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2 years ago

True or False. If False explain your reason

Mathematics

1 answer:

faust18 [17]2 years ago

6 0

1. false because it has only 2 triangular faces
2. true
3. true
4. i think its false, it has four
5.

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What is the simplified form of the quantity of x plus 6, all over the quantity of x plus 4 + the quantity of x minus 3, all over

Rina8888 [55]

$\frac{x+6}{x+4} +\frac{x-3}{3}$

make denomenators the same

we have
x+4 and 3
times the fraction with x+4 in denomenator with the fraction 3/3
times the fraction with 3 in denomenator with the fraction x+4
we get
$\frac{3x+18}{3x+12} +\frac{x^2+x-12}{3x+12}$
since common denoms, can add them to get
$\frac{3x+18+x^2+x-12}{3x+12}$
$\frac{x^2+4x+6}{3x+12}$
that is simplified

7 0

2 years ago

4. A credit card company applies a 6% fee on all transactions under $10. You purchased coffee for $4.80. What fee amount will be

Akimi4 [234]

Answer:

The fee amount applied to my bill will be $0.288 or 28.8 cents.

Step-by-step explanation:

The coffee cost under $10; therefore, a 6% fee will be applied.

6% of $4.8 is

$\dfrac{6\%}{100\%} * \$ 4.80$

$0.06*\$4.80 = \$0.288.$

Thus, the fee amount applied to my bill will be $0.288 or 28.8 cents.

6 0

2 years ago

Select the two values of x that are roots of this equation 2x2+7x+6=0

son4ous [18]

Answer:

I solved the question in three methods factorization, completing the square and quadratic equation . the continuation of completing the square is on the next page titled page 3

hope it helps

6 0

2 years ago

Solve the system of linear equations by elimination. <br> 9x−2y=34 <br> 5x+2y=−6

slava [35]

Answer:

x = 2

y = -8

Step-by-step explanation:

9x−2y=34 -------------------(I)

5x+2y=−6 -------------------(II)

Add equation (I) & (II) and so y will be eliminated and we could find the value of x.

(I) 9x - 2y = 34

(II) <u>5x + 2y = -6</u> {add}

14x = 28

x = 28/14

x = 2

Plug in x = 2 in equation (I)

9*2 - 2y = 34

18 - 2y = 34

-2y = 34 - 18

-2y = 16

y = 16/-2

y = -8

4 0

2 years ago

Read 2 more answers

What is the slope of y=2x+1

Eva8 [605]

Answer:

Step-by-step explanation:

it is always the number before x, or the given variable

3 0

2 years ago