Anybody know!!!! SOS

9514 1404 393

Answer:

  43.76

Step-by-step explanation:

Add up the terms:

  4×10 +3×1 +7×1/10 +6×1/100

  = 40 +3 +0.7 +0.06

  = 43.76

_____

If you're in a part of the world where "standard form" and "scientific notation" are the same thing, then this would be ...

  4.376×10¹

Answer:

The answer is 50.

Step-by-step explanation:

Use MDAS

Multiplication, Division, Addition and Subtraction

2 + 6 * 8 =

Multiply first then add

2 + 6*8 = ?

= 2 + 48

= 50

Answer and explanation:

a) To find the average speed of Miss Lim for the whole journey, we need to use the formula:

Average speed = Total distance ÷ Total time

Let's first calculate the total distance traveled by both Miss Wan and Miss Lim. We know that Miss Wan drove at an average speed of 60 km/h and reached Orchard Road 30 minutes later. So, the total distance traveled by her would be:

Distance = Speed × Time

Distance = 60 km/h × (30/60) h

Distance = 30 km

Now, we also know that Miss Lim was still 5 km away from Orchard Road when Miss Wan reached there. Therefore, the total distance traveled by both of them would be:

Total distance = Distance covered by Miss Wan + Distance left for Miss Lim

Total distance = 30 km + 5 km

Total distance = 35 km

Next, let's calculate the total time taken by both of them. We know that Miss Wan took 30 minutes less than Miss Lim to reach Orchard Road. So, if we assume that Miss Lim took t hours to reach Orchard Road, then Miss Wan took (t - 0.5) hours. Therefore, the total time taken by both of them would be:

Total time = Time taken by Miss Wan + Time taken by Miss Lim

Total time = (t - 0.5) h + t h

Total time = 2t - 0.5 h

Now, we can use the formula to find the average speed of Miss Lim:

Average speed = Total distance ÷ Total time

Average speed = 35 km ÷ (2t - 0.5) h

Therefore, the average speed of Miss Lim for the whole journey is 35/(2t-0.5) km/h.

b) To find out what time Miss Lim would reach Orchard Road, we can use the formula:

Time taken = Distance ÷ Speed

We know that Miss Lim was 5 km away from Orchard Road when Miss Wan reached there. Therefore, the distance left for Miss Lim to cover would be:

Distance = 5 km

We also know that Miss Lim's average speed for the whole journey is 35/(2t-0.5) km/h. Therefore, the time taken by her to cover the remaining distance of 5 km would be:

Time taken = Distance ÷ Speed

Time taken = 5 km ÷ 35/(2t-0.5) km/h

Time taken = (2t - 0.5) ÷ 7 h

Now, we need to add this time to the time when Miss Wan reached Orchard Road, which was 30 minutes past 2.50 p.m. So, the time when Miss Lim would reach Orchard Road would be:

Time = Time when Miss Wan reached Orchard Road + Time taken by Miss Lim

Time = 2.50 p.m. + 30 min + (2t - 0.5) ÷ 7 h

Simplifying this equation, we get:

Time = (14t + 11) ÷ 14 p.m.

Therefore, Miss Lim would reach Orchard Road at (14t + 11) ÷ 14 p.m.

Answer:

  a) 50 km/h

  b) 3:26 p.m.

Step-by-step explanation:

You want to know Miss Lim's average speed and arrival time at Orchard Road if Miss Wan gets there in 30 minutes at 60 km/h, starting at 2:50 pm.

The distance Miss Wan traveled is ...

  distance = speed × time

  distance = (60 km/h) × (1/2 h) = 30 km

In the same 30 minutes that Miss Wan traveled 30 km, Miss Lim traveled 5 km less, so 30 -5 = 25 km. Miss Lim's speed was ...

  speed = distance/time

  speed = (25 km)/(1/2 h) = 50 km/h

Assuming Miss Lim maintained that speed for the remaining 5 km, her average speed for the journey was 50 km/h.

Miss Lim's travel time is ...

  time = distance/speed

  time = (30 km)/(50 km/h) = 3/5 h = 36 min

The clock time 36 minutes after 2:50 pm is 3:26 pm.

Miss Lim reached Orchard Road at 3:26 p.m..

Answer:

8 and 5

Step-by-step explanation:

Answer:

8 and 5

Step-by-step explanation:

The measure of each exterior angles of rectangle is 90°

From the question, we have the following parameters that can be used in our computation:

A rectangle

A rectangle is a polygon with 4 sides

So, the measure of the exterior angle can be calculated using the formula for the exterior angles in a polygon

The exterior angles in a polygon are found by using:

Exterior of a rectangle in a polygon =  360°/Number of sides of the polygon

In this case,

The number of sides of the rectangle = 4

So, we have

Exterior of a rectangle =  360°/4

Evaluate

Exterior of a rectangle =  90°

Hence, the value of the measure of each exterior angles of rectangle is 90°

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Complete question

Find the measure of each exterior angles of rectangle?

Step by step​

Answer:

A:

Answer:65Step-by-step explanation:C^2= A^2 + B^2C^2 = (60)^2 + (25)^2 C^2 = 4225Take the square root of CC = 65

The investigators should conclude (C) There is insufficient evidence that the vitamin improves the health of adults because, at the 0.05 significance level, one could easily get statistically significant results in 2 out of 85 tests just due to chance variability.

In statistical hypothesis testing, a significance level of 0.05 indicates that there is a 5% chance of obtaining a statistically significant result due to chance variability if the null hypothesis is true.

In this study, the investigators performed 85 separate tests, increasing the chance of obtaining at least one false positive result due to chance variability.

This is known as the multiple comparisons problems, and to control for this issue, the investigators should have used a correction for multiple comparisons, such as the Bonferroni correction, which would have adjusted the significance level to 0.05/85 = 0.0006.

Therefore, finding two statistically significant results out of 85 tests does not provide sufficient evidence to conclude that vitamin improves the health of adults. Further studies with larger sample sizes, corrected for multiple comparisons, and controlling for confounders, are needed to draw a valid conclusion.

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Answer:

-9 + 2y^2 + 7y

Step-by-step explanation:

- 6 - 2y^2 - 3 + 3y - 2y^2 + 4y + 6y^2

just combine
-9 + 2y^2 + 7y

The value of x that makes the line containing (1,2) and (5,3) perpendicular to the line containing (x,4) and (3,0) is x = 2.

To determine the value of x such that the line containing (1,2) and (5,3) is perpendicular to the line containing (x,4) and (3,0), we need to find the slope of both lines and apply the concept of perpendicular lines.

The slope of a line can be found using the formula:

slope = (change in y) / (change in x)

For the line containing (1,2) and (5,3), the slope is:

slope1 = (3 - 2) / (5 - 1) = 1 / 4

To find the slope of the line containing (x,4) and (3,0), we use the same formula:

slope2 = (0 - 4) / (3 - x) = -4 / (3 - x)

Perpendicular lines have slopes that are negative reciprocals of each other. In other words, if the slope of one line is m, then the slope of a line perpendicular to it is -1/m.

So, we can set up the equation:

-1 / (1/4) = -4 / (3 - x)

Simplifying this equation:

-4 = -4 / (3 - x)

To remove the fraction, we can multiply both sides by (3 - x):

-4(3 - x) = -4

Expanding and simplifying:

-12 + 4x = -4

Adding 12 to both sides:

4x = 8

Dividing both sides by 4:

x = 2

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Answer:

\(x = - 4\)

Step-by-step explanation:

\(4x - 2 = - 3 \times 2 + 3x\)

Calculate the product:

\(4x - 2 = - 6 + 3x\)

Rearrange the terms:

\(4x - 3x = - 6 + 2\)

Combine like terms:

\(x = - 6 + 2\)

Calculate:

\(x = - 4\)

Answer:
x = 1/2
Step-by-step explanation:
Combine exponents
4x-x-2=-3^2+3xx
4x-x-2=-3x^2+3x^2
Combine like terms
4x-2=-3x^2+3x^2
4x-2=0
Add 2 to both sides
4x-2=0
4x-2+2=0+2
Simplify:
Add the numbers
4x-2+2=0+2
4x=0+2
Add the numbers again
4x=0+2
4x=2
Divide both sides by the same factor
4x=2
4x/4 = 2/4
Simplify:
Cancel terms that are in both the numerator and denominator
4x/4 = 2/4
X= 2/4
Divid the numbers
X= 2/4
X= 1/2
Solution/ Answer
x= 1/2

Hope this helps

Answer:

he needs $279

Step-by-step explanation:

715-436= 279

Answer:

g(x)=x-2/x^2-9

If there is more than one value, separate them with commas.

Step-by-step explanation:

Answer:

i got a whole lotta math questiosn to ask, answer them for me I give u bigger points

Step-by-step explanation: please n thanks man

Answer:

Can you please answer my question?

Step-by-step explanation:

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Step-by-step explanation:

The answer for x in the solution is -5

By ASA congruency triangle KBH is congruent to triangle NWH.

Given that, KBWN is a parallelogram with diagonals KW and BN intersecting at point H.

From the given figure,

Consider ΔKBH and ΔNWH,

∠KHB=∠NHW (Vertically opposite angles)

∠HKB=∠HWN (Interior alternate angles parallelogram)

KH=HW (Diagonals bisect each other)

By ASA congruency ΔKBH ≅ ΔNWH

Therefore, by ASA congruency triangle KBH is congruent to triangle NWH.

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Step-by-step explanation:

7 x7+3-2(-7) (618)

=7 x7+3-2(-4326)

=-4341

To find the number of dimes and quarters, you have 17 dimes and 34 quarters in your pocket , when there are 51 coins in your pocket.

To solve this problem, we can set up a system of equations using the given information. Let's use "d" to represent the number of dimes and "q" to represent the number of quarters.

We know that there are 51 coins in total, so we can write the equation: d + q = 51.

We also know that the total value of the coins is $10.20, which can be expressed as 10d + 25q (since dimes are worth 10 cents and quarters are worth 25 cents). So our second equation is: 10d + 25q = 1020.

To solve this system of equations, we can use substitution or elimination. Let's use substitution:

Rearrange the first equation to solve for d: d = 51 - q.

Substitute this expression for d in the second equation: 10(51 - q) + 25q = 1020.

Simplify and solve for q: 510 - 10q + 25q = 1020.

Combine like terms: 15q = 510.

Divide both sides by 15: q = 34.

Now substitute this value back into the first equation to solve for d: d + 34 = 51.

Subtract 34 from both sides: d = 17.

Therefore, you have 17 dimes and 34 quarters.

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The value of the a  in the mixed form is \(-1 \frac{5}{43}\).

What is the equivalent expression?

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

To solve for a, we can begin by isolating the variable on one side of the equation.

First, we can subtract 3 from both sides to get:

-7/12 - 3 = 4/a

Next, we can simplify the left side by finding a common denominator of 12:

-7/12 - 3 * 12/12 = 4/a

-7/12 - 36/12 = 4/a

-43/12 = 4/a

To solve for a, we can multiply both sides by a/4:

(-43/12) * (a/4) = 1

Multiplying the left side gives:

-43a/48 = 1

Dividing both sides by -43/48 gives:

a = -48/43

To express this as a mixed number, we can divide the numerator by the denominator:

-48 ÷ 43 = -1 with a remainder of 5

Therefore, the value of the a  in the mixed form is \(-1 \frac{5}{43}\).

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Complete question:

Challenge) Solve for a. Answer as a mixed number. A=?

-7/12 = 4/a+3.

Answer: 8x-16

Step-by-step explanation:

Answer:   8x-16

Step-by-step explanation:

The correct statements are:

When a point is reflected across the x-axis, the x-coordinate remains the same, but the y-coordinate changes sign. Therefore, statement A) is true.

When a point is reflected across the y-axis, the y-coordinate remains the same, but the x-coordinate changes sign. Therefore, statement C) is true.

It should be noted that to represent the reflection of point A (1,-2) across the y-axis, we flip the sign of the x-coordinate to obtain the image point A' (-1,-2). Therefore, statement D) is true.

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The given box plot represented by the data sets in option A and B.

From the given box plot, we have

Minimum value = 3

Maximum value = 18

First quartile (Q1) = 7

Third quartile (Q3) = 13

Median = 10

Option A:

3, 4, 8, 9, 9, 12, 12, 13, 13, 16, 18

Median = 12

First quartile (Q1) = 8

Third quartile (Q3) = 13

Option B:

3, 4, 7, 9, 9, 10, 12, 13, 13, 16, 18

Median = 10

First quartile (Q1) = 7

Third quartile (Q3) = 13

Option C:

3, 4, 8, 9, 9, 10, 12, 13, 13, 16, 18

Median = 10

First quartile (Q1) = 8

Third quartile (Q3) = 13

Option D:

2, 4, 7, 9, 9, 10, 12, 13, 13, 16, 18

Median = 10

First quartile (Q1) = 7

Third quartile (Q3) = 13

Therefore, the correct options are B and D.

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The solution for the given expression is  7 + 5/12

First we need to write the expression, using fractions, we will get:

(5 + 6/8) + (4 + 4/15) - (2 + 6/10)

We can group like terms, and we will get:

(5 + 6/8) + (4 + 4/15) - (2 + 6/10) = (5 + 4 -2) + (6/8 + 4/15 - 6/10)

Now just simplify that to get.

(5 + 4 -2) + (6/8 + 4/15 - 6/10) =  7 + 3/4 + 4/15 - 3/5

                                                =  7 + 3/4 + 4/15 - 9/15

                                                = 7 + 3/4 - 5/15

                                                = 7 + 9/12 - 4/12

                                                 = 7 + 5/12

That is the answer.

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Answer:

False

Step-by-step explanation:

Answer:

First account: $6380.

Second account: $4251.

Step-by-step explanation:

let the first account have $x at the start of the first year

So at the end of 1 year it had x + 0.1x = $1.1x

In the same we we calculate the amount in the second account

= $1.09(9700 - x)

So we have the following equation

1.1x + 1.09(9700 - x) = 9700 + 931

1.1x + 10573 - 1.09x = 10631

0.01x = 10631 - 10573 = 58

x = 58/0.01

   =$5800

So at the end of the year there was

5800 * 1.1 = $6380 in first account

and

the second account had

1.09 (9700 - 5800) = $4251.

The quotient is found to be 4/5. The correct option is (B).

A fraction is a number written in the form a / b, where a and b are integers and b ≠ 0. The number a is called as the numerator and b is the denominator. In order to divide two fractions take the reciprocal of the other fraction and change the sign as multiplication. It can be shown as a/b ÷ c/d = a/b × d/c.

The given expression is -3/5 ÷ (-3/4).

It can be simplified as follows,

Take the reciprocal of the fraction (-3/4) as -4/3.

And, change the sign of division to multiplication to obtain,

-3/5 ÷ (-3/4)

⇒ -3/5 × -4/3 = 4/5

Which the value of the quotient.

Hence, the quotient for the given arithmetic operation is 4/5.

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Answer:

5

Step-by-step explanation:

2 + 4 +3 - 6 +2

5

plz mark me brainliest

Answer:

2.5 inches

Step-by-step explanation:

Given

Shelf Width = 3ft 9in

Copies = 18

Required

Determine the width of each book

This is calculated by dividing the shelf width by the number of copies.

Width = Shelf Width ÷ Copies

Width = (3 ft 9in) ÷ (18)

[Convert with to inches]

Width = (3 * 12 + 9) ÷ (18)

Width = (36 + 9) ÷ (18)

Width = 45 ÷ 18

Width = 2.5 inches

Hence, the width of each book is 2.5inches

a-1. The profitability index for Project I is 1.180, and for Project II it is 1.414.

a-2. Based on the profitability index decision rule, the firm should accept Project II.

b-1. The NPV for Project I is $9,699.57, and for Project II it is $7,872.48.

b-2. According to the NPV decision rule, the firm should take Project I since it has a higher NPV.

a-1. To calculate the profitability index for both projects, we divide the present value of cash inflows by the initial investment (cash outflow).

For Project I:

PV of cash inflows = $25,000 / (1 + 0.11)^1 + $25,000 / (1 + 0.11)^2 + $25,000 / (1 + 0.11)^3 = $63,699.57

Profitability Index (Project I) = PV of cash inflows / Initial investment = $63,699.57 / $54,000 = 1.180

For Project II:

PV of cash inflows = $10,200 / (1 + 0.11)^1 + $10,200 / (1 + 0.11)^2 + $10,200 / (1 + 0.11)^3 = $26,872.48

Profitability Index (Project II) = PV of cash inflows / Initial investment = $26,872.48 / $19,000 = 1.414

a-2. According to the profitability index decision rule, a project with a profitability index greater than 1 is considered acceptable. Therefore, based on the profitability indexes calculated:

Project I has a profitability index of 1.180

Project II has a profitability index of 1.414

Since Project II has a higher profitability index, the firm should accept Project II.

b-1. To calculate the net present value (NPV) for both projects, we find the present value of cash inflows and deduct the initial investment (cash outflow).

For Project I:

NPV (Project I) = PV of cash inflows - Initial investment = $63,699.57 - $54,000 = $9,699.57

For Project II:

NPV (Project II) = PV of cash inflows - Initial investment = $26,872.48 - $19,000 = $7,872.48

b-2. According to the NPV decision rule, a project with a positive NPV is considered acceptable. Comparing the NPVs calculated:

Project I has an NPV of $9,699.57 (positive)

Project II has an NPV of $7,872.48 (positive)

Based on the NPV decision rule, the firm should take Project I since it has a higher NPV.

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