=\$164.5$

6 0

3 years ago

Read 2 more answers