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3 years ago

Can someone help me with this. Will Mark brainliest.

Mathematics

2 answers:

Tamiku [17]3 years ago

8 0

Heyoo. I hope this helps! If you need anymore help, feel free to ask me any questions. I used the midpoint formula to solve it. (I included it in the photo)

:)

Anastasy [175]3 years ago

6 0

Answer:

(-5.5,-8.5)

Step-by-step explanation:

-7+-2=-9

-9/2=-5.5

-10+-7=-17

-17/2=-8.5

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Use the quadratic formula to solve x2 + 9x + 10 = 0.<br> What are the solutions to the equation?

vampirchik [111]

Answer:

$\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}$

Step-by-step explanation:

$\text{The quadratic formula of}$

$ax^2+bx+c=0$

$\text{If}\ b^2-4a0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\=========================================$

$\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}$

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2 years ago

Read 2 more answers

Conner has collected 29 out of the 50 state flags. What percentage of the state flags has Conner collected.

Yakvenalex [24]

Answer:

58%

Step-by-step explanation:

total is 50 and 29 has been collected, so this can be expressed as 29/50. when divided is 0.58 multiply it by 100 and you get 58%

8 0

2 years ago

Given: p(a) =0.70, p(b)=0.60, p(a or b) =0.88. are a and b independent? (use your answer from question

allsm [11]

Answer:

Step-by-step explanation:

P(a or b) = P(a) + P(b) - P(a and b)

0.88 = 0.70 + 0.60 - P(a and b)

P(a and b) = 1.30 - 0.88 = 0.42.

So the events a and b are not mutually exclusive.

4 0

1 year ago

At a local track meet, RCMS won 3 blue ribbons than red ribbons. They also won 7 more yellow ribbons than red ribbons. RCMS won

erma4kov [3.2K]

Let no red ribbons=x
no. Of blue ribbons=x+3
No. Of yellow ribb9ns=x+7
Totsl ribbons=28
28=x+x+3+x+7
28=3x+10
3x=28-10
3x=18
X=18/3
X=6

No .of red ribbons=6
No. Of blue ribbons=x+3=9
No. Of yellow ribbons=x+7=13

5 0

2 years ago

I only need number 1 i don’t understand.

valentinak56 [21]

Answer:

Step-by-step explanation:

in this problem there is A+b=15

A=9

B=12

5 0

2 years ago