9 1/4 −(2 1/4 + 3/7 a)

Answer:

The mistake was made in the second step when going from 3x - 2(3x-4) = 13 to 3x - 6x - 8 = 13.

The mistake was in the multiplication of -2(3x-4). The error is that the negative sign was not distributed to both the 3x and the -4.

-2 times 3x is -6x  and  -2 times -4 is positive 8

Step-by-step explanation:

y = 3x - 4

3x - 2y = 13

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

3x - 2(3x - 4) = 13

3x - 6x + 8 = 13

-3x + 8 = 13

-3x = 5

x = -5/3

y = 3(-5/3) - 4

y = -5 - 4

y = -9

Solution: x = -5/3 and y = -9

Answer:

$52.50

Step-by-step explanation:

Multiply $50 by 0.03 to find the tax = 1.5

Multiply $50 by 0.02 to find tip = 1

add $50 to 1.5 and 1 to get $52.50

Answer:

Step-by-step explanation:

Answer:

If you are asking the shape it's rectangle if you are asking 5x5 = 25 1x1 = 1

Answer:

Second Option

Step-by-step explanation:

The ratio of a 30-60-90 triangle is

a: a times root of 3: 2a.

Since the side opposite of 60 degree angle

[tex] \frac{3 \sqrt{3} }{2} [/tex]

The smallest angle is divided that of root 3.

[tex] \frac{3 \sqrt{3} }{2} \times \frac{1}{ \sqrt{3} } = \frac{3}{2} [/tex]

That side is b. Side A is twice of Side B. Which is

3.

Answer:

I do believe the answer is the second one

Answer:

option C is correct answer.

hope this helps you !

Answer:

B. because 3/2 is equal to 1.5 or 1 and a half and because of the negative on -2/3 it is a downward facing slope that has the ratio of down 2 over 3 for the slope.

Step-by-step explanation:

The compound inequality that Contessa is solving is |8 - 3q| ≤ 7

An inequality is an expression that shows the non equal comparison between two or more numbers and variables.

Given the inequality:

-7 ≤ 8 - 3q ≤ 7

8 - 3q ≤ 7 and; 8 - 3q ≥ -7

8 - 3q ≤ 7 and; -(8 - 3q) ≤ 7

|8 - 3q| ≤ 7

The compound inequality that Contessa is solving is |8 - 3q| ≤ 7

Find out more on inequality at: https://brainly.com/question/24372553

Answer

IT's C

Step-by-step explanation:

Hey there!

13 + 18 - (4 * 6)
= 31 - 4 * 6

= 31 - 24

= 7

Thus, the answer MIGHT be: 7

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

Step-by-step explanation:

Parallel, if you think about it infinitely, the lines will go on forever, they will never touch each other, if so that means its parallel

Answer:

false

Step-by-step explanation:

to get the area of a rectangle u need to multiple length and width.

Answer:

false

Step-by-step explanation:

the given expression describes the perimeter.

the area is

length × width (or breadth or depth or whatever word applies best for the second dimension in a certain scenario)

Answer:

D. 45 unit

Step-by-step explanation:

parallelogram:

the area of the parallelogram is 45 units(D.)

Answer:

part A:60

Step-by-step explanation:

25% of 20 is 5 now we know 40% of 60 which is 24 add 5+24=29 .hope this is helpful

Answer:

  4) a > b·sin(A) -- triangle exists

  5) a > b·sin(A) -- triangle exists

Step-by-step explanation:

The triangle will exist when the missing angle value can be computed using the Law of Sines. That tells you ...

  sin(B)/b = sin(A)/a

  sin(B) = b·sin(A)/a

In order for the triangle to exist, we must have ...

  1 ≥ sin(B)

  1 ≥ b·sin(A)/a

  a ≥ b·sin(A) . . . . . . . always true if a > b

__

  a ? b·sin(A)

  17 > 13·sin(63°) . . . . true (no calculator needed) triangle exists

__

  a ? b·sin(A)

  24 > 7·sin(120°) . . . . true (no calculator needed) triangle exists

_____

Additional comment

In general if b > a and the triangle exists, there will be two possible triangles with the given dimensions.

The only rational numbers that will give a right angle for B are ...

  a=1, b=2, A=30° . . . . . and any multiples of these side lengths

Answer:

The triangle is obtuse if one angle is between 90º and 180º.

More : Acute < 90º, right = 90º, reflex > 180º (straight 180º, full rotation 360º)

The expression 400(1.12)^y is an exponential function

The true statement is that the growth rate of the fish in the lake is 12%

The expression is given as:

400(1.12)^y

The above expression is an exponential growth function,

Where:

Next, we calculate the growth rate (r) as follows:

r = 1.12 - 1

r = 0,12

Express as percentage

r = 12%

Hence, the true statement is that the growth rate of the fish in the lake is 12%

Read more about exponential functions at:

https://brainly.com/question/11464095

answer:

74

Step-by-step explanation:

The sample size for the given confidence interval is 96.

A range of estimates for an unknown parameter is called a confidence interval (CI). A confidence level calculates a confidence interval; The most common confidence level is 95 percent. The confidence level is the percentage of corresponding CIs that contains the actual value of the parameter over time.

Given confidence of margin is at 95%

E = 0.1 = margin of error

95% confidence interval of Z = 1.96

sample size = n, which is given by

n = (Z/E)²(p)(1 - p)

n = (1.96/0.1)²(0.5)(0.5)

n = 96.04 = 96 approx

Hence, the sample size is 96.

Learn more about confidence intervals;

https://brainly.com/question/29680703

#SPJ2

Answer:

3x + 4y

Step-by-step explanation:

You need to explain more. If you are asking for an equation, x represents the cost of each notebook and y represents the cost of each pack of markers. Also, you did not mention how much each pack of of marker costed, so I used y to substitute that amount. If you do know how much a pack of markers costs, multiply that number by 4 and your new equation will be 3x + (whatever the product is).

[tex] \frac{1}{4}[/tex] is the answer.

(I have included the answer as picture.)

[tex]\rm{Have \: a \: great \: day! \: :)}[/tex]

Answer:

Formula for area of triangle:

A = bh x 1/2

1) height is 8, and base is 8, so:

8(8) x 1/2 = 32 yd

2) height is 5, base is 6, so:

6(5) x 1/2 = 15 ft

3) height is 8, base is 10, so:
10(8) x 1/2 = 40 in

Answer:

80m^3

Step-by-step explanation:

Here,
For the base of pyramid which is a rectangle,
length(a) = 8m
breadth(c) = 5m
For the pyramid,
actual height (h) = 6m
Now,
The formula for the Volume of a rectangular based pyramid is,
1/3 * Area of base rectangle * height
= 1/3 * (a*c) * 6 [ Because area of rectangle is product of its two sides, length and breadth]
= 2 * 8 * 5
80m^3

Answer:

50

Step-by-step explanation:

400x2.5

Answer:

6 Emails

Step-by-step explanation:

If you take 15% of 40, or 0.15*40, you will get 6

So if she must respond to 15 percent of the total emails, you can use this equation to figure out how many emails she must respond to.

The volume of the cylinder from the rectangle is the size of the cylinder

The rectangle that generates the cylinder of the largest volume is 3 inches by 6 inches

Let the dimension of the rectangle be x and y.

So, the perimeter (P) is:

[tex]P = 2 * (x + y)[/tex]

The perimeter is given as 18.

So, we have:

[tex]2 * (x + y) = 18[/tex]

Divide both sides by 2

[tex]x + y = 9[/tex]

Make y the subject

[tex]y = 9 - x[/tex]

The volume of a cylinder is:

[tex]V = \pi r^2h[/tex]

So, we have:

[tex]V = \pi x^2(9 -x)[/tex]

Expand

[tex]V = \pi(9x^2 -x^3)[/tex]

Differentiate

[tex]V' = \pi(18x -3x^2)[/tex]

Set to 0

[tex]\pi(18x -3x^2) = 0[/tex]

Divide both sides by [tex]\pi[/tex]

[tex]18x -3x^2 = 0[/tex]

Divide both sides by 3x

[tex]6 -x = 0[/tex]

Make x the subject

[tex]x = 6[/tex]

Recall that:

[tex]y = 9 - x[/tex]

So, we have:

[tex]y = 9 - 6[/tex]

[tex]y = 3[/tex]

Hence, the rectangle that generates the cylinder of the largest volume is 3 inches by 6 inches

Read more about volumes at:

https://brainly.com/question/10171109

Answer:

$50400

Step-by-step explanation:

2/5 of 240000 is 96000.

So the remaining money is 240,000-96000, which is 144000.

If 13/20 is used in the first ten days, that leaves 7/20 to be used in the next 10 days.

7/20 of 144000 is 50400.

There's the answer!

Applying the tangent ratio, the horizontal distance, rounded to the nearest tenth, is: 1,508.8 ft.

Tangent ratio, TOA, is expressed as, tan ∅ = opposite/adjacent.

The situation has been sketched in the diagram atatched below, where:

Apply the tangent ratio:

tan 5 = 132/BC

BC = 132/tan 5

BC = 1,508.8 ft.

Therefore, applying the tangent ratio, the horizontal distance, rounded to the nearest tenth, is: 1,508.8 ft.

Learn more about the tangent ratio on:

https://brainly.com/question/14169279