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2 years ago

Bella says 18 is the same as 10 ones and 8 tens

Mathematics

2 answers:

ss7ja [257]2 years ago

7 0

Answer:

Bella is largely mistaken.

Step-by-step explanation:

What she described equals 90

Degger [83]2 years ago

7 0

Bella is wrong, 10 is in the ones place and 8 is the tens place.

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Given a+b=7 and a-b=3, find the following 3^a÷3^b

gulaghasi [49]

Answer:

Step-by-step explanation:

a + b = 7

a - b = 3

2a = 10

a = 5

b = 7 - 5

b = 2

3⁵ / 3² = 3³ using law of indices

3³ = 27.

3 0

2 years ago

Cost of an airplane flight increase from $250 to $260. What is the percentage increase?

Sedaia [141]

Answer:

Solution given:

Increase percentage= $\frac{260-250}{250}*100$ %

=4%

the percentage increase is 4%.

3 0

2 years ago

Read 2 more answers

Please Help!!! DUE NOW!

Alexxandr [17]

Answer: 37

Step by step explanation:

y+29+40+2y=180°( sum of angle in straight line)

or, y+2y+29+40=180°

or,3y+69=180

or,3y=180-69

or,3y=111

or,y=111/3

y=37

hope it helps

Good luck on your assignment

5 0

3 years ago

Write a simplified polynomial expression in standard form to represent the area of the rectangle below.

Burka [1]

Area of Rectangle = length times width
lets say length = 2x-4
width = x+5

Note: you can switch these around, width could be 2x-4 and length could be x+5, it doesnt matter.

With that being said:
length * width = area
(2x-4)(x+5)=area
FOIL (First Outer Inner Last)
$2x^{2}+10x-4x-20=area$
Simplify:
$x^{2}+6x-20=area$

3 0

3 years ago

Triangle PQR hAS vertices P (4,-1),Q(-2,7), and R (9,9). find an equation of the median from R

strojnjashka [21]

A median intersects at the midpoint of the opposite length. The midpoint is:

x,m = (4+-2)/2 = 1
y,m = (-1+7)/2 = 3

The midpoint is at (1,3). With this point and point R(9,9), the equation would be:

y = mx + b, where
m = (9 - 3)/(9 - 1) = 0.75
b is the y-intercept
Substituting any point,
3 = 0.75(1)+b
b = 2.25

Thus, the equation for the median is:

y = 0.75x + 2.25

7 0

3 years ago