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3 years ago

Can someone please help me with the blank problems and also with these

Mathematics

1 answer:

zaharov [31]3 years ago

7 0

In order to convert percents and decimals to fractions, take the percentage number, or the numbers to the right of the decimal place, and put it over 100. If possible, simplify from there.

Example:
32% = 32/100 = 8/25
.56 = 56/100 = 28/50 = 14/25

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Need Help Badly<br>What is the solution

Kamila [148]

Sqrt(1-3x)=x+3
[sqrt(1-3x)]^2=(x+3)^2
1-3x=(x+3)(x+3)
1-3x=x^2+6x+9
-3x=x^2+6x+8
0=x^2+9x+8

The answers are -1 and -8 BUT, we have to plug them back into the original equation to make sure we don't get a negative under the square root sign.

After doing this, we realize that only -1 works, so the answer is x=-1

Sorry that this took forever to answer. I was thinking of a good way to explain this, and if you need any further explanation, message me:)

Best wishes:)

5 0

3 years ago

which one of the following examples represents a repeating decimal A. 1.111114 B. 0.777777 C. 4.252525 D. 0.123123

elena-s [515]

Actually, i think something is missing here:

You need either a parenthesis or some dots at the end to determine this. A repeating decimal can have one repreating digit:

0.(7): 0.777777...

two:

0.(45): 0.45454545454545....

or more: so potentially all of them can be repeating, even a!

it could be: 1.(111114)

or: 1.111114111114111114111114111114111114111114111114111114111114111114111114111114...

proably B. is the most typical of repeating decimals (choosed this one if you have to), but in reality, you need more information... did you copy the question exactly?

7 0

4 years ago

Sindrei [870]

Answer:

where is the diagram

4 0

3 years ago

Julie used her gift card for the local coffee shop to buy iced teas for herself and five friends. After she and one friend place

valentina_108 [34]

Answer:

One glass of iced tea cost $2.72

Step-by-step explanation:

Let,

x be the amount of gift card.

y be the amount of one glass of iced tea.

According to given statement;

Julie and her friend bought tea and remaining balance was $14.85

x - 2y = $14.85 Eqn 1

All the six members bought tea and remaining balance was $3.97

x - 6y = $3.97 Eqn 2

Subtracting Eqn 2 from Eqn 1

$(x-2y)-(x-6y)=14.85-3.97\\x-2y-x+6y=10.88\\4y=10.88$

Dividing both sides by 4

$\frac{4y}{4}=\frac{10.88}{4}\\y=2.72$

Hence,

One glass of iced tea cost $2.72

4 0

3 years ago

Plz help i have to submit in 20 minutes !!!

amm1812

Answer:

Step-by-step explanation:

1. a). Hypotenuse² = (Leg 1)² + (Leg 2)²

h² = 10² + 24²

h = √676

h = 26

(b). Hypotenuse² = (Leg 1)² + (Leg 2)²

(25)² = (15)² + (leg 2)²

Leg 2 = √(625 - 225)

= √400

= 20

(c). Hypotenuse² = (Leg 1)² + (Leg 2)²

h² = 4² + 6²

h = √(16 + 36)

h = √52

h = 2√13

(d). Hypotenuse² = (Leg 1)² + (Leg 2)²

(14)² = (Leg 1)² + 7²

Leg 1 = √(196 - 49)

= √147

= 7√3

2). Hypotenuse² = (Leg 1)² + (Leg 2)²

Leg 1 = leg 2 = 7 units [Since, triangle is an isosceles triangle]

h² = 7² + 7²

h = √98

h = 7√2

Option (1) is the correct option.

3). Hypotenuse² = (Leg 1)² + (Leg 2)²

(26)² = (Leg 1)² + (10)²

Leg 1 = √(676 - 100) = 24

Area of a right triangle = $\frac{1}{2}(\text{Leg 1})(\text{Leg 2})$

= $\frac{1}{2}(24)(10)$

= 120 square units

Option (3) is the correct option.

8 0

3 years ago