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Inga [223]
3 years ago
10

Simplify the expression. -(4x+7)

Mathematics
2 answers:
zheka24 [161]3 years ago
5 0


-4x-7 also in case you want to know

7= -4x

x= -4/7

ratelena [41]3 years ago
3 0
-(4x + 7)
-1(4x + 7)
-1(4x) - 1(7)
-4x - 7
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Find the ninth term of the sequence if the second term is 12 and the fourth term is 16/3.
aleksklad [387]

with the assumption this is a geometric sequence and thus it as an "r" common ratio, so we know that the 3rd term must be 12 * r and the 4th term must be 12 * r * r, so let's make a quick table

\begin{array}{rll} term&value\\ \cline{1-2} a_2&12\\ a_3&12\cdot r\\\cline{1-2} a_4&(12\cdot r)r\\ &12r^2\\ &\frac{16}{3}\\\cline{1-2} a_5&12r^3\\ a_6&12r^4\\ a_7&12r^5\\ a_8&12r^6\\ a_9&12r^7 \end{array}\qquad \implies \begin{array}{llll} 12r^2=\cfrac{16}{3}\implies r^2=\cfrac{16}{12\cdot 3}\implies r^2=\cfrac{4}{9}\\\\\\ r=\sqrt{\cfrac{4}{9}}\implies r=\cfrac{\sqrt{4}}{\sqrt{9}}\implies r=\cfrac{2}{3} \end{array} \\\\[-0.35em] ~\dotfill

a_9=12\left( \cfrac{2}{3} \right)^7\implies a_9=12\cdot \cfrac{128}{2187}\implies a_9=\cfrac{512}{729}

6 0
2 years ago
Use the discriminant to determine the type and number of solutions.
Nata [24]

The type and number of solutions is (b) two imaginary solutions.

<h3>How to determine the type and number of solutions?</h3>

The equation is given as:

3x² + 5x + 5 = 0

A quadratic equation can be represented as:

ax^2 + bx + c = 0

Where, the discriminant (d) is

d = b^2 - 4ac

So, we have

d = 5^2 - 4 * 3 * 5

Evaluate

d = -35

The value of d is negative

This means that the equation has only imaginary solutions

Hence, the type and number of solutions is (b) two imaginary solutions.

Read more about number of solutions at

brainly.com/question/25275758

#SPJ1

5 0
1 year ago
Write the word sentence as an equation.
harkovskaia [24]

Answer:

5 = 1/4c

Step-by-step explanation:

5 0
2 years ago
Can you help me solve this?
marishachu [46]

Answer:

the answer is seven

Step-by-step explanation:

3 0
3 years ago
According to the natural sequence of exponents, how would you explain 2-3
Vikentia [17]
We have a base 2 with an exponent power raised to -3
so in order to have a positive exponent factor, we take reciprocal of the number1/2^3.
now that the base has a positive exponent number, we simply multiply it the times on the exponent number, so: 1/2*2*2 = 1/8

hope this help
5 0
3 years ago
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