please help!! i am super confused

Answer:

x = 18.75 Round to nearest tenth is 18.8

Step-by-step explanation:

We have, 80% × x = 15

or,  [tex]\frac{80}{100}[/tex]  × x = 15

Multiplying both sides by 100 and dividing both sides by 80,

we have x = 15 × [tex]\frac{100}{80}[/tex]

x = 18.75

If you are using a calculator, simply enter 15×100÷80, which will give you the answer.

Answer:

-1

3

[-4,-2] and [2,3] are increasing

[-2,-1] and [3,5] are decreasing

(-infinity,-4] and [-1,2] and [5,infinity)

Step-by-step explanation:

look at the graph

for 47. it's asking when the input (aka the X) is equal to 1, what is the output (aka the Y). so just go to the graph where X=1 and read the Y

Answer:

28:4=7

7×7=49

Step-by-step explanation:

jehsjtixzldlzdlzxzpx0ts0tyotyotypty

eb0ucudufpzc

Answer:

49cm^2

Step-by-step explanation:

a square has congruent sides so we can /4 to get each side when we are given the perimeter in such question.

28/4 = 7cm each side

area = L X W

= 7 x 7 = 49 cm^2

Answer:

Step-by-step explanation:

So first of all, you can rearrange your equations:

4x + 7x = 11 can be rearranged and simplified to x = 11/7

x = y + 1 can be rearranged to y = x - 1

Then you can graph them like normal by plugging in points. It should look like the following picture

Answer:

y = 80x + 5000

Step-by-step explanation:

Answer:

f(-12) = -13

Step-by-step explanation:

f(x) = x - 1

Let x = -12

f(-12) = -12-1

       = -13

Answer:

[tex]f(x) = x - 1 \\ f( - 12) = - 12 - 1 \\ \boxed{ f( - 12) = - 13}[/tex]

Answer:

the answer is 2

Step-by-step explanation:

this was so hard to answer I needed to have a bit of consideration

Answer:

i think it is 2

Step-by-step explanation:

2 groups of 1 means there is 2 in total

Answer

its G

Step-by-step explanation:

it 23

Answer:

It should be a. 0.004.

Step-by-step explanation:

I got this correct on Edge.

Answer:

OA

Step-by-step explanation:

that is the only one with the right numbers

Hello There!

y-y1=m(x-x1)

y-1=m(x-2)                       [tex]m=\frac{y2-y1}{x2-x1}[/tex]

                                                [tex]m=\frac{10-1}{5-2}[/tex]

                                                 [tex]m=\frac{9}{3} \\m=3[/tex]

y-1=3(x-2)

y-1=3x-6

y=3x-6+1

y=3x-5

hope it helps

Answer:

Step-by-step explanation:

Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).

Answer:

(a) 860, (b) 860, (c) 860 and 186

Step-by-step explanation:

(a) 860

860 ends with a zero or a five, 186 and 863 do not.

(b) 860

860 ends with a zero, 186 and 863 do not.

(c) 860, 186

860, the 0 is even. 186, the 6 is even. 863, the 3 is not even.

Answer:

Step-by-step explanation:

Surface Area of a cylinder = 2 × area of base + lateral face

First find the area of the base

Area of Base = πr² ( pi × radius squared ) ( pi = 3.14 )

AB = 3.14 × 3²

AB = 3.14 × 9

Area of Base = 28.26

Next, find the lateral face

Lateral Face = circumference of base × altitude

( circumference of base = 2πr ) ( altitude = height of the cylinder )

LF = 2 × 3.14 × 3

Lateral Face = 18.84

Last, is the Surface Area

Surface Area of a cylinder = 2 × area of base + lateral face (formula)

SA = 2 × 28.26 + 18.84 × 5

SA = 56.52 + 18.84 × 5

SA = 56.52 + 94.2

Answer:

680

Step-by-step explanation:

Jose's income in 2hours = $34

in 1 hour = 34 divide by 2 = 17

income made in 40 hours = 17 multiplied by 40 = $680

To find the unit price, divide the total price by the number of items. A unit price is a unit rate for one item.

1. 29.68 / 4 = 7.42

So $7.42 is the unit price.

2. 625 / 6 = 104 (rounded to the nearest whole number)

So Jess can type 104 words per minute.

Answer:

1. 7.24

2. 104

Step-by-step explanation:

1. divide 29.68 by 4

> 29.68÷4

> 7.24

therefore the unit price is 7.24

check: 7.24x4=29.68

2. divide 625÷6

> 625÷6

> 104.1666667

> 104.1666667 round off 104

therefore he can type 104words per minute

Answer:

[tex]x[/tex]∈{[tex]\frac{\sqrt{129} +33}{60} ,\frac{-\sqrt{129}+33 }{60} )[/tex]

Step-by-step explanation:

( There is over 25 steps) (brainly has a max amount of characters)

Step-by-step explanation:

63+36+X = 180 (interior angles of a triangle equal 180)

X = 180-99

X= 81

X+Z= 180(angles on a straight line adds up to 180)

81+y= 180

Z=180-81

Z =99

13+Z+Y=180

13+99+Y=180

Y=180-112

Y=68

Answer:

63.55

Step-by-step explanation:

1. Given that Javier's pay rate is $10.25 per hour, let's find the combined amount he earned from Monday and Tuesday by multiplying the hours worked by 10.25.

2. Now, let's add 24.6 and 38.95 to get how much he earned:

Therefore, Javier earned 63.55 dollars and cents on those two days.

Answer:

3(x+4)

Step-by-step explanation:

simple common factor problem.

Note the rule

[tex]\boxed{\sf a_n=ar^{n-1}}[/tex]

Now

[tex]\\ \tt\longmapsto a_2=3(-1/2)^{2-1}=3(-1/2)=-3/2[/tex]

[tex]\\ \tt\longmapsto a_3=3(-1/2)^{3-1}=3(-1/2)^2=-3/4[/tex]

[tex]\\ \tt\longmapsto a_4=3(-1/2)^{4-1}=3(-1/2)^3=-3/8[/tex]

[tex]\\ \tt\longmapsto a_5=3(-1/2)^{5-1}=3(-1/2)^4=-3/16[/tex]

Answer: (a.) 32x-20  4*8-4*5        (b.) 22y    11y+11y

Step-by-step explanation:

Answer:

rearrange the question

y - 5x = 8.................(1)

y - 8x = 9..................(2)

make y the subject formula in eqn. (1)

y = 8 + 5x................(3)

substitute

8 + 5x - 8x = 9

-3x = 1

x = -⅓

y = 8 + 5x

y = 8 + (-⅓)

y = 23/3