3 years ago

Answer using the quadratic formula (pls show work :) )

Mathematics

1 answer:

baherus [9]3 years ago

7 0

-1/5, -4 I’m pretty sure and decimal form is -0.2, -4

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A quadrilateral has angle measures of 120°, 37°, and 48°. What is the measure of the fourth angle?

White raven [17]

155 degrees because the sum of the angles in a quadrilateral is 360 degrees.
x + 120 + 37 + 48 = 360
x= 155

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3 years ago

Read 2 more answers

Mila Hawkins purchased a bookshelf for $210.00.

Alenkinab [10]

Answer:

$12.60

Step-by-step explanation:

6% of 210 is .06 x 210 which equals 12.60

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3 years ago

Combine like terms in the following expression:<br> 3x 10 - 5x + 10<br><br> Your answer:

Allushta [10]

Answer:

= -2x

Step-by-step explanation:

3x and -5x are like terms and -10 and 10 are also like terms. like terms can be added together

= -2x cause the 10's cancel out

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3 years ago

What is the other square root of 119 + 120i?

MakcuM [25]

Answer:

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

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 $x=p^2$

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

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

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

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

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\pm 4.90$

thus,

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

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3 years ago

A real estate agent gets a 5.5% commission on all of the houses she sells How much money would she make for selling a $198,000 h

Nataliya [291]

Answer:

$10,890

Step-by-step explanation:

5.5% × 198000 = 10890

3 0

3 years ago