(5x2 + 13x – 4) – (1722 + 70 – 19) + (50 – 7)(3.1 + 1)
12
-
I+D

Answer:

1/9×450

=$50 per month

Step-by-step explanation:

Dwayne deposits $25 every month as we have found it out by using numerical expression formed by given statements.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Dwayne opens a savings account with $75.

He makes the same deposit every month and makes no withdrawals.

Assuming he makes $x deposit every month.

After 3 months, he has $150.

∴ 3x + 75 = 150.

3x = 75.

x = 25.

So, he makes a deposit of $25 every month.

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Answer:

Step-by-step explanation:

You know the lengths of two sides and the angle between them, so use the Law of Cosines to find the third side.

x^2 = 10.5^2+ 5.4^2 -2(10.5)(5.4)cos20°

x ≈ 5.73 units

Answer:

[tex] \underline{ \boxed{x = 5.7}}[/tex]

Step-by-step explanation:

[tex]its \: simple \: and \: easy \ \: : \: if \: you \: apply \: the \: cosine \: rule \to \\ {x}^{2} = {(10.5)}^{2} + {(5.4)}^{2} - 2(10.5)(5.4) \cos(20) \\ {x}^{2} =( 110.25 +29.16 ) - (113.4)( \cos(20)) \\ {x}^{2} = 139.41 - 106.5611432 \\ {x}^{2} = 32.8488568 \\ x = \sqrt{32.8488568} \\ x = 5.7313922218 \\ \boxed{x = 5.7}[/tex]

Answer:

Step-by-step explanation:

1) Make it so that it's easy to solve

3 = -y +2x

18 = y + x (the y cancels out)

21 = 3x (divide both sides by 3 to isolate x)

x = 7 (then you can plug in x and then solve for y)

2) Again, make the problem easy to read  

12 = -x + y

27 = 4x + 2y (get rid of either x or y. I am going to get rid of x by multiplying the top equation by four)

48 = -4x + 4y

27 = 4x + 2y  (x is canceled out)

75 = 6y (divide both sides by 6 to isolate y)

12.5 = y (then plug in y to find x)

3) 15 = (7 + p) + p -----------------> p represents pants and (7 + p represents shirts because she bought 7 plus pants of shirts)

15 = 7 + 2p

8 = 2p (isolate p by dividing by 2)

p = 4

- Elaine bought 4 pants and 11 shirts.

In the comments, let me know if you need a further explanation.

Answer:

x=10

Step-by-step explanation:

5x-4=46

+4. +4

5x=50

x=10

Answer:

x = 10

Step-by-step explanation:

5x = 46 + 4 = 50

x = 50 / 5 = 10

x = 10

hope u find this helpful :)

Answer:

4 driveaways

Step-by-step explanation:

90 - 30 = 60

60 ÷ 15 = 4

Answer:

B

Step-by-step explanation:

First, find the slope by using change in y divided by change in x.

Change in y = 5 - 2 = 3

Change in x = 2 - 1 = 1

This means that the slope is 3/1 = 3.

Then, you put it in the point-slope form so:

(y - 2) = 3(x - 1)

14/16, or 3.5/4! There are quite a few.

Answer:

12/15

Step-by-step explanation:

The fraction of 4/5 using fifteenths is 10/9.

The fractional bar is a horizontal bar that divides the numerator and denominator of every fraction into these two halves.

Given:

4/5 using fifteenths

We have to convert the denominator in 15.

So, multiplying the fraction by 3/3

Then, 4/5 x 3/3 = 12 / 15

Hence, the fraction of 4/5 using fifteenths is 10/9.

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answer is .7 .81 l think

Answer:

-3/5= -0.6

-2/3= -0.666 (repeating)

-1/2= -0.5

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

If 9 cups of water is for 6 of lemon juice, and it will stay on this continuous path then 2x9= 18 cups of water for 2x6 lemon juice which makes it 12.

Answer:

Answer:

in the two triangles WXZ and XYZ we have:

●YXZ=XZY(given)(THESE ARE ANGLES)

●WZX=ZXY(given)(THESE ARE ANGLES)

●(XZ) common side

so the 2 triangles are congruent by ASA(ANGLE SIDE ANGLE).

Step-by-step explanation:

hope this helped and there is another way by proving the quadrilateral a parallelogram but it's longer and harder tell me if u want me to explain it to you

Answer: if you are on khan academy, which you are, here’s the real answer.

Step-by-step explanation:

Answer:

30.89cm³

Step-by-step explanation:

Given that:

Side length, s of square = 12cm

Area of square = s² = 12² = 144cm²

Since the circle touches the edge of tbe square, then the diameter of the circle = side length of square = 12 cm

Area of a circle = πr²

Radius, r = diameter / 2 = 12/2 = 6cm

A = 3.142 * 6^2

A = 3.142 * 36

A = 113.112 cm²

Area of shaded portion = area of square - area of circle

= 144cm² - 113.112cm³

= 30.89cm³

Answer:

C

Step-by-step explanation:

1116 / 36 = 31

hope this helps

Answer:

C ,1,116/36 = c (1,116 divided by 36 equals c)

Step-by-step explanation:

Hope this helps!

Answer:

x<4

Step-by-step explanation:

Let's solve your inequality step-by-step.

2x+1<9

Step 1: Subtract 1 from both sides.

2x+1−1<9−1

2x<8

Step 2: Divide both sides by 2.

2x

2

<

8

2

x<4

Hopefully that helped

Answer:

x<4, (-infinite, 4)

Step-by-step explanation:

2x+1<9

2x<9-1

2x<8

(2x<8) / 2

x<4

Answer:

Step-by-step explanation:

Answer:

Hope this help

Step-by-step explanation:

The correct options are (1) and (3)

The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).

Given that, a right triangle Δ DEF,

We know that the sine of an angle is the trigonometric ratio of the opposite side to the hypotenuse of a right triangle containing that angle.

Therefore, If D is the reference angle then, sinD = 8/√185

and B is the reference angle then, sinB = 11/√185

Hence, The correct options are (1) and (3)

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Answer:

She reads 6.8 pages per minute.

Step-by-step explanation:

170 divided by 25 = 6.8

Answer: See explanation

Step-by-step explanation:

I think your question should be a rectangle and not a triangle. A triangle has 3 sides and not 2 sides. In order to solve the question, I'm assuming that you wanted to write rectangle.

Note that the perimeter of a rectangle:.= 2(length + breadth)

Let the width be x

Since the length is 1 1/8 cm longer than the width, therefore, the length is 1 1/8 + x.

Therefore, perimeter = 2(1 1/8 + x + x) = 13 1/4

2(1 1/8 + 2x) = 13 1/4

2 2/8 + 4x = 13 1/4

2 1/4 + 4x = 13 1/4

4x = 13 1/4 - 2 1/4

4x = 11

x = 11/4

x = 2 3/4

Therefore, the width is 2 3/4cm

Length = 2 3/4 + 1 1/8

= 2 6/8 + 1 1/8

= 3 7/8cm

Answer:

22x + 33y + 11z

Step-by-step explanation:

11(2x + 3y + z)

11 * 2x + 11 * 3y + 11 * z = 22x + 33y + 11z

Answer:

a = 31.7

c = 39.1

Step-by-step explanation:

tan54 = a / 23

a = 23 * tg54

a = 31.7

sin54 = 31.7 / c

c = 31.7 / sin54

c = 39.1

:)

Answer:

3789/21

=180.4...............

Answer:

5.25

Step-by-step explanation:

Convert the fraction into a whole number with a decimal then multiply it by the cost per pound

Ur welcome :]

Answer:

Those answers are correct that are shown and that are shown in blue

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

14+10=24-14=10

Answer: 10

Step-by-step explanation: 14 + 10 = 24 + (-14) = 10

Answer:

I can’t see the picture well please make it more detailed

Step-by-step explanation:

Answer: Its A

explanation:

Im good at math

Can i have brainliest please?

Answer:

sin60° = [tex]\frac{\sqrt{3} }{2}[/tex]

Step-by-step explanation:

sin60° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex]