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4 years ago

HELP! I will mark you the brainiest!

Mathematics

2 answers:

Ymorist [56]4 years ago

6 0

#5: cost: y
Number of beads: x
y=0.48*x
So for 4 beads: 1.92
for 5 beads: 2.4

#6: the x th term in the sequence is y
y=17-2x
The 10th term is -3

andrezito [222]4 years ago

3 0

Answer:

4 dozen- 1.94

5 dozen- 2.40

---------------

9 dozen - 4.32

10 dozen- 4.80

Step-by-step explanation:

The rate is 0.48, each dozen is 0.48 and as the dozens add up, you just add 0.48 to the previous dozen to get the next one.

Your expression would look like this:

x + 0.48 = y

x being the previous dozen and the y being the next one after adding 0.48

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Please please help! I'm stuck on this

Phantasy [73]

Answer:

A'(-4 , 10)

B'(-4, 12)

C'(0, 12)

D'(0, 10)

Step-by-step explanation:

Given in the question are 4 coordinates of Quadrilateral ABCD

A(−2, 2)

B(−2, 4)

C(2, 4)

D(2, 2)

The rule is (x − 2, y + 8), that means

the translation is 2 units to the left and 8 units up

Applying the rule of the translation

Step1

A(-2, 2) = A'(-2-2 , 2+8) = A'(-4 , 10)

Step 2

B(−2, 4) = B'(-2-2 , 4+8) = B'(-4, 12)

Step 3

C(2, 4) = C'(2-2 , 4+8) = C'(0, 12)

Step 4

D(2, 2) = D'(2-2 , 2+8) = D'(0, 10)

Describe what characteristics you would find if the corresponding vertices were connected with line segments.

If point A was connected to point A', point B was connected to point B',point C was connected to point C', point D was connected to point D' then all of these line will be parallel to each other, since they were all transformed by the same amount (x-2, y+8).

5 0

3 years ago

You are given that cos(A)=−5/13, with A in Quadrant II, and sin(B)=7/25, with B in Quadrant II. Find cos(A+B). Give your answer

blsea [12.9K]

The value of cos(A+B) is 36/325.

<h3>What is Trigonometry?</h3>

The branch of mathematics concerned with specific functions of angles and their application to calculations.

Given:

cos(A)=−5/13

sin(B)=7/25

Now Using identity,

sin²A + cos² A= 1

sin A= √1 - cos² A

sin A = √1- 25/169

sin A= √144/169

sin A= 12/13

Again,

sin²B + cos² B= 1

cos B= √1 - sin² B

cos B = √1- 49/625

cos B= √576/625

cos B= -24/25

Now,

cos (A +B) = cos A cos B - sin A sin B.

= -5/13* (-24/25) - 12/13* 7/25

= 120/325 - 84/325

= 36/325

Hence, the value of cos (A + B) is 36/325.

Learn more about this concept here:

brainly.com/question/17056960

#SPJ1

3 0

2 years ago

How do you find the diameter of a circle if the circumference was given to you

pochemuha

Answer:

To find the circumference is Pi(r)^2 so reverse that to get the beginning statement

Step-by-step explanation:

6 0

3 years ago

A fish swims upstream a distance of 16 miles in a river with a current of 3 miles per hour. The fish returns swimming

arlik [135]

Answer:

9 mph = the speed in still water

Step-by-step explanation:

Let r = the speed in still water

Then the speed going down stream is r + 3

and the speed going upstream is r - 3

d = rt or t = d/r

time going downstream is 16/(r + 3) and time going upstream is 16/(r - 3)

The total time was 4 hours, so

$\frac{16}{r + 3} + \frac{16}{r - 3} = 4$ Multiply thru the equation by (r + 3)(r - 3)

Then 16(r - 3) + 16(r + 3) = 4(r + 3)(r - 3)

16r - 48 + 16r + 48 = $4r^{2}$ - 36

$4r^{2}$ - 36 = 32r

$4r^{2}$ - 32r - 36 = 0

$4(r^{2} - 8r - 9) = 0$

4(r - 9)(r + 1) = 0

r = 9 or -1

But a rate of speed cannot be negative, so x ≠ -1

So, r = 9 mph = the speed in still water

7 0

3 years ago

2(9+10r)-14 please help

Fittoniya [83]

Answer:

$20r+4$

7 0

3 years ago