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3 years ago

X2-3x-10=0 X2+7x+10=0 X2-5x-24=0 X2-8x+15=0 3x2-13x+4=0

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

3 0

Use the quadractic formula

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3 years ago

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Nimfa-mama [501]

Answer:

Step-by-step explanation:

Use definition of conditional probability:

$P(A|B)=\dfrac{P(A\cap B)}{P(B)},$

where

A = the student is a freshman,

B = the student is a male

From the table,

$P(B)=\dfrac{4+6+2+2}{4+6+2+2+3+4+6+3}=\dfrac{14}{30}=\dfrac{7}{15}\\ \\P(A\cap B)=\dfrac{4}{4+6+2+2+3+4+6+3}=\dfrac{4}{30}=\dfrac{2}{15}$

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3 years ago

A photo of a painting measured 13 x 17 inches the scale of the photo to the original painting is 1 inch to 3 inches. What is the

bulgar [2K]

Answer:

29 × 51 inches

Step-by-step explanation:

If the scale is ...

photo : painting = 1 : 3

then each dimension of the painting is 3 times the corresponding dimension of the photo. The painting is (3×13) by (3×17) inches, or 39 × 51 inches.

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3 years ago

Jack cuts a pie into 4 equal parts. The pieces are called _______ of the pie

djyliett [7]

Fractions of the pie?

7 0

3 years ago

Read 2 more answers

Factor the expression.

tiny-mole [99]

B. (k+10f)(k-5f) you can tell in 2 ways. 1. if the second sign is neg then the signs in the factors are going to be one neg and one positive so that knocks out C and D. Then you look at the second term and since the 5 is positive then the 10 has to be positive so you end up with a positive 5kf.

The second way is to FOIL them out. When you check B you get $k^{2} -5kf+10kf- 50f^{2}$ combine your like terms and you have your original expression of $k^{2} +5kf-50 f^{2}$

Hope that helps

3 0

3 years ago