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3 years ago

What is the answer 3x+4-5y+6x? I got 9x+4-5y

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

7 0

That answer is correct, 9x + 4 -5y. Only like terms are the x terms and we add 3 and 6 together.

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Evaluate 15 divide by k when k = 3

Galina-37 [17]

You just divide 15 by 3 and that equals 5

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3 years ago

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A restaurant uses 150 grams of ham on each sub sandwich that it sells. If the restaurant sells 50 sub sandwiches, how much ham w

Morgarella [4.7K]

If the restaurant uses 150 grams and then sells 50 sub sandwiches

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1 year ago

Find the 8th term of the geometric sequence whose common ratio is 2/3 and whose first term is 7

motikmotik

Answer:

The 8th term of the sequence is 896/2187.

Step-by-step explanation:

We want to find the 8th term of a geometric sequence whose common ratio is 2/3 and whose first term is 7.

We can write a direct formula. Recall that the direct formula of a geometric sequence is given by:

$\displaystyle x_{n} = a\left(r\right)^{n-1}$

Where a is the initial term and r is the common ratio.

Substitute:

$\displaystyle x_{n} = 7\left(\frac{2}{3}\right)^{n-1}$

To find the 8th term, let n = 8. Substitute and evaluate:

$\displaystyle \begin{aligned} x_{8} &= 7\left(\frac{2}{3}\right)^{(8) - 1} \\ \\ &= 7\left(\frac{2}{3}\right)^{7} \\ \\ &= 7\left(\frac{128}{2187}\right) \\ \\ &= \frac{896}{2187} = 0.4096...\end{aligned}$

In conclusion, the 8th term of the sequence is 896/2187.

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3 years ago

16. Find the value of x* 8. 2x-6 A 10 B 7 C -7 D -10

Vikki [24]

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$2x - 6 = 8$

Add sides 6

$2x - 6 + 6 = 8 + 6$

$2x = 14$

Divide sides by 2

$\frac{2x}{2} = \frac{14}{2} \\$

$x = 7$

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The correct answer is (( B )) .

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5 0

3 years ago

Read 2 more answers

Can someone help me with this

Alexxandr [17]

Answer:

Step-by-step explanation:

the perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is the length and w the width ) , then

P = 2(3 $\sqrt{15}$ ) + 2( $\sqrt{15}$ ) ← distribute both parenthesis )

= 6 $\sqrt{15}$ + 2 $\sqrt{15}$

= 8 $\sqrt{15}$

5 0

2 years ago