I think of a number, double it and the result is 15​

Answers

Answer 1

The number in question is 7.5

Step-by-step explanation:

15 ÷ 2 = 7.5

Why divide by 2? Because dividing by 2 is the inverse of multiplying by 2. To double-check our solution, just multiply 7.5 by 2... and 15!!


Related Questions

Rosa has a picture frame that measures 12 inches by 18 inches. Which measurement is closest to the diagonal distance across the frame?
A. 6 inches
B. 21.6 inches
C. 30 inches
D. 36 inches

Answers

Answer:

B:21.6

Step-by-step explanation:

12²+18²=C

144+324=468

V468=21.6

Answer:

B 21.6

Step-by-step explanation:

You can solve this using the Pythagorean theorem:

h² = l² + w²

h² = 18² + 12²

h² = 324 + 144

h² = 468

h = √468

h ≈ 21.6

368.54 = ( _ x 100) + ( _ x 10) + ( _ x 1/10) + ( _ x 1/100)

Answers

Answer:

[tex]368.54 = 3*100 + 6.8*10 +5*1/10 + 4*100[/tex]

Step-by-step explanation:

Given

[tex]368.54 = ( [\ ] * 100) + ( [\ ] * 10) + ( [\ ] * 1/10) + ( [\ ] * 1/100)[/tex]

Required

Fill in the gap

The number can be expressed as:

[tex]368.54 = 300 + 60 + 8 +0.5 + 0.04[/tex]

Factorize:

[tex]368.54 = 3*100 + 6*10 + 0.8*10 +5*1/10 + 4*100[/tex]

Factor out 10 in 6 * 10 + 0.8 * 10

[tex]368.54 = 3*100 + [6 + 0.8]*10 +5*1/10 + 4*100[/tex]

[tex]368.54 = 3*100 + 6.8*10 +5*1/10 + 4*100[/tex]

Solved

cindy added 7/8 cup of water to 1/4 cup of juice concentrate.how much juice did cindy make?​

Answers

Answer:

1 1/8

Step-by-step explanation:

7
8
+
1
4
=
7
8
+
1 × 2
4 × 2
=
7
8
+
2
8
=
7 + 2
8
=
9
8
=
1 1
8

Solve the following system by elimination:
4x+3y=2
5x + 4y = 3

Answers

Answer:

5x+4y=3

- 4x+3y=2

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

x+y=1

mark the correct factorization for each of the linear expressions​

Answers

Answer:

TALA RHYTHMIC PATTERNS

ACTIVITY 2: LET'S DO TALA

kind of membranophones/percussion instruments found at home for tapping. Record your

Directions: Perform the following tala rhythmic patterns using the given legend. Use any

performance using any recorder and send it to your

INSTRUMENTS AT HOME

MANJIRA

TIN CANS

1 2 3 4 5 6

х

1 2 3 4 5 6 7 8 9 10 11 12

GHATAM

PAL

X

х

0 X

TABLA

1 2 3 4 5 6 7 8 9 10

BOX

x xox

Two apples and six plums provide 300 calories. Three apples and five plums provide
350 calories. How many calories are provided by five apples and eight plum?

Answers

Answer:

4,596

Step-by-step explanation:

what is 15x÷8 when x=6

Answers

Answer:

45/4

Step-by-step explanation:

15x/8

15(6)/8

90/8

simplify

45/4

whats the answer a b c and d?

Answers

Answer:

VC & WC

Step-by-step explanation:

It's going to be the sides opposite the equal angles.

It's not 3 so what's the volume?​

Answers

The answer is 27. Volume of the cube
I believe is is 729 b/c you have 6 sides to you times three 6 times

8. What fraction is located halfway
between 0 and
2
4

Answers

1/4 or 1/2 I’m not sure though

Ray had 5 yards of ribbon. He used 2/3 of it. How many yards of ribbon
did he use?

Answers

I think it would be 3.333

5. A trapezoid has a base of 20 inches and 30 Inches. The height of the trapezoid is 15
inches. What is the area of the Trapezoid in square inches?

Answers

Add the top and bottom together, divide by 2 then multiply by the height.

20 + 30 = 50

50/2 = 25

25 x 15 = 375

The area is 375 square inches.

Write two expressions that are equivalent to the expression below. (9 - c) + (9 - c) + (9 - c) + (9 - c)

Answers

Answer:

4(9 – c)

36 – 4c

Step-by-step explanation:

An example of two equivalent expressions includes the general expression and then the one that is factored.

25 is 32% of what number

Answers

Answer:

78.125

Step-by-step explanation:

0.32*x = 25

x = 25/0.32 = 78.125

Answer:

78.125

Step-by-step explanation:

Let the number be Y

32% of Y = 25

32/100 x Y = 25

32Y = 25x100

32Y = 2500

divide both sides by 32

Y = 2500/32

Y = 78.125

Thomas lives more than 0.55 km and less than 0.75 km from his school.
Thomas lives from his school?
A. 0.06 km
B 0.50 km
c. 0.60 km
D. 1.30 km

Answers

0.60 km which I got from https://quizizz.com

The asking price for homes on the real estate market in Baltimore has a mean value of $286,455 and a standard deviation of $11,200. The mean and standard deviation in asking price for homes in Denver are $188,468 and $8,230, respectively. Recently, one home sold in each city where the asking price for each home was $193,000. Assuming that both distributions are bell-shaped, which of the following statements is true?
A) The Deriver home has a higher standard z-value.
B) The Baltimore home has the higher standard z-value.
C) Both cities have the same coefficient of variation
D) By The coefficient of variation for Denver is less than for Baltimore.
E) Boş bırak

Answers

Answer:

C) Both cities have the same coefficient of variation

HELP PLZ REALLY QUICKLY PLZ IM TIMED

Answers

Answer:

a. 5 + 8x

b. 7x + 1

Step-by-step explanation:

3 + 4x + 2 + 2x + 2x

5 + 4x + 2x + 2x

5 + 8x

8x + 4 - 3 - x

7x + 4 - 3

7x + 1

Question is below ( explanation)

Answers

To find the rate, you must divide the distance traveled by the time it took.

17.5 m is the distance while time it took was 5 seconds.

So,

17.5 ÷ 5 = 3.5 m/s

The rate of the anchor is 3.5 m/s

Note: I did not ignore the negative sign in the distance but rather acknowledged it as a magnitude. This meant that the anchor was dropping down instead of going up.

simplify using distributive law ;
1.) X n ( X n Y )
2.) ( X n Y ) u ( X n Y )​

Answers

Answer:

X n Y , X n Y

Step-by-step explanation:

1) Use Associative law:

X n (X n Y) =  (X n X) n Y

Idempotent law:

= X n Y

2) it is in the 'distributed' form, thus we need to reverse the distribution,

akin to 'factorization':

(X n Y) u (X n Y) = (X n (Y u Y))

which can be further simplified using idempotent law:

= X n Y

1. The standard deviation of sample size of n = 15 is 345 and the mean is 6784. Given that the

population follows a normal distribution, construct a 90% confidence interval estimate of the

mean of the population.

Answers

Answer:

The 90% confidence interval estimate of the mean of the population is between 6627 and 6941.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 15 - 1 = 14

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 1.761

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 1.761\frac{345}{\sqrt{15}} = 157[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 6784 - 157 = 6627

The upper end of the interval is the sample mean added to M. So it is 6784 + 157 = 6941

The 90% confidence interval estimate of the mean of the population is between 6627 and 6941.

a farmer sells 7.6 kg of apples and pears at the Farmers Market. Two-fifths of this weight is Apple's, and the rest is pairs. How many kilograms of pears does she sell at the Farmers Market? ​

Answers

1/5 = 20% so... 2/5 = 40%
40% of 7.6 is 3.04
Subtract 3.04 from 7.6, you get 4.56

The farmer sells 4.56 kilograms of pears at the Farmers Market.

Factor out the GCF 4x2y + 20x3y4 - 16xy

Answers

The answer is 4x^2y(1+5xy^3)

a rectangular banner has an area of 36.75 square feet, The length of the banner is 15 feet. What is its width

Answers

Answer:

w=A

l=36.75

15=2.45ft

Step-by-step explanation: there you go :>

Answer:

2.45ft

Step-by-step explanation:

w=A

l=36.75

15=2.45ft

Quick! Need help lol

Answers

Answer:

y=10 x=4

Step-by-step explanation:

What is the nth term rule of the linear sequence below?
13, 7, 1, -5, -11,...​

Answers

Sry I don’t know try Socratic

Please help I need a quick answer

Answers

Answer:

the first one

Step-by-step explanation:

have a great day :D

Can someone help me please

Answers

The first option is the correct answer

Hey guys, please help with my last question, you will be rewarded handsomely with ten points ​

Answers

Answer:

a) 100% = 20 squares

b) 120% = 24 squares

A point on a wheel moves at 32π/9 radians per minute. How many seconds are required for the point to complete 7 revolutions?

Answers

Answer:

The number of seconds required to complete 7 revolutions is 236.28 s.

Step-by-step explanation:

Given;

speed of the point on the wheel, ω = 32π/9 rad/min

number of revolutions made by the point, θ = 7 rev

The time taken for the point to make 7 revolutions is calculated as follows;

1 rev = 2π rad

[tex]time (t) = \frac{\theta }{\omega} = \theta \ \times \frac{1}{\omega} \\\\t = (7 \ rev \ \times \frac{2 \pi \ rad}{1 \ rev} ) \ \times (\frac{1}{32 \pi/9 \ \frac{rad}{\min} } )\\\\t = (7 \times 2\pi \ \ rad) \times (\frac{9}{32 \pi }\frac{\min}{rad}) \\\\t = 14 \pi \ (rad) \ \times \ \frac{9}{32 \pi}\ (\frac{\min}{rad} )\\\\t = \frac{14 \times 9}{32} \ \min\\\\t = 3.938 \ \min\\\\t = 3.938 \ (\min) \times \frac{60 \ s}{1 \ \min} \\\\t = 236.28 \ s[/tex]

Therefor, the number of seconds required to complete 7 revolutions is 236.28 s.

If you need to round up to the nearest tenth for this question, you'd put 236.3  
:))

through: (4, 5), slope = 1

Answers

Answer:

Step-by-step explanation:

You want an equation for the line of slope 1 that passes through (4,5)?

Point-slope equation:

y-5 = 1(x-4)

in slope-intercept form:

y = x+1

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