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german
4 years ago
8

What are the first four terms of the sequence given by the formula below? an= -2n + 4

Mathematics
2 answers:
netineya [11]4 years ago
6 0
In order to solve this problem, We need to substitute the first four numbers (1,2,3,4) for n. After this we calculate:
First item:
a1= -2*1 + 4=-2+4=2
Second item:
a2= -2*2 + 4 =-4+4=0
Third item:
a3= -2*3 + 4 =-6+4=-2
Forth item:
a4= -2*4 + 4 =-8+4=-4

So the first 4 items are: 2,0,-2,-4..




lubasha [3.4K]4 years ago
3 0

Answer:

Sequences and Series Online Practice Conexus review:

C

B

A

D

B

C

B

C

C

B

A

D

B

A

A

100%, Hope this helps Y'all:)

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The point (1,1) is the image under the translation (x,y)-> (x+3,y-3). What is the preimage of this point?
wel

Answer:

(-2,4)

Step-by-step explanation:

\text{pre-image}->\text{image}

(x,y)->(x+3,y-3)

(x,y)->(1,1)

This implies (x+3,y-3)=(1,1).

This means x+3=1 and y-3=1.

Subtract 3 on both sides for first equation: x=1-3=-2.

Add 3 on both sides for the second equation: y=1+3=4.

So the pre-image (x,y) is (-2,4) if the image is (1,1).

Let's check:

(x,y)->(x+3,y-3)

(-2,4)->(-2+3,4-3)

(-2,4)->(1,1)

So the solution has been checked and verified.

6 0
3 years ago
Evaluate each expression when a= - 4 and b= 3 ab
Andrews [41]

Answer:

-12

Step-by-step explanation:

<u>Step 1:  Substitute</u>

ab -> -4 for a and 3 for b

(-4) * (3)

<em>-12</em>

Answer:  -12

6 0
4 years ago
How do I solve: x^2+3=84.
balandron [24]

Answer:

x=9, x=-9

Step-by-step explanation:

subtract 3 from both sides

x^2=81

then squareroot both sides (remember that there is a positive and negative solution!)

x=9, x=-9

7 0
3 years ago
Read 2 more answers
What is an equation for this line?
Sedbober [7]

Answer:

The equation of the line is y=-x

Step-by-step explanation:

To find the equation for a line, we need to know 2 points.

One of the points is (0,0) because it goes through the origin.  Another point is (5,-5).  We can calculate the slope because we have 2 points using the formula.

m = (y2-y1)/(m2-m1)

m = (-5-0)/(5-0)

m = -5/5

m=-1

The slope is -1

We know the y intercept (where it crosses the y axis) is 0.  Using the slope intercept form of a line

y = mx+b

y =-1x+ 0

y = -x


The equation of the line is y=-x

6 0
3 years ago
Hii please please help i’ll give brainliest if you give a correct answer tyyyyy
bezimeni [28]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

40%

Step-by-step explanation:

6 apples out of 15 fruits = \frac{6}{15}

\frac{6}{15} is equivalent to \frac{2}{5}

\frac{2}{5} is equivalent to 40%

<em>So your answer is 40%</em>

<em />

I hope this helps!

- sincerelynini

7 0
3 years ago
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