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Ivenika [448]
3 years ago
10

PLEASE HELP THIS IS ALL IT GIVES ME I HOPE YOU COULD DK THE ANSWER WITH JUST THIS BUT PLEASE I NEED HELP

Mathematics
2 answers:
AleksandrR [38]3 years ago
6 0
You’re answer is 21


7(3)= 21 I hope I’m right :))
Rainbow [258]3 years ago
3 0

Answer:

f (3) = 21

Step-by-step explanation:

To answer, we know that x in f (x) equals 3, so in f (x) = 7x, we simply substitute x with 3:

f (3) = 7 (3)

Now multiply:

f (3) = 21

21 is your answer

Hope this helps :)

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What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701?
Tema [17]
Answer: The sum of the series is 2,548.

In a geometric series, the values are being multiplied by a constant rate. In this series, we are started at 7 and multiplying by 3.

Our series would be:
7   21   63   189   567   1701

If we add up those values, we have a total of 2,548.
4 0
3 years ago
Find the perimeter of a regular heptagon with consecutive vertices at "A" (-2,-5) and "B" (1,-9)
weqwewe [10]

Answer:

Perimeter is 35 units.

Step-by-step explanation:

A heptagon has 7 equal sides.

Given the length of two consecutive vertices, A(-2-5) and B(1,-9).

We can find the length of AB and multiply by 7.

Recall the distance formula;

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

The length of AB is

|AB|=\sqrt{(-2-1)^2+(-5--9)^2}

|AB|=\sqrt{(-3)^2+(4)^2}

\Rightarrow |AB|=\sqrt{9+16}

\Rightarrow |AB|=\sqrt{25}

\Rightarrow |AB|=5\:units

Therefore the perimeter is 7\times 5=35\:units.

7 0
3 years ago
5×12÷[-12÷{15+(4-13)}]​
Elina [12.6K]

Answer:

=5×12÷[-12÷{15+(-9)}]

=5×12÷[-12÷6]

=5×12÷(-2)

=-30

Step-by-step explanation:

8 0
3 years ago
What is the measurement of Angle JKL? *
nataly862011 [7]

Answer:

Option (1)

Step-by-step explanation:

From the triangles given in the picture,

Since, JK ≅ KL [Given]

JM ≅ ML [Given]

KM ≅ KM [Reflexive property of congruence]

ΔJMK ≅ ΔLMK [SSS property of congruence]

Therefore, ∠JKM ≅ ∠LKM [CPCTC]

(2x + 5) = (3x - 6)

3x - 2x = 5 + 6

x = 11

m∠JKL = m∠JKM + m∠LKM

            = (2x + 5) + (3x - 6)

            = 5x - 1

            = 5(11) - 1

             = 54

Option (1) will be the answer.

4 0
3 years ago
A retailer purchased a set of four plates at a cost of $45.00 and plans to sell them for $75.00. What is the percent of markup b
12345 [234]

Answer:  c just did it

Step-by-step explanation:

5 0
3 years ago
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