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3 years ago

Find x for 2x^2-8x-24=0

Mathematics

1 answer:

Galina-37 [17]3 years ago

7 0

Answer:

X1= -2 X2=6

Step-by-step explanation:

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The length of the garden is 10 feet more than twice its width. The perimeter of the garden is 170 feet.

kumpel [21]

Answer:

Width is 25 ft

length is 60 ft

Step-by-step explanation:

Here, we want to calculate the length and width of the garden

From the question, we are told that the length is 10 ft more than twice its width

So if the width is x ft

Length = 2x + 10

Mathematically, the perimeter of a rectangle i s 2(l + b)

So;

2(x + 2x + 10) = 170

2(3x + 10) = 170

3x + 10 = 85

3x = 85-10

3x = 75

x = 75/3

x = 25 ft

length is;

2(25) + 10 = 50 + 10 = 60 ft

8 0

3 years ago

Complete the following chart. Number Absolute Value Number Line Diagram Different Number with same Absolute Value 1. -4 1-41 = 4

murzikaleks [220]

Answer:

the right answer is 568500.

5 0

3 years ago

A building 78 ft high casts a 195-ft shadow. Sarah casts a 10-ft shadow. The triangle formed by the building and its shadow is s

mylen [45]

This can be solved by similar triangles, which means you can cross multiply and divide. 78/195=x/10. 78(10)=780 and divide 780 by 195, you'll get the answer is 4. This means Sarah is 4 ft tall.

7 0

4 years ago

Two dice are rolled. What is the probability that the sum of numbers rolled is either 5 or 12?

Maksim231197 [3]

<u>ANSWER: </u>

The probability that sum of numbers rolled is either 5 or 12 is $\frac{5}{36}$

<u>SOLUTION: </u>

Given, Two dice are rolled.

We have to find what is the probability that the sum of numbers rolled is either 5 or 12

We know that, probability of an event = $\frac{\text { favourable outcomes }}{\text { total outcomes }}$

Now, total outcomes for two dices = 6 for 1st dice x 6 for 2nd dice = 6 x 6 = 36.

Now, favourable outcomes = sum is 5 + sum is 12

= 4[(1,4), (2,3), (3, 2), (4, 1)] + 1[(6,6)]

= 5 total favourable outcomes.

Now, probability = 5/36

Hence, the probability that sum is either 5 or 12 is 5/36.

5 0

3 years ago

An architect built a scale model of a

gladu [14]

Answer:

The right answer is D ( 12 in )

3 in - - - - > 45 feet

x in - - - - > 180 feet

-----------------------------

45*x=3*180 - - > 45*x=540 - - > x=540/45=12

4 0

3 years ago