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Elina [12.6K]
3 years ago
5

I NEED HELP !!!!!!!!!

Mathematics
1 answer:
marissa [1.9K]3 years ago
7 0

Answer:

b

d

e

Step-by-step explanation:

the standar form is

ax^{2} +bx+c=0

so it's

0.5x^{2} -3.2x+5.8=0\\\\-x^2-3x+20=0\\\\\frac{1}{2}x^2+4x-3=0\\\\

only that

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Fran has ''buy one get one free'' tickets to the comedy club. She is bringing 7 people, including herself. If the regular price
liraira [26]
She will have $57 back because the ticket are buy one get one free and she has 7 friends so for  3 tickets that u buy 6 of your friend get to go and then thei is still one more friend so you have to buy one more ticket so 10.75*3=32.25
and 32.25+10.75=43    and 100-43=57

4 0
3 years ago
If 2 cards are selected from a standard deck of 52 cards.The first card is placed back in the deck before the 2nd card is drawn.
Mkey [24]

There are 13 cards of each suit.

Picking a heart would be 13/52 which reduces to 1/4

Then replacing the card and picking a club would be the same : 1/4

Picking a heart then a club would be 1/4 x 1/4 = 1/16

Answer: 1/16

7 0
2 years ago
What percent is equivalent to 7/20
expeople1 [14]
35%
divide whatever number you get move the decimal two spaces to the right and that is the percent.
4 0
3 years ago
29. Determine the value of x.<br> abc<br> X + 42°<br> 147°<br> 2x
suter [353]

Answer:

x=35

Step-by-step explanation:

180-147=33 (angles in a straight line)

33+3x+42=180 (angles in a triangle)

3x+42=147

147-42=105

105/3=35

5 0
2 years ago
Determine the measure of the missing angles. Show your work! Be ready to discuss your answer.
soldier1979 [14.2K]

For a.

Since there are already two angles given for the triangle, we can measure the last angle using this formula:

90 + 55 + a = 180

Now solve for "a".

90 + 55 + a = 180

145 + a = 180

a = 180 - 145

a = 35°

For b.

From the picture above, the two triangle's tip are touching and having to form <em>vertical angles. </em>This means that the angles are congruent to each other.

Now that we have two angles in the second triangle(35 and 120), we can use the same formula:

35 + 120 + b = 180

Now solve for "b":

35 + 120 + b = 180

155 + b = 180

b = 180 - 155

b = 25°

3 0
3 years ago
Read 2 more answers
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