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3 years ago

Help me please answer all because idk if I was correct scientific notation

Mathematics

1 answer:

valentina_108 [34]3 years ago

3 0

Answer:

I think the first 4 are right

5-8

sorry I cant read it it it is too small so I will explain

5.1 x 10^-2 would be 0.051 just move the decimal left x spaces where x is the exponent

4.4 x 10^3

7.5 x 10^4

6.99 x 10^7

5.75 x 10^9

8.4 x 10^-2

9.9 x 10^-3

5.15 x 10^-7

3.07 x 10^-5

you got it right

Singapore

Luxembourg

Australia

Egypt

Brazil

3,670,000,000

6.2 x 10^-6

125,000,000,000

1.25 x 10^11

Step-by-step explanation:

i hope I helped

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Number 10:
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3 years ago

Write the slip-intercept form of the equation of the line described

kompoz [17]

Answer:

1) y=⅚x -2⅓

2) y=8/3x -5

Step-by-step explanation:

<u>Point-slope form:</u>

y=mx+c, where m is the gradient and c is the y-intercept.

Parallel lines have the same gradient.

Gradient of given line= $\frac{5}{6}$

Thus, m=⅚

Susbt. m=⅚ into the equation,

y= ⅚x +c

Since the line passes through the point (4, 1), (4, 1) must satisfy the equation. Thus, substitute (4, 1) into the equation to find c.

When x=4, y=1,

1= ⅚(4) +c

$1 = \frac{20}{6} + c \\ c = 1 - \frac{20}{6} \\ c = 1 - 3 \frac{1}{3} \\ c = - 2 \frac{1}{3}$

Thus the equation of the line is $y = \frac{5}{6} x - 2 \frac{1}{3}$ .

The gradients of perpendicular lines= -1.

Gradient of given line= -⅜

-⅜(gradient of line)= -1

gradient of line

= -1 ÷ (-⅜)

= -1 ×(-8/3)

= $\frac{8}{3}$

$y = \frac{8}{3} x + c$

When x=3, y=3,

$3 = \frac{8}{3} (3) + c \\ 3 = 8 + c \\ c = 3 - 8 \\ c = - 5$

Thus the equation of the line is $y = \frac{8}{3} x - 5$ .

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3 years ago

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Ivanshal [37]

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3 years ago

Simplify the radical

olga55 [171]

Answer:

Step-by-step explanation:

$\sqrt[3]{54c}=\sqrt[3]{3*3*3*2c} =3\sqrt[3]{2c}$

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2 years ago

The maxwell family goes out for dinner and the price of the meal is $60 the sales tax on the meal is 7% and they also want to le

sukhopar [10]

So we start with the $60 untouched.

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3 years ago

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