3 years ago

6

Mathematics

1 answer:

Natali5045456 [20]3 years ago

7 0

Write Answer like this #### degrees C

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Pls help urgently extra points and mark brainlist

den301095 [7]

Answer:

the third one

Step-by-step explanation:

9 to the power of 4 is 9 multiplied by it's self 4 times

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3 years ago

20 - (-3) + 15 help a girl outt :(

Kryger [21]

Answer is 38

20 -(-3) + 15

20 + 3 + 15

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3 years ago

Read 2 more answers

Can I get help with these two please?

PSYCHO15rus [73]

Hi, hope this helps :)

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3 years ago

Find the solution set of the following quadratic equations using the quadratic formula.

oksian1 [2.3K]

Answer:

<h3> 1) $x_1=\dfrac{7+\sqrt{13}}2\,,\quad x_2=\dfrac{7-\sqrt{13}}2$ </h3><h3> 2) $x_1=-\dfrac13\,,\quad x_2=-3$ </h3>

Step-by-step explanation:

$x^2 - 7x + 9 = 0\quad\implies\quad a=1\,,\ b = -7\,,\ c=9\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-(-7)\pm\sqrt{(-7)^2-4\cdot1\cdot9}}{2\cdot1}=\dfrac{7\pm\sqrt{49-36}}2\\\\x_1=\dfrac{7+\sqrt{13}}2\,,\quad x_2=\dfrac{7-\sqrt{13}}2$

<h3>2)</h3><h3> $3x^2 + 10x=-3\\\\3x^2+10x+3=0\quad\implies\quad a=3\,,\ b =10\,,\ c=3\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-10\pm\sqrt{10^2-4\cdot3\cdot3}}{2\cdot3}= \dfrac{-10\pm\sqrt{100-36}}6\\\\x_1=\dfrac{-10+\sqrt{64}}6=\dfrac{-10+8}6=-\dfrac13\,,\qquad x_2=\dfrac{-10-8}6=-3$ </h3>

7 0

3 years ago

The diameter of the circle shown below is

Artyom0805 [142]

Answer:

A. 5.75

Step-by-step explanation:

11.5/2 = 5.75

4 0

3 years ago