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MAXImum [283]
3 years ago
11

Need help with my homework plz

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
7 0

Answer:

third answer choice

Step-by-step explanation:

√ 98 square root is 7√2, a irrational number.

add 5

5+7√ 2, irrational

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H=-16t^2+46t+6 after how many seconds will the ball hit the ground?
ANEK [815]
Ball hit the ground is when the function equals zero
0=-16t^2+46t+6
we can't factor so use quadraticformula

for
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}
x=\frac{-46+/- \sqrt{46^2-4(-16)(6)} }{2(-16)}
x=\frac{-46+/- \sqrt{2116+384} }{-32}
x=\frac{-46+/- \sqrt{2500} }{-32}
x=\frac{-46+/- 50 }{-32}
x=\frac{-46+ 50 }{-32} or \frac{-46- 50 }{-32}
x=\frac{4}{-32} or x=\frac{-96}{-32}
x=-1/6 or x=3

we cannot have negative time because time starts at 0
disregard -1/6 as a possible answer


answer is after 3 seconds

4 0
3 years ago
I need help on all 3 of these questions
Jobisdone [24]
1) C is because it’s exactly double the size in both width and length while the others are only gaining one or the other. For example - the a length of the squares is 5 and the length on c is 10, the base on a is 3 long, the base on c is 6. The width on a is 1 and the width on c is 2. You can put these into fractions 5/10 3/6 1/2 but they all equal 1/2. So it’s double the size of a.

5 0
3 years ago
A researcher believes that 5% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the
DerKrebs [107]

Answer:

0.9036

Step-by-step explanation:

Calculation to determine the probability that the proportion of Labradors

P(Proportion greater than 4%)

= P(z> 0.04 -0.05 /√0.05 * 0.95/806

= P(z > -1.30)

=0.9036

Thereforethe probability that the proportion of Labradors is =0.9036

6 0
3 years ago
YESSS love struggling 7th grade math problem ......... help me
Dimas [21]

Answer:

x = 20

ABC = 85

BCA = 81

CAB = 14

Step-by-step explanation:

I answered your other question, so basically just read the explanation there cuz I'm too lazy to write it again :P

4 0
3 years ago
What would -9 1/2 be as a decimal?
Kamila [148]
-9.5 because 1/2 simplifies to .5 and 9 is the whole number 
3 0
3 years ago
Read 2 more answers
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