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Dimas [21]
3 years ago
5

1. Alicia had $-11 in her checking account. She did a few chores and made $44.50. She

Mathematics
1 answer:
Masteriza [31]3 years ago
6 0

Answer:

The answer is 21

Step-by-step explanation:

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Nicole invested her savings in two investment funds. The amount she invested in Fund A was $3000 less than the amount she invest
victus00 [196]
<span>Let us denote the amount of investment in the Fund B with x. We know that Fund B returned 8%  and that in Fund A Nicole invested </span>$3000 less than the amount she invested in Fund B, so we can write: x-3000<span>Fund A returned 6%. 
Interest = 2060
The percent has been converted by multiplying the equation by 100 
8x+6(x-3000)= 2060*100 
8x+6x-18000=206000
</span><span>14x=206000+18000
14x=224000
x=16000
Nicole invested in Fund B $16000 and in Fund A </span><span> $16000-3000=13000.</span><span>

</span>
8 0
2 years ago
On each round, Ann and Bob each simultaneously toss a fair coin. Let Xn be the number of heads tossed in the 2n flips which occu
CaHeK987 [17]

Answer:

P=\frac{2n!}{m!*(2n-m)!}*0.5^{2n}

Step-by-step explanation:

In a coin toss the  probability of tossing a head is 0.5 (50% head/50% tails)

If n is the number of rounds and 2n the number of coins tossed (one for each player), the probability of having m heads tossed is:

R=\frac{2n!}{m!*(2n-m)!}

R is the number of cases (combination of coins tossed) that gives a m number of heads. Each case has a probability of P_{case}=0.5^{2n} so:

P=\frac{2n!}{m!*(2n-m)!}*0.5^{2n}

<u>For example, to toss 4 heads in 5 rounds: </u>

  • n=5
  • 2n=10
  • m=4

P=\frac{10!}{4!*(10-4)!}*0.5^{10}

P=\frac{10*9*8*7*6!}{4!*6!}*0.5^{10}

P=\frac{10*9*8*7}{4!}*0.5^{10}

P=\frac{10*9*8*7}{4!}*0.5^{10}=0.205

8 0
3 years ago
Anything can solve this
prohojiy [21]

Answer:

64.87° = 65°{ to the nearest degree}

Step-by-step explanation:

From the figure Catherine is standing 105m from the point B where the Ballon is; this description fits a= 105 m from the diagram.

Similarly Aisha is standing 95m from the point B where the Ballon is; this description fits c= 95 m from the diagram

A = ? ( The angle of elevation of Aisha towards the balloon)

C = 55°

From Sine rule

It states that the sine of an angle divided by its corresponding side is equal for all corresponding angles and sides along the triangle.

This is expressed mathematically as;

Sin A/ a= SinB/ b= SinC/c

We take the pairs of relevance;

Sin A/ a = SinC/c

There SinA = SinC/c × a

=Sin55/95 × 105

= 0.9053

A = Sin^(-1)[0.9053]

A = 64.87° = 65°{ to the nearest degree}

6 0
3 years ago
Find the surface area of the prism. HELP IT DUe in 10 mins so I will mark you as brainly if you answer correctly
Lyrx [107]

Answer:

answer: 740

Step-by-step explanation:

Hope that helps!

3 0
2 years ago
What value of A in this equation y=(9A-7)x would give a line with the slope -5?
Rainbow [258]

0, I put y=(0-7)x into a graphing calculator

5 0
3 years ago
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