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3 years ago

PLS ANSWER ASAP WHOEVER ANSWERS FIRST AND ANSWWRES CORRECTLY WILL GET BRAINLIEST AND WILL GET A THANK YOU

Mathematics

2 answers:

Paraphin [41]3 years ago

8 0

Answer:it’s the 3rd

Step-by-step explanation:

Murljashka [212]3 years ago

7 0

Answer:

7y+8

Step-by-step explanation:

You add all of the X's together and the singular numbers together to get the answer

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I need this ASAP. Directions: If possible then use the Law of Detachment to draw a conclusion. If not possible write not possibl

DedPeter [7]

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8 0

3 years ago

Read 2 more answers

4. The distance between a + 7i and -8 + 4i

Elis [28]

Answer:

Step-by-step explanation:

$\text{The formula of a distance between two complex numbers}\\\\z_1=a+bi,\ z_2=c+di:\\\\d(z_1,\ z_2)=|z_2-z_1|\ \text{where}\ |z|=\sqrt{Re^2+Im^2}\\\\=============================$

$z_1=a+7i,\ z_2=-8+4i\\\\d(z_1,\ z_2)=|(-8+4i)-(a+7i)|=|-8+4i-a-7i|=|-8-a-3i|\\\\=\sqrt{(-8-a)^2+3^2}\\\\d(z_1,\ z_2)=\sqrt{130},\\\\\text{therefore}\ \sqrt{(-8-a)^2+3^2}=\sqrt{130}\Rightarrow(-8-a)^2+3^2=130\\\\\bigg(-(8+a)\bigg)^2+9=130\qquad\text{subtract 9 from both sides}\\\\(8+a)^2=121\iff8+a=\pm\sqrt{121}\\\\8+a=\pm11\qquad\text{subtract 8 from both sides}\\\\a=-19\ or\ a=3$

4 0

4 years ago

The volume of sphere is 2254 pi m cubed. what is the surface area to nearest tenth?

Harrizon [31]

$V=2254\pi\ m^3\\\\V=\dfrac{4}{3}\pi r^3\\\\\text{therefore}\\\\\dfrac{4}{3}\pi r^3=2254\pi\ \ \ |:\pi\\\\\dfrac{4}{3}r^3=2254\ \ \ |\cdot\dfrac{3}{4}\\\\r^3=1690.5\to r=\sqrt[3]{1690.5}\to r\approx11.9126\to r\approx11.9$

$S_A=4\pi r^2\to S_A=4\pi\cdot11.9^2=4\pi\cdot141.61=566.44\pi\approx1778.6\ m^2$

3 0

3 years ago

Find the equation of the line (1, -6) (2, -12)

Alika [10]

Let first no. Be=x
Second no.= -2x

4 0

4 years ago

About how many students do not prefer non- fiction?

slamgirl [31]

Answer:

B. 75%

Step-by-step explanation:

If about a quarter ( 25% ) do like non-fiction, then we know that the rest do not prefer it ( 75% )

75 + 25 = 100

8 0

2 years ago