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ValentinkaMS [17]
3 years ago
7

Round 3,940 the nearest hundred

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0
Rounded to the nearest Hundred. 3900
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Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21
yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to -4x+7y=21.

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

-4x+7y=21

Slope of this line is

m_1=-\dfrac{\text{Coefficient of x}}{\text{Coefficient of y}}

m_1=-\dfrac{-4}{7}

m_1=\dfrac{4}{7}

Product of slope of two perpendicular lines is -1.

m_1\times m_2=-1

\dfrac{4}{7}\times m_2=-1

m_2=-\dfrac{7}{4}

Now, slope of required line is -\dfrac{7}{4} and it passes through (1,-2). So, the equation of line is

y-y_1=m(x-x_1)

where, m is slope.

y-(-2)=-\dfrac{7}{4}(x-1)

4(y+2)=-7(x-1)

4y+8=-7x+7

4y+7x=7-8

7x+4y=-1

Therefore, the equation of required line is 7x+4y=-1.

7 0
3 years ago
Solve the following equation for g: 2(g - h) = b + 4
DaniilM [7]

Answer:

g = \frac{b+4+2h}{2}

Step-by-step explanation:

Given

2(g - h) = b + 4 ← distribute parenthesis on left side

2g - 2h = b + 4 ( add 2h to both sides )

2g = b + 4 + 2h ( divide both sides by 2 )

g = \frac{b+4+2h}{2}

6 0
4 years ago
A box is 12 cm wide 12 cm long and 15 cm tall what is the total surface area of 4 such boxes
Mnenie [13.5K]
Surface area = 2(12*12+15*12+15*12) = 1008

1008 * 4 = 4032
4 0
3 years ago
Which data set is the most spread from its mean?<br>14. 26 24 28<br>22 16 18 36<br>24 19 27.25​
xenn [34]

Answer:

22 16 18 36

Step-by-step explanation:

4 0
4 years ago
Wesley wants to have at least $50 to spend each day of his 7-day vacation. He plans to save $30 each month for 12 months. Which
aleksklad [387]

Answer:

i cant choose any that applies to this question because there is no picture added to it and there are no choices to choose from. If i were to solve it though, it would be; yes, he will save enough money for his vacation.

Step-by-step explanation:

I know he would have enough--and in this case more than enough, because since he's planning to save $30 for a whole year just for $50, when he could simply make $60--which is in fact more than needed for his goal-- in just 2 months. If he were to stick with his plan though, he'd make $360. I got that by multiplying 30 by 12.

3 0
3 years ago
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