3 years ago

Find the area of the triangle.

Mathematics

1 answer:

ira [324]3 years ago

5 0

Wait is this geometry?

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Kaitlyn is sharpening a pencil that is 19 cm. Each time she sharpens it goes down 2.5 cm. If she sharpens her pencil 4 times. Ho

Natasha2012 [34]

Answer:

9 cm

Step-by-step explanation:

2.5x4=10

7 0

3 years ago

sandra and her friend went to the candy store. each of them purchased a bag of jelly beans. sandra's bag weighed 1.25 pounds. He

Nuetrik [128]

You would subtract.

The question is asking who has more, so to find out, you need to take away the smaller amount from the bigger amount. (1.25-1.05)

So Sandra bought more candy. Hope this helps!

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3 years ago

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4n^(2)+4n=3 Please help with the work

Kaylis [27]

Answer:

n= 1/2 ( $\frac{1}{2}$ ) or (0.5)

AND

n= -3/2 ( $-\frac{3}{2}$ ) or (-1.5)

Step-by-step explanation:

4n^2+4n=3

step1: move 3 to the other side and make the equation equal to zero.

4n^2+4n-3=0

step2: factorise the equation.

(2n-1)(2n+3)=0

step3: make each bracket equal to zero.

2n-1=0

2n+3=0

step4: solve for n values.

1. 2n-1=0

(add 1 for both sides)

2n=1

(divide by 2 for both sides)

n= 1/2 ( $\frac{1}{2}$ ) or (0.5)

2. 2n+3=0

( subtract 3 for both sides)

2n=-3

(divide by 2 for both sides)

n= -3/2 ( $-\frac{3}{2}$ ) or (-1.5)

3 0

2 years ago

6. Find average of the following expressions (4-2x), (-7-3x), and (11x+6)

svetoff [14.1K]

Answer:

2x+1

Step-by-step explanation:

(4-2x), (-7-3x),(11x+6)

Add the three expressions

(4-2x)+ (-7-3x)+(11x+6)

Combine like terms

-2x-3x+11x+4-7+6

6x+3

Divide by the number of expressions which was 3

(6x+3)/3

2x+1

The average is 2x+1

7 0

3 years ago

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Best estimate of the total spent, not including tax 6.52 + 19.89 + 21.15

maw [93]

Answer:

47.56

Step-by-step explanation:

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3 years ago