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4 years ago

7

12 more than g expression

1 answer:

andriy [413]4 years ago

3 0

<span>12 more than g expression = g + 12</span>

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Sarah and Joshua are trying to estimate the height of a parking garage using a 50 yards-long rope. Joshua is in the floor while

RUDIKE [14]

Answer:

Both are correct, the height can be calculated using either expression if angles are complementary.

Step-by-step explanation:

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

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3 years ago

Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

nasty-shy [4]

The third one is true

good luck

3 0

3 years ago

Read 2 more answers

A moving trailer with a speed of 70km/h slows down its speed by 15% within 30 seconds. calculate the declaration of the trailer.

antoniya [11.8K]

Answer:

declaration = - 0.55 m/s²

Step-by-step explanation:

The declaration is a negative accelaration.

Therefore:

$a = \frac{v-u}{t}$

a = ?

v = 70 of 15% = 10.5 km/h to m/s = 2.9 m/s

u = 70 km/h to m/s = 19.4 m/s

t = 30 seconds

$a = \frac{2.9-19.4}{30}\\$

a = - 0.55 m/s²

7 0

3 years ago

A bread recipe calls for 2 cups of wheat flour and 3 1/4 cups of white flour. How much flour does the recipe call for altogether

marusya05 [52]

Answer:

Step-by-step explanation:

2+3.25=5.25 or 5 1/4 cups of flour total

8 0

3 years ago