All categories

3 years ago

Suppose y = 2x +10. Find y if x = -2.

Mathematics

2 answers:

liubo4ka [24]3 years ago

5 0

If x = -2, y = 6.

To solve this quesiton, we need to find the value of y if x is equal to -2. We can do this by substiuting the value of x and then solving.

y = 2 (-2) + 10

y = -4 + 10

y = 6

PtichkaEL [24]3 years ago

3 0

Hi!

Plug in the value of x, and solve.

y = 2 * -2 + 10

Solve

y = -4 + 10

y = 6

The answer is y = 6

Hope this helps! :)

-Peredhel

You might be interested in

Which equation could be used to find the nth term in the sequence below?

Pachacha [2.7K]

Answer:

Step-by-step explanation:

The sequence jumps by intervals of 3 each time. This tells us that the answer has 3n in it. Then, we know that the first value is two, which is 1 less than 3. This means the answer is a, 3n-1.

8 0

2 years ago

Read 2 more answers

Arithmetic sequences et sn} be an arithmetic sequence that starts with an initial index of 0. The initial term is 3 and the comm

navik [9.2K]

Answer:

(a) The value of $s_z$ is (z+1)(3-z).

(b) The next term in the sequence is -2.

Step-by-step explanation:

(a)

It is given that arithmetic sequence that starts with an initial index of 0.

The initial term is 3 and the common difference is -2.

$a_0=3$

$d=-2$

We need to find the value of $s_z$ .

$s_z=\sum_{n=0}^{n=z}(a+nd)$

where, a is initial term and d is common difference.

$s_z=\sum_{n=0}^{n=z}(3-2n)$

The sum of an arithmetic sequence with initial index 0 is

$s_n=\frac{n+1}{2}[2a+nd]$

where, a is initial term and d is common difference.

Substitute n=z, a=3 and d=-2 in the above formula.

$s_z=\frac{z+1}{2}[2(3)+z(-2)]$

$s_z=\frac{z+1}{2}[2(3-z)]$

$s_z=(z+1)(3-z)$

Therefore the value of $s_z$ is (z+1)(3-z).

(b)

The given arithmetic sequence is

7, 4, 1, ...

We need to find the term in the sequence.

In the given arithmetic sequence the first term is

$a=7$

The common difference of the sequence is

$d=a_2-a_1\Rightarrow 4-7=-3$

The first term is 7 and common difference is -3.

Add common difference in last given term, i.e., 1, to find the next term of the sequence.

$1+(-3)=1-3=-2$

Therefore the next term in the sequence is -2.

3 0

3 years ago

What is the equation of the line whose y intercept is 3 and the slope it 1? A) y=x-3 B) y=x+3 C) y=3x+1

Rudiy27

It is BBBBBBBBBBBBBBBBBB

6 0

3 years ago

A garden table and a bench cost 607 combined. The garden table costs 43 less than the bench. What is the cost of the bench?

Paha777 [63]

Answer is 564

607-40=567

567-3=564

5 0

3 years ago

Read 2 more answers

Jane wants to save money to buy a motorcycle. She invests in an ordinary annuity that earns 4.2% interest, compounded quarterly.

Sauron [17]

Answer:

she need to pay is $550.40

Step-by-step explanation:

given data

interest = 4.2 % compounded quarterly = 0.042 / 4 = 0.0105

future value = $7000

time = 3 year = 3 × 4 = 12 months

to find out

How much money she need to pay

solution

we will apply here formula for future value for compound quarterly

that is

future value = principal × $\frac{(1+r)^{t} -1 }{r}$ .............1

put here all these value

future value = principal × $\frac{(1+r)^{t} -1 }{r}$

7000 = principal × $\frac{(1+0.0105)^{12} -1 }{0.0105}$

principal = 550.40

so she need to pay is $550.40

3 0

2 years ago