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3 years ago

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Mathematics

1 answer:

Ulleksa [173]3 years ago

7 0

Answer:

3 ÷ 8

Step-by-step explanation:

1. A fraction has two parts: a numerator and a denominator. The numerator is the dividend (the number that is to be divided by the divisor), and the denominator is the divisor (the number that is divided into the dividend).

2. Given the information above, we know that 3 is the numerator, and 8 is the denominator. This means 3 ÷ 8 = 3/8.

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There are 15 cards numbered 1 through 15. What is the probability that you choose a 5 or a 9?

skelet666 [1.2K]

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3 years ago

The Key Club is selling nachos at the football game to raise money for the club's activities. The club received good prices for

natta225 [31]

150% is the percent markup of the price based on the cost.

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Cost : 0.50
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3 years ago

Write a power that has a value greater than 140 and less than 145.

Pachacha [2.7K]

Answer:

$12^{2}$

Step-by-step explanation:

To find: a power that has a value greater than 140 and less than 145

Solution:

Take $x=12^{2}$

Here,

$12^{2}=144$ and $140$

That is $140$

Therefore,

$12^{2}$ has a value greater than 140 and less than 145.

3 0

3 years ago

Kayla wants to find the width, AB, of a river. She walks along the edge of the river 65 ft and marks point C. Then she walks 25

AlladinOne [14]

Answer:

Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles

Part B) The width of the river is about $39\ ft$

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent

Part A) we know that

In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent

m<DCE=m<ACB -----> by vertical angles

m<EDC=m<ABC -----> is a right angle

m<DEC=m<CAB -----> the sum of the internal angles must be equal to 180 degrees

Part B) we know that

The triangles ABC and EDC are similar -------> see Part A

therefore

$\frac{BC}{DC}=\frac{AB}{DE}$

substitute the values and solve for AB

$\frac{65}{25}=\frac{AB}{15}$

$AB=15*(\frac{65}{25})=39\ ft$

8 0

3 years ago

Find x (x+13)(x-7)=0

alex41 [277]

So for this, we will be applying the zero product property, which is "if a x b = 0, then either a = 0 or b = 0 or both a and b = 0". In this case, a = x + 13 and b = x - 7. Solve them separately:

$x+13=0\\ x=-13\\ \\ x-7=0\\ x=7$

Your answer is x = -13 and 7.

7 0

3 years ago