4. If y = 5x – 3 and 3x - y = -1, what is the value of y?
A 2
B -1
C 7
D -8​

Answer:

Step-by-step explanation:

In triangle ADC,

b+50+60=180(sum of angles of triangle equals 180)

or,b=180-110

▪b=70

also,

In triangle ABD,

angleA = 30+50=80

now,

a+80+60=180(sum of angles of traingle equals 180)

or,a=180-140

▪a=40'

Ans.

Answer:

use a^2+b^2=c^2.

so u might have two answer one if u plug 17 and 12 as your a and b and solve for c

second is when you plug 12 as a and 17 as 17 qnd solve for b.

hope this helped

Step-by-step explanation:

pls mark brainliest

Answer:

C. $352.80

Step-by-step explanation:

Multiply 14 x 12 which you get 168..

Now Multiply again.. 168 x the number of how much is every square foot which is 2.10.. 168 x 2.10 = 352.8 ($352.80)

Answer:

1/2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Proportional relationship:

Using point on the graph (1, 0.5) to find the value of k:

Step-by-step explanation:

Robbie=

15%/100%=220

=33 movies

Rebecca=

10%/100%=220

11 movies

Robbie have 33 movies and Joshua have 11 movies

Thank you

Hope it helps.

Answer:

(1,5)

Step-by-step explanation:

You use the midpoint formula to solve this problem

The midpoint formula:

To solve for x: (x1+x2)÷2

To solve for y: (y1+y2)÷2

Answer:

this answer is -1.8

Step-by-step explanation:

because you add and subtract all of them

Answer:

0.9

Step-by-step explanation:

Basic angle =

[tex]cos { }^{ - 1} ( \frac{4}{5} ) = 36.870 \: degrees \\ [/tex]

Therefore,

[tex]theta = 180 + 36.870 = 216.87 \: degrees[/tex]

Therefore,

[tex] \sin( \frac{theta}{2} ) = \sin(108.435 ) = 0.9[/tex]

This might help

total surface area Stot = 42.5 ft2

lateral surface area Slat = 30 ft2

top surface area Stop = 6.25 ft2

bottom surface area Sbot = 6.25 ft2

but im thinking they would need 113.7 ft of rapping paper i many be totally wrong tho

Answer:

42.5

Step-by-step explanation:

To find how many square inches of wrapping paper he will need you need to find the area of each face of the box and add them all together.

Top and bottom face:

First, 2.5 times 2.5 equals 6.25. Multiply 6.25 times 2 since there is one for the top and bottom to get 12.5

Left, Right, front, and back face:

Multiply 2.5 by 3 to get 7.5, and multiply 7.5 by 4 to get 30 since there are four faces with the same area.

Final Step:

Now, just add all the areas of the faces calculated to recieve the answer of 42.5

30 + 12.5 = 42.5

Answer:

the account won't yield the same amount despite the same principal amount.

Step-by-step explanation:

To test this assertion :

Let principal = $1000

t = 1 year

Compound interest formula :

A = P(1 + r/n)^nt

P = principal ; r = rate, n = number of times interest is compounded per period ; t = time

Account A :

Rate = 4% annually

A = 1000(1 + 0.04/1)^1

A = 1000 * 1.04 = $1040

Account B:

Rate = 2% compounded semianually ; n = 12 /6 = 2

A = 1000(1 + 0.02/2)^1*2

A = 1000(1.01)^2

A = 1000 * 1.0201

A = $1020.1

From the result, the account won't yield the same amount despite the same principal amount.

Answer:

506π ft^2

Step-by-step explanation:

here's your solution

=> height of cylinder = 12 ft

=> radius of cylinder = 11 ft

=> surface area of cylinder = 2πr(h+r)

=> SA = 2*11(12+11)*π

=> SA = 22*23π

=> SA = 506π ft^2

hope it helps

Answer:

thank you

Step-by-step explanation:

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Answer:

8 units

Step-by-step explanation:

I can count

Answer:

6

Step-by-step explanation:

6 is the answer my guy

Answer:

36 (Answer D)

Step-by-step explanation:

There are 4 possible choices of main dish, 3 of sides and 3 of drinks.

All choices are independent, so this is independent probability.

The number of combinations is 4*3*3, or 36 (Answer D)

Answer:

A or C can be it because It is not b

Answer:

43.20

Step-by-step explanation:

I hope this is right !

Answer:  3.2 done

Step-by-step explanation:

I will do 4 and 5 only. Also, post one problem at a time.

Question 4

Measure of arc GJ = measure of the central angle, which in this case is 90 degrees. So, the measure of arc GJ = 90°.

Question 5

The measure of diameter HJ = 180 degrees.

We need to find the adjacent angle which I will call angle x.

So, x = 180° - 151° = 29 degrees.

Just like Question 4 above, the measure of 29 degrees is the central angle for arc HI.

As you know, HI = the measure of the central angle. So, the measure of arc HI = 29°.

Try the rest on your own.

As you do the rest, keep in mind that the measure of a circle in terms of degrees is 360 degrees. This will help you do the rest of the questions for circle B.

Answer:

7.5

Hope that helps!

Answer:

Width is 5

Step-by-step explanation:

Set up an equation

12x=60

divided both sides by 12

answer is 5

The width is 5

to check your answer multiply it by the length

12*5=60

Check Check

Answer:

60÷12=5 so the width is 5 if the length is 12.

Answer:

Decease in weight by 56.4%

Step-by-step explanation:

From 55 lb to 24 lb,

There is a decrease in the weight from 55 lb to 24 lb.

For the percentage decrease in weight,

Change in weight = 55 - 24

                              = 31 lb

Percentage change in weight = [tex]\frac{\text{Total change}}{\text{Initial value}}\times 100[/tex]

                                                  = [tex]\frac{31}{55}\times 100[/tex]

                                                  = 56.36%

                                                  ≈ 56.4%

Therefore, there is a decease in weight by 56.4%.

Answer:

16

Step-by-step explanation:

same explanation as last time accept its 3/4 into 4/3

Answer:

10 ÷ 16

Step-by-step explanation:

The computation is shown below

Given that

Paul required to buy 5 by 8 pound of peanuts

And, the scale at the store is in sixteenths

So, the measure that should be equivalent is

Here the denominator should be 16 so it should be multiplied by 2

= 5 ÷ 8 × 2 ÷ 2

= 10 ÷ 16

Answer: The swimmer is 26 ft (approximately) away from the lifeguard

Step-by-step explanation: Please refer you the attached diagram.

The lifeguard sitting on the platform is labeled as point P, and the swimmer down below is at point S. The point G is the point directly beneath the lifeguard. So, we have a right angled triangle PSG. Also the angle of depression is 18 degrees, so the angle of sight between the lifeguard and the ground is 72 degrees (that is, 90 - 18 = 72).

Having derived a right angled triangle with two sides and a reference angle, we can now use the trigonometric ratio which is;

CosP = Adjacent/Hypotenuse

The adjacent is the side that lies between the reference angle and the right angle (side PG), while the hypotenuse is the side facing the right angle (side PS). Hence;

Cos72 = 8/g

By cross multiplication we now have

g = 8/Cos72

g = 8/0.3090

g = 25.8899

Approximately, g = 26 ft.

Answer:

angle 6

hope that helps

Answer:

The answer is 1/3

Step-by-step explanation:

Yoh would get this because an dice has six sides. If two numbers are being offered, that's 2/6 , or 1/3 simplified.

Answer:

2/3, 2 to 3, 2:3

Step-by-step explanation:

a decimal - written as "."

Answer: decimal

Step-by-step explanation: decimal