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3 years ago

7

bobs gift shop sold a record number of cards for mother's day. one salesman sold 26 cards which was 20% of the cards sold for mo

thers day. how many cards were sold for mothers day?

1 answer:

Elan Coil [88]3 years ago

4 0

is 26 is 20% 130 is 100%

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What are units in math?

Elanso [62]

Answer: This refers to the number assigned to a unit within a building, where applicable. ... The first two digits refer to the floor level the unit is located on, while the numbers after the hyphen sign refer to the allotted number for the particular unit.

Step-by-step explanation:

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3 years ago

The graph of the equation x=y2+4is symmetric with respect to which of the following

lyudmila [28]

Answer:

The x-axis

Step-by-step explanation:

The graph of the equation x=y2+4 is symmetric with respect to the x-axis.

To test for symmetry with respect to the x-axis we substitute -y in place of y and simplify the equation. If the resulting equation is identical to original one then the function is symmetric with respect to the x-axis;

$x=y^{2} +4\\x=(-y)^{2} +4\\x=y^{2} +4$

which is identical to the original equation

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3 years ago

Read 2 more answers

Apply the properties of integer exponents to identify all of the expressions equivalent to 1/8.

Alborosie

Answer:

The answers are A , C , D

Step-by-step explanation:

Lets revise the rule of exponent

* $a^{n}*a^{m}=a^{m+n}$

* $\frac{a^{m}}{a^{n}}=a^{m-n}$

* $\frac{1}{a^{-m}}=a^{m}$

* $(\frac{a}{b})^{-m}=(\frac{b}{b})^{m}$

Now lets solve the problem

We need all the expressions equivalent to $\frac{1}{8}$

A.

∵ $2^{-3}=\frac{1}{2^{3}}$

∵ 2³ = 8

∴ $2^{-3}=\frac{1}{8}$

Answer A is equivalent to $\frac{1}{8}$

B.

∵ 2³ = 8

Answer B is not equivalent to $\frac{1}{8}$

C.

∵ 2³ = 8

∴ $\frac{1}{2^{3}}=\frac{1}{8}$

Answer C is equivalent to $\frac{1}{8}$

D.

∵ $2^{2}*2^{-5}=2^{2+-5}=2^{-3}$

∵ $2^{-3}=\frac{1}{2^{3}}=\frac{1}{8}$

Answer D is equivalent to $\frac{1}{8}$

E.

∵ $2^{-2}*2^{5}=2^{-2+5}=2^{3}$

∵ 2³ = 8

Answer E is not equivalent to $\frac{1}{8}$

<em>The answers are A , C , D</em>

4 0

4 years ago

it takes mike to read 10 min to finish reading 4 pages of a book how long does it take for him to finish reading 30 pages

Bumek [7]

Answer:

1 hr 15 min

Step-by-step explanation:

4 | 1 | 30

10 | 2.5 | 75

75-60=15

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3 years ago

Read 2 more answers

A stereo manufacturer makes three types of stereo systems, I, II, and III, with profits of $20, $30, and $40, respectively. No m

romanna [79]

So,

1. Type I profits $20
2. Type II profits $30
3. Type III profits $40
4. I/day < 100
5. Type I needs 5 hrs.
6. Type II needs 10 hrs.
7. Type III needs 15 hrs.
8. Total hrs. available: 2000 hrs.

Every +5 hrs. spent yields an extra $10.
If we use 500 hrs. to make 100 Type I stereos, we will profit $2000.
If we use 500 hrs. to make 50 Type II stereos, we will profit $1500.
If we use 495 hrs. to make 33 Type III stereos, we will profit $1320.

We should use the first 500 hrs. to make Type I stereos.
We should use the last 1500 hrs. to make Type II stereos.

$2000 + $4500 = x
$6500 = x

There must be 100 Type I stereos made along with 150 Type II stereos made.

4 0

4 years ago