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3 years ago

Use the base ten system and mental math to find the products. of 40x50=

Mathematics

2 answers:

love history [14]3 years ago

7 0

Answer:

2000

Step-by-step explanation:

40 x 50 can be easily done by multiplying 4 and 5 which is 20 and adding the remaining 0's which is 2000

Fantom [35]3 years ago

4 0

Answer:

2000

Step-by-step explanation:

(4x5) x 100

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Given h(x)=-2x+1,find h(-6)

Vesna [10]

Answer:

h = -11

Step-by-step explanation:

x=-6 so...

2*(-6)+1= -11

h= -11

7 0

3 years ago

AB and BC form a right angle at point B if A = (-3,-1) and B = (4,4) what is the equation if BC

sergejj [24]

Answer:

$7x+5y-48=0$

Step-by-step explanation:

Refer the attached figure .

We are given a line AB

Point A $=(x_1,y_1) = (-3,-1)$

Point B $=(x_2,y_2) = (4,4)$

Formula for slope 'm' when two points are given :

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting thew values

$m=\frac{4-(-1)}{4-(-3)}$

$m=\frac{5}{7}$

Since we are given that AB is perpendicular to BC

So, By property - perpendicular slopes are negative reciprocals of each other.

$\Rightarrow m_1\times m_2 =-1$

$\Rightarrow \frac{5}{7}\times m_2 =-1$

$\Rightarrow m_2 = \frac{-7}{5}$

So, Slope for line BC : $m_2 = \frac{-7}{5}$

Point B = (4,4)

Formula of equation of line : $y-y_1=m(x-x_1)$

$y-4=\frac{-7}{5}(x-4)$

$5(y-4)=-7(x-4)$

$5y-20=-7x+28$

$7x+5y-20-28=0$

$7x+5y-48=0$

Hence the equation of line BC : $7x+5y-48=0$

5 0

3 years ago

Choose the best estimate for the multiplication problem below. 91 x 61

Umnica [9.8K]

Answer:

B 5400

Step-by-step explanation:

3 0

3 years ago

Three girls search for geodes in the desert. corinne collected 11 1/8 pounds, ellen collected 4 5/8 pounds, and leonda collected

jeyben [28]

9 3/4. Is the answer

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3 years ago

Solve the inequality for n 14

makkiz [27]

Answer:

14n

Step-by-step explanation:

just rearrange the number with the variable

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3 years ago