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Nimfa-mama [501]

3 years ago

6

Which unit (mm, cm, m, or km) would be the most appropriate for each measurement? a Distance across Lake Michigan b Length of a

spoon c Thickness of an envelope d Height of a building

1 answer:

Sveta_85 [38]3 years ago

8 0

Distance across a lake would be km (lakes are usually pretty big)
Length of a spoon (cm)
Thinkness of envelope (mm)
Hight of building (m)

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The difference of four times a number and nine is 27. Find the number.

Dmitry [639]

Answer: the number is 9

Explanation:
4x - 9 = 27

Add 9 to both sides:
4x = 36

Divide both sides by 4:
x = 9

3 0

2 years ago

Write the equation of the line that passes through (−3, 5) and (2, 10) in slope-intercept form

BigorU [14]

Slope = (10 -5)/(2+3) = 5/5=1

y = mx + b
5 = 1(-3) + b
b =8

so equation y = x +8

answer: <span>y = x + 8(first choice)</span>

8 0

3 years ago

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What is the slope of the line that passes through the points (-2,7) and (2,-5) in simplest form ?

creativ13 [48]

Its $m=\dfrac{\Delta y}{\Delta x}=\dfrac{7-(-5)}{-2-2}=\dfrac{12}{-4}=\boxed{-3}$ .

Hope this helps.

6 0

2 years ago

six times jason collection of books and one third of nathan collection add up to 134 books. one third of jason collection and na

raketka [301]

Answer:

j = 21 and n = 14

Step-by-step explanation:

we have the equations:

6j + n/3 = 134

j/3 + n = 31

54j + 3n = 1206

j + 3n = 93

53j = 1113

j = 21

(21)/3 + n = 31

7 + n = 31

n = 14

6 0

3 years ago

X^2-5x=14 solve for x

elixir [45]

Answer:

x=7, -2.

Step-by-step explanation:

x^2-5x=14

x^2-5x-14=0

factor out the trinomial,

(x-7)(x+2)=0

zero property,

x-7=0, x+2=0,

x=0+7=7,

x=0-2=-2

8 0

2 years ago

Read 2 more answers