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2 years ago

How many significant numbers are in 1,076

Mathematics

1 answer:

Anton [14]2 years ago

8 0

There are 4 significant figures as the zero is placed between significant numbers.

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A circle has a radius of 13in . find the radian measure of the central angle ? that intercepts an arc of length 15in

steposvetlana [31]

Find the circumference which is 2*3.14*13 and then usethe central angle formula

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2 years ago

Hello please evaluate the expressions when x = 3 & y = 15

Nesterboy [21]

Y-6 = 15-6=9
2y+x= 2(15) + 3= 30+3 = 33

7 0

2 years ago

Chris saved x dollars and spent half of his savings buying video games. After earning an additional $15 cutting grass, he had $5

olga55 [171]

Chris started with $70 in the savings account

What is the equation representing the scenario?

The equation representing the scenario painted in the question is: one half times x plus 15 equals 50

1/2*X+15=50

X/2+15=50

X/2=50-15

X/2=35

X=35*2

X=70

In short the amount Chris started with in the savings account is $70

Find out more about savings plan equation on:brainly.com/question/23630456

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1 year 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,

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

8 0

2 years ago

What percent of 80 is 16

igor_vitrenko [27]

Answer:

Step-by-step explanation:

set a proportion

16 x

____ = ______

80 100

by doing this you can cross multiply the terms

80x=1600

divide both sides by 80

x=1600/ 80=20

7 0

3 years ago

Read 2 more answers