Plz help with these questions!!

Answers

Answer 1

Answer:
I feel uncomfortable at having been bamboozled. You sent me
a message saying you wanted me to "check" your math work.
Sadly, the truth is that you haven't necessarily tried any of these,
and there's nothing to "check". What you really want from me is
just the answers.

1). 62,000,000 = 6.2 x 10⁷

2). -3.05 x 10⁶ = -3,050,000

3). 0.00000089 = 8.9 x 10⁻⁷

4). (9.8 x 10²) x (5.9 x 10⁷) = (9.8 x 5.9) x (10²⁺⁷) =

      57.82 x 10⁹ =

   5.782 x 10¹⁰ .

5). (7.2 x 10⁻⁵) / (4.3 x 10⁻³) = (7.2 / 4.3) x (10⁻⁵ / 10⁻³) =

   1.67 x (10⁻⁵ ⁺³) =

   1.67 x 10⁻² .

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Find the area of the shape shown below. 7 3 and 3
-2/3 = 2r - -2/3 please answer
Are there any integers between 0 and 1? explain?
Whats the answer i have no idea and I'm really having a hard time
Which expression below is equivalent to 6/5x+ 6 and 3/5?a. 6/5(x+3) b. 3/5(2x+11) c. 3/5(2x+6) d. 2/5(3x+5)

Consider the system below. 4x-2y=-12 3x-y=-3 Solve the system by using a matrix equation. Show your work.

Answers

The matrix equation AX=B, where A and B are numerical matrices and X is unknown matrix has a solution $X= A^(-1) B$ , where $A^(-1)$ is inverse matrix of X.
1. We rewrite given system as matrix equation $\left[\begin{array}{cc}4&-2\n3&-1\end{array}\right] X=\left[\begin{array}{c}- 12\n- 3\end{array}\right]$ ;
2. Find $A^(-1) = \left[\begin{array}{cc}4&-2\n3&-1\end{array}\right] ^(-1)$ by the rule $A^(-1)= (1)/(det \ A) [ A_(ij) ] ^(T)$ . So, $det\ A=4$ × $(-1)-3$ × $(-2)=-4+6=2$ and algebraic supplements are
$A_(11) =-1 \n A_(12) =-3 \n A_(21)=2 \n A_(22) =4$ . Then $A^(-1) = (1)/(2) \left[\begin{array}{cc}-1&-3\n2&4\end{array}\right] ^(T)= \left[\begin{array}{cc}- (1)/(2) &1\n- (3)/(2) &2\end{array}\right]$ ;
3. Calculate $X= \left[\begin{array}{cc}- (1)/(2) &1\n- (3)/(2) &2\end{array}\right] \left[\begin{array}{c} -12\n-3\end{array}\right]=$ $\left[\begin{array}{c}3\n12\end{array}\right]$ ;

4. We obtain $X= \left[\begin{array}{c}3\n12\end{array}\right]$ , from where x=3 and y=12.

1Which circles have an area of 9 $\pi ^$ $m^(2)$ ?Choose all answers that are correct.

A.
a circle with a radius of 3 m

B.
a circle with a diameter of 6 m

C.
a circle with a radius of 9 m

D.
a circle with a diameter of 9 m

Answers

The answer is letter A.

How much ft is in 3 miles

Answers

Hey Giraffe111!
5280 ft= 1 mile
x ft= 3 mile
5280*3=15840 ft!
I hope this helps;)

Please don't give me the wrong answers!
can I have it as soon as possible?
(Thank you)

Answers

i dont understadn the questions

Step-by-step explanation:

If mZBCD = 51°, solve for x.
(1 4x + 4) 8
55°

Answers

Answer:

(14x+4)8=55 were x = 3.07.

Step-by-step explanation:

(14x + 4) 8 = 55

-8 -8

14x + 4 = 55

- 4 -4

14x = 55

x = 3.07

Marge cut 16 pieces of tape. Each piece is 3/8in long HOW MUCH TAPE DID SHE USE???????? meow :3

Answers

To solve this, all you need to do is multiply 16 by 3/8. When you multiply a whole number by a fraction, make the whole number into a fraction by putting it over 1.

16 3
---- x ---- Multiply the numerators together and then the denominators.
1 8

(16 x 3) / (1 x 8)

48 / 8 Then divide.

She used 6 inches of tape.

Answer:

6 inches

Explanation:

I hope this helps!!!

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