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3 years ago

What is the difference of 15 and 23=

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

4 0

Just simply subtract 23 by 15 to get the difference of 8

Artyom0805 [142]3 years ago

4 0

23-15=8 and to make sure thats currect 15+8=23

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The penny size of a nail indicates the length of the nail. The penny size

Alecsey [184]

In this question ,it is given that

The penny size of a nail indicates the length of the nail. The penny size

d is given by the literal equation

$d=4n-2$

where n is the length (in inches) of the nail.

In the first part we have to solve for n .

And for that firt we add 2 to both sides

$d+2 =4n$

Now we divide both sides by 4, that is

$n = \frac{d+2}{4}$

Part b.

When d=3

$n= \frac{3+2}{4} = \frac{5}{4} = 1.25$

When d =6, we will get

$n=\frac{6+2}{4}=2$

When d =10, we will get

$n = \frac{10+2}{4}= 3$

6 0

3 years ago

Read 2 more answers

When an exponent of a power is an even number and the base is a negative number, the value is always:

Lorico [155]

<u>Answer:</u>

The correct answer option is A. positive.

<u>Step-by-step explanation:</u>

When an exponent or a power is an even number and the base is a negative number, the value is always positive.

Suppose we have a negative base $- 3$ and a power which is even, lets say, $6$ so what we get is a positive value.

$(-3)^6=729$

Therefore, a negative base with even power is always a positive value.

8 0

2 years ago

Read 2 more answers

I thought of a number, I added 1 3 4 to it, then I multiplied the result by 2 2 11 and I got 8. What was my number?

Valentin [98]

Given:

In a number, adding $1\dfrac{3}{4}$ , then multiplying the result by $2\dfrac{2}{11}$ we get 8.

To find:

The unknown number.

Solution:

Let the unknown number be x.

According to the question,

$(x+1\dfrac{3}{4})\times 2\dfrac{2}{11}=8$

$(x+\dfrac{1\times 4+3}{4})\times \dfrac{2\times 11+2}{11}=8$

$(x+\dfrac{4+3}{4})\times \dfrac{22+2}{11}=8$

$(x+\dfrac{7}{4})\times \dfrac{24}{11}=8$

Multiply both sides by $\dfrac{11}{24}$ .

$x+\dfrac{7}{4}=8\times \dfrac{11}{24}$

$x+\dfrac{7}{4}=\dfrac{11}{3}$

Subtract $\dfrac{7}{4}$ from both sides.

$x=\dfrac{11}{3}-\dfrac{7}{4}$

$x=\dfrac{44-21}{12}$

$x=\dfrac{23}{12}$

$x=1\dfrac{11}{12}$

Therefore, the required number is $1\dfrac{11}{12}$ .

3 0

2 years ago

Please help me by marking the correct answer to each part of number 9. I really dont get this at all, so please tell me why your

Margaret [11]

9a) False, The dimensions are 10 x 20

b) True, 10 x 20 = 200

c) 10-6=4 (right side minus left side)
26-20=6 (bottom line minus top line)

d) True, Area of a triangle = (base x height) / 2

The base is 6 and the height is 4, so 6 x 4= 24 / 2 =12

e) True, the total area is equal to the triangle area plus the rectangles area.

so, 200+12= 212

7 0

3 years ago

The ratio of ebooks to novels is 4:5. if there are 32 ebooks how many novels are there?

12345 [234]

<h3>Answer: 40 novels</h3>

================================================

Work Shown:

n = number of novels

(32 ebooks)/(n novels) = 4/5

32/n = 4/5

32*5 = n*4 ............ cross multiply

160 = 4n

4n = 160

n = 160/4 .............. dividing both sides by 4

n = 40

There are 40 novels.

4 0

3 years ago