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blondinia [14]
3 years ago
7

50 POINTS AND BRAINLIEST TO FIRST CORRECT ANSWER

Mathematics
2 answers:
algol [13]3 years ago
7 0

Answer:

6) Option 4

7) Option 4

8) Option 1

Step-by-step explanation:

1.31×(10^-5) = 1.131/10⁵

= 1.132/100000

= 0.00001132 (option 4)

7) 3.76×10⁴ + 5.5×10²

10²(3.76×10² + 5.5)

10²(376 + 5.5)

10²(381.5)

10²(3.815×10²)

3.815×10⁴ (option 4)

8) (4×10³)(5×10⁷)

4×10³×5×10⁷

4×5×10³×10⁷

(4×5)(10^(3+7)

(4.5)×(10^(3+7)) (option 1)

That . represents multiplication

Further simplified below:

20×10¹⁰

2.0×10¹¹

Dafna1 [17]3 years ago
7 0

Answer:

Step-by-step explanation:

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If x varies directly with y and x = 3.5 when y = 14, find x when y = 18.
maks197457 [2]

Answer:

x = 4.5

Step-by-step explanation:

there's definitely other ways to solve this, but I used a proportion.

\frac{3.5}{x} = \frac{14}{18}

Then you can make this equation:

14x = 3.5 * 18

I solved for it and got 4.5 .

5 0
3 years ago
The multiplicative inverse of (-4)⁻² is (4)⁻². True False
timofeeve [1]

Answer: false

Step-by-step explanation:

The exponents would have to have a different sign from each other (positive or negative), not the integer.

3 0
3 years ago
Please answer thxxxx
Llana [10]
B. 13

12^2 + 5^2 = c^2
169 = c^2
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please mark as brainliest :D
4 0
3 years ago
Read 2 more answers
Write the fraction or mixed number as a percent 7 over 8
rusak2 [61]

Answer:

87.5%

Step-by-step explanation:

7/8

= 0.875

= 0.875 x 100%

= 87.5%

4 0
3 years ago
Write the standard form of the equation that is parallel to y = -6x + 5 and goes through point (4, 4).
steposvetlana [31]

6x + y = 28.  The standard form of the equation that is parallel to y = -6x + 5 and goes through point (4, 4) is 6x + y = 28.

The equation is written in the slope-intercept form y = mx +b. So:

y = -6x + 5

The slope m = -6

Since the slopes of parallel lines are the same, we are looking for a slope line m = -6 and goes through point (4, 4).

With the slope-intercept form:

y = mx + b

Introducing the slope m = -6:

y = -6x + b

Introducing the point (4, 4):

4 = -6(4) + b

b = 4 + 6(4)

b= 24 + 4

b = 28

Then

y = -6x + 28

write the equation in standard form ax + by = c:

y = -6x + 28

6x + y = 28

8 0
4 years ago
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