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3 years ago

What is the approximate area of the circle shown below? 9.4 cm

Mathematics

2 answers:

wlad13 [49]3 years ago

8 0

Answer:

A=3.14(9.4 squared)9.4 squared= 88.363.14(88.36)= 277.4504277.4504 is close to 278 The answer is D.

Hope this helps!

pantera1 [17]3 years ago

8 0

Answer:

Answer is D. 278

Step-by-step explanation:

a p 3 x

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How many push ups will Scott do on day 10 and 20?

Margaret [11]

Answer:I think 57Step-by-step explanation:

Cuz its adding 2 every time then I just did 28 x 2 and added the extra. Does that make sense?

4 x 8 = 28

28 x 2 = 56

56 + 1 = 57

7 0

3 years ago

Simplify the expression (3+i)(2+i)

vovikov84 [41]

Answer:

Step-by-step explanation:

hello :

(3+i)(2+i) = 6+3i+2i+i² but : i² = -1

(3+i)(2+i) = 5+5i

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3 years ago

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Which value, when placed in the box, would result in a system of equations with infinitly many solutions? Y=2x - 5 2y-4x=

Nezavi [6.7K]

Given:

The system of equations is

$y=2x-5$

$2y-4x=?$

To find:

The missing value for which the given system of equations have infinitely many solutions.

Solution:

Let the missing value be k.

We have,

$y=2x-5$

$2y-4x=k$

Taking all the terms on the left side, the given equations can be rewritten as

$-2x+y+5=0$

$-4x+2y-k=0$

The system of equations $a_1x+b_1y+c_1=0$ and $a_2x+b_2y+c_2=0$ have infinitely many solutions if

$\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}$

We have,

$a_1=-2,b_1=1,c_1=5$

$a_2=-4,b_2=2,c_2=-k$

Now,

$\dfrac{-2}{-4}=\dfrac{1}{2}=\dfrac{5}{-k}$

$\dfrac{1}{2}=\dfrac{1}{2}=\dfrac{5}{-k}$

$\dfrac{1}{2}=\dfrac{5}{-k}$

On cross multiplication, we get

$-k=10$

$k=-10$

Therefore, the missing value is -10.

6 0

3 years ago

Pls Help ASAP if you. Can

n200080 [17]

I think it’s b because it would make the most sense I believe but I’m really sorry if I’m wrong

5 0

3 years ago

(2a-4a2+8)+(5a2 -5a+6)

lana [24]

A^2-3a+14 is the answer :)

8 0

2 years ago

Read 2 more answers