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3 years ago

PLS HELP ASAPPPPPPPPPPPPPP

Mathematics

1 answer:

Alexxandr [17]3 years ago

7 0

Answer:

Step-by-step explanation:

36+36=72

180-72=108

360-(108×2)

144

144÷2

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Frank wants to know the favorite sport of his classmates. Which survey method would most likely provide him unbiased results.

Ann [662]

Answer:

ask everyone individually, and then record the information as a tally, then transfer the information to a bar graph.

Step-by-step explanation:

if you ask everyone individually, then you are less likely to have people saying the same things as their friends, and if you tally it up, it would be easier to transfer your information to a graph. A bar graph would be ideal for this type of situation because it shows multiple options, and lets you input how many people chose each option.

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3 years ago

jeffery wei received a 6 year non subsidized student loan of 30000 at an annual interest rate of 5.2%. what are jeffery’s monthl

Anettt [7]

If the loan interest rate remains at i=5.2%/12 per month throughout the six years,
then amount owing after 4 years, or the future value
$F=30000(1+i)^(4*12)$
$==30000(1+0.052/12)^(48)$
$=36919.80$ to the nearest cent

Monthly payment, A, required to repay the loan in two years (24 months)
$\frac{P(i*(1+i)^n)}{(1+i)^n-1}$
$=\frac{36919.80(.052/12*(1+.052/12)^{24})}{(1+.052/12)^{24}-1}$
$=1623.03$ to the nearest cent.

Answer: Jeffrey will have to repay $1623.03 monthly during the last two years of his loan to owe nothing at the end of the 6 years loan period.

3 0

3 years ago

What is the value of x in the equaton<br><img src="https://tex.z-dn.net/?f=%20%7B25%7Dx%5E%7B2%7D%20%3D%2016" id="TexFormula1" t

lisov135 [29]

$25x^2=16\ \ \ |:25\\\\x^2=\dfrac{16}{25}\to x=\pm\sqrt{\dfrac{16}{25}}\\\\x=-\dfrac{\sqrt{16}}{\sqrt{25}}\ \vee\ x=\dfrac{\sqrt{16}}{\sqrt{25}}\\\\\boxed{x=-\dfrac{4}{5}\ \vee\ x=\dfrac{4}{5}}$

5 0

3 years ago

Find the square roots of 119 + 120i algebraically.

blondinia [14]

Answer:

Step-by-step explanation:

Given

z=119+120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ -----------1

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=\frac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\mp 4.90$

thus $\sqrt{119+120 i}=\pm (12.24+i 4.90)$

8 0

3 years ago

5x + 2y = 7

k0ka [10]

5x + 2y = 7 . . . (1)
y = x + 1 . . . (2)
Putting (2) into (1) gives
5x + 2(x + 1) = 7 => 5x + 2x + 2 = 7 => 7x = 7 - 2 = 5 => x = 5/7
From (2) y = 5/7 + 1 = 12/7

Therefore, solution is {(5/7, 12/7)}

3 0

3 years ago