All categories

3 years ago

Anybody know this answer? It’s mad hard

Mathematics

2 answers:

daser333 [38]3 years ago

7 0

There is exactly one solution (0,-2)

rodikova [14]3 years ago

5 0

3x + y = -2 so y = -3x - 2
and
x - 2y = 4

substitute y = -3x - 2 into x - 2y = 4
x - 2y = 4
x - 2(-3x - 2) = 4
x + 6x + 4 = 4
7x = 0
x = 0

y = -3(0) - 2
y = -2

solution (0 , -2)

Answer
B. There is exactly one solution at (0, -2)

You might be interested in

Please help! Need answer to number 4

alekssr [168]

Answer: H, 1/21

Step-by-step explanation:

7 letters in October

1 b / 7 letters

2 o / 6 letters

1/7 * 2/6 = 2/42 = 1 / 21

5 0

3 years ago

You wish to package a spherical globe inside a cubical box . The diameter of the globe is 30 centimeters . How much empty space

Aneli [31]

Answer:

<h2>The empty inside the box is 12,870 cubic centimeters, approximately.</h2>

Step-by-step explanation:

Givens

The diameter of the globe (sphere) is 30 centimeters,
The box must has dimensions 30x30.

We need to find each volume to subtract them.

$V_{box}=(30cm)^{3}= 27,000 \ cm^{3}$

$V_{sphere}=\frac{4}{3} \pi (15cm)^{3} \approx 14,130 \cm^{3}$

The difference betweem the box and the sphere is

$\Delta V=27,000 - 14,130 = 12,870 \ cm^{3}$

Therefore, the empty inside the box is 12,870 cubic centimeters, approximately.

5 0

3 years ago

PLEASE HELP IM TIMED<br> If 3^2x+1=3x+^5 what is the value of x

atroni [7]

The correct answer is X=6

3 0

4 years ago

0.000000452 in scientific notation

Marta_Voda [28]

Answer:

4.52 x 10^-7

Step-by-step explanation:

you have a very small number (numbers to right of decimal) so you're exponent will be negative.

5 0

3 years ago

Read 2 more answers

is <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3to%20%5C%3A%20the%20%5C%3A%20power%20%5C%3A%20of%20%5C%3A%20100%7D%7B3to%20%5

Norma-Jean [14]

Remember the laws of exponents:

$\frac{a^n}{a^m}=a^{n-m}$

Then:

$\begin{gathered} \frac{3^{100}}{3^{99}}=3^{100-99} \\ =3^1 \\ =3 \end{gathered}$

Therefore:

$\frac{3^{100}}{3^{99}}=3$

7 0

1 year ago